Merge remote-tracking branch 'origin/stable' into v2

Simplify network implementation

.github/workflows/ci.yaml

@@ -39,35 +39,22 @@ jobs:
     name: Test
     runs-on: ubuntu-latest
     timeout-minutes: 10
-    strategy:
-      matrix:
-        go_version:
-          - ^1.18
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v6
         with:
           submodules: recursive
 
-      - name: Setup Go
+      - uses: jdx/mise-action@v3
-        uses: actions/setup-go@v2
+        name: Install mise
-        with:
-          go-version: ${{ matrix.go_version }}
-
-      - name: Cache dependencies
-        uses: actions/cache@v2
-        with:
-          path: ~/go/pkg/mod
-          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
-          restore-keys: ${{ runner.os }}-go-
 
       - name: Run tests
-        run: go test -coverprofile=./coverage.txt -covermode=atomic -v ./...
+        run: mise tasks run covtest
 
       - name: Collect coverage
-        uses: codecov/codecov-action@v1
+        uses: codecov/codecov-action@v5
         with:
-          file: ./coverage.txt
+          files: ./coverage.txt
 
   fuzz:
     name: Fuzzing
@@ -75,31 +62,16 @@ jobs:
     timeout-minutes: 20
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v6
         with:
           submodules: recursive
 
-      - name: Setup Go
+      - uses: jdx/mise-action@v3
-        uses: actions/setup-go@v2
+        name: Install mise
-        with:
-          go-version: ^1.18
-
-      - name: Cache fuzz results
-        uses: actions/cache@v2
-        with:
-          path: ~/.cache/go-build/fuzz
-          key: ${{ runner.os }}-go-${{ hashFiles('**/*_fuzz_test.go', '**/*_fuzz_internal_test.go') }}
-          restore-keys: ${{ runner.os }}-go-
-
-      - name: Cache dependencies
-        uses: actions/cache@v2
-        with:
-          path: ~/go/pkg/mod
-          key: ${{ runner.os }}-go-${{ hashFiles('**/go.sum') }}
-          restore-keys: ${{ runner.os }}-go-
 
       - name: Run fuzzing
-        run: make -j4 fuzz
+        run: mise tasks run 'test:fuzz:*'
+
 
   lint:
     name: Lint
@@ -107,45 +79,52 @@ jobs:
     timeout-minutes: 5
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v6
         with:
           submodules: recursive
 
-      - name: Setup Go
+      - uses: jdx/mise-action@v3
-        uses: actions/setup-go@v2
+        name: Install mise
-        with:
-          go-version: ^1.18
 
       - name: Run linter
-        uses: golangci/golangci-lint-action@v3
+        run: mise tasks run lint
-        with:
-          version: v1.45.0
 
   docker:
     name: Docker
     runs-on: ubuntu-latest
     timeout-minutes: 20
+    permissions:
+      contents: read
+      packages: write
     steps:
       - name: Checkout
-        uses: actions/checkout@v2
+        uses: actions/checkout@v6
         with:
           submodules: recursive
 
       - name: Get Docker meta
-        id: docker_meta
+        id: meta
-        uses: crazy-max/ghaction-docker-meta@v1
+        uses: docker/metadata-action@v5
         with:
-          images: nineseconds/mtg,ghcr.io/9seconds/mtg
+          images: |
-          tag-semver: "{{version}},{{major}},{{major}}.{{minor}}"
+            nineseconds/mtg
+            ghcr.io/${{ github.repository }}
+          tags: |
+            type=semver,pattern={{version}}
+            type=semver,pattern={{major}}.{{minor}}
+            type=semver,pattern={{major}}
+            type=raw,value=latest,enable={{is_default_branch}}
+            type=raw,value=master,enable=${{ github.ref == 'refs/heads/master' }}
+            type=raw,value=stable,enable=${{ github.ref == 'refs/heads/stable' }}
 
       - name: Setup QEMU
-        uses: docker/setup-qemu-action@v1
+        uses: docker/setup-qemu-action@v3
 
       - name: Setup BuildX
-        uses: docker/setup-buildx-action@v1
+        uses: docker/setup-buildx-action@v3
 
       - name: Setup cache
-        uses: actions/cache@v2
+        uses: actions/cache@v5
         with:
           path: /tmp/buildx-cache
           key: ${{ runner.os }}-buildx-${{ github.sha }}
@@ -154,18 +133,18 @@ jobs:
 
       - name: Login to DockerHub
         if: github.event_name != 'pull_request'
-        uses: docker/login-action@v1
+        uses: docker/login-action@v3
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_PASSWORD }}
 
-      - name: Login to GHCR.io
+      - name: Login to GitHub Container Registry
         if: github.event_name != 'pull_request'
-        uses: docker/login-action@v1
+        uses: docker/login-action@v3
         with:
           registry: ghcr.io
-          username: ${{ github.repository_owner }}
+          username: ${{ github.actor }}
-          password: ${{ secrets.GH_PAT }}
+          password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Build and push
         uses: docker/build-push-action@v2
@@ -174,7 +153,7 @@ jobs:
           context: .
           platforms: linux/amd64,linux/arm64,linux/386,linux/arm/v7,linux/arm/v6
           push: ${{ github.event_name != 'pull_request' }}
-          tags: ${{ steps.docker_meta.outputs.tags }}
+          tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.docker_meta.outputs.labels }}
+          labels: ${{ steps.meta.outputs.labels }}
           cache-from: type=local,src=/tmp/buildx-cache
           cache-to: type=local,dest=/tmp/buildx-cache

.github/workflows/govulncheck.yml

@@ -0,0 +1,41 @@
+---
+
+name: Vulnerability checks
+
+permissions:
+  actions: read
+  checks: read
+  contents: read
+  deployments: read
+  issues: read
+  discussions: read
+  pull-requests: read
+  repository-projects: read
+  security-events: read
+  statuses: read
+
+on:
+  push:
+  pull_request:
+  schedule: # daily at 10:22 UTC
+    - cron: '22 10 * * *'
+  workflow_dispatch:
+
+jobs:
+  vuln:
+    name: Test vulnerabilities
+    runs-on: ubuntu-latest
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v6
+      with:
+        submodules: recursive
+
+    - name: Setup Go
+      uses: actions/setup-go@v6
+      with:
+        go-version-file: go.mod
+
+    - name: Check for vulnerabilities
+      run: |
+        go run golang.org/x/vuln/cmd/govulncheck@latest ./...

.gitignore

@@ -6,8 +6,5 @@
 *.test
 *.out
 mtg
-vendor/
-ccbuilds/
-.bin/
 coverage.txt
 dist/

.golangci.toml

@@ -1,12 +1,21 @@
+# https://golangci-lint.run/docs/configuration/file/
+
+version = '2'
+
 [run]
 concurrency = 4
-deadline = "2m"
 tests = true
-skip-dirs = ["vendor"]
 
-[output]
+# [linters]
-format = "colored-line-number"
+# enable-all = true
-
+# disable = [
-[linters]
+#     "containedctx",
-enable-all = true
+#     "exhaustivestruct",
-disable = ["thelper", "ireturn", "varnamelen", "gochecknoglobals", "gas", "goerr113", "exhaustivestruct", "containedctx"]
+#     "exhaustruct",
+#     "gas",
+#     "gochecknoglobals",
+#     "goerr113",
+#     "ireturn",
+#     "thelper",
+#     "varnamelen",
+# ]

.goreleaser.yml

@@ -1,5 +1,7 @@
 ---
 
+version: 2
+
 project_name: mtg
 
 before:
@@ -41,11 +43,13 @@ builds:
 
 archives:
   - name_template: '{{ .ProjectName }}-{{ .Version }}-{{ .Os }}-{{ .Arch }}{{ if .Arm }}v{{ .Arm }}{{ end }}'
-    format: tar.gz
+    formats:
+      - tar.gz
     wrap_in_directory: true
     format_overrides:
       - goos: windows
-        format: zip
+        formats:
+          - zip
     files:
       - LICENSE
       - README.md
@@ -55,7 +59,7 @@ gomod:
   proxy: true
 
 snapshot:
-  name_template: '{{ .Version }}'
+  version_template: '{{ .Version }}'
 
 checksum:
   name_template: '{{ .ProjectName }}-{{ .Version }}-checksums.txt'

.mise.toml

@@ -0,0 +1,98 @@
+[tools]
+"go:golang.org/x/pkgsite/cmd/pkgsite" = "latest"
+"go:golang.org/x/tools/gopls" = "latest"
+"go:golang.org/x/vuln/cmd/govulncheck" = "latest"
+"go:mvdan.cc/gofumpt" = "latest"
+go = "latest"
+golangci-lint = "latest"
+goreleaser = "latest"
+
+[vars]
+fuzzflags = "-fuzztime=120s"
+
+[tasks.build]
+description = "Build binary"
+sources = ["**/*.go", "go.mod", "go.sum"]
+outputs = ["mtg"]
+run = "go build"
+
+[tasks.update]
+description = "Update dependencies"
+run = [
+    "go get -u",
+    "go mod tidy -go=1.26"
+]
+
+[tasks.lint]
+description = "Run linter"
+run = "golangci-lint run"
+
+[tasks.vuln]
+description = "Test for vulnerabilities"
+run = "govulncheck ./..."
+
+[tasks.test]
+description = "Run tests"
+run = "go test -v ./..."
+
+[tasks.covtest]
+description = "Run tests with code coverage"
+run = "go test -coverprofile=coverage.txt -covermode=atomic -parallel 2 -race -v ./..."
+
+[tasks.test-all]
+description = "Run all tests"
+depends = [
+    "test",
+    "test:fuzz:*"
+]
+
+[tasks."test:fuzz:client-hello"]
+description = "Run fuzzy test for ClientHello"
+run = "go test -v {{ vars.fuzzflags }} -fuzz=FuzzClientHello ./mtglib/internal/faketls"
+
+[tasks."test:fuzz:client-handshake"]
+description = "Run fuzzy test for ClientHandshake"
+run = "go test -v {{ vars.fuzzflags }} -fuzz=FuzzClientServerHandshake ./mtglib/internal/obfuscation"
+
+[tasks."test:fuzz:server-handshake-frame"]
+description = "Run fuzzy test for GenerateHandshakeFrame"
+run = "go test -v {{ vars.fuzzflags }} -fuzz=FuzzGenerateHandshakeFrame ./mtglib/internal/obfuscation"
+
+[tasks.static]
+description = "Build static binary"
+sources = ["**/*.go", "go.mod", "go.sum"]
+outputs = ["mtg"]
+run = """
+#!/bin/bash
+
+version="$(git describe --exact-match HEAD 2>/dev/null || git describe --tags --always)"
+go build \
+    -trimpath \
+    -mod=readonly \
+    -ldflags="-extldflags '-static' -s -w -X 'main.version=$version'" \
+    -a \
+    -tags netgo
+"""
+
+[tasks.release]
+description = "Create release tarballs"
+sources = ["**/*.go", "go.mod", "go.sum", ".goreleaser.yml"]
+run = [
+    "goreleaser --snapshot --clean",
+    "find dist -depth 1 -type d | xargs -r rm -r",
+    "rm ./dist/config.yaml"
+]
+
+[tasks.image]
+description = "Build docker image"
+sources = ["**/*.go", "go.mod", "go.sum", "Dockerfile"]
+run = "docker buildx build --pull -t mtg ."
+
+[tasks.docs]
+description = "Run doc server"
+run = "pkgsite -http 0.0.0.0:10000"
+
+[tasks.fmt]
+description = "Reformat source code"
+sources = ["**/*.go"]
+run = "gofumpt -w --extra ."

Dockerfile

@@ -1,21 +1,27 @@
 ###############################################################################
 # BUILD STAGE
 
-FROM golang:1.18-alpine AS build
+FROM golang:1.26-alpine AS build
+
+ENV CGO_ENABLED=0
 
 RUN set -x \
   && apk --no-cache --update add \
     bash \
     ca-certificates \
-    curl \
+    git
-    git \
-    make
 
 COPY . /app
 WORKDIR /app
 
 RUN set -x \
-  && make -j 4 static
+  && version="$(git describe --exact-match HEAD 2>/dev/null || git describe --tags --always)" \
+  && go build \
+      -trimpath \
+      -mod=readonly \
+      -ldflags="-extldflags '-static' -s -w -X 'main.version=$version'" \
+      -a \
+      -tags netgo
 
 
 ###############################################################################

Makefile

@@ -1,121 +0,0 @@
-ROOT_DIR     := $(shell dirname $(realpath $(lastword $(MAKEFILE_LIST))))
-IMAGE_NAME   := mtg
-APP_NAME     := $(IMAGE_NAME)
-
-GOLANGCI_LINT_VERSION := v1.45.0
-
-VERSION            := $(shell git describe --exact-match HEAD 2>/dev/null || git describe --tags --always)
-COMMON_BUILD_FLAGS := -trimpath -mod=readonly -ldflags="-extldflags '-static' -s -w -X 'main.version=$(VERSION)'"
-
-FUZZ_FLAGS := -fuzztime=120s
-
-GOBIN  := $(ROOT_DIR)/.bin
-GOTOOL := env "GOBIN=$(GOBIN)" "PATH=$(ROOT_DIR)/.bin:$(PATH)"
-
-# -----------------------------------------------------------------------------
-
-.PHONY: all
-all: build
-
-.PHONY: build
-build:
-	@go build $(COMMON_BUILD_FLAGS) -o "$(APP_NAME)"
-
-$(APP_NAME): build
-
-.PHONY: static
-static:
-	@env CGO_ENABLED=0 GOOS=linux go build \
-		$(COMMON_BUILD_FLAGS) \
-		-tags netgo \
-		-a \
-		-o "$(APP_NAME)"
-
-vendor: go.mod go.sum
-	@$(MOD_ON) go mod vendor
-
-.bin:
-	@mkdir -p "$(GOBIN)" || true
-
-.PHONY: fmt
-fmt:
-	@$(GOTOOL) gofumpt -w -extra "$(ROOT_DIR)"
-
-.PHONY: test
-test:
-	@go test -v ./...
-
-.PHONY: citest
-citest:
-	@go test -coverprofile=coverage.txt -covermode=atomic -parallel 2 -race -v ./...
-
-.PHONY: clean
-clean:
-	@git clean -xfd && \
-		git reset --hard >/dev/null && \
-		git submodule foreach --recursive sh -c 'git clean -xfd && git reset --hard' >/dev/null
-
-.PHONY: lint
-lint:
-	@$(GOTOOL) golangci-lint run
-
-.PHONY: release
-release:
-	@$(GOTOOL) goreleaser release --snapshot --rm-dist && \
-		find "$(ROOT_DIR)/dist" -type d | grep -vP "dist$$" | xargs -r rm -rf && \
-		rm -f "$(ROOT_DIR)/dist/config.yaml"
-
-.PHONY: docker
-docker:
-	@docker build --pull -t "$(IMAGE_NAME)" "$(ROOT_DIR)"
-
-.PHONY: doc
-doc:
-	@$(GOTOOL) godoc -http 0.0.0.0:10000
-
-.PHONY: install-tools
-install-tools: install-tools-lint install-tools-godoc install-tools-gofumpt install-tools-goreleaser
-
-.PHONY: install-tools-lint
-install-tools-lint: .bin
-	@curl -sfL https://raw.githubusercontent.com/golangci/golangci-lint/master/install.sh \
-		| bash -s -- -b "$(GOBIN)" "$(GOLANGCI_LINT_VERSION)"
-
-.PHONY: install-tools-godoc
-install-tools-godoc: .bin
-	@$(GOTOOL) go install golang.org/x/tools/cmd/godoc@latest
-
-.PHONY: install-tools-gofumpt
-install-tools-gofumpt: .bin
-	@$(GOTOOL) go install mvdan.cc/gofumpt@latest
-
-.PHONY: goreleaser
-install-tools-goreleaser: .bin
-	@$(GOTOOL) go install github.com/goreleaser/goreleaser@latest
-
-.PHONY: update-deps
-update-deps:
-	@go get -u && go mod tidy -go=1.18
-
-.PHONY: fuzz
-fuzz: fuzz-ClientHello fuzz-ServerGenerateHandshakeFrame fuzz-ClientHandshake fuzz-ServerReceive fuzz-ServerSend
-
-.PHONY: fuzz-ClientHello
-fuzz-ClientHello:
-	@go test -fuzz=FuzzClientHello $(FUZZ_FLAGS) "$(ROOT_DIR)/mtglib/internal/faketls"
-
-.PHONY: fuzz-ServerGenerateHandshakeFrame
-fuzz-ServerGenerateHandshakeFrame:
-	@go test -fuzz=FuzzServerGenerateHandshakeFrame $(FUZZ_FLAGS) "$(ROOT_DIR)/mtglib/internal/obfuscated2"
-
-.PHONY: fuzz-ClientHandshake
-fuzz-ClientHandshake:
-	@go test -fuzz=FuzzClientHandshake $(FUZZ_FLAGS) "$(ROOT_DIR)/mtglib/internal/obfuscated2"
-
-.PHONY: fuzz-ServerReceive
-fuzz-ServerReceive:
-	@go test -fuzz=FuzzServerReceive $(FUZZ_FLAGS) "$(ROOT_DIR)/mtglib/internal/obfuscated2"
-
-.PHONY: fuzz-ServerSend
-fuzz-ServerSend:
-	@go test -fuzz=FuzzServerSend $(FUZZ_FLAGS) "$(ROOT_DIR)/mtglib/internal/obfuscated2"

README.md

@@ -10,6 +10,17 @@ Highly-opinionated (ex-bullshit-free) MTPROTO proxy for
 **If you use v1.0 or upgrade broke you proxy, please read the chapter
 [Version 2](#version-2)**
 
+If you want to have a proxy that _supports adtag_ (possibility to promote a
+channel with a special Telegram bot), I recommend to use
+[telemt](https://github.com/telemt/telemt) project. v1 of mtg supports it
+but I do not see any reasonable point of using it: adtag requires communication
+via a fragile set of middle proxies, requires complex setup that must expose
+a public IPs, has lower bandwidth and latency.
+
+mtg idea is simple: minimal unbloated proxy that can handle a reasonable scale
+~10-20k simultaneous connections, has no user management, but ticks all
+checkboxes related to its main intent: provide a way to use Telegram.
+
 ## Rationale
 
 There are several available proxies for Telegram MTPROTO available. Here
@@ -18,6 +29,7 @@ are the most notable:
 * [Official](https://github.com/TelegramMessenger/MTProxy)
 * [Python](https://github.com/alexbers/mtprotoproxy)
 * [Erlang](https://github.com/seriyps/mtproto_proxy)
+* [Telemt (Rust)](https://github.com/telemt/telemt)
 
 You can use any of these. They work great and all implementations have
 feature parity now. This includes support of adtag, replay attack
@@ -40,6 +52,12 @@ that probably matter.
   way of doing business I suppose. I think the only viable way is to
   have a proxy that can be restored anywhere easily.
 
+* **Supports proxy protocol v1/v2**
+
+  This makes integration with loadbalancers like HAProxy and ELB a first class
+  citizen by supporting their
+  [commuication protocols](https://www.haproxy.org/download/2.3/doc/proxy-protocol.txt).
+
 * **A single secret**
 
   I think that multiple secrets solve no problems and just complex
@@ -162,6 +180,12 @@ This project has several main branches
 
 ## Getting started
 
+### Download mise
+
+mtg uses [mise](https://mise.jdx.dev/) to maintain its development
+dependencies + replaces a make for building things. Please
+[install](https://mise.jdx.dev/getting-started.html) it first.
+
 ### Download a tool
 
 #### Download binaries
@@ -190,7 +214,7 @@ surprises. Always choose some version tag.
 Also, if you have `go` installed, you can always download this tool with `go get`:
 
 ```console
-go get github.com/9seconds/mtg/v2
+go install github.com/9seconds/mtg/v2@latest
 ```
 
 #### Build from sources
@@ -198,13 +222,14 @@ go get github.com/9seconds/mtg/v2
 ```console
 git clone https://github.com/9seconds/mtg.git
 cd mtg
-make static
+mise install
+mise tasks run build
 ```
 
 or for the docker image:
 
 ```console
-make docker
+mise tasks run image
 ```
 
 ### Generate secret
@@ -275,7 +300,7 @@ Flags:
   -b, --tcp-buffer="4KB"               Size of TCP buffer to use.
   -i, --prefer-ip="prefer-ipv6"        IP preference. By default we prefer IPv6 with fallback to IPv4.
   -p, --domain-fronting-port=443       A port to access for domain fronting.
-  -n, --doh-ip=9.9.9.9                 IP address of DNS-over-HTTP to use.
+  -n, --doh-ip=1.1.1.1                 IP address of DNS-over-HTTP to use.
   -t, --timeout=10s                    Network timeout to use
   -a, --antireplay-cache-size="1MB"    A size of anti-replay cache to use.
 ```
@@ -338,7 +363,7 @@ $ sudo systemctl start mtg
 or you can run a docker image
 
 ```console
-docker run -d -v /etc/mtg.toml:/config.toml -p 443:3128 --name mtg-proxy --restart=unless-stopped nineseconds/mtg:2
+docker run -d -v $PWD/config.toml:/config.toml -p 443:3128 --name mtg-proxy --restart=unless-stopped nineseconds/mtg:2
 ```
 
 where _443_ is a host port (a port you want to connect to from a

antireplay/init.go

@@ -1,17 +1,17 @@
-// Antireplay package has cache implementations that are effective
+// Antireplay package has cache implementations that are effective against
-// against replay attacks.
+// replay attacks.
 //
-// To understand more about replay attacks, please read documentation
+// To understand more about replay attacks, please read documentation for
-// for mtglib.AntiReplayCache interface. This package has a list of some
+// [mtglib.AntiReplayCache] interface. This package has a list of some
 // implementations of this interface.
 package antireplay
 
 const (
-	// DefaultStableBloomFilterMaxSize is a recommended byte size for a
+	// DefaultStableBloomFilterMaxSize is a recommended byte size for a stable
-	// stable bloom filter.
+	// bloom filter.
 	DefaultStableBloomFilterMaxSize = 1024 * 1024 // 1MiB
 
-	// DefaultStableBloomFilterErrorRate is a recommended default error
+	// DefaultStableBloomFilterErrorRate is a recommended default error rate for a
-	// rate for a stable bloom filter.
+	// stable bloom filter.
 	DefaultStableBloomFilterErrorRate = 0.001
 )

antireplay/noop.go

@@ -6,9 +6,8 @@ type noop struct{}
 
 func (n noop) SeenBefore(_ []byte) bool { return false }
 
-// NewNoop returns an implementation that does nothing. A corresponding
+// NewNoop returns an implementation that does nothing. A corresponding method
-// method always returns false, so this cache accepts everything you
+// always returns false, so this cache accepts everything you pass to it.
-// pass to it.
 func NewNoop() mtglib.AntiReplayCache {
 	return noop{}
 }

antireplay/stable_bloom_filter.go

@@ -20,19 +20,19 @@ func (s *stableBloomFilter) SeenBefore(digest []byte) bool {
 	return s.filter.TestAndAdd(digest)
 }
 
-// NewStableBloomFilter returns an implementation of AntiReplayCache
+// NewStableBloomFilter returns an implementation of AntiReplayCache based on
-// based on stable bloom filter.
+// stable bloom filter.
 //
 // http://webdocs.cs.ualberta.ca/~drafiei/papers/DupDet06Sigmod.pdf
 //
-// The basic idea of a stable bloom filter is quite simple: each time
+// The basic idea of a stable bloom filter is quite simple: each time when you
-// when you set a new element, you randomly reset P elements. There is a
+// set a new element, you randomly reset P elements. There is a hardcore math
-// hardcore math which proves that if you choose this P correctly, you
+// which proves that if you choose this P correctly, you can maintain the same
-// can maintain the same error rate for a stream of elements.
+// error rate for a stream of elements.
 //
 // byteSize is the number of bytes you want to give to a bloom filter.
-// errorRate is desired false-positive error rate. If you want to use
+// errorRate is desired false-positive error rate. If you want to use default
-// default values, please pass 0 for byteSize and <0 for errorRate.
+// values, please pass 0 for byteSize and <0 for errorRate.
 func NewStableBloomFilter(byteSize uint, errorRate float64) mtglib.AntiReplayCache {
 	if byteSize == 0 {
 		byteSize = DefaultStableBloomFilterMaxSize
@@ -42,7 +42,7 @@ func NewStableBloomFilter(byteSize uint, errorRate float64) mtglib.AntiReplayCac
 		errorRate = DefaultStableBloomFilterErrorRate
 	}
 
-	sf := boom.NewDefaultStableBloomFilter(byteSize*8, errorRate) // nolint: gomnd
+	sf := boom.NewDefaultStableBloomFilter(byteSize*8, errorRate)
 	sf.SetHash(xxhash.New64())
 
 	return &stableBloomFilter{

buildinfo.go

@@ -0,0 +1,84 @@
+package main
+
+import (
+	"crypto/sha256"
+	"encoding/base64"
+	"encoding/binary"
+	"fmt"
+	"io"
+	"runtime/debug"
+	"sort"
+	"strconv"
+	"time"
+)
+
+var version = "dev" // has to be set by ldflags
+
+const (
+	buildInfoModuleStart byte = iota
+	buildInfoModuleFinish
+	buildInfoModuleDelimeter
+)
+
+func getVersion() string {
+	buildInfo, ok := debug.ReadBuildInfo()
+	if !ok {
+		return version
+	}
+
+	date := time.Now()
+	commit := ""
+	goVersion := buildInfo.GoVersion
+	dirtySuffix := ""
+
+	for _, setting := range buildInfo.Settings {
+		switch setting.Key {
+		case "vcs.time":
+			date, _ = time.Parse(time.RFC3339, setting.Value)
+		case "vcs.revision":
+			commit = setting.Value
+		case "vcs.modified":
+			if dirty, _ := strconv.ParseBool(setting.Value); dirty {
+				dirtySuffix = " [dirty]"
+			}
+		}
+	}
+
+	hasher := sha256.New()
+
+	checksumModule := func(mod *debug.Module) {
+		hasher.Write([]byte{buildInfoModuleStart})
+
+		io.WriteString(hasher, mod.Path) //nolint: errcheck
+		hasher.Write([]byte{buildInfoModuleDelimeter})
+
+		io.WriteString(hasher, mod.Version) //nolint: errcheck
+		hasher.Write([]byte{buildInfoModuleDelimeter})
+
+		io.WriteString(hasher, mod.Sum) //nolint: errcheck
+
+		hasher.Write([]byte{buildInfoModuleFinish})
+	}
+
+	io.WriteString(hasher, buildInfo.Path) //nolint: errcheck
+
+	binary.Write(hasher, binary.LittleEndian, uint64(1+len(buildInfo.Deps))) //nolint: errcheck
+
+	sort.Slice(buildInfo.Deps, func(i, j int) bool {
+		return buildInfo.Deps[i].Path > buildInfo.Deps[j].Path
+	})
+
+	checksumModule(&buildInfo.Main)
+
+	for _, module := range buildInfo.Deps {
+		checksumModule(module)
+	}
+
+	return fmt.Sprintf("%s (%s: %s on %s%s, modules checksum %s)",
+		version,
+		goVersion,
+		date.Format(time.RFC3339),
+		commit,
+		dirtySuffix,
+		base64.StdEncoding.EncodeToString(hasher.Sum(nil)))
+}

essentials/conns.go

@@ -5,22 +5,47 @@ import (
 	"net"
 )
 
-// CloseableReader is a reader interface that can close its reading end.
+// CloseableReader is an [io.Reader] interface that can close its reading end.
 type CloseableReader interface {
 	io.Reader
 	CloseRead() error
 }
 
-// CloseableWriter is a writer that can close its writing end.
+// CloseableWriter is an [io.Writer] that can close its writing end.
 type CloseableWriter interface {
 	io.Writer
 	CloseWrite() error
 }
 
-// Conn is an extension of net.Conn that can close its ends. This mostly
+// Conn is an extension of [net.Conn] that can close its ends. This mostly
 // implies TCP connections.
 type Conn interface {
 	net.Conn
 	CloseableReader
 	CloseableWriter
 }
+
+type netConnWrapper struct {
+	net.Conn
+}
+
+func (n netConnWrapper) CloseRead() error {
+	if conn, ok := n.Conn.(CloseableReader); ok {
+		return conn.CloseRead()
+	}
+
+	return n.Close()
+}
+
+func (n netConnWrapper) CloseWrite() error {
+	if conn, ok := n.Conn.(CloseableWriter); ok {
+		return conn.CloseWrite()
+	}
+
+	return n.Close()
+}
+
+// WrapConn wraps a generic [net.Conn] into Conn.
+func WrapNetConn(conn net.Conn) Conn {
+	return netConnWrapper{conn}
+}

events/event_stream.go

@@ -2,14 +2,14 @@ package events
 
 import (
 	"context"
-	"math/rand"
+	"math/rand/v2"
 	"runtime"
 
 	"github.com/9seconds/mtg/v2/mtglib"
 	"github.com/OneOfOne/xxhash"
 )
 
-// EventStream is a default implementation of the mtglib.EventStream
+// EventStream is a default implementation of the [mtglib.EventStream]
 // interface.
 //
 // EventStream manages a set of goroutines, observers. Main
@@ -64,7 +64,7 @@ func NewEventStream(observerFactories []ObserverFactory) EventStream {
 		chans:     make([]chan mtglib.Event, runtime.NumCPU()),
 	}
 
-	for i := 0; i < runtime.NumCPU(); i++ {
+	for i := range runtime.NumCPU() {
 		rv.chans[i] = make(chan mtglib.Event, 1)
 
 		if len(observerFactories) == 1 {
@@ -77,7 +77,7 @@ func NewEventStream(observerFactories []ObserverFactory) EventStream {
 	return rv
 }
 
-func eventStreamProcessor(ctx context.Context, eventChan <-chan mtglib.Event, observer Observer) { // nolint: cyclop
+func eventStreamProcessor(ctx context.Context, eventChan <-chan mtglib.Event, observer Observer) { //nolint: cyclop
 	defer observer.Shutdown()
 
 	for {

events/init.go

@@ -1,19 +1,19 @@
 // Events has a default implementations of EventStream for mtglib.
 //
-// Please see documentation for mtglib.EventStream interface to get an
+// Please see documentation for [mtglib.EventStream] interface to get an idea
-// idea of such an abstraction. This package has implementations for the
+// of such an abstraction. This package has implementations for the default
-// default event stream.
+// event stream.
 //
-// Default event stream has a list of its own concepts. First, all it
+// Default event stream has a list of its own concepts. First, all it does is a
-// does is a routing of messages to known observers. It takes an event,
+// routing of messages to known observers. It takes an event, defines its type
-// defines its type and pass this message to a method of the observer.
+// and pass this message to a method of the observer.
 //
-// There might be many observers, but default event stream has a
+// There might be many observers, but default event stream has a guarantee
-// guarantee though. It uses StreamID as a sharding key and guarantees
+// though. It uses StreamID as a sharding key and guarantees that a message
-// that a message with the same StreamID will be devlivered to the same
+// with the same StreamID will be devlivered to the same observer instance. So,
-// observer instance. So, each producer is guarateed to get all relevant
+// each producer is guarateed to get all relevant messages related to the same
-// messages related to the same session. It is not possible that it will
+// session. It is not possible that it will get EventFinish if it has not seen
-// get EventFinish if it has not seen EventStart for that session yet.
+// EventStart for that session yet.
 package events
 
 import "github.com/9seconds/mtg/v2/mtglib"
@@ -21,10 +21,10 @@ import "github.com/9seconds/mtg/v2/mtglib"
 // Observer is an instance that listens for the incoming events.
 //
 // As it is said in the package description, the default event stream
-// guarantees that all events with the same StreamID are going to be
+// guarantees that all events with the same StreamID are going to be routed to
-// routed to the same instance of the observer. So, there is no need
+// the same instance of the observer. So, there is no need to synchronize
-// to synchronize information about streams between many observers
+// information about streams between many observers instances, they can have
-// instances, they can have their local storage.
+// their local storage.
 type Observer interface {
 	// EventStart reacts on incoming mtglib.EventStart event.
 	EventStart(mtglib.EventStart)
@@ -65,8 +65,8 @@ type Observer interface {
 
 // ObserverFactory creates a new instance of the observer.
 //
-// Default event stream creates a small set of goroutines to manage
+// Default event stream creates a small set of goroutines to manage incoming
-// incoming messages. Each message is routed to an appropriate observer
+// messages. Each message is routed to an appropriate observer based on a
-// based on a sharding key, stream id. So, it is possible that an
+// sharding key, stream id. So, it is possible that an instance of mtg will
-// instance of mtg will have many observer instances, not a single one.
+// have many observer instances, not a single one.
 type ObserverFactory func() Observer

events/multi_observer.go

@@ -12,14 +12,11 @@ type multiObserver struct {
 
 func (m multiObserver) EventStart(evt mtglib.EventStart) {
 	wg := &sync.WaitGroup{}
-	wg.Add(len(m.observers))
 
 	for _, v := range m.observers {
-		go func(obs Observer) {
+		wg.Go(func() {
-			defer wg.Done()
+			v.EventStart(evt)
-
+		})
-			obs.EventStart(evt)
-		}(v)
 	}
 
 	wg.Wait()
@@ -27,14 +24,11 @@ func (m multiObserver) EventStart(evt mtglib.EventStart) {
 
 func (m multiObserver) EventConnectedToDC(evt mtglib.EventConnectedToDC) {
 	wg := &sync.WaitGroup{}
-	wg.Add(len(m.observers))
 
 	for _, v := range m.observers {
-		go func(obs Observer) {
+		wg.Go(func() {
-			defer wg.Done()
+			v.EventConnectedToDC(evt)
-
+		})
-			obs.EventConnectedToDC(evt)
-		}(v)
 	}
 
 	wg.Wait()
@@ -42,14 +36,11 @@ func (m multiObserver) EventConnectedToDC(evt mtglib.EventConnectedToDC) {
 
 func (m multiObserver) EventDomainFronting(evt mtglib.EventDomainFronting) {
 	wg := &sync.WaitGroup{}
-	wg.Add(len(m.observers))
 
 	for _, v := range m.observers {
-		go func(obs Observer) {
+		wg.Go(func() {
-			defer wg.Done()
+			v.EventDomainFronting(evt)
-
+		})
-			obs.EventDomainFronting(evt)
-		}(v)
 	}
 
 	wg.Wait()
@@ -57,14 +48,11 @@ func (m multiObserver) EventDomainFronting(evt mtglib.EventDomainFronting) {
 
 func (m multiObserver) EventTraffic(evt mtglib.EventTraffic) {
 	wg := &sync.WaitGroup{}
-	wg.Add(len(m.observers))
 
 	for _, v := range m.observers {
-		go func(obs Observer) {
+		wg.Go(func() {
-			defer wg.Done()
+			v.EventTraffic(evt)
-
+		})
-			obs.EventTraffic(evt)
-		}(v)
 	}
 
 	wg.Wait()
@@ -72,14 +60,11 @@ func (m multiObserver) EventTraffic(evt mtglib.EventTraffic) {
 
 func (m multiObserver) EventFinish(evt mtglib.EventFinish) {
 	wg := &sync.WaitGroup{}
-	wg.Add(len(m.observers))
 
 	for _, v := range m.observers {
-		go func(obs Observer) {
+		wg.Go(func() {
-			defer wg.Done()
+			v.EventFinish(evt)
-
+		})
-			obs.EventFinish(evt)
-		}(v)
 	}
 
 	wg.Wait()
@@ -87,14 +72,11 @@ func (m multiObserver) EventFinish(evt mtglib.EventFinish) {
 
 func (m multiObserver) EventConcurrencyLimited(evt mtglib.EventConcurrencyLimited) {
 	wg := &sync.WaitGroup{}
-	wg.Add(len(m.observers))
 
 	for _, v := range m.observers {
-		go func(obs Observer) {
+		wg.Go(func() {
-			defer wg.Done()
+			v.EventConcurrencyLimited(evt)
-
+		})
-			obs.EventConcurrencyLimited(evt)
-		}(v)
 	}
 
 	wg.Wait()
@@ -102,14 +84,11 @@ func (m multiObserver) EventConcurrencyLimited(evt mtglib.EventConcurrencyLimite
 
 func (m multiObserver) EventIPBlocklisted(evt mtglib.EventIPBlocklisted) {
 	wg := &sync.WaitGroup{}
-	wg.Add(len(m.observers))
 
 	for _, v := range m.observers {
-		go func(obs Observer) {
+		wg.Go(func() {
-			defer wg.Done()
+			v.EventIPBlocklisted(evt)
-
+		})
-			obs.EventIPBlocklisted(evt)
-		}(v)
 	}
 
 	wg.Wait()
@@ -117,14 +96,11 @@ func (m multiObserver) EventIPBlocklisted(evt mtglib.EventIPBlocklisted) {
 
 func (m multiObserver) EventReplayAttack(evt mtglib.EventReplayAttack) {
 	wg := &sync.WaitGroup{}
-	wg.Add(len(m.observers))
 
 	for _, v := range m.observers {
-		go func(obs Observer) {
+		wg.Go(func() {
-			defer wg.Done()
+			v.EventReplayAttack(evt)
-
+		})
-			obs.EventReplayAttack(evt)
-		}(v)
 	}
 
 	wg.Wait()
@@ -132,14 +108,11 @@ func (m multiObserver) EventReplayAttack(evt mtglib.EventReplayAttack) {
 
 func (m multiObserver) EventIPListSize(evt mtglib.EventIPListSize) {
 	wg := &sync.WaitGroup{}
-	wg.Add(len(m.observers))
 
 	for _, v := range m.observers {
-		go func(obs Observer) {
+		wg.Go(func() {
-			defer wg.Done()
+			v.EventIPListSize(evt)
-
+		})
-			obs.EventIPListSize(evt)
-		}(v)
 	}
 
 	wg.Wait()

example.config.toml

@@ -23,17 +23,19 @@ secret = "ee367a189aee18fa31c190054efd4a8e9573746f726167652e676f6f676c6561706973
 # Host:port pair to run proxy on.
 bind-to = "0.0.0.0:3128"
 
+# This defines what types of traffic mtg listens to. If you are not sure,
+# then definitely keep it disable. Enable it only and only if incoming traffic
+# is coming from some sort of load-balancer like HAProxy or ELB.
+# https://www.haproxy.org/download/2.3/doc/proxy-protocol.txt
+#
+# mtg uses a library that supports v1 and v2 versions of ProxyProtocol.
+# default value is false.
+# proxy-protocol-listener = false
+
 # Defines how many concurrent connections are allowed to this proxy.
 # All other incoming connections are going to be dropped.
 concurrency = 8192
 
-# A size of user-space buffer for TCP to use. Since we do 2 connections,
-# then we have tcp-buffer * (4 + 2) per each connection: read/write for
-# each connection + 2 copy buffers to pump the data between sockets.
-#
-# Deprecated: this setting is no longer makes any effect.
-# tcp-buffer = "4kb"
-
 # Sometimes you want to enforce mtg to use some types of
 # IP connectivity to Telegram. We have 4 modes:
 #   - prefer-ipv6:
@@ -46,9 +48,35 @@ concurrency = 8192
 #     Only ipv4 connectivity is used
 prefer-ip = "prefer-ipv6"
 
+# If this setting is set, then mtg will try to get proxy updates from Telegram
+# Usually this is completely fine to have it disabled, because mtg has a list
+# of some core proxies hardcoded.
+auto-update = false
+
 # FakeTLS uses domain fronting protection. So it needs to know a port to
 # access.
-domain-fronting-port = 443
+#
+# Deprecated: use [domain-fronting] configuration block. If relevant option
+# is defined there, this one would be ignored.
+# domain-fronting-port = 443
+
+# By default, mtg resolves the fronting hostname (from the secret) via DNS
+# to establish a TCP connection. If DNS resolution of that hostname is blocked,
+# you can specify an IP address to connect to directly. The hostname is still
+# used for SNI in the TLS handshake.
+#
+# default value is not set (DNS resolution is used).
+#
+# Deprecated: use [domain-fronting] configuration block. If relevant option
+# is defined there, this one would be ignored.
+# domain-fronting-ip = "10.0.0.10"
+
+# This makes a communication between both fronting website and mtg to use
+# proxy protocol.
+#
+# Deprecated: use [domain-fronting] configuration block. If relevant option
+# is defined there, this one would be ignored.
+# domain-fronting-proxy-protocol = false
 
 # FakeTLS can compare timestamps to prevent probes. Each message has
 # encrypted timestamp. So, mtg can compare this timestamp and decide if
@@ -71,6 +99,27 @@ tolerate-time-skewness = "5s"
 # Otherwise, chose a new DC.
 allow-fallback-on-unknown-dc = false
 
+# This section is relevant to communication with fronting domain. Usually
+# you do not need to setup anything here but there are plenty of cases, especially
+# if you put mtg behind load balancer, when some specific configuration is
+# required.
+[domain-fronting]
+# By default, mtg resolves the fronting hostname (from the secret) via DNS
+# to establish a TCP connection. If DNS resolution of that hostname is blocked,
+# you can specify an IP address to connect to directly. The hostname is still
+# used for SNI in the TLS handshake.
+#
+# default value is not set (DNS resolution is used).
+# ip = "10.10.10.11"
+
+# FakeTLS uses domain fronting protection. So it needs to know a port to
+# access. Default value is 443
+# port = 443
+
+# This makes a communication between both fronting website and mtg to use
+# proxy protocol.
+# proxy-protocol = false
+
 # network defines different network-related settings
 [network]
 # please be aware that mtg needs to do some external requests. For
@@ -84,8 +133,43 @@ allow-fallback-on-unknown-dc = false
 # resolver of the operating system and uses DOH instead. This is a host
 # it has to access.
 #
-# By default we use Quad9.
+# By default we use Cloudflare.
-doh-ip = "9.9.9.9"
+#
+# DEPRECATED option:
+#  If dns option is specified, it will be used instead. No default is defined
+#  anymore. But if you set this option, this is literally the same providing
+#  https:// URL to `dns`.
+#
+#  In other words:
+#
+#    doh-ip = "1.1.1.1"
+#
+# is literally the same as
+#
+#    dns = "https://1.1.1.1"
+# doh-ip = "1.1.1.1"
+
+# Starting from mtg v2.1.12 we have changed a configuration for DNS. Now it
+# supports DNS-over-HTTPS, DNS-over-TLS, custom UDP resolver and system
+# resolver.
+#
+# Here is how to define DNS-over-HTTPS:
+#  - https://1.1.1.1
+#  - https://1.1.1.1/dns-query
+#  - https://cloudflare-dns.com/dns-query
+#  - https://cloudflare-dns.com
+#
+# Here is how to define DNS-over-TLS:
+#  - tls://1.1.1.1
+#  - tls://cloudflare-dns.com
+#
+# Here is how to define a custom UDP resolver (we support only IPs here)
+#  - 1.1.1.1
+#  - udp://1.1.1.1
+#
+# If you set it to empty string, default resolver will be used.
+# But please comment out doh-ip
+dns = "https://1.1.1.1"
 
 # mtg can work via proxies (for now, we support only socks5). Proxy
 # configuration is done via list. So, you can specify many proxies
@@ -100,25 +184,13 @@ doh-ip = "9.9.9.9"
 #
 # Proxy configuration is done via ordinary URI schema:
 #
-#     socks5://user:password@host:port?open_threshold=5&half_open_timeout=1m&reset_failures_timeout=10s
+#     socks5://user:password@host:port
 #
 # Only socks5 proxy is used. user/password is optional. As you can
 # see, you can specify some parameters in GET query. These parameters
 # configure circuit breaker.
-#
-# open_threshold means a number of errors which should happen so we stop
-# use a proxy.
-#
-# half_open_timeout means a time period (in Golang duration notation)
-# after which we can retry with this proxy
-#
-# reset_failures_timeout means a time period when we flush out errors
-# when circuit breaker in closed state.
-#
-# Please see https://docs.microsoft.com/en-us/azure/architecture/patterns/circuit-breaker
-# on details about circuit breakers.
 proxies = [
-    # "socks5://user:password@host:port?open_threshold=5&half_open_timeout=1m&reset_failures_timeout=10s"
+    # "socks5://user:password@host:port"
 ]
 
 # network timeouts define different settings for timeouts. tcp timeout

go.mod

@@ -1,57 +1,56 @@
 module github.com/9seconds/mtg/v2
 
-go 1.18
+go 1.26
 
 require (
 	github.com/OneOfOne/xxhash v1.2.8
-	github.com/alecthomas/kong v0.5.0
+	github.com/alecthomas/kong v1.14.0
-	github.com/alecthomas/units v0.0.0-20211218093645-b94a6e3cc137
+	github.com/alecthomas/units v0.0.0-20240927000941-0f3dac36c52b
 	github.com/armon/go-socks5 v0.0.0-20160902184237-e75332964ef5
 	github.com/babolivier/go-doh-client v0.0.0-20201028162107-a76cff4cb8b6
 	github.com/d4l3k/messagediff v1.2.1 // indirect
-	github.com/golang/protobuf v1.5.2 // indirect
-	github.com/gotd/td v0.34.0
 	github.com/jarcoal/httpmock v1.0.8
 	github.com/mccutchen/go-httpbin v1.1.1
-	github.com/panjf2000/ants/v2 v2.4.8
+	github.com/panjf2000/ants/v2 v2.11.5
-	github.com/pelletier/go-toml v1.9.4
+	github.com/prometheus/client_golang v1.23.2
-	github.com/prometheus/client_golang v1.12.1
+	github.com/prometheus/common v0.67.5 // indirect
-	github.com/prometheus/common v0.32.1 // indirect
+	github.com/prometheus/procfs v0.20.0 // indirect
-	github.com/prometheus/procfs v0.7.3 // indirect
+	github.com/rs/zerolog v1.34.0
-	github.com/rs/zerolog v1.26.1
+	github.com/smira/go-statsd v1.3.4
-	github.com/smira/go-statsd v1.3.2
+	github.com/stretchr/objx v0.5.2 // indirect
-	github.com/stretchr/objx v0.3.0 // indirect
+	github.com/stretchr/testify v1.11.1
-	github.com/stretchr/testify v1.7.0
+	github.com/tylertreat/BoomFilters v0.0.0-20251117164519-53813c36cc1b
-	github.com/tylertreat/BoomFilters v0.0.0-20210315201527-1a82519a3e43
+	golang.org/x/crypto v0.48.0
-	golang.org/x/crypto v0.0.0-20220315160706-3147a52a75dd
+	golang.org/x/net v0.51.0
-	golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2 // indirect
+	golang.org/x/sys v0.41.0
-	golang.org/x/sys v0.0.0-20220319134239-a9b59b0215f8
+	google.golang.org/protobuf v1.36.11 // indirect
-	google.golang.org/protobuf v1.27.1 // indirect
 )
 
 require (
-	github.com/txthinking/socks5 v0.0.0-20220212043548-414499347d4a
+	github.com/ncruces/go-dns v1.3.2
+	github.com/pelletier/go-toml/v2 v2.2.4
+	github.com/pires/go-proxyproto v0.11.0
+	github.com/things-go/go-socks5 v0.1.0
+	github.com/txthinking/socks5 v0.0.0-20251011041537-5c31f201a10e
 	github.com/yl2chen/cidranger v1.0.2
 )
 
 require (
 	github.com/beorn7/perks v1.0.1 // indirect
-	github.com/cenkalti/backoff/v4 v4.1.0 // indirect
+	github.com/cespare/xxhash/v2 v2.3.0 // indirect
-	github.com/cespare/xxhash/v2 v2.1.2 // indirect
 	github.com/davecgh/go-spew v1.1.1 // indirect
-	github.com/gotd/ige v0.1.5 // indirect
+	github.com/klauspost/compress v1.18.3 // indirect
-	github.com/gotd/xor v0.1.1 // indirect
+	github.com/kr/text v0.2.0 // indirect
-	github.com/matttproud/golang_protobuf_extensions v1.0.1 // indirect
+	github.com/mattn/go-colorable v0.1.14 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
 	github.com/patrickmn/go-cache v2.1.0+incompatible // indirect
-	github.com/pkg/errors v0.9.1 // indirect
 	github.com/pmezard/go-difflib v1.0.0 // indirect
-	github.com/prometheus/client_model v0.2.0 // indirect
+	github.com/prometheus/client_model v0.6.2 // indirect
-	github.com/txthinking/runnergroup v0.0.0-20220212043759-8da8edb7dae8 // indirect
+	github.com/rogpeppe/go-internal v1.14.1 // indirect
-	github.com/txthinking/x v0.0.0-20210326105829-476fab902fbe // indirect
+	github.com/txthinking/runnergroup v0.0.0-20250224021307-5864ffeb65ae // indirect
-	go.uber.org/atomic v1.7.0 // indirect
+	go.yaml.in/yaml/v2 v2.4.3 // indirect
-	go.uber.org/multierr v1.6.0 // indirect
+	golang.org/x/sync v0.19.0 // indirect
-	go.uber.org/zap v1.16.0 // indirect
+	golang.org/x/tools v0.41.0 // indirect
-	golang.org/x/sync v0.0.0-20210220032951-036812b2e83c // indirect
+	gopkg.in/yaml.v3 v3.0.1 // indirect
-	golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 // indirect
-	gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b // indirect
 )

go.sum

@@ -1,587 +1,162 @@
-cloud.google.com/go v0.26.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-cloud.google.com/go v0.34.0/go.mod h1:aQUYkXzVsufM+DwF1aE+0xfcU+56JwCaLick0ClmMTw=
-cloud.google.com/go v0.38.0/go.mod h1:990N+gfupTy94rShfmMCWGDn0LpTmnzTp2qbd1dvSRU=
-cloud.google.com/go v0.44.1/go.mod h1:iSa0KzasP4Uvy3f1mN/7PiObzGgflwredwwASm/v6AU=
-cloud.google.com/go v0.44.2/go.mod h1:60680Gw3Yr4ikxnPRS/oxxkBccT6SA1yMk63TGekxKY=
-cloud.google.com/go v0.45.1/go.mod h1:RpBamKRgapWJb87xiFSdk4g1CME7QZg3uwTez+TSTjc=
-cloud.google.com/go v0.46.3/go.mod h1:a6bKKbmY7er1mI7TEI4lsAkts/mkhTSZK8w33B4RAg0=
-cloud.google.com/go v0.50.0/go.mod h1:r9sluTvynVuxRIOHXQEHMFffphuXHOMZMycpNR5e6To=
-cloud.google.com/go v0.52.0/go.mod h1:pXajvRH/6o3+F9jDHZWQ5PbGhn+o8w9qiu/CffaVdO4=
-cloud.google.com/go v0.53.0/go.mod h1:fp/UouUEsRkN6ryDKNW/Upv/JBKnv6WDthjR6+vze6M=
-cloud.google.com/go v0.54.0/go.mod h1:1rq2OEkV3YMf6n/9ZvGWI3GWw0VoqH/1x2nd8Is/bPc=
-cloud.google.com/go v0.56.0/go.mod h1:jr7tqZxxKOVYizybht9+26Z/gUq7tiRzu+ACVAMbKVk=
-cloud.google.com/go v0.57.0/go.mod h1:oXiQ6Rzq3RAkkY7N6t3TcE6jE+CIBBbA36lwQ1JyzZs=
-cloud.google.com/go v0.62.0/go.mod h1:jmCYTdRCQuc1PHIIJ/maLInMho30T/Y0M4hTdTShOYc=
-cloud.google.com/go v0.65.0/go.mod h1:O5N8zS7uWy9vkA9vayVHs65eM1ubvY4h553ofrNHObY=
-cloud.google.com/go/bigquery v1.0.1/go.mod h1:i/xbL2UlR5RvWAURpBYZTtm/cXjCha9lbfbpx4poX+o=
-cloud.google.com/go/bigquery v1.3.0/go.mod h1:PjpwJnslEMmckchkHFfq+HTD2DmtT67aNFKH1/VBDHE=
-cloud.google.com/go/bigquery v1.4.0/go.mod h1:S8dzgnTigyfTmLBfrtrhyYhwRxG72rYxvftPBK2Dvzc=
-cloud.google.com/go/bigquery v1.5.0/go.mod h1:snEHRnqQbz117VIFhE8bmtwIDY80NLUZUMb4Nv6dBIg=
-cloud.google.com/go/bigquery v1.7.0/go.mod h1://okPTzCYNXSlb24MZs83e2Do+h+VXtc4gLoIoXIAPc=
-cloud.google.com/go/bigquery v1.8.0/go.mod h1:J5hqkt3O0uAFnINi6JXValWIb1v0goeZM77hZzJN/fQ=
-cloud.google.com/go/datastore v1.0.0/go.mod h1:LXYbyblFSglQ5pkeyhO+Qmw7ukd3C+pD7TKLgZqpHYE=
-cloud.google.com/go/datastore v1.1.0/go.mod h1:umbIZjpQpHh4hmRpGhH4tLFup+FVzqBi1b3c64qFpCk=
-cloud.google.com/go/pubsub v1.0.1/go.mod h1:R0Gpsv3s54REJCy4fxDixWD93lHJMoZTyQ2kNxGRt3I=
-cloud.google.com/go/pubsub v1.1.0/go.mod h1:EwwdRX2sKPjnvnqCa270oGRyludottCI76h+R3AArQw=
-cloud.google.com/go/pubsub v1.2.0/go.mod h1:jhfEVHT8odbXTkndysNHCcx0awwzvfOlguIAii9o8iA=
-cloud.google.com/go/pubsub v1.3.1/go.mod h1:i+ucay31+CNRpDW4Lu78I4xXG+O1r/MAHgjpRVR+TSU=
-cloud.google.com/go/storage v1.0.0/go.mod h1:IhtSnM/ZTZV8YYJWCY8RULGVqBDmpoyjwiyrjsg+URw=
-cloud.google.com/go/storage v1.5.0/go.mod h1:tpKbwo567HUNpVclU5sGELwQWBDZ8gh0ZeosJ0Rtdos=
-cloud.google.com/go/storage v1.6.0/go.mod h1:N7U0C8pVQ/+NIKOBQyamJIeKQKkZ+mxpohlUTyfDhBk=
-cloud.google.com/go/storage v1.8.0/go.mod h1:Wv1Oy7z6Yz3DshWRJFhqM/UCfaWIRTdp0RXyy7KQOVs=
-cloud.google.com/go/storage v1.10.0/go.mod h1:FLPqc6j+Ki4BU591ie1oL6qBQGu2Bl/tZ9ullr3+Kg0=
-dmitri.shuralyov.com/gpu/mtl v0.0.0-20190408044501-666a987793e9/go.mod h1:H6x//7gZCb22OMCxBHrMx7a5I7Hp++hsVxbQ4BYO7hU=
-github.com/BurntSushi/toml v0.3.1 h1:WXkYYl6Yr3qBf1K79EBnL4mak0OimBfB0XUf9Vl28OQ=
-github.com/BurntSushi/toml v0.3.1/go.mod h1:xHWCNGjB5oqiDr8zfno3MHue2Ht5sIBksp03qcyfWMU=
-github.com/BurntSushi/xgb v0.0.0-20160522181843-27f122750802/go.mod h1:IVnqGOEym/WlBOVXweHU+Q+/VP0lqqI8lqeDx9IjBqo=
 github.com/OneOfOne/xxhash v1.2.8 h1:31czK/TI9sNkxIKfaUfGlU47BAxQ0ztGgd9vPyqimf8=
 github.com/OneOfOne/xxhash v1.2.8/go.mod h1:eZbhyaAYD41SGSSsnmcpxVoRiQ/MPUTjUdIIOT9Um7Q=
-github.com/PuerkitoBio/goquery v1.6.1/go.mod h1:GsLWisAFVj4WgDibEWF4pvYnkVQBpKBKeU+7zCJoLcc=
+github.com/alecthomas/assert/v2 v2.11.0 h1:2Q9r3ki8+JYXvGsDyBXwH3LcJ+WK5D0gc5E8vS6K3D0=
-github.com/alecthomas/kong v0.5.0 h1:u8Kdw+eeml93qtMZ04iei0CFYve/WPcA5IFh+9wSskE=
+github.com/alecthomas/assert/v2 v2.11.0/go.mod h1:Bze95FyfUr7x34QZrjL+XP+0qgp/zg8yS+TtBj1WA3k=
-github.com/alecthomas/kong v0.5.0/go.mod h1:uzxf/HUh0tj43x1AyJROl3JT7SgsZ5m+icOv1csRhc0=
+github.com/alecthomas/kong v1.14.0 h1:gFgEUZWu2ZmZ+UhyZ1bDhuutbKN1nTtJTwh19Wsn21s=
-github.com/alecthomas/repr v0.0.0-20210801044451-80ca428c5142 h1:8Uy0oSf5co/NZXje7U1z8Mpep++QJOldL2hs/sBQf48=
+github.com/alecthomas/kong v1.14.0/go.mod h1:wrlbXem1CWqUV5Vbmss5ISYhsVPkBb1Yo7YKJghju2I=
-github.com/alecthomas/repr v0.0.0-20210801044451-80ca428c5142/go.mod h1:2kn6fqh/zIyPLmm3ugklbEi5hg5wS435eygvNfaDQL8=
+github.com/alecthomas/repr v0.5.2 h1:SU73FTI9D1P5UNtvseffFSGmdNci/O6RsqzeXJtP0Qs=
-github.com/alecthomas/template v0.0.0-20160405071501-a0175ee3bccc/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
+github.com/alecthomas/repr v0.5.2/go.mod h1:Fr0507jx4eOXV7AlPV6AVZLYrLIuIeSOWtW57eE/O/4=
-github.com/alecthomas/template v0.0.0-20190718012654-fb15b899a751/go.mod h1:LOuyumcjzFXgccqObfd/Ljyb9UuFJ6TxHnclSeseNhc=
+github.com/alecthomas/units v0.0.0-20240927000941-0f3dac36c52b h1:mimo19zliBX/vSQ6PWWSL9lK8qwHozUj03+zLoEB8O0=
-github.com/alecthomas/units v0.0.0-20151022065526-2efee857e7cf/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
+github.com/alecthomas/units v0.0.0-20240927000941-0f3dac36c52b/go.mod h1:fvzegU4vN3H1qMT+8wDmzjAcDONcgo2/SZ/TyfdUOFs=
-github.com/alecthomas/units v0.0.0-20190717042225-c3de453c63f4/go.mod h1:ybxpYRFXyAe+OPACYpWeL0wqObRcbAqCMya13uyzqw0=
-github.com/alecthomas/units v0.0.0-20190924025748-f65c72e2690d/go.mod h1:rBZYJk541a8SKzHPHnH3zbiI+7dagKZ0cgpgrD7Fyho=
-github.com/alecthomas/units v0.0.0-20211218093645-b94a6e3cc137 h1:s6gZFSlWYmbqAuRjVTiNNhvNRfY2Wxp9nhfyel4rklc=
-github.com/alecthomas/units v0.0.0-20211218093645-b94a6e3cc137/go.mod h1:OMCwj8VM1Kc9e19TLln2VL61YJF0x1XFtfdL4JdbSyE=
-github.com/andres-erbsen/clock v0.0.0-20160526145045-9e14626cd129/go.mod h1:rFgpPQZYZ8vdbc+48xibu8ALc3yeyd64IhHS+PU6Yyg=
-github.com/andybalholm/cascadia v1.1.0/go.mod h1:GsXiBklL0woXo1j/WYWtSYYC4ouU9PqHO0sqidkEA4Y=
 github.com/armon/go-socks5 v0.0.0-20160902184237-e75332964ef5 h1:0CwZNZbxp69SHPdPJAN/hZIm0C4OItdklCFmMRWYpio=
 github.com/armon/go-socks5 v0.0.0-20160902184237-e75332964ef5/go.mod h1:wHh0iHkYZB8zMSxRWpUBQtwG5a7fFgvEO+odwuTv2gs=
 github.com/babolivier/go-doh-client v0.0.0-20201028162107-a76cff4cb8b6 h1:4NNbNM2Iq/k57qEu7WfL67UrbPq1uFWxW4qODCohi+0=
 github.com/babolivier/go-doh-client v0.0.0-20201028162107-a76cff4cb8b6/go.mod h1:J29hk+f9lJrblVIfiJOtTFk+OblBawmib4uz/VdKzlg=
-github.com/beorn7/perks v0.0.0-20180321164747-3a771d992973/go.mod h1:Dwedo/Wpr24TaqPxmxbtue+5NUziq4I4S80YR8gNf3Q=
-github.com/beorn7/perks v1.0.0/go.mod h1:KWe93zE9D1o94FZ5RNwFwVgaQK1VOXiVxmqh+CedLV8=
 github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
 github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
-github.com/cenkalti/backoff/v4 v4.1.0 h1:c8LkOFQTzuO0WBM/ae5HdGQuZPfPxp7lqBRwQRm4fSc=
+github.com/cespare/xxhash/v2 v2.3.0 h1:UL815xU9SqsFlibzuggzjXhog7bL6oX9BbNZnL2UFvs=
-github.com/cenkalti/backoff/v4 v4.1.0/go.mod h1:scbssz8iZGpm3xbr14ovlUdkxfGXNInqkPWOWmG2CLw=
+github.com/cespare/xxhash/v2 v2.3.0/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
-github.com/census-instrumentation/opencensus-proto v0.2.1/go.mod h1:f6KPmirojxKA12rnyqOA5BBL4O983OfeGPqjHWSTneU=
+github.com/coreos/go-systemd/v22 v22.5.0/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
-github.com/cespare/xxhash/v2 v2.1.1/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
+github.com/creack/pty v1.1.9/go.mod h1:oKZEueFk5CKHvIhNR5MUki03XCEU+Q6VDXinZuGJ33E=
-github.com/cespare/xxhash/v2 v2.1.2 h1:YRXhKfTDauu4ajMg1TPgFO5jnlC2HCbmLXMcTG5cbYE=
-github.com/cespare/xxhash/v2 v2.1.2/go.mod h1:VGX0DQ3Q6kWi7AoAeZDth3/j3BFtOZR5XLFGgcrjCOs=
-github.com/chzyer/logex v1.1.10/go.mod h1:+Ywpsq7O8HXn0nuIou7OrIPyXbp3wmkHB+jjWRnGsAI=
-github.com/chzyer/readline v0.0.0-20180603132655-2972be24d48e/go.mod h1:nSuG5e5PlCu98SY8svDHJxuZscDgtXS6KTTbou5AhLI=
-github.com/chzyer/test v0.0.0-20180213035817-a1ea475d72b1/go.mod h1:Q3SI9o4m/ZMnBNeIyt5eFwwo7qiLfzFZmjNmxjkiQlU=
-github.com/client9/misspell v0.3.4/go.mod h1:qj6jICC3Q7zFZvVWo7KLAzC3yx5G7kyvSDkc90ppPyw=
-github.com/cncf/udpa/go v0.0.0-20191209042840-269d4d468f6f/go.mod h1:M8M6+tZqaGXZJjfX53e64911xZQV5JYwmTeXPW+k8Sc=
-github.com/coreos/go-systemd/v22 v22.3.2/go.mod h1:Y58oyj3AT4RCenI/lSvhwexgC+NSVTIJ3seZv2GcEnc=
 github.com/d4l3k/messagediff v1.2.1 h1:ZcAIMYsUg0EAp9X+tt8/enBE/Q8Yd5kzPynLyKptt9U=
 github.com/d4l3k/messagediff v1.2.1/go.mod h1:Oozbb1TVXFac9FtSIxHBMnBCq2qeH/2KkEQxENCrlLo=
 github.com/davecgh/go-spew v1.1.0/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
 github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
 github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
-github.com/envoyproxy/go-control-plane v0.9.0/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
-github.com/envoyproxy/go-control-plane v0.9.1-0.20191026205805-5f8ba28d4473/go.mod h1:YTl/9mNaCwkRvm6d1a2C3ymFceY/DCBVvsKhRF0iEA4=
-github.com/envoyproxy/go-control-plane v0.9.4/go.mod h1:6rpuAdCZL397s3pYoYcLgu1mIlRU8Am5FuJP05cCM98=
-github.com/envoyproxy/protoc-gen-validate v0.1.0/go.mod h1:iSmxcyjqTsJpI2R4NaDN7+kN2VEUnK/pcBlmesArF7c=
-github.com/go-gl/glfw v0.0.0-20190409004039-e6da0acd62b1/go.mod h1:vR7hzQXu2zJy9AVAgeJqvqgH9Q5CA+iKCZ2gyEVpxRU=
-github.com/go-gl/glfw/v3.3/glfw v0.0.0-20191125211704-12ad95a8df72/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
-github.com/go-gl/glfw/v3.3/glfw v0.0.0-20200222043503-6f7a984d4dc4/go.mod h1:tQ2UAYgL5IevRw8kRxooKSPJfGvJ9fJQFa0TUsXzTg8=
-github.com/go-kit/kit v0.8.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
-github.com/go-kit/kit v0.9.0/go.mod h1:xBxKIO96dXMWWy0MnWVtmwkA9/13aqxPnvrjFYMA2as=
-github.com/go-kit/log v0.1.0/go.mod h1:zbhenjAZHb184qTLMA9ZjW7ThYL0H2mk7Q6pNt4vbaY=
-github.com/go-logfmt/logfmt v0.3.0/go.mod h1:Qt1PoO58o5twSAckw1HlFXLmHsOX5/0LbT9GBnD5lWE=
-github.com/go-logfmt/logfmt v0.4.0/go.mod h1:3RMwSq7FuexP4Kalkev3ejPJsZTpXXBr9+V4qmtdjCk=
-github.com/go-logfmt/logfmt v0.5.0/go.mod h1:wCYkCAKZfumFQihp8CzCvQ3paCTfi41vtzG1KdI/P7A=
-github.com/go-openapi/inflect v0.19.0/go.mod h1:lHpZVlpIQqLyKwJ4N+YSc9hchQy/i12fJykb83CRBH4=
-github.com/go-stack/stack v1.8.0/go.mod h1:v0f6uXyyMGvRgIKkXu+yp6POWl0qKG85gN/melR3HDY=
 github.com/godbus/dbus/v5 v5.0.4/go.mod h1:xhWf0FNVPg57R7Z0UbKHbJfkEywrmjJnf7w5xrFpKfA=
-github.com/gogo/protobuf v1.1.1/go.mod h1:r8qH/GZQm5c6nD/R0oafs1akxWv10x8SbQlK7atdtwQ=
+github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
-github.com/golang/glog v0.0.0-20160126235308-23def4e6c14b/go.mod h1:SBH7ygxi8pfUlaOkMMuAQtPIUF8ecWP5IEl/CR7VP2Q=
+github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
-github.com/golang/groupcache v0.0.0-20190702054246-869f871628b6/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
+github.com/hexops/gotextdiff v1.0.3 h1:gitA9+qJrrTCsiCl7+kh75nPqQt1cx4ZkudSTLoUqJM=
-github.com/golang/groupcache v0.0.0-20191227052852-215e87163ea7/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
+github.com/hexops/gotextdiff v1.0.3/go.mod h1:pSWU5MAI3yDq+fZBTazCSJysOMbxWL1BSow5/V2vxeg=
-github.com/golang/groupcache v0.0.0-20200121045136-8c9f03a8e57e/go.mod h1:cIg4eruTrX1D+g88fzRXU5OdNfaM+9IcxsU14FzY7Hc=
-github.com/golang/mock v1.1.1/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
-github.com/golang/mock v1.2.0/go.mod h1:oTYuIxOrZwtPieC+H1uAHpcLFnEyAGVDL/k47Jfbm0A=
-github.com/golang/mock v1.3.1/go.mod h1:sBzyDLLjw3U8JLTeZvSv8jJB+tU5PVekmnlKIyFUx0Y=
-github.com/golang/mock v1.4.0/go.mod h1:UOMv5ysSaYNkG+OFQykRIcU/QvvxJf3p21QfJ2Bt3cw=
-github.com/golang/mock v1.4.1/go.mod h1:UOMv5ysSaYNkG+OFQykRIcU/QvvxJf3p21QfJ2Bt3cw=
-github.com/golang/mock v1.4.3/go.mod h1:UOMv5ysSaYNkG+OFQykRIcU/QvvxJf3p21QfJ2Bt3cw=
-github.com/golang/mock v1.4.4/go.mod h1:l3mdAwkq5BuhzHwde/uurv3sEJeZMXNpwsxVWU71h+4=
-github.com/golang/protobuf v1.2.0/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
-github.com/golang/protobuf v1.3.1/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
-github.com/golang/protobuf v1.3.2/go.mod h1:6lQm79b+lXiMfvg/cZm0SGofjICqVBUtrP5yJMmIC1U=
-github.com/golang/protobuf v1.3.3/go.mod h1:vzj43D7+SQXF/4pzW/hwtAqwc6iTitCiVSaWz5lYuqw=
-github.com/golang/protobuf v1.3.4/go.mod h1:vzj43D7+SQXF/4pzW/hwtAqwc6iTitCiVSaWz5lYuqw=
-github.com/golang/protobuf v1.3.5/go.mod h1:6O5/vntMXwX2lRkT1hjjk0nAC1IDOTvTlVgjlRvqsdk=
-github.com/golang/protobuf v1.4.0-rc.1/go.mod h1:ceaxUfeHdC40wWswd/P6IGgMaK3YpKi5j83Wpe3EHw8=
-github.com/golang/protobuf v1.4.0-rc.1.0.20200221234624-67d41d38c208/go.mod h1:xKAWHe0F5eneWXFV3EuXVDTCmh+JuBKY0li0aMyXATA=
-github.com/golang/protobuf v1.4.0-rc.2/go.mod h1:LlEzMj4AhA7rCAGe4KMBDvJI+AwstrUpVNzEA03Pprs=
-github.com/golang/protobuf v1.4.0-rc.4.0.20200313231945-b860323f09d0/go.mod h1:WU3c8KckQ9AFe+yFwt9sWVRKCVIyN9cPHBJSNnbL67w=
-github.com/golang/protobuf v1.4.0/go.mod h1:jodUvKwWbYaEsadDk5Fwe5c77LiNKVO9IDvqG2KuDX0=
-github.com/golang/protobuf v1.4.1/go.mod h1:U8fpvMrcmy5pZrNK1lt4xCsGvpyWQ/VVv6QDs8UjoX8=
-github.com/golang/protobuf v1.4.2/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
-github.com/golang/protobuf v1.4.3/go.mod h1:oDoupMAO8OvCJWAcko0GGGIgR6R6ocIYbsSw735rRwI=
-github.com/golang/protobuf v1.5.0/go.mod h1:FsONVRAS9T7sI+LIUmWTfcYkHO4aIWwzhcaSAoJOfIk=
-github.com/golang/protobuf v1.5.2 h1:ROPKBNFfQgOUMifHyP+KYbvpjbdoFNs+aK7DXlji0Tw=
-github.com/golang/protobuf v1.5.2/go.mod h1:XVQd3VNwM+JqD3oG2Ue2ip4fOMUkwXdXDdiuN0vRsmY=
-github.com/google/btree v0.0.0-20180813153112-4030bb1f1f0c/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
-github.com/google/btree v1.0.0/go.mod h1:lNA+9X1NB3Zf8V7Ke586lFgjr2dZNuvo3lPJSGZ5JPQ=
-github.com/google/go-cmp v0.2.0/go.mod h1:oXzfMopK8JAjlY9xF4vHSVASa0yLyX7SntLO5aqRK0M=
-github.com/google/go-cmp v0.3.0/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
-github.com/google/go-cmp v0.3.1/go.mod h1:8QqcDgzrUqlUb/G2PQTWiueGozuR1884gddMywk6iLU=
-github.com/google/go-cmp v0.4.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/google/go-cmp v0.4.1/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/google/go-cmp v0.5.0/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/google/go-cmp v0.5.1/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/google/go-cmp v0.5.4/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/google/go-cmp v0.5.5 h1:Khx7svrCpmxxtHBq5j2mp/xVjsi8hQMfNLvJFAlrGgU=
-github.com/google/go-cmp v0.5.5/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
-github.com/google/gofuzz v1.0.0/go.mod h1:dBl0BpW6vV/+mYPU4Po3pmUjxk6FQPldtuIdl/M65Eg=
-github.com/google/martian v2.1.0+incompatible/go.mod h1:9I4somxYTbIHy5NJKHRl3wXiIaQGbYVAs8BPL6v8lEs=
-github.com/google/martian/v3 v3.0.0/go.mod h1:y5Zk1BBys9G+gd6Jrk0W3cC1+ELVxBWuIGO+w/tUAp0=
-github.com/google/pprof v0.0.0-20181206194817-3ea8567a2e57/go.mod h1:zfwlbNMJ+OItoe0UupaVj+oy1omPYYDuagoSzA8v9mc=
-github.com/google/pprof v0.0.0-20190515194954-54271f7e092f/go.mod h1:zfwlbNMJ+OItoe0UupaVj+oy1omPYYDuagoSzA8v9mc=
-github.com/google/pprof v0.0.0-20191218002539-d4f498aebedc/go.mod h1:ZgVRPoUq/hfqzAqh7sHMqb3I9Rq5C59dIz2SbBwJ4eM=
-github.com/google/pprof v0.0.0-20200212024743-f11f1df84d12/go.mod h1:ZgVRPoUq/hfqzAqh7sHMqb3I9Rq5C59dIz2SbBwJ4eM=
-github.com/google/pprof v0.0.0-20200229191704-1ebb73c60ed3/go.mod h1:ZgVRPoUq/hfqzAqh7sHMqb3I9Rq5C59dIz2SbBwJ4eM=
-github.com/google/pprof v0.0.0-20200430221834-fc25d7d30c6d/go.mod h1:ZgVRPoUq/hfqzAqh7sHMqb3I9Rq5C59dIz2SbBwJ4eM=
-github.com/google/pprof v0.0.0-20200708004538-1a94d8640e99/go.mod h1:ZgVRPoUq/hfqzAqh7sHMqb3I9Rq5C59dIz2SbBwJ4eM=
-github.com/google/renameio v0.1.0/go.mod h1:KWCgfxg9yswjAJkECMjeO8J8rahYeXnNhOm40UhjYkI=
-github.com/googleapis/gax-go/v2 v2.0.4/go.mod h1:0Wqv26UfaUD9n4G6kQubkQ+KchISgw+vpHVxEJEs9eg=
-github.com/googleapis/gax-go/v2 v2.0.5/go.mod h1:DWXyrwAJ9X0FpwwEdw+IPEYBICEFu5mhpdKc/us6bOk=
-github.com/gotd/getdoc v0.6.2/go.mod h1:6Ul8cyaq+Aw0gVyuU+TKZPCmNjdlylzSIWVxjzI5t/U=
-github.com/gotd/ige v0.1.5 h1:qITql4hZpqPM/DSeO5IVlxzXJxrs4ZZiKRwPif2K76U=
-github.com/gotd/ige v0.1.5/go.mod h1:LbvqjUuGELVuHcKjfJZ2NPNzegICQU4eqrPAkXy0nTs=
-github.com/gotd/neo v0.1.2 h1:hayFfKNSH5RP/L+KKKnsKMdDNCdhSfzVuo5TF4wvpa8=
-github.com/gotd/neo v0.1.2/go.mod h1:9A2a4bn9zL6FADufBdt7tZt+WMhvZoc5gWXihOPoiBQ=
-github.com/gotd/td v0.34.0 h1:BLIdpv2sxbCuWI2fyXCECRQuLJdnYk3VMZDRKNog/E8=
-github.com/gotd/td v0.34.0/go.mod h1:4s/7cuEscdvZIecM/pVi5L3nTK+djSoVLAhgfk40OE4=
-github.com/gotd/tl v0.4.0/go.mod h1:CMIcjPWFS4qxxJ+1Ce7U/ilbtPrkoVo/t8uhN5Y/D7c=
-github.com/gotd/xor v0.1.0/go.mod h1:ZTmdgqf6SOHder8/MFp9CNkXIadzID5lIiaZxRZICH0=
-github.com/gotd/xor v0.1.1 h1:LSPEeuf7noTo4fi4PrEsAaWXOSwjsY2e+IINPiR+c7s=
-github.com/gotd/xor v0.1.1/go.mod h1:ZTmdgqf6SOHder8/MFp9CNkXIadzID5lIiaZxRZICH0=
-github.com/hashicorp/golang-lru v0.5.0/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
-github.com/hashicorp/golang-lru v0.5.1/go.mod h1:/m3WP610KZHVQ1SGc6re/UDhFvYD7pJ4Ao+sR/qLZy8=
-github.com/ianlancetaylor/demangle v0.0.0-20181102032728-5e5cf60278f6/go.mod h1:aSSvb/t6k1mPoxDqO4vJh6VOCGPwU4O0C2/Eqndh1Sc=
 github.com/jarcoal/httpmock v1.0.8 h1:8kI16SoO6LQKgPE7PvQuV+YuD/inwHd7fOOe2zMbo4k=
 github.com/jarcoal/httpmock v1.0.8/go.mod h1:ATjnClrvW/3tijVmpL/va5Z3aAyGvqU3gCT8nX0Txik=
-github.com/jpillora/backoff v1.0.0/go.mod h1:J/6gKK9jxlEcS3zixgDgUAsiuZ7yrSoa/FX5e0EB2j4=
+github.com/klauspost/compress v1.18.3 h1:9PJRvfbmTabkOX8moIpXPbMMbYN60bWImDDU7L+/6zw=
-github.com/json-iterator/go v1.1.6/go.mod h1:+SdeFBvtyEkXs7REEP0seUULqWtbJapLOCVDaaPEHmU=
+github.com/klauspost/compress v1.18.3/go.mod h1:R0h/fSBs8DE4ENlcrlib3PsXS61voFxhIs2DeRhCvJ4=
-github.com/json-iterator/go v1.1.10/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=
+github.com/kr/pretty v0.3.1 h1:flRD4NNwYAUpkphVc1HcthR4KEIFJ65n8Mw5qdRn3LE=
-github.com/json-iterator/go v1.1.11/go.mod h1:KdQUCv79m/52Kvf8AW2vK1V8akMuk1QjK/uOdHXbAo4=
+github.com/kr/pretty v0.3.1/go.mod h1:hoEshYVHaxMs3cyo3Yncou5ZscifuDolrwPKZanG3xk=
-github.com/json-iterator/go v1.1.12/go.mod h1:e30LSqwooZae/UwlEbR2852Gd8hjQvJoHmT4TnhNGBo=
+github.com/kr/text v0.2.0 h1:5Nx0Ya0ZqY2ygV366QzturHI13Jq95ApcVaJBhpS+AY=
-github.com/jstemmer/go-junit-report v0.0.0-20190106144839-af01ea7f8024/go.mod h1:6v2b51hI/fHJwM22ozAgKL4VKDeJcHhJFhtBdhmNjmU=
+github.com/kr/text v0.2.0/go.mod h1:eLer722TekiGuMkidMxC/pM04lWEeraHUUmBw8l2grE=
-github.com/jstemmer/go-junit-report v0.9.1/go.mod h1:Brl9GWCQeLvo8nXZwPNNblvFj/XSXhF0NWZEnDohbsk=
+github.com/kylelemons/godebug v1.1.0 h1:RPNrshWIDI6G2gRW9EHilWtl7Z6Sb1BR0xunSBf0SNc=
-github.com/julienschmidt/httprouter v1.2.0/go.mod h1:SYymIcj16QtmaHHD7aYtjjsJG7VTCxuUUipMqKk8s4w=
+github.com/kylelemons/godebug v1.1.0/go.mod h1:9/0rRGxNHcop5bhtWyNeEfOS8JIWk580+fNqagV/RAw=
-github.com/julienschmidt/httprouter v1.3.0/go.mod h1:JR6WtHb+2LUe8TCKY3cZOxFyyO8IZAc4RVcycCCAKdM=
+github.com/mattn/go-colorable v0.1.13/go.mod h1:7S9/ev0klgBDR4GtXTXX8a3vIGJpMovkB8vQcUbaXHg=
-github.com/k0kubun/colorstring v0.0.0-20150214042306-9440f1994b88/go.mod h1:3w7q1U84EfirKl04SVQ/s7nPm1ZPhiXd34z40TNz36k=
+github.com/mattn/go-colorable v0.1.14 h1:9A9LHSqF/7dyVVX6g0U9cwm9pG3kP9gSzcuIPHPsaIE=
-github.com/k0kubun/pp v2.4.0+incompatible/go.mod h1:GWse8YhT0p8pT4ir3ZgBbfZild3tgzSScAn6HmfYukg=
+github.com/mattn/go-colorable v0.1.14/go.mod h1:6LmQG8QLFO4G5z1gPvYEzlUgJ2wF+stgPZH1UqBm1s8=
-github.com/kisielk/gotool v1.0.0/go.mod h1:XhKaO+MFFWcvkIS/tQcRk01m1F5IRFswLeQ+oQHNcck=
+github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=
-github.com/konsorten/go-windows-terminal-sequences v1.0.1/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
+github.com/mattn/go-isatty v0.0.19/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
-github.com/konsorten/go-windows-terminal-sequences v1.0.3/go.mod h1:T0+1ngSBFLxvqU3pZ+m/2kptfBszLMUkC4ZK/EgS/cQ=
+github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
-github.com/kr/logfmt v0.0.0-20140226030751-b84e30acd515/go.mod h1:+0opPa2QZZtGFBFZlji/RkVcI2GknAs/DXo4wKdlNEc=
+github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
-github.com/kr/pretty v0.1.0 h1:L/CwN0zerZDmRFUapSPitk6f+Q3+0za1rQkzVuMiMFI=
-github.com/kr/pretty v0.1.0/go.mod h1:dAy3ld7l9f0ibDNOQOHHMYYIIbhfbHSm3C4ZsoJORNo=
-github.com/kr/pty v1.1.1/go.mod h1:pFQYn66WHrOpPYNljwOMqo10TkYh1fy3cYio2l3bCsQ=
-github.com/kr/text v0.1.0 h1:45sCR5RtlFHMR4UwH9sdQ5TC8v0qDQCHnXt+kaKSTVE=
-github.com/kr/text v0.1.0/go.mod h1:4Jbv+DJW3UT/LiOwJeYQe1efqtUx/iVham/4vfdArNI=
-github.com/mattn/go-colorable v0.1.2/go.mod h1:U0ppj6V5qS13XJ6of8GYAs25YV2eR4EVcfRqFIhoBtE=
-github.com/mattn/go-isatty v0.0.8/go.mod h1:Iq45c/XA43vh69/j3iqttzPXn0bhXyGjM0Hdxcsrc5s=
-github.com/mattn/go-isatty v0.0.9/go.mod h1:YNRxwqDuOph6SZLI9vUUz6OYw3QyUt7WiY2yME+cCiQ=
-github.com/matttproud/golang_protobuf_extensions v1.0.1 h1:4hp9jkHxhMHkqkrB3Ix0jegS5sx/RkqARlsWZ6pIwiU=
-github.com/matttproud/golang_protobuf_extensions v1.0.1/go.mod h1:D8He9yQNgCq6Z5Ld7szi9bcBfOoFv/3dc6xSMkL2PC0=
 github.com/mccutchen/go-httpbin v1.1.1 h1:aEws49HEJEyXHLDnshQVswfUlCVoS8g6h9YaDyaW7RE=
 github.com/mccutchen/go-httpbin v1.1.1/go.mod h1:fhpOYavp5g2K74XDl/ao2y4KvhqVtKlkg1e+0UaQv7I=
-github.com/modern-go/concurrent v0.0.0-20180228061459-e0a39a4cb421/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
+github.com/miekg/dns v1.1.51 h1:0+Xg7vObnhrz/4ZCZcZh7zPXlmU0aveS2HDBd0m0qSo=
-github.com/modern-go/concurrent v0.0.0-20180306012644-bacd9c7ef1dd/go.mod h1:6dJC0mAP4ikYIbvyc7fijjWJddQyLn8Ig3JB5CqoB9Q=
+github.com/miekg/dns v1.1.51/go.mod h1:2Z9d3CP1LQWihRZUf29mQ19yDThaI4DAYzte2CaQW5c=
-github.com/modern-go/reflect2 v0.0.0-20180701023420-4b7aa43c6742/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
+github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 h1:C3w9PqII01/Oq1c1nUAm88MOHcQC9l5mIlSMApZMrHA=
-github.com/modern-go/reflect2 v1.0.1/go.mod h1:bx2lNnkwVCuqBIxFjflWJWanXIb3RllmbCylyMrvgv0=
+github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822/go.mod h1:+n7T8mK8HuQTcFwEeznm/DIxMOiR9yIdICNftLE1DvQ=
-github.com/modern-go/reflect2 v1.0.2/go.mod h1:yWuevngMOJpCy52FWWMvUC8ws7m/LJsjYzDa0/r8luk=
+github.com/ncruces/go-dns v1.3.2 h1:kBLuUZBgkQ4qF4WDXZRQ4rG0Gk6sLVJQ5tESkWrxUa0=
-github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
+github.com/ncruces/go-dns v1.3.2/go.mod h1:tuzixNY8PY/M7yUzcvRbUaeLs3ifIdydpi5H2bfRU+s=
-github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
+github.com/panjf2000/ants/v2 v2.11.5 h1:a7LMnMEeux/ebqTux140tRiaqcFTV0q2bEHF03nl6Rg=
-github.com/panjf2000/ants/v2 v2.4.8 h1:JgTbolX6K6RreZ4+bfctI0Ifs+3mrE5BIHudQxUDQ9k=
+github.com/panjf2000/ants/v2 v2.11.5/go.mod h1:8u92CYMUc6gyvTIw8Ru7Mt7+/ESnJahz5EVtqfrilek=
-github.com/panjf2000/ants/v2 v2.4.8/go.mod h1:f6F0NZVFsGCp5A7QW/Zj/m92atWwOkY0OIhFxRNFr4A=
 github.com/patrickmn/go-cache v2.1.0+incompatible h1:HRMgzkcYKYpi3C8ajMPV8OFXaaRUnok+kx1WdO15EQc=
 github.com/patrickmn/go-cache v2.1.0+incompatible/go.mod h1:3Qf8kWWT7OJRJbdiICTKqZju1ZixQ/KpMGzzAfe6+WQ=
-github.com/pelletier/go-toml v1.9.4 h1:tjENF6MfZAg8e4ZmZTeWaWiT2vXtsoO6+iuOjFhECwM=
+github.com/pelletier/go-toml/v2 v2.2.4 h1:mye9XuhQ6gvn5h28+VilKrrPoQVanw5PMw/TB0t5Ec4=
-github.com/pelletier/go-toml v1.9.4/go.mod h1:u1nR/EPcESfeI/szUZKdtJ0xRNbUoANCkoOuaOx1Y+c=
+github.com/pelletier/go-toml/v2 v2.2.4/go.mod h1:2gIqNv+qfxSVS7cM2xJQKtLSTLUE9V8t9Stt+h56mCY=
-github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e/go.mod h1:pJLUxLENpZxwdsKMEsNbx1VGcRFpLqf3715MtcvvzbA=
+github.com/pires/go-proxyproto v0.11.0 h1:gUQpS85X/VJMdUsYyEgyn59uLJvGqPhJV5YvG68wXH4=
-github.com/pkg/errors v0.8.0/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
+github.com/pires/go-proxyproto v0.11.0/go.mod h1:ZKAAyp3cgy5Y5Mo4n9AlScrkCZwUy0g3Jf+slqQVcuU=
-github.com/pkg/errors v0.8.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
-github.com/pkg/errors v0.9.1 h1:FEBLx1zS214owpjy7qsBeixbURkuhQAwrK5UwLGTwt4=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/prometheus/client_golang v0.9.1/go.mod h1:7SWBe2y4D6OKWSNQJUaRYU/AaXPKyh/dDVn+NZz0KFw=
+github.com/prometheus/client_golang v1.23.2 h1:Je96obch5RDVy3FDMndoUsjAhG5Edi49h0RJWRi/o0o=
-github.com/prometheus/client_golang v1.0.0/go.mod h1:db9x61etRT2tGnBNRi70OPL5FsnadC4Ky3P0J6CfImo=
+github.com/prometheus/client_golang v1.23.2/go.mod h1:Tb1a6LWHB3/SPIzCoaDXI4I8UHKeFTEQ1YCr+0Gyqmg=
-github.com/prometheus/client_golang v1.7.1/go.mod h1:PY5Wy2awLA44sXw4AOSfFBetzPP4j5+D6mVACh+pe2M=
+github.com/prometheus/client_model v0.6.2 h1:oBsgwpGs7iVziMvrGhE53c/GrLUsZdHnqNwqPLxwZyk=
-github.com/prometheus/client_golang v1.11.0/go.mod h1:Z6t4BnS23TR94PD6BsDNk8yVqroYurpAkEiz0P2BEV0=
+github.com/prometheus/client_model v0.6.2/go.mod h1:y3m2F6Gdpfy6Ut/GBsUqTWZqCUvMVzSfMLjcu6wAwpE=
-github.com/prometheus/client_golang v1.12.1 h1:ZiaPsmm9uiBeaSMRznKsCDNtPCS0T3JVDGF+06gjBzk=
+github.com/prometheus/common v0.67.5 h1:pIgK94WWlQt1WLwAC5j2ynLaBRDiinoAb86HZHTUGI4=
-github.com/prometheus/client_golang v1.12.1/go.mod h1:3Z9XVyYiZYEO+YQWt3RD2R3jrbd179Rt297l4aS6nDY=
+github.com/prometheus/common v0.67.5/go.mod h1:SjE/0MzDEEAyrdr5Gqc6G+sXI67maCxzaT3A2+HqjUw=
-github.com/prometheus/client_model v0.0.0-20180712105110-5c3871d89910/go.mod h1:MbSGuTsp3dbXC40dX6PRTWyKYBIrTGTE9sqQNg2J8bo=
+github.com/prometheus/procfs v0.20.0 h1:AA7aCvjxwAquZAlonN7888f2u4IN8WVeFgBi4k82M4Q=
-github.com/prometheus/client_model v0.0.0-20190129233127-fd36f4220a90/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
+github.com/prometheus/procfs v0.20.0/go.mod h1:o9EMBZGRyvDrSPH1RqdxhojkuXstoe4UlK79eF5TGGo=
-github.com/prometheus/client_model v0.0.0-20190812154241-14fe0d1b01d4/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
+github.com/rogpeppe/go-internal v1.14.1 h1:UQB4HGPB6osV0SQTLymcB4TgvyWu6ZyliaW0tI/otEQ=
-github.com/prometheus/client_model v0.2.0 h1:uq5h0d+GuxiXLJLNABMgp2qUWDPiLvgCzz2dUR+/W/M=
+github.com/rogpeppe/go-internal v1.14.1/go.mod h1:MaRKkUm5W0goXpeCfT7UZI6fk/L7L7so1lCWt35ZSgc=
-github.com/prometheus/client_model v0.2.0/go.mod h1:xMI15A0UPsDsEKsMN9yxemIoYk6Tm2C1GtYGdfGttqA=
+github.com/rs/xid v1.6.0/go.mod h1:7XoLgs4eV+QndskICGsho+ADou8ySMSjJKDIan90Nz0=
-github.com/prometheus/common v0.4.1/go.mod h1:TNfzLD0ON7rHzMJeJkieUDPYmFC7Snx/y86RQel1bk4=
+github.com/rs/zerolog v1.34.0 h1:k43nTLIwcTVQAncfCw4KZ2VY6ukYoZaBPNOE8txlOeY=
-github.com/prometheus/common v0.10.0/go.mod h1:Tlit/dnDKsSWFlCLTWaA1cyBgKHSMdTB80sz/V91rCo=
+github.com/rs/zerolog v1.34.0/go.mod h1:bJsvje4Z08ROH4Nhs5iH600c3IkWhwp44iRc54W6wYQ=
-github.com/prometheus/common v0.26.0/go.mod h1:M7rCNAaPfAosfx8veZJCuw84e35h3Cfd9VFqTh1DIvc=
+github.com/smira/go-statsd v1.3.4 h1:kBYWcLSGT+qC6JVbvfz48kX7mQys32fjDOPrfmsSx2c=
-github.com/prometheus/common v0.32.1 h1:hWIdL3N2HoUx3B8j3YN9mWor0qhY/NlEKZEaXxuIRh4=
+github.com/smira/go-statsd v1.3.4/go.mod h1:RjdsESPgDODtg1VpVVf9MJrEW2Hw0wtRNbmB1CAhu6A=
-github.com/prometheus/common v0.32.1/go.mod h1:vu+V0TpY+O6vW9J44gczi3Ap/oXXR10b+M/gUGO4Hls=
-github.com/prometheus/procfs v0.0.0-20181005140218-185b4288413d/go.mod h1:c3At6R/oaqEKCNdg8wHV1ftS6bRYblBhIjjI8uT2IGk=
-github.com/prometheus/procfs v0.0.2/go.mod h1:TjEm7ze935MbeOT/UhFTIMYKhuLP4wbCsTZCD3I8kEA=
-github.com/prometheus/procfs v0.1.3/go.mod h1:lV6e/gmhEcM9IjHGsFOCxxuZ+z1YqCvr4OA4YeYWdaU=
-github.com/prometheus/procfs v0.6.0/go.mod h1:cz+aTbrPOrUb4q7XlbU9ygM+/jj0fzG6c1xBZuNvfVA=
-github.com/prometheus/procfs v0.7.3 h1:4jVXhlkAyzOScmCkXBTOLRLTz8EeU+eyjrwB/EPq0VU=
-github.com/prometheus/procfs v0.7.3/go.mod h1:cz+aTbrPOrUb4q7XlbU9ygM+/jj0fzG6c1xBZuNvfVA=
-github.com/quasilyte/go-ruleguard/dsl v0.3.2/go.mod h1:KeCP03KrjuSO0H1kTuZQCWlQPulDV6YMIXmpQss17rU=
-github.com/rogpeppe/go-internal v1.3.0/go.mod h1:M8bDsm7K2OlrFYOpmOWEs/qY81heoFRclV5y23lUDJ4=
-github.com/rogpeppe/go-internal v1.8.0/go.mod h1:WmiCO8CzOY8rg0OYDC4/i/2WRWAB6poM+XZ2dLUbcbE=
-github.com/rs/xid v1.3.0/go.mod h1:trrq9SKmegXys3aeAKXMUTdJsYXVwGY3RLcfgqegfbg=
-github.com/rs/zerolog v1.26.1 h1:/ihwxqH+4z8UxyI70wM1z9yCvkWcfz/a3mj48k/Zngc=
-github.com/rs/zerolog v1.26.1/go.mod h1:/wSSJWX7lVrsOwlbyTRSOJvqRlc+WjWlfes+CiJ+tmc=
-github.com/sebdah/goldie/v2 v2.5.3/go.mod h1:oZ9fp0+se1eapSRjfYbsV/0Hqhbuu3bJVvKI/NNtssI=
-github.com/sergi/go-diff v1.0.0/go.mod h1:0CfEIISq7TuYL3j771MWULgwwjU+GofnZX9QAmXWZgo=
-github.com/sergi/go-diff v1.1.0/go.mod h1:STckp+ISIX8hZLjrqAeVduY0gWCT9IjLuqbuNXdaHfM=
-github.com/sirupsen/logrus v1.2.0/go.mod h1:LxeOpSwHxABJmUn/MG1IvRgCAasNZTLOkJPxbbu5VWo=
-github.com/sirupsen/logrus v1.4.2/go.mod h1:tLMulIdttU9McNUspp0xgXVQah82FyeX6MwdIuYE2rE=
-github.com/sirupsen/logrus v1.6.0/go.mod h1:7uNnSEd1DgxDLC74fIahvMZmmYsHGZGEOFrfsX/uA88=
-github.com/smira/go-statsd v1.3.2 h1:1EeuzxNZ/TD9apbTOFSM9nulqfcsQFmT4u1A2DREabI=
-github.com/smira/go-statsd v1.3.2/go.mod h1:1srXJ9/pbnN04G8f4F1jUzsGOnwkPKXciyqpewGlkC4=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
-github.com/stretchr/objx v0.1.1/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
+github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
-github.com/stretchr/objx v0.3.0 h1:NGXK3lHquSN08v5vWalVI/L8XU9hdzE/G6xsrze47As=
+github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=
-github.com/stretchr/objx v0.3.0/go.mod h1:qt09Ya8vawLte6SNmTgCsAVtYtaKzEcn8ATUoHMkEqE=
+github.com/stretchr/objx v0.5.2 h1:xuMeJ0Sdp5ZMRXx/aWO6RZxdr3beISkG5/G/aIRr3pY=
-github.com/stretchr/testify v1.2.2/go.mod h1:a8OnRcib4nhh0OaRAV+Yts87kKdq0PP7pXfy6kDkUVs=
+github.com/stretchr/objx v0.5.2/go.mod h1:FRsXN1f5AsAjCGJKqEizvkpNtU+EGNCLh3NxZ/8L+MA=
-github.com/stretchr/testify v1.3.0/go.mod h1:M5WIy9Dh21IEIfnGCwXGc5bZfKNJtfHm1UVUgZn+9EI=
 github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81PSLYec5m4=
-github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.7.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
-github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
+github.com/stretchr/testify v1.8.0/go.mod h1:yNjHg4UonilssWZ8iaSj1OCr/vHnekPRkoO+kdMU+MU=
-github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
+github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
+github.com/stretchr/testify v1.9.0/go.mod h1:r2ic/lqez/lEtzL7wO/rwa5dbSLXVDPFyf8C91i36aY=
+github.com/stretchr/testify v1.11.1 h1:7s2iGBzp5EwR7/aIZr8ao5+dra3wiQyKjjFuvgVKu7U=
+github.com/stretchr/testify v1.11.1/go.mod h1:wZwfW3scLgRK+23gO65QZefKpKQRnfz6sD981Nm4B6U=
+github.com/things-go/go-socks5 v0.1.0 h1:4f5dz0iMQ6cA4wseFmyLmCHmg3SWJTW92ndrKS6oERg=
+github.com/things-go/go-socks5 v0.1.0/go.mod h1:Riabiyu52kLsla0YmJqunt1c1JEl6iXSr4bRd7swFEA=
 github.com/txthinking/runnergroup v0.0.0-20210608031112-152c7c4432bf/go.mod h1:CLUSJbazqETbaR+i0YAhXBICV9TrKH93pziccMhmhpM=
-github.com/txthinking/runnergroup v0.0.0-20220212043759-8da8edb7dae8 h1:iYc+JnXtzv6sdMx9Q7OTKkDAn7FhDPDogcjeSfEQcLY=
+github.com/txthinking/runnergroup v0.0.0-20250224021307-5864ffeb65ae h1:ArVM1jICfm7g4E4dBet+KHUFMLuxmj1Nxdp/tr3ByCU=
-github.com/txthinking/runnergroup v0.0.0-20220212043759-8da8edb7dae8/go.mod h1:CLUSJbazqETbaR+i0YAhXBICV9TrKH93pziccMhmhpM=
+github.com/txthinking/runnergroup v0.0.0-20250224021307-5864ffeb65ae/go.mod h1:cldYm15/XHcGt7ndItnEWHwFZo7dinU+2QoyjfErhsI=
-github.com/txthinking/socks5 v0.0.0-20220212043548-414499347d4a h1:BOqgJ4jku0LHPDoR51RD8Mxmo0LHxCzJT/M9MemYdHo=
+github.com/txthinking/socks5 v0.0.0-20251011041537-5c31f201a10e h1:xA7GVlbz6teIF4FdvuqwbX6C4tiqNk2PH7FRPIDerao=
-github.com/txthinking/socks5 v0.0.0-20220212043548-414499347d4a/go.mod h1:7NloQcrxaZYKURWph5HLxVDlIwMHJXCPkeWPtpftsIg=
+github.com/txthinking/socks5 v0.0.0-20251011041537-5c31f201a10e/go.mod h1:ntmMHL/xPq1WLeKiw8p/eRATaae6PiVRNipHFJxI8PM=
-github.com/txthinking/x v0.0.0-20210326105829-476fab902fbe h1:gMWxZxBFRAXqoGkwkYlPX2zvyyKNWJpxOxCrjqJkm5A=
+github.com/tylertreat/BoomFilters v0.0.0-20251117164519-53813c36cc1b h1:p+bJ3v5uUdEVMCoeFUs+BNJPsqt+Y6BLbDaPfTcbcH8=
-github.com/txthinking/x v0.0.0-20210326105829-476fab902fbe/go.mod h1:WgqbSEmUYSjEV3B1qmee/PpP2NYEz4bL9/+mF1ma+s4=
+github.com/tylertreat/BoomFilters v0.0.0-20251117164519-53813c36cc1b/go.mod h1:OYRfF6eb5wY9VRFkXJH8FFBi3plw2v+giaIu7P054pM=
-github.com/tylertreat/BoomFilters v0.0.0-20210315201527-1a82519a3e43 h1:QEePdg0ty2r0t1+qwfZmQ4OOl/MB2UXIeJSpIZv56lg=
-github.com/tylertreat/BoomFilters v0.0.0-20210315201527-1a82519a3e43/go.mod h1:OYRfF6eb5wY9VRFkXJH8FFBi3plw2v+giaIu7P054pM=
 github.com/yl2chen/cidranger v1.0.2 h1:lbOWZVCG1tCRX4u24kuM1Tb4nHqWkDxwLdoS+SevawU=
 github.com/yl2chen/cidranger v1.0.2/go.mod h1:9U1yz7WPYDwf0vpNWFaeRh0bjwz5RVgRy/9UEQfHl0g=
-github.com/yuin/goldmark v1.1.25/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
+github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
-github.com/yuin/goldmark v1.1.27/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
+go.uber.org/goleak v1.3.0 h1:2K3zAYmnTNqV73imy9J1T3WC+gmCePx2hEGkimedGto=
-github.com/yuin/goldmark v1.1.32/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
+go.uber.org/goleak v1.3.0/go.mod h1:CoHD4mav9JJNrW/WLlf7HGZPjdw8EucARQHekz1X6bE=
-github.com/yuin/goldmark v1.4.0/go.mod h1:mwnBkeHKe2W/ZEtQ+71ViKU8L12m81fl3OWwC1Zlc8k=
+go.yaml.in/yaml/v2 v2.4.3 h1:6gvOSjQoTB3vt1l+CU+tSyi/HOjfOjRLJ4YwYZGwRO0=
-go.opencensus.io v0.21.0/go.mod h1:mSImk1erAIZhrmZN+AvHh14ztQfjbGwt4TtuofqLduU=
+go.yaml.in/yaml/v2 v2.4.3/go.mod h1:zSxWcmIDjOzPXpjlTTbAsKokqkDNAVtZO0WOMiT90s8=
-go.opencensus.io v0.22.0/go.mod h1:+kGneAE2xo2IficOXnaByMWTGM9T73dGwxeWcUqIpI8=
-go.opencensus.io v0.22.2/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
-go.opencensus.io v0.22.3/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
-go.opencensus.io v0.22.4/go.mod h1:yxeiOL68Rb0Xd1ddK5vPZ/oVn4vY4Ynel7k9FzqtOIw=
-go.uber.org/atomic v1.6.0/go.mod h1:sABNBOSYdrvTF6hTgEIbc7YasKWGhgEQZyfxyTvoXHQ=
-go.uber.org/atomic v1.7.0 h1:ADUqmZGgLDDfbSL9ZmPxKTybcoEYHgpYfELNoN+7hsw=
-go.uber.org/atomic v1.7.0/go.mod h1:fEN4uk6kAWBTFdckzkM89CLk9XfWZrxpCo0nPH17wJc=
-go.uber.org/multierr v1.5.0/go.mod h1:FeouvMocqHpRaaGuG9EjoKcStLC43Zu/fmqdUMPcKYU=
-go.uber.org/multierr v1.6.0 h1:y6IPFStTAIT5Ytl7/XYmHvzXQ7S3g/IeZW9hyZ5thw4=
-go.uber.org/multierr v1.6.0/go.mod h1:cdWPpRnG4AhwMwsgIHip0KRBQjJy5kYEpYjJxpXp9iU=
-go.uber.org/ratelimit v0.2.0/go.mod h1:YYBV4e4naJvhpitQrWJu1vCpgB7CboMe0qhltKt6mUg=
-go.uber.org/tools v0.0.0-20190618225709-2cfd321de3ee/go.mod h1:vJERXedbb3MVM5f9Ejo0C68/HhF8uaILCdgjnY+goOA=
-go.uber.org/zap v1.16.0 h1:uFRZXykJGK9lLY4HtgSw44DnIcAM+kRBP7x5m+NpAOM=
-go.uber.org/zap v1.16.0/go.mod h1:MA8QOfq0BHJwdXa996Y4dYkAqRKB8/1K1QMMZVaNZjQ=
-golang.org/x/crypto v0.0.0-20180904163835-0709b304e793/go.mod h1:6SG95UA2DQfeDnfUPMdvaQW0Q7yPrPDi9nlGo2tz2b4=
 golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-golang.org/x/crypto v0.0.0-20190510104115-cbcb75029529/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
+golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
-golang.org/x/crypto v0.0.0-20190605123033-f99c8df09eb5/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
+golang.org/x/crypto v0.48.0 h1:/VRzVqiRSggnhY7gNRxPauEQ5Drw9haKdM0jqfcCFts=
-golang.org/x/crypto v0.0.0-20191011191535-87dc89f01550/go.mod h1:yigFU9vqHzYiE8UmvKecakEJjdnWj3jj499lnFckfCI=
+golang.org/x/crypto v0.48.0/go.mod h1:r0kV5h3qnFPlQnBSrULhlsRfryS2pmewsg+XfMgkVos=
-golang.org/x/crypto v0.0.0-20200622213623-75b288015ac9/go.mod h1:LzIPMQfyMNhhGPhUkYOs5KpL4U8rLKemX1yGLhDgUto=
+golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
-golang.org/x/crypto v0.0.0-20211215165025-cf75a172585e/go.mod h1:P+XmwS30IXTQdn5tA2iutPOUgjI07+tq3H3K9MVA1s8=
+golang.org/x/mod v0.7.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
-golang.org/x/crypto v0.0.0-20220315160706-3147a52a75dd h1:XcWmESyNjXJMLahc3mqVQJcgSTDxFxhETVlfk9uGc38=
+golang.org/x/mod v0.32.0 h1:9F4d3PHLljb6x//jOyokMv3eX+YDeepZSEo3mFJy93c=
-golang.org/x/crypto v0.0.0-20220315160706-3147a52a75dd/go.mod h1:IxCIyHEi3zRg3s0A5j5BB6A9Jmi73HwBIUl50j+osU4=
+golang.org/x/mod v0.32.0/go.mod h1:SgipZ/3h2Ci89DlEtEXWUk/HteuRin+HHhN+WbNhguU=
-golang.org/x/exp v0.0.0-20190121172915-509febef88a4/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
-golang.org/x/exp v0.0.0-20190306152737-a1d7652674e8/go.mod h1:CJ0aWSM057203Lf6IL+f9T1iT9GByDxfZKAQTCR3kQA=
-golang.org/x/exp v0.0.0-20190510132918-efd6b22b2522/go.mod h1:ZjyILWgesfNpC6sMxTJOJm9Kp84zZh5NQWvqDGG3Qr8=
-golang.org/x/exp v0.0.0-20190829153037-c13cbed26979/go.mod h1:86+5VVa7VpoJ4kLfm080zCjGlMRFzhUhsZKEZO7MGek=
-golang.org/x/exp v0.0.0-20191030013958-a1ab85dbe136/go.mod h1:JXzH8nQsPlswgeRAPE3MuO9GYsAcnJvJ4vnMwN/5qkY=
-golang.org/x/exp v0.0.0-20191129062945-2f5052295587/go.mod h1:2RIsYlXP63K8oxa1u096TMicItID8zy7Y6sNkU49FU4=
-golang.org/x/exp v0.0.0-20191227195350-da58074b4299/go.mod h1:2RIsYlXP63K8oxa1u096TMicItID8zy7Y6sNkU49FU4=
-golang.org/x/exp v0.0.0-20200119233911-0405dc783f0a/go.mod h1:2RIsYlXP63K8oxa1u096TMicItID8zy7Y6sNkU49FU4=
-golang.org/x/exp v0.0.0-20200207192155-f17229e696bd/go.mod h1:J/WKrq2StrnmMY6+EHIKF9dgMWnmCNThgcyBT1FY9mM=
-golang.org/x/exp v0.0.0-20200224162631-6cc2880d07d6/go.mod h1:3jZMyOhIsHpP37uCMkUooju7aAi5cS1Q23tOzKc+0MU=
-golang.org/x/image v0.0.0-20190227222117-0694c2d4d067/go.mod h1:kZ7UVZpmo3dzQBMxlp+ypCbDeSB+sBbTgSJuh5dn5js=
-golang.org/x/image v0.0.0-20190802002840-cff245a6509b/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
-golang.org/x/lint v0.0.0-20181026193005-c67002cb31c3/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
-golang.org/x/lint v0.0.0-20190227174305-5b3e6a55c961/go.mod h1:wehouNa3lNwaWXcvxsM5YxQ5yQlVC4a0KAMCusXpPoU=
-golang.org/x/lint v0.0.0-20190301231843-5614ed5bae6f/go.mod h1:UVdnD1Gm6xHRNCYTkRU2/jEulfH38KcIWyp/GAMgvoE=
-golang.org/x/lint v0.0.0-20190313153728-d0100b6bd8b3/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
-golang.org/x/lint v0.0.0-20190409202823-959b441ac422/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
-golang.org/x/lint v0.0.0-20190909230951-414d861bb4ac/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
-golang.org/x/lint v0.0.0-20190930215403-16217165b5de/go.mod h1:6SW0HCj/g11FgYtHlgUYUwCkIfeOF89ocIRzGO/8vkc=
-golang.org/x/lint v0.0.0-20191125180803-fdd1cda4f05f/go.mod h1:5qLYkcX4OjUUV8bRuDixDT3tpyyb+LUpUlRWLxfhWrs=
-golang.org/x/lint v0.0.0-20200130185559-910be7a94367/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
-golang.org/x/lint v0.0.0-20200302205851-738671d3881b h1:Wh+f8QHJXR411sJR8/vRBTZ7YapZaRvUcLFFJhusH0k=
-golang.org/x/lint v0.0.0-20200302205851-738671d3881b/go.mod h1:3xt1FjdF8hUf6vQPIChWIBhFzV8gjjsPE/fR3IyQdNY=
-golang.org/x/mobile v0.0.0-20190312151609-d3739f865fa6/go.mod h1:z+o9i4GpDbdi3rU15maQ/Ox0txvL9dWGYEHz965HBQE=
-golang.org/x/mobile v0.0.0-20190719004257-d2bd2a29d028/go.mod h1:E/iHnbuqvinMTCcRqshq8CkpyQDoeVncDDYHnLhea+o=
-golang.org/x/mod v0.0.0-20190513183733-4bf6d317e70e/go.mod h1:mXi4GBBbnImb6dmsKGUJ2LatrhH/nqhxcFungHvyanc=
-golang.org/x/mod v0.1.0/go.mod h1:0QHyrYULN0/3qlju5TqG8bIK38QM8yzMo5ekMj3DlcY=
-golang.org/x/mod v0.1.1-0.20191105210325-c90efee705ee/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
-golang.org/x/mod v0.1.1-0.20191107180719-034126e5016b/go.mod h1:QqPTAvyqsEbceGzBzNggFXnrqF1CaUcvgkdR5Ot7KZg=
-golang.org/x/mod v0.2.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
-golang.org/x/mod v0.3.0/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
-golang.org/x/mod v0.4.2 h1:Gz96sIWK3OalVv/I/qNygP42zyoKp3xptRVCWRFEBvo=
-golang.org/x/mod v0.4.2/go.mod h1:s0Qsj1ACt9ePp/hMypM3fl4fZqREWJwdYDEqhRiZZUA=
-golang.org/x/net v0.0.0-20180218175443-cbe0f9307d01/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/net v0.0.0-20180724234803-3673e40ba225/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/net v0.0.0-20180826012351-8a410e7b638d/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/net v0.0.0-20181114220301-adae6a3d119a/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/net v0.0.0-20190108225652-1e06a53dbb7e/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/net v0.0.0-20190213061140-3a22650c66bd/go.mod h1:mL1N/T3taQHkDXs73rZJwtUhF3w3ftmwwsq0BUmARs4=
-golang.org/x/net v0.0.0-20190311183353-d8887717615a/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
-golang.org/x/net v0.0.0-20190404232315-eb5bcb51f2a3/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
-golang.org/x/net v0.0.0-20190501004415-9ce7a6920f09/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
-golang.org/x/net v0.0.0-20190503192946-f4e77d36d62c/go.mod h1:t9HGtf8HONx5eT2rtn7q6eTqICYqUVnKs3thJo3Qplg=
-golang.org/x/net v0.0.0-20190603091049-60506f45cf65/go.mod h1:HSz+uSET+XFnRR8LxR5pz3Of3rY3CfYBVs4xY44aLks=
-golang.org/x/net v0.0.0-20190613194153-d28f0bde5980/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
 golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20190628185345-da137c7871d7/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20190724013045-ca1201d0de80/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20191209160850-c0dbc17a3553/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20200114155413-6afb5195e5aa/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20200202094626-16171245cfb2/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20200222125558-5a598a2470a0/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20200226121028-0de0cce0169b/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20200301022130-244492dfa37a/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20200324143707-d3edc9973b7e/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
-golang.org/x/net v0.0.0-20200501053045-e0ff5e5a1de5/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
-golang.org/x/net v0.0.0-20200506145744-7e3656a0809f/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
-golang.org/x/net v0.0.0-20200513185701-a91f0712d120/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
-golang.org/x/net v0.0.0-20200520182314-0ba52f642ac2/go.mod h1:qpuaurCH72eLCgpAm/N6yyVIVM9cpaDIP3A8BGJEC5A=
-golang.org/x/net v0.0.0-20200625001655-4c5254603344/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
-golang.org/x/net v0.0.0-20200707034311-ab3426394381/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
-golang.org/x/net v0.0.0-20200822124328-c89045814202/go.mod h1:/O7V0waA8r7cgGh81Ro3o1hOxt32SMVPicZroKQ2sZA=
-golang.org/x/net v0.0.0-20201021035429-f5854403a974/go.mod h1:sp8m0HH+o8qH0wwXwYZr8TS3Oi6o0r6Gce1SSxlDquU=
 golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
-golang.org/x/net v0.0.0-20210525063256-abc453219eb5/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
-golang.org/x/net v0.0.0-20210805182204-aaa1db679c0d/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/net v0.2.0/go.mod h1:KqCZLdyyvdV855qA2rE3GC2aiw5xGR5TEjj8smXukLY=
-golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2 h1:CIJ76btIcR3eFI5EgSo6k1qKw9KJexJuRLI9G7Hp5wE=
+golang.org/x/net v0.51.0 h1:94R/GTO7mt3/4wIKpcR5gkGmRLOuE/2hNGeWq/GBIFo=
-golang.org/x/net v0.0.0-20211112202133-69e39bad7dc2/go.mod h1:9nx3DQGgdP8bBQD5qxJ1jj9UTztislL4KSBs9R2vV5Y=
+golang.org/x/net v0.51.0/go.mod h1:aamm+2QF5ogm02fjy5Bb7CQ0WMt1/WVM7FtyaTLlA9Y=
-golang.org/x/oauth2 v0.0.0-20180821212333-d2e6202438be/go.mod h1:N/0e6XlmueqKjAGxoOufVs8QHGRruUQn6yWY3a++T0U=
-golang.org/x/oauth2 v0.0.0-20190226205417-e64efc72b421/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
-golang.org/x/oauth2 v0.0.0-20190604053449-0f29369cfe45/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
-golang.org/x/oauth2 v0.0.0-20191202225959-858c2ad4c8b6/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
-golang.org/x/oauth2 v0.0.0-20200107190931-bf48bf16ab8d/go.mod h1:gOpvHmFTYa4IltrdGE7lF6nIHvwfUNPOp7c8zoXwtLw=
-golang.org/x/oauth2 v0.0.0-20210514164344-f6687ab2804c/go.mod h1:KelEdhl1UZF7XfJ4dDtk6s++YSgaE7mD/BuKKDLBl4A=
-golang.org/x/sync v0.0.0-20180314180146-1d60e4601c6f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20181108010431-42b317875d0f/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20181221193216-37e7f081c4d4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20190227155943-e225da77a7e6/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
 golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20190911185100-cd5d95a43a6e/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20200317015054-43a5402ce75a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20200625203802-6e8e738ad208/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.19.0 h1:vV+1eWNmZ5geRlYjzm2adRgW2/mcpevXNg50YZtPCE4=
-golang.org/x/sync v0.0.0-20201207232520-09787c993a3a/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
+golang.org/x/sync v0.19.0/go.mod h1:9KTHXmSnoGruLpwFjVSX0lNNA75CykiMECbovNTZqGI=
-golang.org/x/sync v0.0.0-20210220032951-036812b2e83c h1:5KslGYwFpkhGh+Q16bwMP3cOontH8FOep7tGV86Y7SQ=
-golang.org/x/sync v0.0.0-20210220032951-036812b2e83c/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sys v0.0.0-20180830151530-49385e6e1522/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20180905080454-ebe1bf3edb33/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20181116152217-5ac8a444bdc5/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
 golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20190222072716-a9d3bda3a223/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20190312061237-fead79001313/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20190412213103-97732733099d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20190422165155-953cdadca894/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20190502145724-3ef323f4f1fd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20190507160741-ecd444e8653b/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20190606165138-5da285871e9c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20190624142023-c5567b49c5d0/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20190726091711-fc99dfbffb4e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20190813064441-fde4db37ae7a/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20191001151750-bb3f8db39f24/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20191204072324-ce4227a45e2e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20191228213918-04cbcbbfeed8/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200106162015-b016eb3dc98e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200113162924-86b910548bc1/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200122134326-e047566fdf82/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200202164722-d101bd2416d5/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200212091648-12a6c2dcc1e4/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200223170610-d5e6a3e2c0ae/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200302150141-5c8b2ff67527/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200323222414-85ca7c5b95cd/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200331124033-c3d80250170d/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200501052902-10377860bb8e/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200511232937-7e40ca221e25/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200515095857-1151b9dac4a9/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200523222454-059865788121/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200615200032-f1bc736245b1/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200625212154-ddb9806d33ae/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200803210538-64077c9b5642/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20200930185726-fdedc70b468f/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
 golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20210124154548-22da62e12c0c/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20210423082822-04245dca01da/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
+golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20210603081109-ebe580a85c40/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20210809222454-d867a43fc93e/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20220114195835-da31bd327af9/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.2.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20220319134239-a9b59b0215f8 h1:OH54vjqzRWmbJ62fjuhxy7AxFFgoHN0/DPc/UrL8cAs=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20220319134239-a9b59b0215f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.41.0 h1:Ivj+2Cp/ylzLiEU89QhWblYnOE9zerudt9Ftecq2C6k=
+golang.org/x/sys v0.41.0/go.mod h1:OgkHotnGiDImocRcuBABYBEXf8A9a87e/uXjp9XT3ks=
 golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
-golang.org/x/text v0.0.0-20170915032832-14c0d48ead0c/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
+golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
+golang.org/x/term v0.2.0/go.mod h1:TVmDHMZPmdnySmBfhjOoOdhjzdE1h4u1VwSiw2l1Nuc=
 golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/text v0.3.1-0.20180807135948-17ff2d5776d2/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
 golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
+golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
-golang.org/x/time v0.0.0-20181108054448-85acf8d2951c/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
+golang.org/x/text v0.4.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
-golang.org/x/time v0.0.0-20190308202827-9d24e82272b4/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
-golang.org/x/time v0.0.0-20191024005414-555d28b269f0/go.mod h1:tRJNPiyCQ0inRvYxbN9jk5I+vvW/OXSQhTDSoE431IQ=
 golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
-golang.org/x/tools v0.0.0-20190114222345-bf090417da8b/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
-golang.org/x/tools v0.0.0-20190226205152-f727befe758c/go.mod h1:9Yl7xja0Znq3iFh3HoIrodX9oNMXvdceNzlUR8zjMvY=
-golang.org/x/tools v0.0.0-20190311212946-11955173bddd/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
-golang.org/x/tools v0.0.0-20190312151545-0bb0c0a6e846/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
-golang.org/x/tools v0.0.0-20190312170243-e65039ee4138/go.mod h1:LCzVGOaR6xXOjkQ3onu1FJEFr0SW1gC7cKk1uF8kGRs=
-golang.org/x/tools v0.0.0-20190425150028-36563e24a262/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
-golang.org/x/tools v0.0.0-20190506145303-2d16b83fe98c/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
-golang.org/x/tools v0.0.0-20190524140312-2c0ae7006135/go.mod h1:RgjU9mgBXZiqYHBnxXauZ1Gv1EHHAz9KjViQ78xBX0Q=
-golang.org/x/tools v0.0.0-20190606124116-d0a3d012864b/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
-golang.org/x/tools v0.0.0-20190621195816-6e04913cbbac/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
-golang.org/x/tools v0.0.0-20190628153133-6cdbf07be9d0/go.mod h1:/rFqwRUd4F7ZHNgwSSTFct+R/Kf4OFW1sUzUTQQTgfc=
-golang.org/x/tools v0.0.0-20190816200558-6889da9d5479/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
-golang.org/x/tools v0.0.0-20190911174233-4f2ddba30aff/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
-golang.org/x/tools v0.0.0-20191012152004-8de300cfc20a/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
-golang.org/x/tools v0.0.0-20191029041327-9cc4af7d6b2c/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
-golang.org/x/tools v0.0.0-20191029190741-b9c20aec41a5/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
-golang.org/x/tools v0.0.0-20191113191852-77e3bb0ad9e7/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
-golang.org/x/tools v0.0.0-20191115202509-3a792d9c32b2/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
 golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
-golang.org/x/tools v0.0.0-20191125144606-a911d9008d1f/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
-golang.org/x/tools v0.0.0-20191130070609-6e064ea0cf2d/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
+golang.org/x/tools v0.3.0/go.mod h1:/rWhSS2+zyEVwoJf8YAX6L2f0ntZ7Kn/mGgAWcipA5k=
-golang.org/x/tools v0.0.0-20191216173652-a0e659d51361/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
+golang.org/x/tools v0.41.0 h1:a9b8iMweWG+S0OBnlU36rzLp20z1Rp10w+IY2czHTQc=
-golang.org/x/tools v0.0.0-20191227053925-7b8e75db28f4/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
+golang.org/x/tools v0.41.0/go.mod h1:XSY6eDqxVNiYgezAVqqCeihT4j1U2CCsqvH3WhQpnlg=
-golang.org/x/tools v0.0.0-20200117161641-43d50277825c/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
-golang.org/x/tools v0.0.0-20200122220014-bf1340f18c4a/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
-golang.org/x/tools v0.0.0-20200130002326-2f3ba24bd6e7/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
-golang.org/x/tools v0.0.0-20200204074204-1cc6d1ef6c74/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
-golang.org/x/tools v0.0.0-20200207183749-b753a1ba74fa/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
-golang.org/x/tools v0.0.0-20200212150539-ea181f53ac56/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
-golang.org/x/tools v0.0.0-20200224181240-023911ca70b2/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
-golang.org/x/tools v0.0.0-20200227222343-706bc42d1f0d/go.mod h1:TB2adYChydJhpapKDTa4BR/hXlZSLoq2Wpct/0txZ28=
-golang.org/x/tools v0.0.0-20200304193943-95d2e580d8eb/go.mod h1:o4KQGtdN14AW+yjsvvwRTJJuXz8XRtIHtEnmAXLyFUw=
-golang.org/x/tools v0.0.0-20200312045724-11d5b4c81c7d/go.mod h1:o4KQGtdN14AW+yjsvvwRTJJuXz8XRtIHtEnmAXLyFUw=
-golang.org/x/tools v0.0.0-20200331025713-a30bf2db82d4/go.mod h1:Sl4aGygMT6LrqrWclx+PTx3U+LnKx/seiNR+3G19Ar8=
-golang.org/x/tools v0.0.0-20200501065659-ab2804fb9c9d/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
-golang.org/x/tools v0.0.0-20200512131952-2bc93b1c0c88/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
-golang.org/x/tools v0.0.0-20200515010526-7d3b6ebf133d/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
-golang.org/x/tools v0.0.0-20200618134242-20370b0cb4b2/go.mod h1:EkVYQZoAsY45+roYkvgYkIh4xh/qjgUK9TdY2XT94GE=
-golang.org/x/tools v0.0.0-20200729194436-6467de6f59a7/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
-golang.org/x/tools v0.0.0-20200804011535-6c149bb5ef0d/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
-golang.org/x/tools v0.0.0-20200820010801-b793a1359eac/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
-golang.org/x/tools v0.0.0-20200825202427-b303f430e36d/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
-golang.org/x/tools v0.1.7 h1:6j8CgantCy3yc8JGBqkDLMKWqZ0RDU2g1HVgacojGWQ=
-golang.org/x/tools v0.1.7/go.mod h1:LGqMHiF4EqQNHR1JncWGqT5BVaXmza+X+BDGol+dOxo=
 golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+google.golang.org/protobuf v1.36.11 h1:fV6ZwhNocDyBLK0dj+fg8ektcVegBBuEolpbTQyBNVE=
-golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+google.golang.org/protobuf v1.36.11/go.mod h1:HTf+CrKn2C3g5S8VImy6tdcUvCska2kB7j23XfzDpco=
-golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1 h1:go1bK/D/BFZV2I8cIQd1NKEZ+0owSTG1fDTci4IqFcE=
-golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
-google.golang.org/api v0.4.0/go.mod h1:8k5glujaEP+g9n7WNsDg8QP6cUVNI86fCNMcbazEtwE=
-google.golang.org/api v0.7.0/go.mod h1:WtwebWUNSVBH/HAw79HIFXZNqEvBhG+Ra+ax0hx3E3M=
-google.golang.org/api v0.8.0/go.mod h1:o4eAsZoiT+ibD93RtjEohWalFOjRDx6CVaqeizhEnKg=
-google.golang.org/api v0.9.0/go.mod h1:o4eAsZoiT+ibD93RtjEohWalFOjRDx6CVaqeizhEnKg=
-google.golang.org/api v0.13.0/go.mod h1:iLdEw5Ide6rF15KTC1Kkl0iskquN2gFfn9o9XIsbkAI=
-google.golang.org/api v0.14.0/go.mod h1:iLdEw5Ide6rF15KTC1Kkl0iskquN2gFfn9o9XIsbkAI=
-google.golang.org/api v0.15.0/go.mod h1:iLdEw5Ide6rF15KTC1Kkl0iskquN2gFfn9o9XIsbkAI=
-google.golang.org/api v0.17.0/go.mod h1:BwFmGc8tA3vsd7r/7kR8DY7iEEGSU04BFxCo5jP/sfE=
-google.golang.org/api v0.18.0/go.mod h1:BwFmGc8tA3vsd7r/7kR8DY7iEEGSU04BFxCo5jP/sfE=
-google.golang.org/api v0.19.0/go.mod h1:BwFmGc8tA3vsd7r/7kR8DY7iEEGSU04BFxCo5jP/sfE=
-google.golang.org/api v0.20.0/go.mod h1:BwFmGc8tA3vsd7r/7kR8DY7iEEGSU04BFxCo5jP/sfE=
-google.golang.org/api v0.22.0/go.mod h1:BwFmGc8tA3vsd7r/7kR8DY7iEEGSU04BFxCo5jP/sfE=
-google.golang.org/api v0.24.0/go.mod h1:lIXQywCXRcnZPGlsd8NbLnOjtAoL6em04bJ9+z0MncE=
-google.golang.org/api v0.28.0/go.mod h1:lIXQywCXRcnZPGlsd8NbLnOjtAoL6em04bJ9+z0MncE=
-google.golang.org/api v0.29.0/go.mod h1:Lcubydp8VUV7KeIHD9z2Bys/sm/vGKnG1UHuDBSrHWM=
-google.golang.org/api v0.30.0/go.mod h1:QGmEvQ87FHZNiUVJkT14jQNYJ4ZJjdRF23ZXz5138Fc=
-google.golang.org/appengine v1.1.0/go.mod h1:EbEs0AVv82hx2wNQdGPgUI5lhzA/G0D9YwlJXL52JkM=
-google.golang.org/appengine v1.4.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
-google.golang.org/appengine v1.5.0/go.mod h1:xpcJRLb0r/rnEns0DIKYYv+WjYCduHsrkT7/EB5XEv4=
-google.golang.org/appengine v1.6.1/go.mod h1:i06prIuMbXzDqacNJfV5OdTW448YApPu5ww/cMBSeb0=
-google.golang.org/appengine v1.6.5/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
-google.golang.org/appengine v1.6.6/go.mod h1:8WjMMxjGQR8xUklV/ARdw2HLXBOI7O7uCIDZVag1xfc=
-google.golang.org/genproto v0.0.0-20180817151627-c66870c02cf8/go.mod h1:JiN7NxoALGmiZfu7CAH4rXhgtRTLTxftemlI0sWmxmc=
-google.golang.org/genproto v0.0.0-20190307195333-5fe7a883aa19/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
-google.golang.org/genproto v0.0.0-20190418145605-e7d98fc518a7/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
-google.golang.org/genproto v0.0.0-20190425155659-357c62f0e4bb/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
-google.golang.org/genproto v0.0.0-20190502173448-54afdca5d873/go.mod h1:VzzqZJRnGkLBvHegQrXjBqPurQTc5/KpmUdxsrq26oE=
-google.golang.org/genproto v0.0.0-20190801165951-fa694d86fc64/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
-google.golang.org/genproto v0.0.0-20190819201941-24fa4b261c55/go.mod h1:DMBHOl98Agz4BDEuKkezgsaosCRResVns1a3J2ZsMNc=
-google.golang.org/genproto v0.0.0-20190911173649-1774047e7e51/go.mod h1:IbNlFCBrqXvoKpeg0TB2l7cyZUmoaFKYIwrEpbDKLA8=
-google.golang.org/genproto v0.0.0-20191108220845-16a3f7862a1a/go.mod h1:n3cpQtvxv34hfy77yVDNjmbRyujviMdxYliBSkLhpCc=
-google.golang.org/genproto v0.0.0-20191115194625-c23dd37a84c9/go.mod h1:n3cpQtvxv34hfy77yVDNjmbRyujviMdxYliBSkLhpCc=
-google.golang.org/genproto v0.0.0-20191216164720-4f79533eabd1/go.mod h1:n3cpQtvxv34hfy77yVDNjmbRyujviMdxYliBSkLhpCc=
-google.golang.org/genproto v0.0.0-20191230161307-f3c370f40bfb/go.mod h1:n3cpQtvxv34hfy77yVDNjmbRyujviMdxYliBSkLhpCc=
-google.golang.org/genproto v0.0.0-20200115191322-ca5a22157cba/go.mod h1:n3cpQtvxv34hfy77yVDNjmbRyujviMdxYliBSkLhpCc=
-google.golang.org/genproto v0.0.0-20200122232147-0452cf42e150/go.mod h1:n3cpQtvxv34hfy77yVDNjmbRyujviMdxYliBSkLhpCc=
-google.golang.org/genproto v0.0.0-20200204135345-fa8e72b47b90/go.mod h1:GmwEX6Z4W5gMy59cAlVYjN9JhxgbQH6Gn+gFDQe2lzA=
-google.golang.org/genproto v0.0.0-20200212174721-66ed5ce911ce/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
-google.golang.org/genproto v0.0.0-20200224152610-e50cd9704f63/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
-google.golang.org/genproto v0.0.0-20200228133532-8c2c7df3a383/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
-google.golang.org/genproto v0.0.0-20200305110556-506484158171/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
-google.golang.org/genproto v0.0.0-20200312145019-da6875a35672/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
-google.golang.org/genproto v0.0.0-20200331122359-1ee6d9798940/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
-google.golang.org/genproto v0.0.0-20200430143042-b979b6f78d84/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
-google.golang.org/genproto v0.0.0-20200511104702-f5ebc3bea380/go.mod h1:55QSHmfGQM9UVYDPBsyGGes0y52j32PQ3BqQfXhyH3c=
-google.golang.org/genproto v0.0.0-20200515170657-fc4c6c6a6587/go.mod h1:YsZOwe1myG/8QRHRsmBRE1LrgQY60beZKjly0O1fX9U=
-google.golang.org/genproto v0.0.0-20200526211855-cb27e3aa2013/go.mod h1:NbSheEEYHJ7i3ixzK3sjbqSGDJWnxyFXZblF3eUsNvo=
-google.golang.org/genproto v0.0.0-20200618031413-b414f8b61790/go.mod h1:jDfRM7FcilCzHH/e9qn6dsT145K34l5v+OpcnNgKAAA=
-google.golang.org/genproto v0.0.0-20200729003335-053ba62fc06f/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
-google.golang.org/genproto v0.0.0-20200804131852-c06518451d9c/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
-google.golang.org/genproto v0.0.0-20200825200019-8632dd797987/go.mod h1:FWY/as6DDZQgahTzZj3fqbO1CbirC29ZNUFHwi0/+no=
-google.golang.org/grpc v1.19.0/go.mod h1:mqu4LbDTu4XGKhr4mRzUsmM4RtVoemTSY81AxZiDr8c=
-google.golang.org/grpc v1.20.1/go.mod h1:10oTOabMzJvdu6/UiuZezV6QK5dSlG84ov/aaiqXj38=
-google.golang.org/grpc v1.21.1/go.mod h1:oYelfM1adQP15Ek0mdvEgi9Df8B9CZIaU1084ijfRaM=
-google.golang.org/grpc v1.23.0/go.mod h1:Y5yQAOtifL1yxbo5wqy6BxZv8vAUGQwXBOALyacEbxg=
-google.golang.org/grpc v1.25.1/go.mod h1:c3i+UQWmh7LiEpx4sFZnkU36qjEYZ0imhYfXVyQciAY=
-google.golang.org/grpc v1.26.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
-google.golang.org/grpc v1.27.0/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
-google.golang.org/grpc v1.27.1/go.mod h1:qbnxyOmOxrQa7FizSgH+ReBfzJrCY1pSN7KXBS8abTk=
-google.golang.org/grpc v1.28.0/go.mod h1:rpkK4SK4GF4Ach/+MFLZUBavHOvF2JJB5uozKKal+60=
-google.golang.org/grpc v1.29.1/go.mod h1:itym6AZVZYACWQqET3MqgPpjcuV5QH3BxFS3IjizoKk=
-google.golang.org/grpc v1.30.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
-google.golang.org/grpc v1.31.0/go.mod h1:N36X2cJ7JwdamYAgDz+s+rVMFjt3numwzf/HckM8pak=
-google.golang.org/protobuf v0.0.0-20200109180630-ec00e32a8dfd/go.mod h1:DFci5gLYBciE7Vtevhsrf46CRTquxDuWsQurQQe4oz8=
-google.golang.org/protobuf v0.0.0-20200221191635-4d8936d0db64/go.mod h1:kwYJMbMJ01Woi6D6+Kah6886xMZcty6N08ah7+eCXa0=
-google.golang.org/protobuf v0.0.0-20200228230310-ab0ca4ff8a60/go.mod h1:cfTl7dwQJ+fmap5saPgwCLgHXTUD7jkjRqWcaiX5VyM=
-google.golang.org/protobuf v1.20.1-0.20200309200217-e05f789c0967/go.mod h1:A+miEFZTKqfCUM6K7xSMQL9OKL/b6hQv+e19PK+JZNE=
-google.golang.org/protobuf v1.21.0/go.mod h1:47Nbq4nVaFHyn7ilMalzfO3qCViNmqZ2kzikPIcrTAo=
-google.golang.org/protobuf v1.22.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
-google.golang.org/protobuf v1.23.0/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
-google.golang.org/protobuf v1.23.1-0.20200526195155-81db48ad09cc/go.mod h1:EGpADcykh3NcUnDUJcl1+ZksZNG86OlYog2l/sGQquU=
-google.golang.org/protobuf v1.24.0/go.mod h1:r/3tXBNzIEhYS9I1OUVjXDlt8tc493IdKGjtUeSXeh4=
-google.golang.org/protobuf v1.25.0/go.mod h1:9JNX74DMeImyA3h4bdi1ymwjUzf21/xIlbajtzgsN7c=
-google.golang.org/protobuf v1.26.0-rc.1/go.mod h1:jlhhOSvTdKEhbULTjvd4ARK9grFBp09yW+WbY/TyQbw=
-google.golang.org/protobuf v1.26.0/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
-google.golang.org/protobuf v1.27.1 h1:SnqbnDw1V7RiZcXPx5MEeqPv2s79L9i7BJUlG/+RurQ=
-google.golang.org/protobuf v1.27.1/go.mod h1:9q0QmTI4eRPtz6boOQmLYwt+qCgq0jsYwAQnmE0givc=
-gopkg.in/alecthomas/kingpin.v2 v2.2.6/go.mod h1:FMv+mEhP44yOT+4EoQTLFTRgOQ1FBLkstjWtayDeSgw=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/check.v1 v1.0.0-20180628173108-788fd7840127/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
-gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15 h1:YR8cESwS4TdDjEe65xsg0ogRM/Nc3DYOhEAlW+xobZo=
+gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
-gopkg.in/check.v1 v1.0.0-20190902080502-41f04d3bba15/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
-gopkg.in/errgo.v2 v2.1.0/go.mod h1:hNsd1EY+bozCKY1Ytp96fpM3vjJbqLJn88ws8XvfDNI=
-gopkg.in/yaml.v2 v2.2.1/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
 gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.2.4/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.2.5/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.2.7/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.3.0/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
-gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
-gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
 gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b h1:h8qDotaEPuJATrMmW04NCwg7v22aHH28wwpauUhK9Oo=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
-gopkg.in/yaml.v3 v3.0.0-20210107192922-496545a6307b/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
-honnef.co/go/tools v0.0.0-20190102054323-c2f93a96b099/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
-honnef.co/go/tools v0.0.0-20190106161140-3f1c8253044a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
-honnef.co/go/tools v0.0.0-20190418001031-e561f6794a2a/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
-honnef.co/go/tools v0.0.0-20190523083050-ea95bdfd59fc/go.mod h1:rf3lG4BRIbNafJWhAfAdb/ePZxsR/4RtNHQocxwk9r4=
-honnef.co/go/tools v0.0.1-2019.2.3/go.mod h1:a3bituU0lyd329TUQxRnasdCoJDkEUEAqEt0JzvZhAg=
-honnef.co/go/tools v0.0.1-2020.1.3/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
-honnef.co/go/tools v0.0.1-2020.1.4 h1:UoveltGrhghAA7ePc+e+QYDHXrBps2PqFZiHkGR/xK8=
-honnef.co/go/tools v0.0.1-2020.1.4/go.mod h1:X/FiERA/W4tHapMX5mGpAtMSVEeEUOyHaw9vFzvIQ3k=
-rsc.io/binaryregexp v0.2.0/go.mod h1:qTv7/COck+e2FymRvadv62gMdZztPaShugOCi3I+8D8=
-rsc.io/quote/v3 v3.1.0/go.mod h1:yEA65RcK8LyAZtP9Kv3t0HmxON59tX3rD+tICJqUlj0=
-rsc.io/sampler v1.3.0/go.mod h1:T1hPZKmBbMNahiBKFy5HrXp6adAjACjK9JXDnKaTXpA=

internal/cli/access.go

@@ -31,17 +31,17 @@ type accessResponse struct {
 type accessResponseURLs struct {
 	IP        net.IP `json:"ip"`
 	Port      uint   `json:"port"`
-	TgURL     string `json:"tg_url"`     // nolint: tagliatelle
+	TgURL     string `json:"tg_url"`     //nolint: tagliatelle
-	TgQrCode  string `json:"tg_qrcode"`  // nolint: tagliatelle
+	TgQrCode  string `json:"tg_qrcode"`  //nolint: tagliatelle
-	TmeURL    string `json:"tme_url"`    // nolint: tagliatelle
+	TmeURL    string `json:"tme_url"`    //nolint: tagliatelle
-	TmeQrCode string `json:"tme_qrcode"` // nolint: tagliatelle
+	TmeQrCode string `json:"tme_qrcode"` //nolint: tagliatelle
 }
 
 type Access struct {
-	ConfigPath string `kong:"arg,required,type='existingfile',help='Path to the configuration file.',name='config-path'"`                 // nolint: lll
+	ConfigPath string `kong:"arg,required,type='existingfile',help='Path to the configuration file.',name='config-path'"`                 //nolint: lll
-	PublicIPv4 net.IP `kong:"help='Public IPv4 address for proxy. By default it is resolved via remote website',name='ipv4',short='i'"`   // nolint: lll
+	PublicIPv4 net.IP `kong:"help='Public IPv4 address for proxy. By default it is resolved via remote website',name='ipv4',short='i'"`   //nolint: lll
-	PublicIPv6 net.IP `kong:"help='Public IPv6 address for proxy. By default it is resolved via remote website',name='ipv6',short='I'"`   // nolint: lll
+	PublicIPv6 net.IP `kong:"help='Public IPv6 address for proxy. By default it is resolved via remote website',name='ipv6',short='I'"`   //nolint: lll
-	Port       uint   `kong:"help='Port number. Default port is taken from configuration file, bind-to parameter',type:'uint',short='p'"` // nolint: lll
+	Port       uint   `kong:"help='Port number. Default port is taken from configuration file, bind-to parameter',type:'uint',short='p'"` //nolint: lll
 	Hex        bool   `kong:"help='Print secret in hex encoding.',short='x'"`
 }
 
@@ -61,11 +61,8 @@ func (a *Access) Run(cli *CLI, version string) error {
 	}
 
 	wg := &sync.WaitGroup{}
-	wg.Add(2) // nolint: gomnd
-
-	go func() {
-		defer wg.Done()
 
+	wg.Go(func() {
 		ip := a.PublicIPv4
 		if ip == nil {
 			ip = a.getIP(ntw, "tcp4")
@@ -76,11 +73,8 @@ func (a *Access) Run(cli *CLI, version string) error {
 		}
 
 		resp.IPv4 = a.makeURLs(conf, ip)
-	}()
+	})
-
+	wg.Go(func() {
-	go func() {
-		defer wg.Done()
-
 		ip := a.PublicIPv6
 		if ip == nil {
 			ip = a.getIP(ntw, "tcp6")
@@ -91,7 +85,7 @@ func (a *Access) Run(cli *CLI, version string) error {
 		}
 
 		resp.IPv6 = a.makeURLs(conf, ip)
-	}()
+	})
 
 	wg.Wait()
 
@@ -108,10 +102,10 @@ func (a *Access) Run(cli *CLI, version string) error {
 
 func (a *Access) getIP(ntw mtglib.Network, protocol string) net.IP {
 	client := ntw.MakeHTTPClient(func(ctx context.Context, network, address string) (essentials.Conn, error) {
-		return ntw.DialContext(ctx, protocol, address) // nolint: wrapcheck
+		return ntw.DialContext(ctx, protocol, address) //nolint: wrapcheck
 	})
 
-	req, err := http.NewRequest(http.MethodGet, "https://ifconfig.co", nil) // nolint: noctx
+	req, err := http.NewRequest(http.MethodGet, "https://ifconfig.co", nil) //nolint: noctx
 	if err != nil {
 		panic(err)
 	}
@@ -128,8 +122,8 @@ func (a *Access) getIP(ntw mtglib.Network, protocol string) net.IP {
 	}
 
 	defer func() {
-		io.Copy(io.Discard, resp.Body) // nolint: errcheck
+		io.Copy(io.Discard, resp.Body) //nolint: errcheck
-		resp.Body.Close()
+		resp.Body.Close()              //nolint: errcheck
 	}()
 
 	data, err := io.ReadAll(resp.Body)

internal/cli/generate_secret.go

@@ -15,9 +15,9 @@ func (g *GenerateSecret) Run(cli *CLI, _ string) error {
 	secret := mtglib.GenerateSecret(cli.GenerateSecret.HostName)
 
 	if g.Hex {
-		fmt.Println(secret.Hex()) // nolint: forbidigo
+		fmt.Println(secret.Hex()) //nolint: forbidigo
 	} else {
-		fmt.Println(secret.Base64()) // nolint: forbidigo
+		fmt.Println(secret.Base64()) //nolint: forbidigo
 	}
 
 	return nil

internal/cli/run.go

@@ -7,7 +7,7 @@ import (
 )
 
 type Run struct {
-	ConfigPath string `kong:"arg,required,type='existingfile',help='Path to the configuration file.',name='config-path'"` // nolint: lll
+	ConfigPath string `kong:"arg,required,type='existingfile',help='Path to the configuration file.',name='config-path'"` //nolint: lll
 }
 
 func (r *Run) Run(cli *CLI, version string) error {

internal/cli/run_proxy.go

@@ -4,19 +4,20 @@ import (
 	"context"
 	"fmt"
 	"net"
-	"net/url"
 	"os"
 
 	"github.com/9seconds/mtg/v2/antireplay"
 	"github.com/9seconds/mtg/v2/events"
 	"github.com/9seconds/mtg/v2/internal/config"
+	"github.com/9seconds/mtg/v2/internal/proxyprotocol"
 	"github.com/9seconds/mtg/v2/internal/utils"
 	"github.com/9seconds/mtg/v2/ipblocklist"
 	"github.com/9seconds/mtg/v2/ipblocklist/files"
 	"github.com/9seconds/mtg/v2/logger"
 	"github.com/9seconds/mtg/v2/mtglib"
-	"github.com/9seconds/mtg/v2/network"
+	"github.com/9seconds/mtg/v2/network/v2"
 	"github.com/9seconds/mtg/v2/stats"
+	"github.com/pires/go-proxyproto"
 	"github.com/rs/zerolog"
 	"github.com/yl2chen/cidranger"
 )
@@ -38,43 +39,41 @@ func makeLogger(conf *config.Config) mtglib.Logger {
 }
 
 func makeNetwork(conf *config.Config, version string) (mtglib.Network, error) {
-	tcpTimeout := conf.Network.Timeout.TCP.Get(network.DefaultTimeout)
+	resolver, err := network.GetDNS(conf.GetDNS())
-	httpTimeout := conf.Network.Timeout.HTTP.Get(network.DefaultHTTPTimeout)
-	dohIP := conf.Network.DOHIP.Get(net.ParseIP(network.DefaultDOHHostname)).String()
-	userAgent := "mtg/" + version
-
-	baseDialer, err := network.NewDefaultDialer(tcpTimeout, 0)
 	if err != nil {
-		return nil, fmt.Errorf("cannot build a default dialer: %w", err)
+		return nil, fmt.Errorf("cannot create DNS resolver: %w", err)
 	}
 
-	if len(conf.Network.Proxies) == 0 {
+	base := network.New(
-		return network.NewNetwork(baseDialer, userAgent, dohIP, httpTimeout) // nolint: wrapcheck
+		resolver,
-	}
+		"mtg/"+version,
+		conf.Network.Timeout.TCP.Get(0),
+		conf.Network.Timeout.HTTP.Get(0),
+		conf.Network.Timeout.Idle.Get(0),
+	)
 
-	proxyURLs := make([]*url.URL, 0, len(conf.Network.Proxies))
+	proxyDialers := make([]network.Network, len(conf.Network.Proxies))
-
+	for idx, v := range conf.Network.Proxies {
-	for _, v := range conf.Network.Proxies {
+		value, err := network.NewProxyNetwork(base, v.Get(nil))
-		if value := v.Get(nil); value != nil {
-			proxyURLs = append(proxyURLs, value)
-		}
-	}
-
-	if len(proxyURLs) == 1 {
-		socksDialer, err := network.NewSocks5Dialer(baseDialer, proxyURLs[0])
 		if err != nil {
-			return nil, fmt.Errorf("cannot build socks5 dialer: %w", err)
+			return nil, fmt.Errorf("cannot use %v for proxy url: %w", v.Get(nil), err)
 		}
-
+		proxyDialers[idx] = value
-		return network.NewNetwork(socksDialer, userAgent, dohIP, httpTimeout) // nolint: wrapcheck
 	}
 
-	socksDialer, err := network.NewLoadBalancedSocks5Dialer(baseDialer, proxyURLs)
+	switch len(proxyDialers) {
+	case 0:
+		return base, nil
+	case 1:
+		return proxyDialers[0], nil
+	}
+
+	value, err := network.Join(proxyDialers...)
 	if err != nil {
-		return nil, fmt.Errorf("cannot build socks5 dialer: %w", err)
+		panic(err)
 	}
 
-	return network.NewNetwork(socksDialer, userAgent, dohIP, httpTimeout) // nolint: wrapcheck
+	return value, nil
 }
 
 func makeAntiReplayCache(conf *config.Config) mtglib.AntiReplayCache {
@@ -127,7 +126,12 @@ func makeIPAllowlist(conf config.ListConfig,
 	logger mtglib.Logger,
 	ntw mtglib.Network,
 	updateCallback ipblocklist.FireholUpdateCallback,
-) (allowlist mtglib.IPBlocklist, err error) {
+) (mtglib.IPBlocklist, error) {
+	var (
+		allowlist mtglib.IPBlocklist
+		err       error
+	)
+
 	if !conf.Enabled.Get(false) {
 		allowlist, err = ipblocklist.NewFireholFromFiles(
 			logger.Named("ipblocklist"),
@@ -159,7 +163,7 @@ func makeIPAllowlist(conf config.ListConfig,
 }
 
 func makeEventStream(conf *config.Config, logger mtglib.Logger) (mtglib.EventStream, error) {
-	factories := make([]events.ObserverFactory, 0, 2) // nolint: gomnd
+	factories := make([]events.ObserverFactory, 0, 2)
 
 	if conf.Stats.StatsD.Enabled.Get(false) {
 		statsdFactory, err := stats.NewStatsd(
@@ -185,7 +189,7 @@ func makeEventStream(conf *config.Config, logger mtglib.Logger) (mtglib.EventStr
 			return nil, fmt.Errorf("cannot start a listener for prometheus: %w", err)
 		}
 
-		go prometheus.Serve(listener) // nolint: errcheck
+		go prometheus.Serve(listener) //nolint: errcheck
 
 		factories = append(factories, prometheus.Make)
 	}
@@ -197,7 +201,7 @@ func makeEventStream(conf *config.Config, logger mtglib.Logger) (mtglib.EventStr
 	return events.NewNoopStream(), nil
 }
 
-func runProxy(conf *config.Config, version string) error { // nolint: funlen
+func runProxy(conf *config.Config, version string) error { //nolint: funlen
 	logger := makeLogger(conf)
 
 	logger.BindJSON("configuration", conf.String()).Debug("configuration")
@@ -243,9 +247,12 @@ func runProxy(conf *config.Config, version string) error { // nolint: funlen
 		IPAllowlist:     allowlist,
 		EventStream:     eventStream,
 
-		Secret:             conf.Secret,
+		Secret:                      conf.Secret,
-		DomainFrontingPort: conf.DomainFrontingPort.Get(mtglib.DefaultDomainFrontingPort),
+		DomainFrontingPort:          conf.GetDomainFrontingPort(mtglib.DefaultDomainFrontingPort),
-		PreferIP:           conf.PreferIP.Get(mtglib.DefaultPreferIP),
+		DomainFrontingIP:            conf.GetDomainFrontingIP(nil),
+		DomainFrontingProxyProtocol: conf.GetDomainFrontingProxyProtocol(false),
+		PreferIP:                    conf.PreferIP.Get(mtglib.DefaultPreferIP),
+		AutoUpdate:                  conf.AutoUpdate.Get(false),
 
 		AllowFallbackOnUnknownDC: conf.AllowFallbackOnUnknownDC.Get(false),
 		TolerateTimeSkewness:     conf.TolerateTimeSkewness.Value,
@@ -261,12 +268,20 @@ func runProxy(conf *config.Config, version string) error { // nolint: funlen
 		return fmt.Errorf("cannot start proxy: %w", err)
 	}
 
+	if conf.ProxyProtocolListener.Get(false) {
+		listener = &proxyprotocol.ListenerAdapter{
+			Listener: proxyproto.Listener{
+				Listener: listener,
+			},
+		}
+	}
+
 	ctx := utils.RootContext()
 
-	go proxy.Serve(listener) // nolint: errcheck
+	go proxy.Serve(listener) //nolint: errcheck
 
 	<-ctx.Done()
-	listener.Close()
+	listener.Close() //nolint: errcheck
 	proxy.Shutdown()
 
 	return nil

internal/cli/simple_run.go

@@ -13,17 +13,19 @@ type SimpleRun struct {
 	BindTo string `kong:"arg,required,name='bind-to',help='A host:port to bind proxy to.'"`
 	Secret string `kong:"arg,required,name='secret',help='Proxy secret.'"`
 
-	Debug               bool          `kong:"name='debug',short='d',help='Run in debug mode.'"`                                                                        // nolint: lll
+	Debug               bool          `kong:"name='debug',short='d',help='Run in debug mode.'"`                                                                        //nolint: lll
-	Concurrency         uint64        `kong:"name='concurrency',short='c',default='8192',help='Max number of concurrent connection to proxy.'"`                        // nolint: lll
+	Concurrency         uint64        `kong:"name='concurrency',short='c',default='8192',help='Max number of concurrent connection to proxy.'"`                        //nolint: lll
-	TCPBuffer           string        `kong:"name='tcp-buffer',short='b',default='4KB',help='Deprecated and ignored'"`                                                 // nolint: lll
+	TCPBuffer           string        `kong:"name='tcp-buffer',short='b',default='4KB',help='Deprecated and ignored'"`                                                 //nolint: lll
-	PreferIP            string        `kong:"name='prefer-ip',short='i',default='prefer-ipv6',help='IP preference. By default we prefer IPv6 with fallback to IPv4.'"` // nolint: lll
+	PreferIP            string        `kong:"name='prefer-ip',short='i',default='prefer-ipv6',help='IP preference. By default we prefer IPv6 with fallback to IPv4.'"` //nolint: lll
-	DomainFrontingPort  uint64        `kong:"name='domain-fronting-port',short='p',default='443',help='A port to access for domain fronting.'"`                        // nolint: lll
+	DomainFrontingPort  uint64        `kong:"name='domain-fronting-port',short='p',default='443',help='A port to access for domain fronting.'"`                        //nolint: lll
-	DOHIP               net.IP        `kong:"name='doh-ip',short='n',default='9.9.9.9',help='IP address of DNS-over-HTTP to use.'"`                                    // nolint: lll
+	DomainFrontingIP    string        `kong:"name='domain-fronting-ip',help='An IP address to use for domain fronting instead of resolving the hostname via DNS.'"`    //nolint: lll
-	Timeout             time.Duration `kong:"name='timeout',short='t',default='10s',help='Network timeout to use'"`                                                    // nolint: lll
+	DOHIP               net.IP        `kong:"name='doh-ip',short='n',default='1.1.1.1',help='IP address of DNS-over-HTTP to use.'"`                                    //nolint: lll
-	AntiReplayCacheSize string        `kong:"name='antireplay-cache-size',short='a',default='1MB',help='A size of anti-replay cache to use.'"`                         // nolint: lll
+	Timeout             time.Duration `kong:"name='timeout',short='t',default='10s',help='Network timeout to use'"`                                                    //nolint: lll
+	Socks5Proxies       []string      `kong:"name='socks5-proxy',short='s',help='Socks5 proxies to use for network access.'"`                                          //nolint: lll
+	AntiReplayCacheSize string        `kong:"name='antireplay-cache-size',short='a',default='1MB',help='A size of anti-replay cache to use.'"`                         //nolint: lll
 }
 
-func (s *SimpleRun) Run(cli *CLI, version string) error { // nolint: cyclop
+func (s *SimpleRun) Run(cli *CLI, version string) error { //nolint: cyclop,funlen
 	conf := &config.Config{}
 
 	if err := conf.BindTo.Set(s.BindTo); err != nil {
@@ -34,7 +36,7 @@ func (s *SimpleRun) Run(cli *CLI, version string) error { // nolint: cyclop
 		return fmt.Errorf("incorrect secret: %w", err)
 	}
 
-	if err := conf.Concurrency.Set(strconv.FormatUint(s.Concurrency, 10)); err != nil { // nolint: gomnd
+	if err := conf.Concurrency.Set(strconv.FormatUint(s.Concurrency, 10)); err != nil {
 		return fmt.Errorf("incorrect concurrency: %w", err)
 	}
 
@@ -42,10 +44,16 @@ func (s *SimpleRun) Run(cli *CLI, version string) error { // nolint: cyclop
 		return fmt.Errorf("incorrect prefer-ip: %w", err)
 	}
 
-	if err := conf.DomainFrontingPort.Set(strconv.FormatUint(s.DomainFrontingPort, 10)); err != nil { // nolint: gomnd
+	if err := conf.DomainFrontingPort.Set(strconv.FormatUint(s.DomainFrontingPort, 10)); err != nil {
 		return fmt.Errorf("incorrect domain-fronting-port: %w", err)
 	}
 
+	if s.DomainFrontingIP != "" {
+		if err := conf.DomainFrontingIP.Set(s.DomainFrontingIP); err != nil {
+			return fmt.Errorf("incorrect domain-fronting-ip: %w", err)
+		}
+	}
+
 	if err := conf.Network.DOHIP.Set(s.DOHIP.String()); err != nil {
 		return fmt.Errorf("incorrect doh-ip: %w", err)
 	}
@@ -66,6 +74,16 @@ func (s *SimpleRun) Run(cli *CLI, version string) error { // nolint: cyclop
 		return fmt.Errorf("incorrect antireplay-cache-size: %w", err)
 	}
 
+	for _, v := range s.Socks5Proxies {
+		proxyURL := config.TypeProxyURL{}
+
+		if err := proxyURL.Set(v); err != nil {
+			return fmt.Errorf("incorrect socks5 proxy URL: %w", err)
+		}
+
+		conf.Network.Proxies = append(conf.Network.Proxies, proxyURL)
+	}
+
 	conf.Debug.Value = s.Debug
 	conf.AllowFallbackOnUnknownDC.Value = true
 	conf.Defense.AntiReplay.Enabled.Value = true

internal/config/config.go

@@ -4,6 +4,8 @@ import (
 	"bytes"
 	"encoding/json"
 	"fmt"
+	"net"
+	"net/url"
 
 	"github.com/9seconds/mtg/v2/mtglib"
 )
@@ -21,15 +23,24 @@ type ListConfig struct {
 }
 
 type Config struct {
-	Debug                    TypeBool        `json:"debug"`
+	Debug                       TypeBool        `json:"debug"`
-	AllowFallbackOnUnknownDC TypeBool        `json:"allowFallbackOnUnknownDc"`
+	AllowFallbackOnUnknownDC    TypeBool        `json:"allowFallbackOnUnknownDc"`
-	Secret                   mtglib.Secret   `json:"secret"`
+	Secret                      mtglib.Secret   `json:"secret"`
-	BindTo                   TypeHostPort    `json:"bindTo"`
+	BindTo                      TypeHostPort    `json:"bindTo"`
-	PreferIP                 TypePreferIP    `json:"preferIp"`
+	ProxyProtocolListener       TypeBool        `json:"proxyProtocolListener"`
-	DomainFrontingPort       TypePort        `json:"domainFrontingPort"`
+	PreferIP                    TypePreferIP    `json:"preferIp"`
-	TolerateTimeSkewness     TypeDuration    `json:"tolerateTimeSkewness"`
+	AutoUpdate                  TypeBool        `json:"autoUpdate"`
-	Concurrency              TypeConcurrency `json:"concurrency"`
+	DomainFrontingPort          TypePort        `json:"domainFrontingPort"`
-	Defense                  struct {
+	DomainFrontingIP            TypeIP          `json:"domainFrontingIp"`
+	DomainFrontingProxyProtocol TypeBool        `json:"domainFrontingProxyProtocol"`
+	TolerateTimeSkewness        TypeDuration    `json:"tolerateTimeSkewness"`
+	Concurrency                 TypeConcurrency `json:"concurrency"`
+	DomainFronting              struct {
+		IP            TypeIP   `json:"ip"`
+		Port          TypePort `json:"port"`
+		ProxyProtocol TypeBool `json:"proxyProtocol"`
+	} `json:"domainFronting"`
+	Defense struct {
 		AntiReplay struct {
 			Optional
 
@@ -46,6 +57,7 @@ type Config struct {
 			Idle TypeDuration `json:"idle"`
 		} `json:"timeout"`
 		DOHIP   TypeIP         `json:"dohIp"`
+		DNS     TypeDNSURI     `json:"dns"`
 		Proxies []TypeProxyURL `json:"proxies"`
 	} `json:"network"`
 	Stats struct {
@@ -66,6 +78,37 @@ type Config struct {
 	} `json:"stats"`
 }
 
+func (c *Config) GetDNS() *url.URL {
+	var dohURL *url.URL
+
+	if dohIP := c.Network.DOHIP.Get(nil); dohIP != nil {
+		dohURL, _ = url.Parse("https://" + dohIP.String())
+	}
+
+	return c.Network.DNS.Get(dohURL)
+}
+
+func (c *Config) GetDomainFrontingPort(defaultValue uint) uint {
+	if port := c.DomainFronting.Port.Get(0); port != 0 {
+		return port
+	}
+	return c.DomainFrontingPort.Get(defaultValue)
+}
+
+func (c *Config) GetDomainFrontingIP(defaultValue net.IP) string {
+	if ip := c.DomainFronting.IP.Get(nil); ip != nil {
+		return ip.String()
+	}
+	if ip := c.DomainFrontingIP.Get(defaultValue); ip != nil {
+		return ip.String()
+	}
+	return ""
+}
+
+func (c *Config) GetDomainFrontingProxyProtocol(defaultValue bool) bool {
+	return c.DomainFronting.ProxyProtocol.Get(false) || c.DomainFrontingProxyProtocol.Get(defaultValue)
+}
+
 func (c *Config) Validate() error {
 	if !c.Secret.Valid() {
 		return fmt.Errorf("invalid secret %s", c.Secret.String())

internal/config/parse.go

@@ -5,19 +5,28 @@ import (
 	"encoding/json"
 	"fmt"
 
-	"github.com/pelletier/go-toml"
+	"github.com/pelletier/go-toml/v2"
 )
 
 type tomlConfig struct {
-	Debug                    bool   `toml:"debug" json:"debug,omitempty"`
+	Debug                       bool   `toml:"debug" json:"debug,omitempty"`
-	AllowFallbackOnUnknownDC bool   `toml:"allow-fallback-on-unknown-dc" json:"allowFallbackOnUnknownDc,omitempty"`
+	AllowFallbackOnUnknownDC    bool   `toml:"allow-fallback-on-unknown-dc" json:"allowFallbackOnUnknownDc,omitempty"`
-	Secret                   string `toml:"secret" json:"secret"`
+	Secret                      string `toml:"secret" json:"secret"`
-	BindTo                   string `toml:"bind-to" json:"bindTo"`
+	BindTo                      string `toml:"bind-to" json:"bindTo"`
-	PreferIP                 string `toml:"prefer-ip" json:"preferIp,omitempty"`
+	ProxyProtocolListener       bool   `toml:"proxy-protocol-listener" json:"proxyProtocolListener"`
-	DomainFrontingPort       uint   `toml:"domain-fronting-port" json:"domainFrontingPort,omitempty"`
+	PreferIP                    string `toml:"prefer-ip" json:"preferIp,omitempty"`
-	TolerateTimeSkewness     string `toml:"tolerate-time-skewness" json:"tolerateTimeSkewness,omitempty"`
+	AutoUpdate                  bool   `toml:"auto-update" json:"autoUpdate,omitempty"`
-	Concurrency              uint   `toml:"concurrency" json:"concurrency,omitempty"`
+	DomainFrontingPort          uint   `toml:"domain-fronting-port" json:"domainFrontingPort,omitempty"`
-	Defense                  struct {
+	DomainFrontingIP            string `toml:"domain-fronting-ip" json:"domainFrontingIp,omitempty"`
+	DomainFrontingProxyProtocol bool   `toml:"domain-fronting-proxy-protocol" json:"domainFrontingProxyProtocol,omitempty"`
+	TolerateTimeSkewness        string `toml:"tolerate-time-skewness" json:"tolerateTimeSkewness,omitempty"`
+	Concurrency                 uint   `toml:"concurrency" json:"concurrency,omitempty"`
+	DomainFronting              struct {
+		IP            string `toml:"ip" json:"ip,omitempty"`
+		Port          uint   `toml:"port" json:"port,omitempty"`
+		ProxyProtocol bool   `toml:"proxy-protocol" json:"proxyProtocol,omitempty"`
+	} `toml:"domain-fronting" json:"domainFronting,omitempty"`
+	Defense struct {
 		AntiReplay struct {
 			Enabled   bool    `toml:"enabled" json:"enabled,omitempty"`
 			MaxSize   string  `toml:"max-size" json:"maxSize,omitempty"`
@@ -43,6 +52,7 @@ type tomlConfig struct {
 			Idle string `toml:"idle" json:"idle,omitempty"`
 		} `toml:"timeout" json:"timeout,omitempty"`
 		DOHIP   string   `toml:"doh-ip" json:"dohIp,omitempty"`
+		DNS     string   `toml:"dns" json:"dns,omitempty"`
 		Proxies []string `toml:"proxies" json:"proxies,omitempty"`
 	} `toml:"network" json:"network,omitempty"`
 	Stats struct {

internal/config/type_bool_test.go

@@ -20,7 +20,7 @@ type TypeBoolTestSuite struct {
 }
 
 func (suite *TypeBoolTestSuite) TestUnmarshalFail() {
-	testData := []interface{}{
+	testData := []any{
 		"",
 		"np",
 		"нет",
@@ -29,7 +29,7 @@ func (suite *TypeBoolTestSuite) TestUnmarshalFail() {
 	}
 
 	for _, v := range testData {
-		data, err := json.Marshal(map[string]interface{}{
+		data, err := json.Marshal(map[string]any{
 			"value": v,
 		})
 		suite.NoError(err)

internal/config/type_concurrency.go

@@ -10,7 +10,7 @@ type TypeConcurrency struct {
 }
 
 func (t *TypeConcurrency) Set(value string) error {
-	concurrencyValue, err := strconv.ParseUint(value, 10, 16) // nolint: gomnd
+	concurrencyValue, err := strconv.ParseUint(value, 10, 16)
 	if err != nil {
 		return fmt.Errorf("value is not uint (%s): %w", value, err)
 	}
@@ -41,5 +41,5 @@ func (t TypeConcurrency) MarshalJSON() ([]byte, error) {
 }
 
 func (t TypeConcurrency) String() string {
-	return strconv.FormatUint(uint64(t.Value), 10) // nolint: gomnd
+	return strconv.FormatUint(uint64(t.Value), 10)
 }

internal/config/type_dc.go

@@ -0,0 +1,41 @@
+package config
+
+import (
+	"fmt"
+	"strconv"
+)
+
+type TypeDC struct {
+	Value int
+}
+
+func (t *TypeDC) Set(value string) error {
+	parsed, err := strconv.ParseInt(value, 10, 16)
+	if err != nil {
+		return fmt.Errorf("cannot parse dc: %w", err)
+	}
+
+	if parsed < 0 {
+		parsed = -parsed
+	}
+
+	t.Value = int(parsed)
+
+	return nil
+}
+
+func (t *TypeDC) UnmarshalJSON(data []byte) error {
+	return t.Set(string(data))
+}
+
+func (t TypeDC) MarshalJSON() ([]byte, error) {
+	return []byte(t.String()), nil
+}
+
+func (t TypeDC) String() string {
+	return strconv.Itoa(t.Value)
+}
+
+func (t TypeDC) Get() int {
+	return t.Value
+}

internal/config/type_dc_test.go

@@ -0,0 +1,96 @@
+package config_test
+
+import (
+	"encoding/json"
+	"strconv"
+	"testing"
+
+	"github.com/9seconds/mtg/v2/internal/config"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/suite"
+)
+
+type typeDCTestStruct struct {
+	Value config.TypeDC `json:"value"`
+}
+
+type TypeDCTestSuite struct {
+	suite.Suite
+}
+
+func (suite *TypeDCTestSuite) TestUnmarshalFail() {
+	testData := []string{
+		"-1s",
+		"1202002020202",
+		"xxx",
+		"-11111111111111",
+		"",
+	}
+
+	for _, v := range testData {
+		data, err := json.Marshal(map[string]string{
+			"value": v,
+		})
+		suite.NoError(err)
+
+		suite.T().Run(v, func(t *testing.T) {
+			assert.Error(t, json.Unmarshal(data, &typeDCTestStruct{}))
+		})
+	}
+}
+
+func (suite *TypeDCTestSuite) TestUnmarshalOk() {
+	testData := map[int]int{
+		1:   1,
+		-1:  1,
+		203: 203,
+	}
+
+	for value, expected := range testData {
+		data, err := json.Marshal(map[string]int{
+			"value": value,
+		})
+		suite.NoError(err)
+
+		suite.T().Run(strconv.Itoa(value), func(t *testing.T) {
+			testStruct := &typeDCTestStruct{}
+
+			assert.NoError(t, json.Unmarshal(data, testStruct))
+			assert.Equal(t, expected, testStruct.Value.Value)
+			assert.Equal(t, expected, testStruct.Value.Get())
+		})
+	}
+}
+
+func (suite *TypeDCTestSuite) TestMarshalOk() {
+	testData := map[string]int{
+		"1":   1,
+		"203": 203,
+	}
+
+	for k, v := range testData {
+		value := k
+		expected := v
+
+		suite.T().Run(value, func(t *testing.T) {
+			testStruct := &typeDCTestStruct{}
+
+			assert.NoError(t, testStruct.Value.Set(value))
+
+			data, err := json.Marshal(testStruct)
+			assert.NoError(t, err)
+
+			expectedJSON, err := json.Marshal(map[string]int{
+				"value": expected,
+			})
+			assert.NoError(t, err)
+
+			assert.JSONEq(t, string(expectedJSON), string(data))
+		})
+	}
+}
+
+func TestTypeDC(t *testing.T) {
+	t.Parallel()
+	suite.Run(t, &TypeDCTestSuite{})
+}

internal/config/type_dns_uri.go

@@ -0,0 +1,69 @@
+package config
+
+import (
+	"fmt"
+	"net"
+	"net/url"
+)
+
+type TypeDNSURI struct {
+	Value *url.URL
+}
+
+func (t *TypeDNSURI) Set(value string) error {
+	parsed, err := url.Parse(value)
+	if err != nil {
+		return fmt.Errorf("value is not URI: %w", err)
+	}
+
+	if parsed.Host == "" {
+		parsed.Host = parsed.Path
+		parsed.Path = ""
+		parsed.Scheme = "udp"
+	}
+
+	switch parsed.Scheme {
+	case "https", "tls":
+	case "udp":
+		if ip := net.ParseIP(parsed.Hostname()); ip == nil {
+			return fmt.Errorf("simple DNS must IP address: %s", parsed.Hostname())
+		}
+	default:
+		return fmt.Errorf("unsupported DNS type %s", parsed.Scheme)
+	}
+
+	if parsed.Scheme != "https" && parsed.Path != "" {
+		return fmt.Errorf("path is supported only for DoH: %s", parsed)
+	}
+
+	if parsed.User != nil {
+		return fmt.Errorf("used info is not supported: %s", parsed.User.String())
+	}
+
+	t.Value = parsed
+
+	return nil
+}
+
+func (t *TypeDNSURI) Get(defaultValue *url.URL) *url.URL {
+	if t.Value != nil {
+		return t.Value
+	}
+
+	return defaultValue
+}
+
+func (t *TypeDNSURI) UnmarshalText(data []byte) error {
+	return t.Set(string(data))
+}
+
+func (t TypeDNSURI) MarshalText() ([]byte, error) {
+	return []byte(t.String()), nil
+}
+
+func (t TypeDNSURI) String() string {
+	if t.Value == nil {
+		return ""
+	}
+	return t.Value.String()
+}

internal/config/type_dns_uri_test.go

@@ -0,0 +1,117 @@
+package config_test
+
+import (
+	"encoding/json"
+	"testing"
+
+	"github.com/9seconds/mtg/v2/internal/config"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/suite"
+)
+
+type typeDNSURITestStruct struct {
+	Value config.TypeDNSURI `json:"value"`
+}
+
+type TypeDNSURITestSuite struct {
+	suite.Suite
+}
+
+func (suite *TypeDNSURITestSuite) TestUnmarshalFail() {
+	testData := []string{
+		"xx",
+		"ppar",
+		"",
+		"dns://hahaha",
+		"udp://xcxxcv",
+		"udp://1.1.1.1/xcv",
+		"1.1.1.1/xxx",
+		"tls://dns/xx",
+		"tls://1.1.1.1/xx",
+		"https://user:password@1.1.1.1",
+		"tls://user:password@1.1.1.1",
+		"udp://user:password@1.1.1.1",
+	}
+
+	for _, v := range testData {
+		data, err := json.Marshal(map[string]string{
+			"value": v,
+		})
+		suite.NoError(err)
+
+		suite.T().Run(v, func(t *testing.T) {
+			assert.Error(t, json.Unmarshal(data, &typeDNSURITestStruct{}))
+		})
+	}
+}
+
+func (suite *TypeDNSURITestSuite) TestUnmarshalOk() {
+	testData := []string{
+		"1.1.1.1",
+		"tls://1.1.1.1",
+		"tls://dns.google",
+		"https://1.1.1.1",
+		"https://1.1.1.1/dns-query",
+		"https://dns.google",
+		"https://dns.google/dns-query",
+		"udp://1.1.1.1",
+	}
+
+	for _, v := range testData {
+		data, err := json.Marshal(map[string]string{
+			"value": v,
+		})
+		suite.NoError(err)
+
+		suite.T().Run(v, func(t *testing.T) {
+			testStruct := &typeDNSURITestStruct{}
+			assert.NoError(t, json.Unmarshal(data, testStruct))
+			if v == "1.1.1.1" {
+				v = "udp://" + v
+			}
+			assert.Equal(t, v, testStruct.Value.String())
+		})
+	}
+}
+
+func (suite *TypeDNSURITestSuite) TestMarshalOk() {
+	testData := []string{
+		"tls://1.1.1.1",
+		"tls://dns.google",
+		"https://1.1.1.1",
+		"https://1.1.1.1/dns-query",
+	}
+
+	for _, v := range testData {
+		suite.T().Run(v, func(t *testing.T) {
+			testStruct := &typePreferIPTestStruct{
+				Value: config.TypePreferIP{
+					Value: v,
+				},
+			}
+
+			encodedJSON, err := json.Marshal(testStruct)
+			assert.NoError(t, err)
+
+			expectedJSON, err := json.Marshal(map[string]string{
+				"value": v,
+			})
+			assert.NoError(t, err)
+
+			assert.JSONEq(t, string(expectedJSON), string(encodedJSON))
+		})
+	}
+}
+
+func (suite *TypeDNSURITestSuite) TestGet() {
+	value := config.TypeDNSURI{}
+	suite.Nil(value.Get(nil))
+
+	suite.NoError(value.Set("tls://1.1.1.1"))
+	suite.NotNil(value.Get(nil))
+}
+
+func TestDNSURI(t *testing.T) {
+	t.Parallel()
+	suite.Run(t, &TypeDNSURITestSuite{})
+}

internal/config/type_error_rate.go

@@ -12,7 +12,7 @@ type TypeErrorRate struct {
 }
 
 func (t *TypeErrorRate) Set(value string) error {
-	parsedValue, err := strconv.ParseFloat(value, 64) // nolint: gomnd
+	parsedValue, err := strconv.ParseFloat(value, 64)
 	if err != nil {
 		return fmt.Errorf("value is not a float (%s): %w", value, err)
 	}
@@ -43,5 +43,5 @@ func (t TypeErrorRate) MarshalJSON() ([]byte, error) {
 }
 
 func (t TypeErrorRate) String() string {
-	return strconv.FormatFloat(t.Value, 'f', -1, 64) // nolint: gomnd
+	return strconv.FormatFloat(t.Value, 'f', -1, 64)
 }

internal/config/type_hostport.go

@@ -18,7 +18,7 @@ func (t *TypeHostPort) Set(value string) error {
 		return fmt.Errorf("incorrect host:port value (%v): %w", value, err)
 	}
 
-	portValue, err := strconv.ParseUint(port, 10, 16) // nolint: gomnd
+	portValue, err := strconv.ParseUint(port, 10, 16)
 	if err != nil {
 		return fmt.Errorf("incorrect port number (%v): %w", value, err)
 	}

internal/config/type_port.go

@@ -10,7 +10,7 @@ type TypePort struct {
 }
 
 func (t *TypePort) Set(value string) error {
-	portValue, err := strconv.ParseUint(value, 10, 16) // nolint: gomnd
+	portValue, err := strconv.ParseUint(value, 10, 16)
 	if err != nil {
 		return fmt.Errorf("incorrect port number (%v): %w", value, err)
 	}

internal/config/type_proxy_url.go

@@ -15,20 +15,24 @@ type TypeProxyURL struct {
 func (t *TypeProxyURL) Set(value string) error {
 	parsedURL, err := url.Parse(value)
 	if err != nil {
-		return fmt.Errorf("value is not corect URL (%s): %w", value, err)
+		return fmt.Errorf("value is not correct URL (%s): %w", value, err)
 	}
 
 	if parsedURL.Host == "" {
 		return fmt.Errorf("url has to have a schema: %s", value)
 	}
 
-	if parsedURL.Scheme != "socks5" {
+	switch parsedURL.Scheme {
+	case "socks5", "socks5h":
+	default:
 		return fmt.Errorf("unsupported schema: %s", parsedURL.Scheme)
 	}
 
 	if _, _, err := net.SplitHostPort(parsedURL.Host); err != nil {
-		parsedURL.Host = net.JoinHostPort(parsedURL.Host,
+		parsedURL.Host = net.JoinHostPort(
-			typeProxyURLDefaultSOCKS5Port)
+			parsedURL.Host,
+			typeProxyURLDefaultSOCKS5Port,
+		)
 	}
 
 	t.Value = parsedURL

internal/proxyprotocol/adapter.go

@@ -0,0 +1,20 @@
+package proxyprotocol
+
+import (
+	"net"
+
+	"github.com/pires/go-proxyproto"
+)
+
+type ListenerAdapter struct {
+	proxyproto.Listener
+}
+
+func (l *ListenerAdapter) Accept() (net.Conn, error) {
+	conn, err := l.Listener.Accept()
+	if err != nil {
+		return nil, err
+	}
+
+	return connWrapper{conn.(*proxyproto.Conn)}, nil
+}

internal/proxyprotocol/conn.go

@@ -0,0 +1,25 @@
+package proxyprotocol
+
+import "github.com/pires/go-proxyproto"
+
+type connWrapper struct {
+	*proxyproto.Conn
+}
+
+func (c connWrapper) CloseRead() error {
+	tcpConn, ok := c.TCPConn()
+	if !ok {
+		panic("we support only tcp connections")
+	}
+
+	return tcpConn.CloseRead()
+}
+
+func (c connWrapper) CloseWrite() error {
+	tcpConn, ok := c.TCPConn()
+	if !ok {
+		panic("we support only tcp connections")
+	}
+
+	return tcpConn.CloseWrite()
+}

internal/testlib/capture_output.go

@@ -27,7 +27,7 @@ func captureOutput(filefp **os.File, callback func()) string {
 	closeChan := make(chan bool)
 
 	go func() {
-		io.Copy(buf, reader) // nolint: errcheck
+		io.Copy(buf, reader) //nolint: errcheck
 		close(closeChan)
 	}()
 
@@ -35,7 +35,7 @@ func captureOutput(filefp **os.File, callback func()) string {
 
 	callback()
 
-	writer.Close()
+	writer.Close() //nolint: errcheck
 	<-closeChan
 
 	return strings.TrimSpace(buf.String())

internal/testlib/mtglib_network_mock.go

@@ -15,17 +15,17 @@ type MtglibNetworkMock struct {
 func (m *MtglibNetworkMock) Dial(network, address string) (essentials.Conn, error) {
 	args := m.Called(network, address)
 
-	return args.Get(0).(essentials.Conn), args.Error(1) // nolint: wrapcheck, forcetypeassert
+	return args.Get(0).(essentials.Conn), args.Error(1) //nolint: wrapcheck, forcetypeassert
 }
 
 func (m *MtglibNetworkMock) DialContext(ctx context.Context, network, address string) (essentials.Conn, error) {
 	args := m.Called(ctx, network, address)
 
-	return args.Get(0).(essentials.Conn), args.Error(1) // nolint: wrapcheck, forcetypeassert
+	return args.Get(0).(essentials.Conn), args.Error(1) //nolint: wrapcheck, forcetypeassert
 }
 
 func (m *MtglibNetworkMock) MakeHTTPClient(dialFunc func(ctx context.Context,
 	network, address string) (essentials.Conn, error),
 ) *http.Client {
-	return m.Called(dialFunc).Get(0).(*http.Client) // nolint: forcetypeassert
+	return m.Called(dialFunc).Get(0).(*http.Client) //nolint: forcetypeassert
 }

internal/testlib/net_conn_mock.go

@@ -24,33 +24,33 @@ func (n *EssentialsConnMock) Write(b []byte) (int, error) {
 }
 
 func (n *EssentialsConnMock) Close() error {
-	return n.Called().Error(0) // nolint: wrapcheck
+	return n.Called().Error(0) //nolint: wrapcheck
 }
 
 func (n *EssentialsConnMock) CloseRead() error {
-	return n.Called().Error(0) // nolint: wrapcheck
+	return n.Called().Error(0) //nolint: wrapcheck
 }
 
 func (n *EssentialsConnMock) CloseWrite() error {
-	return n.Called().Error(0) // nolint: wrapcheck
+	return n.Called().Error(0) //nolint: wrapcheck
 }
 
 func (n *EssentialsConnMock) LocalAddr() net.Addr {
-	return n.Called().Get(0).(net.Addr) // nolint: forcetypeassert
+	return n.Called().Get(0).(net.Addr) //nolint: forcetypeassert
 }
 
 func (n *EssentialsConnMock) RemoteAddr() net.Addr {
-	return n.Called().Get(0).(net.Addr) // nolint: forcetypeassert
+	return n.Called().Get(0).(net.Addr) //nolint: forcetypeassert
 }
 
 func (n *EssentialsConnMock) SetDeadline(t time.Time) error {
-	return n.Called(t).Error(0) // nolint: wrapcheck
+	return n.Called(t).Error(0) //nolint: wrapcheck
 }
 
 func (n *EssentialsConnMock) SetReadDeadline(t time.Time) error {
-	return n.Called(t).Error(0) // nolint: wrapcheck
+	return n.Called(t).Error(0) //nolint: wrapcheck
 }
 
 func (n *EssentialsConnMock) SetWriteDeadline(t time.Time) error {
-	return n.Called(t).Error(0) // nolint: wrapcheck
+	return n.Called(t).Error(0) //nolint: wrapcheck
 }

internal/utils/net_listener.go

@@ -14,11 +14,11 @@ type Listener struct {
 func (l Listener) Accept() (net.Conn, error) {
 	conn, err := l.Listener.Accept()
 	if err != nil {
-		return nil, err // nolint: wrapcheck
+		return nil, err //nolint: wrapcheck
 	}
 
 	if err := network.SetClientSocketOptions(conn, 0); err != nil {
-		conn.Close()
+		conn.Close() //nolint: errcheck
 
 		return nil, fmt.Errorf("cannot set TCP options: %w", err)
 	}

internal/utils/rlimit.go

@@ -1,25 +0,0 @@
-//go:build !windows
-// +build !windows
-
-package utils
-
-import (
-	"fmt"
-
-	"golang.org/x/sys/unix"
-)
-
-func SetLimits() error {
-	rLimit := unix.Rlimit{}
-	if err := unix.Getrlimit(unix.RLIMIT_NOFILE, &rLimit); err != nil {
-		return fmt.Errorf("cannot get rlimit: %w", err)
-	}
-
-	rLimit.Cur = rLimit.Max
-
-	if err := unix.Setrlimit(unix.RLIMIT_NOFILE, &rLimit); err != nil {
-		return fmt.Errorf("cannot set rlimit: %w", err)
-	}
-
-	return nil
-}

internal/utils/rlimit_windows.go

@@ -1,8 +0,0 @@
-//go:build windows
-// +build windows
-
-package utils
-
-func SetLimits() error {
-	return nil
-}

ipblocklist/files/doc.go

@@ -0,0 +1,8 @@
+// files defines a set of abstraction for 'files': an openable entities that
+// could be read after.
+//
+// This is not a file on a filesystem of your local machine, it also can
+// include "in memory" files or even remote ones, like HTTP endpoints. If you
+// make a GET request to HTTP endpoint, then a body is readable and you can
+// consider it as an openable file.
+package files

ipblocklist/files/http.go

@@ -22,8 +22,8 @@ func (h httpFile) Open(ctx context.Context) (io.ReadCloser, error) {
 	response, err := h.http.Do(request)
 	if err != nil {
 		if response != nil {
-			io.Copy(io.Discard, response.Body) // nolint: errcheck
+			io.Copy(io.Discard, response.Body) //nolint: errcheck
-			response.Body.Close()
+			response.Body.Close()              //nolint: errcheck
 		}
 
 		return nil, fmt.Errorf("cannot get url %s: %w", h.url, err)
@@ -40,6 +40,8 @@ func (h httpFile) String() string {
 	return h.url
 }
 
+// NewHTTP returns a file abstraction for HTTP/HTTPS endpoint. You also need to
+// provide a valid instance of [http.Client] to access it.
 func NewHTTP(client *http.Client, endpoint string) (File, error) {
 	if client == nil {
 		return nil, ErrBadHTTPClient

ipblocklist/files/http_test.go

@@ -22,7 +22,7 @@ type HTTPTestSuite struct {
 }
 
 func (suite *HTTPTestSuite) makeFile(path string) (files.File, error) {
-	return files.NewHTTP(suite.httpClient, suite.httpServer.URL+"/"+path) // nolint: wrapcheck
+	return files.NewHTTP(suite.httpClient, suite.httpServer.URL+"/"+path) //nolint: wrapcheck
 }
 
 func (suite *HTTPTestSuite) SetupSuite() {
@@ -77,7 +77,7 @@ func (suite *HTTPTestSuite) TestOk() {
 	readCloser, err := file.Open(suite.ctx)
 	suite.NoError(err)
 
-	defer readCloser.Close()
+	defer readCloser.Close() //nolint: errcheck
 
 	data, err := io.ReadAll(readCloser)
 	suite.NoError(err)

ipblocklist/files/init.go

@@ -6,9 +6,16 @@ import (
 	"io"
 )
 
+// ErrBadHTTPClient is returned if given HTTP client is initialized
+// incorrectly.
 var ErrBadHTTPClient = errors.New("incorrect http client")
 
+// File is an abstraction for a entity that can be opened in some context.
 type File interface {
+	// Open returns an readable entity for a file. It is important to not forget
+	// to close it after the usage.
 	Open(context.Context) (io.ReadCloser, error)
+
+	// String returns a short text description for the file
 	String() string
 }

ipblocklist/files/local.go

@@ -12,13 +12,14 @@ type localFile struct {
 }
 
 func (l localFile) Open(ctx context.Context) (io.ReadCloser, error) {
-	return os.Open(l.path) // nolint: wrapcheck
+	return os.Open(l.path) //nolint: wrapcheck
 }
 
 func (l localFile) String() string {
 	return l.path
 }
 
+// NewLocal returns an openable File for a path on a local file system.
 func NewLocal(path string) (File, error) {
 	if stat, err := os.Stat(path); os.IsNotExist(err) || stat.IsDir() || stat.Mode().Perm()&0o400 == 0 {
 		return nil, fmt.Errorf("%s is not a readable file", path)

ipblocklist/files/mem.go

@@ -19,6 +19,7 @@ func (m memFile) String() string {
 	return "mem"
 }
 
+// NewMem returns an openable file that is kept in RAM.
 func NewMem(networks []*net.IPNet) File {
 	builder := strings.Builder{}
 

ipblocklist/firehol.go

@@ -19,27 +19,27 @@ import (
 var (
 	fireholRegexpComment = regexp.MustCompile(`\s*#.*?$`)
 
-	fireholIPv4DefaultCIDR = net.CIDRMask(32, 32)   // nolint: gomnd
+	fireholIPv4DefaultCIDR = net.CIDRMask(32, 32)
-	fireholIPv6DefaultCIDR = net.CIDRMask(128, 128) // nolint: gomnd
+	fireholIPv6DefaultCIDR = net.CIDRMask(128, 128)
 )
 
 // FireholUpdateCallback defines a signature of the callback that has to be
 // execute when ip list is updated.
 type FireholUpdateCallback func(context.Context, int)
 
-// Firehol is IPBlocklist which uses lists from FireHOL:
+// Firehol is [mtglib.IPBlocklist] which uses lists from FireHOL:
 // https://iplists.firehol.org/
 //
-// It can use both local files and remote URLs. This is not necessary
+// It can use both local files and remote URLs. This is not necessary that
-// that blocklists should be taken from this website, we expect only
+// blocklists should be taken from this website, we expect only compatible
-// compatible formats here.
+// formats here.
 //
 // Example of the format:
 //
-//     # this is a comment
+//	# this is a comment
-//     # to ignore
+//	# to ignore
-//     127.0.0.1   # you can specify an IP
+//	127.0.0.1   # you can specify an IP
-//     10.0.0.0/8  # or cidr
+//	10.0.0.0/8  # or cidr
 type Firehol struct {
 	ctx         context.Context
 	ctxCancel   context.CancelFunc
@@ -78,8 +78,7 @@ func (f *Firehol) Contains(ip net.IP) bool {
 
 // Run starts a background update process.
 //
-// This is a blocking method so you probably want to run it in a
+// This is a blocking method so you probably want to run it in a goroutine.
-// goroutine.
 func (f *Firehol) Run(updateEach time.Duration) {
 	if updateEach == 0 {
 		updateEach = DefaultFireholUpdateEach
@@ -113,30 +112,27 @@ func (f *Firehol) update() {
 	defer cancel()
 
 	wg := &sync.WaitGroup{}
-	wg.Add(len(f.blocklists))
 
 	mutex := &sync.Mutex{}
 	ranger := cidranger.NewPCTrieRanger()
 
 	for _, v := range f.blocklists {
-		go func(file files.File) {
+		wg.Go(func() {
-			defer wg.Done()
+			logger := f.logger.BindStr("filename", v.String())
 
-			logger := f.logger.BindStr("filename", file.String())
+			fileContent, err := v.Open(ctx)
-
-			fileContent, err := file.Open(ctx)
 			if err != nil {
 				logger.WarningError("update has failed", err)
 
 				return
 			}
 
-			defer fileContent.Close()
+			defer fileContent.Close() //nolint: errcheck
 
 			if err := f.updateFromFile(mutex, ranger, bufio.NewScanner(fileContent)); err != nil {
 				logger.WarningError("update has failed", err)
 			}
-		}(v)
+		})
 	}
 
 	wg.Wait()
@@ -211,8 +207,8 @@ func (f *Firehol) updateParseLine(text string) (*net.IPNet, error) {
 
 // NewFirehol creates a new instance of FireHOL IP blocklist.
 //
-// This method does not start an update process so please execute Run
+// This method does not start an update process so please execute Run when it
-// when it is necessary.
+// is necessary.
 func NewFirehol(logger mtglib.Logger, network mtglib.Network,
 	downloadConcurrency uint,
 	urls []string,
@@ -244,6 +240,9 @@ func NewFirehol(logger mtglib.Logger, network mtglib.Network,
 	return NewFireholFromFiles(logger, downloadConcurrency, blocklists, updateCallback)
 }
 
+// NewFirehol creates a new instance of FireHOL IP blocklist.
+//
+// This method creates this instances from a given list of files.
 func NewFireholFromFiles(logger mtglib.Logger,
 	downloadConcurrency uint,
 	blocklists []files.File,

ipblocklist/firehol_test.go

@@ -35,9 +35,9 @@ func (suite *FireholTestSuite) SetupSuite() {
 			panic(err)
 		}
 
-		defer filefp.Close()
+		defer filefp.Close() //nolint: errcheck
 
-		io.Copy(w, filefp) // nolint: errcheck
+		io.Copy(w, filefp) //nolint: errcheck
 	})
 
 	suite.httpServer = httptest.NewServer(mux)

ipblocklist/init.go

@@ -1,8 +1,8 @@
 // Package ipblocklist contains default implementation of the
-// IPBlocklist for mtg.
+// [mtglib.IPBlocklist] for mtg.
 //
-// Please check documentation for mtglib.IPBlocklist interface to get an
+// Please check documentation for [mtglib.IPBlocklist] interface to get an idea
-// idea of this abstraction.
+// of this abstraction.
 package ipblocklist
 
 import "time"
@@ -12,7 +12,7 @@ const (
 	// concurrent downloads of ip blocklists for Firehol.
 	DefaultFireholDownloadConcurrency = 1
 
-	// DefaultFireholUpdateEach defines a default time period when
+	// DefaultFireholUpdateEach defines a default time period when Firehol
-	// Firehol requests updates of the blocklists.
+	// requests updates of the blocklists.
 	DefaultFireholUpdateEach = 6 * time.Hour
 )

ipblocklist/noop.go

@@ -13,8 +13,7 @@ func (n noop) Contains(ip net.IP) bool      { return false }
 func (n noop) Run(updateEach time.Duration) {}
 func (n noop) Shutdown()                    {}
 
-// NewNoop returns a dummy ipblocklist which allows all incoming
+// NewNoop returns a dummy ipblocklist which allows all incoming connections.
-// connections.
 func NewNoop() mtglib.IPBlocklist {
 	return noop{}
 }

logger/init.go

@@ -1,14 +1,12 @@
-// Package logger has implementation of loggers for mtglib.Logger
+// Package logger has implementation of loggers for [mtglib.Logger] interface.
-// interface.
 //
-// Please see a description of that interface to get some agreements
+// Please see a description of that interface to get some agreements which are
-// which are used by mtglib.
+// used by mtglib.
 package logger
 
-// StdLikeLogger is an interface which is close to log.Logger. This is
+// StdLikeLogger is an interface which is close to [log.Logger]. This is
-// commonly used by many 3pp tools. While mtglib itself does not need
+// commonly used by many 3pp tools. While mtglib itself does not need it, it is
-// it, it is always a good idea to support it and have a transient end
+// always a good idea to support it and have a transient end to end logging.
-// to end logging.
 type StdLikeLogger interface {
-	Printf(format string, args ...interface{})
+	Printf(format string, args ...any)
 }

logger/noop.go

@@ -8,7 +8,7 @@ func (n noopLogger) Named(_ string) mtglib.Logger          { return n }
 func (n noopLogger) BindInt(_ string, _ int) mtglib.Logger { return n }
 func (n noopLogger) BindStr(_, _ string) mtglib.Logger     { return n }
 func (n noopLogger) BindJSON(_, _ string) mtglib.Logger    { return n }
-func (n noopLogger) Printf(_ string, _ ...interface{})     {}
+func (n noopLogger) Printf(_ string, _ ...any)             {}
 func (n noopLogger) Info(_ string)                         {}
 func (n noopLogger) Warning(_ string)                      {}
 func (n noopLogger) Debug(_ string)                        {}

logger/zerolog.go

@@ -78,7 +78,7 @@ func (z *zeroLogContext) BindJSON(name, value string) mtglib.Logger {
 	}
 }
 
-func (z *zeroLogContext) Printf(format string, args ...interface{}) {
+func (z *zeroLogContext) Printf(format string, args ...any) {
 	z.Debug(fmt.Sprintf(format, args...))
 }
 

logger/zerolog_test.go

@@ -116,6 +116,6 @@ func (suite *ZeroLoggerTestSuite) TestIndependence() {
 	suite.NotContains("lalala", log12Output)
 }
 
-func TestZeroLogger(t *testing.T) { // nolint: paralleltest
+func TestZeroLogger(t *testing.T) { //nolint: paralleltest
 	suite.Run(t, &ZeroLoggerTestSuite{})
 }

main.go

@@ -9,55 +9,14 @@
 package main
 
 import (
-	"fmt"
-	"math/rand"
-	"runtime/debug"
-	"strconv"
-	"time"
-
 	"github.com/9seconds/mtg/v2/internal/cli"
-	"github.com/9seconds/mtg/v2/internal/utils"
 	"github.com/alecthomas/kong"
 )
 
-var version = "dev" // has to be set by ldflags
-
 func main() {
-	rand.Seed(time.Now().UTC().UnixNano())
-
-	if err := utils.SetLimits(); err != nil {
-		panic(err)
-	}
-
-	if buildInfo, ok := debug.ReadBuildInfo(); ok {
-		vcsCommit := "<no-commit>"
-		vcsDate := time.Now()
-		vcsDirty := ""
-
-		for _, setting := range buildInfo.Settings {
-			switch setting.Key {
-			case "vcs.time":
-				vcsDate, _ = time.Parse(time.RFC3339, setting.Value)
-			case "vcs.revision":
-				vcsCommit = setting.Value
-			case "vcs.modified":
-				if isDirty, _ := strconv.ParseBool(setting.Value); isDirty {
-					vcsDirty = " [dirty]"
-				}
-			}
-		}
-
-		version = fmt.Sprintf("%s (%s: %s on %s%s)",
-			version,
-			buildInfo.GoVersion,
-			vcsDate.Format(time.RFC3339),
-			vcsCommit,
-			vcsDirty)
-	}
-
 	cli := &cli.CLI{}
 	ctx := kong.Parse(cli, kong.Vars{
-		"version": version,
+		"version": getVersion(),
 	})
 
 	ctx.FatalIfErrorf(ctx.Run(cli, version))

mise.lock

@@ -0,0 +1,42 @@
+[[tools.go]]
+version = "1.26.0"
+backend = "core:go"
+"platforms.linux-arm64" = { checksum = "sha256:bd03b743eb6eb4193ea3c3fd3956546bf0e3ca5b7076c8226334afe6b75704cd", url = "https://dl.google.com/go/go1.26.0.linux-arm64.tar.gz"}
+"platforms.linux-x64" = { checksum = "sha256:aac1b08a0fb0c4e0a7c1555beb7b59180b05dfc5a3d62e40e9de90cd42f88235", url = "https://dl.google.com/go/go1.26.0.linux-amd64.tar.gz"}
+"platforms.macos-arm64" = { checksum = "sha256:b1640525dfe68f066d56f200bef7bf4dce955a1a893bd061de6754c211431023", url = "https://dl.google.com/go/go1.26.0.darwin-arm64.tar.gz"}
+"platforms.macos-x64" = { checksum = "sha256:1ca28b7703cbea05a65b2a1d92d6b308610ef92f8824578a0874f2e60c9d5a22", url = "https://dl.google.com/go/go1.26.0.darwin-amd64.tar.gz"}
+"platforms.windows-x64" = { checksum = "sha256:9bbe0fc64236b2b51f6255c05c4232532b8ecc0e6d2e00950bd3021d8a4d07d4", url = "https://dl.google.com/go/go1.26.0.windows-amd64.zip"}
+
+[[tools."go:golang.org/x/pkgsite/cmd/pkgsite"]]
+version = "latest"
+backend = "go:golang.org/x/pkgsite/cmd/pkgsite"
+
+[[tools."go:golang.org/x/tools/gopls"]]
+version = "0.21.1"
+backend = "go:golang.org/x/tools/gopls"
+
+[[tools."go:golang.org/x/vuln/cmd/govulncheck"]]
+version = "1.1.4"
+backend = "go:golang.org/x/vuln/cmd/govulncheck"
+
+[[tools."go:mvdan.cc/gofumpt"]]
+version = "0.9.2"
+backend = "go:mvdan.cc/gofumpt"
+
+[[tools.golangci-lint]]
+version = "2.10.1"
+backend = "aqua:golangci/golangci-lint"
+"platforms.linux-arm64" = { checksum = "sha256:6652b42ae02915eb2f9cb2a2e0cac99514c8eded8388d88ae3e06e1a52c00de8", url = "https://github.com/golangci/golangci-lint/releases/download/v2.10.1/golangci-lint-2.10.1-linux-arm64.tar.gz"}
+"platforms.linux-x64" = { checksum = "sha256:dfa775874cf0561b404a02a8f4481fc69b28091da95aa697259820d429b09c99", url = "https://github.com/golangci/golangci-lint/releases/download/v2.10.1/golangci-lint-2.10.1-linux-amd64.tar.gz"}
+"platforms.macos-arm64" = { checksum = "sha256:03bfadf67e52b441b7ec21305e501c717df93c959836d66c7f97312654acb297", url = "https://github.com/golangci/golangci-lint/releases/download/v2.10.1/golangci-lint-2.10.1-darwin-arm64.tar.gz"}
+"platforms.macos-x64" = { checksum = "sha256:66fb0da81b8033b477f97eea420d4b46b230ca172b8bb87c6610109f3772b6b6", url = "https://github.com/golangci/golangci-lint/releases/download/v2.10.1/golangci-lint-2.10.1-darwin-amd64.tar.gz"}
+"platforms.windows-x64" = { checksum = "sha256:c60c87695e79db8e320f0e5be885059859de52bb5ee5f11be5577828570bc2a3", url = "https://github.com/golangci/golangci-lint/releases/download/v2.10.1/golangci-lint-2.10.1-windows-amd64.zip"}
+
+[[tools.goreleaser]]
+version = "2.14.1"
+backend = "aqua:goreleaser/goreleaser"
+"platforms.linux-arm64" = { checksum = "sha256:a84d3b27f052c12ad5c8342d7caf1450a7174a305730aed21d72db09301e49a5", url = "https://github.com/goreleaser/goreleaser/releases/download/v2.14.1/goreleaser_Linux_arm64.tar.gz"}
+"platforms.linux-x64" = { checksum = "sha256:2df975a7acbfdeaf888d596cab0024d48ec7fb7d747e1d08b90948b791f40a5f", url = "https://github.com/goreleaser/goreleaser/releases/download/v2.14.1/goreleaser_Linux_x86_64.tar.gz"}
+"platforms.macos-arm64" = { checksum = "sha256:9f2e47f847b4f4177376fc6aa6914fbc7f673f59720076747e738b578c2e896e", url = "https://github.com/goreleaser/goreleaser/releases/download/v2.14.1/goreleaser_Darwin_all.tar.gz"}
+"platforms.macos-x64" = { checksum = "sha256:9f2e47f847b4f4177376fc6aa6914fbc7f673f59720076747e738b578c2e896e", url = "https://github.com/goreleaser/goreleaser/releases/download/v2.14.1/goreleaser_Darwin_all.tar.gz"}
+"platforms.windows-x64" = { checksum = "sha256:d7a3d8ba795e97ab8c4f8003630d300da164adf21fde5a4049440c20f15c3137", url = "https://github.com/goreleaser/goreleaser/releases/download/v2.14.1/goreleaser_Windows_x86_64.zip"}

mtglib/conns.go

@@ -3,10 +3,12 @@ package mtglib
 import (
 	"bytes"
 	"context"
+	"fmt"
 	"io"
-	"sync"
+	"net"
 
 	"github.com/9seconds/mtg/v2/essentials"
+	"github.com/pires/go-proxyproto"
 )
 
 type connTraffic struct {
@@ -24,7 +26,7 @@ func (c connTraffic) Read(b []byte) (int, error) {
 		c.stream.Send(c.ctx, NewEventTraffic(c.streamID, uint(n), true))
 	}
 
-	return n, err // nolint: wrapcheck
+	return n, err //nolint: wrapcheck
 }
 
 func (c connTraffic) Write(b []byte) (int, error) {
@@ -34,28 +36,21 @@ func (c connTraffic) Write(b []byte) (int, error) {
 		c.stream.Send(c.ctx, NewEventTraffic(c.streamID, uint(n), false))
 	}
 
-	return n, err // nolint: wrapcheck
+	return n, err //nolint: wrapcheck
 }
 
 type connRewind struct {
 	essentials.Conn
 
-	active io.Reader
 	buf    bytes.Buffer
-	mutex  sync.RWMutex
+	active io.Reader
 }
 
 func (c *connRewind) Read(p []byte) (int, error) {
-	c.mutex.RLock()
+	return c.active.Read(p)
-	defer c.mutex.RUnlock()
-
-	return c.active.Read(p) // nolint: wrapcheck
 }
 
 func (c *connRewind) Rewind() {
-	c.mutex.Lock()
-	defer c.mutex.Unlock()
-
 	c.active = io.MultiReader(&c.buf, c.Conn)
 }
 
@@ -67,3 +62,36 @@ func newConnRewind(conn essentials.Conn) *connRewind {
 
 	return rv
 }
+
+type connProxyProtocol struct {
+	essentials.Conn
+
+	sourceAddr     net.Addr
+	headersWritten bool
+}
+
+func (c *connProxyProtocol) Write(p []byte) (int, error) {
+	if !c.headersWritten {
+		headers := proxyproto.HeaderProxyFromAddrs(2, c.sourceAddr, c.RemoteAddr())
+
+		toSend, err := headers.Format()
+		if err != nil {
+			panic(err)
+		}
+
+		if _, err := c.Conn.Write(toSend); err != nil {
+			return 0, fmt.Errorf("cannot send proxy protocol header: %w", err)
+		}
+
+		c.headersWritten = true
+	}
+
+	return c.Conn.Write(p)
+}
+
+func newConnProxyProtocol(source, target essentials.Conn) *connProxyProtocol {
+	return &connProxyProtocol{
+		Conn:       target,
+		sourceAddr: source.RemoteAddr(),
+	}
+}

mtglib/conns_internal_test.go

@@ -1,14 +1,17 @@
 package mtglib
 
 import (
+	"bufio"
 	"bytes"
 	"context"
 	"errors"
 	"io"
+	"net"
 	"testing"
 	"time"
 
 	"github.com/9seconds/mtg/v2/internal/testlib"
+	"github.com/pires/go-proxyproto"
 	"github.com/stretchr/testify/mock"
 	"github.com/stretchr/testify/suite"
 )
@@ -22,7 +25,7 @@ type ConnRewindBaseConn struct {
 func (c *ConnRewindBaseConn) Read(p []byte) (int, error) {
 	c.Called(p)
 
-	return c.readBuffer.Read(p) // nolint: wrapcheck
+	return c.readBuffer.Read(p) //nolint: wrapcheck
 }
 
 type ConnTrafficTestSuite struct {
@@ -69,7 +72,7 @@ func (suite *ConnTrafficTestSuite) TestReadOk() {
 	suite.Equal(10, n)
 }
 
-func (suite *ConnTrafficTestSuite) TestReadErr() { // nolint: dupl
+func (suite *ConnTrafficTestSuite) TestReadErr() { //nolint: dupl
 	suite.eventStreamMock.
 		On("Send", mock.Anything, mock.Anything).
 		Once().
@@ -125,7 +128,7 @@ func (suite *ConnTrafficTestSuite) TestWriteOk() {
 	suite.Equal(10, n)
 }
 
-func (suite *ConnTrafficTestSuite) TestWriteErr() { // nolint: dupl
+func (suite *ConnTrafficTestSuite) TestWriteErr() { //nolint: dupl
 	suite.eventStreamMock.
 		On("Send", mock.Anything, mock.Anything).
 		Once().
@@ -200,6 +203,94 @@ func (suite *ConnRewindTestSuite) TestRead() {
 	suite.Equal([]byte{1, 2, 3, 4, 5, 6, 7, 8, 9, 10}, data)
 }
 
+type ConnProxyProtocolTestSuite struct {
+	suite.Suite
+
+	sourceConnMock *testlib.EssentialsConnMock
+	targetConnMock *testlib.EssentialsConnMock
+	conn           *connProxyProtocol
+}
+
+func (suite *ConnProxyProtocolTestSuite) SetupTest() {
+	suite.sourceConnMock = &testlib.EssentialsConnMock{}
+	suite.targetConnMock = &testlib.EssentialsConnMock{}
+
+	localAddr := &net.TCPAddr{
+		IP: net.ParseIP("127.0.0.1").To4(),
+	}
+	remoteAddr := &net.TCPAddr{
+		IP: net.ParseIP("127.0.0.2").To4(),
+	}
+
+	suite.sourceConnMock.
+		On("RemoteAddr").
+		Return(localAddr)
+	suite.targetConnMock.
+		On("RemoteAddr").
+		Maybe().
+		Return(remoteAddr)
+
+	suite.conn = newConnProxyProtocol(suite.sourceConnMock, suite.targetConnMock)
+}
+
+func (suite *ConnProxyProtocolTestSuite) TestRead() {
+	value := []byte{1, 2, 3, 4, 5}
+	toRead := make([]byte, len(value))
+
+	suite.targetConnMock.
+		On("Read", mock.AnythingOfType("[]uint8")).
+		Once().
+		Return(len(toRead), nil).
+		Run(func(args mock.Arguments) {
+			arr := args.Get(0).([]byte)
+			copy(arr, value)
+		})
+
+	n, err := suite.conn.Read(toRead)
+	suite.Equal(len(value), n)
+	suite.NoError(err)
+	suite.Equal(value, toRead)
+}
+
+func (suite *ConnProxyProtocolTestSuite) TestWrite() {
+	value := []byte{1, 2, 3, 4, 5}
+	buf := &bytes.Buffer{}
+	bufReader := bufio.NewReader(buf)
+
+	suite.targetConnMock.
+		On("Write", mock.AnythingOfType("[]uint8")).
+		Return(28, nil).
+		Run(func(args mock.Arguments) {
+			arr := args.Get(0).([]byte)
+			buf.Write(arr)
+		})
+
+	_, err := suite.conn.Write(value)
+	suite.NoError(err)
+
+	header, err := proxyproto.Read(bufReader)
+	suite.NoError(err)
+
+	sourceAddr, destAddr, ok := header.TCPAddrs()
+	suite.True(ok)
+	suite.Equal(suite.sourceConnMock.RemoteAddr(), sourceAddr)
+	suite.Equal(suite.targetConnMock.RemoteAddr(), destAddr)
+
+	read, _ := io.ReadAll(bufReader)
+	suite.Equal(value, read)
+
+	_, err = suite.conn.Write(value)
+	suite.NoError(err)
+
+	read, _ = io.ReadAll(bufReader)
+	suite.Equal(value, read)
+}
+
+func (suite *ConnProxyProtocolTestSuite) TearDownTest() {
+	suite.sourceConnMock.AssertExpectations(suite.T())
+	suite.targetConnMock.AssertExpectations(suite.T())
+}
+
 func TestConnTraffic(t *testing.T) {
 	t.Parallel()
 	suite.Run(t, &ConnTrafficTestSuite{})
@@ -209,3 +300,8 @@ func TestConnRewind(t *testing.T) {
 	t.Parallel()
 	suite.Run(t, &ConnRewindTestSuite{})
 }
+
+func TestConnProxyProtocol(t *testing.T) {
+	t.Parallel()
+	suite.Run(t, &ConnProxyProtocolTestSuite{})
+}

mtglib/events.go

@@ -29,13 +29,13 @@ type EventStart struct {
 	RemoteIP net.IP
 }
 
-// EventConnectedToDC is emitted when mtg proxy has connected to a
+// EventConnectedToDC is emitted when mtg proxy has connected to a Telegram
-// Telegram server.
+// server.
 type EventConnectedToDC struct {
 	eventBase
 
-	// RemoteIP is an IP address of the Telegram server proxy has been
+	// RemoteIP is an IP address of the Telegram server proxy has been connected
-	// connected to.
+	// to.
 	RemoteIP net.IP
 
 	// DC is an index of the datacenter proxy has been connected to.
@@ -49,15 +49,15 @@ type EventTraffic struct {
 	// Traffic is a count of bytes which were transmitted.
 	Traffic uint
 
-	// IsRead defines if we _read_ or _write_ to connection. A rule of
+	// IsRead defines if we _read_ or _write_ to connection. A rule of thumb is
-	// thumb is simple: EventTraffic is bound to a remote connection. Not
+	// simple: EventTraffic is bound to a remote connection. Not to a client one,
-	// to a client one, but either to Telegram or front domain one.
+	// but either to Telegram or front domain one.
 	//
-	// In the case of Telegram, isRead means that we've fetched some bytes
+	// In the case of Telegram, isRead means that we've fetched some bytes from
-	// from Telegram to send it to a client.
+	// Telegram to send it to a client.
 	//
-	// In the case of the front domain, it means that we've fetched some
+	// In the case of the front domain, it means that we've fetched some bytes
-	// bytes from this domain to send it to a client.
+	// from this domain to send it to a client.
 	IsRead bool
 }
 
@@ -66,20 +66,20 @@ type EventFinish struct {
 	eventBase
 }
 
-// EventDomainFronting is emitted when we connect to a front domain
+// EventDomainFronting is emitted when we connect to a front domain instead of
-// instead of Telegram server.
+// Telegram server.
 type EventDomainFronting struct {
 	eventBase
 }
 
-// EventConcurrencyLimited is emitted when connection was declined
+// EventConcurrencyLimited is emitted when connection was declined because of
-// because of the concurrency limit of the worker pool.
+// the concurrency limit of the worker pool.
 type EventConcurrencyLimited struct {
 	eventBase
 }
 
-// EventIPBlocklisted is emitted when connection was declined because
+// EventIPBlocklisted is emitted when connection was declined because IP
-// IP address was found in IP blocklist.
+// address was found in IP blocklist.
 type EventIPBlocklisted struct {
 	eventBase
 

mtglib/init.go

@@ -1,20 +1,19 @@
 // mtglib defines a package with MTPROTO proxy.
 //
-// Since mtg itself is build as an example of how to work with mtglib,
+// Since mtg itself is build as an example of how to work with mtglib, it worth
-// it worth to telling a couple of words about a project organization.
+// to telling a couple of words about a project organization.
 //
-// A core object of the project is mtglib.Proxy. This is a proxy you
+// A core object of the project is [mtglib.Proxy]. This is a proxy you expect:
-// expect: that one which you configure, set to serve on a listener
+// that one which you configure, set to serve on a listener and/or shutdown on
-// and/or shutdown on application termination.
+// application termination.
 //
-// But it also has a core logic unrelated to Telegram per se: anti
+// But it also has a core logic unrelated to Telegram per se: anti replay
-// replay cache, network connectivity (who knows, maybe you want to have
+// cache, network connectivity (who knows, maybe you want to have a native
-// a native VMESS integration) and so on.
+// VMESS integration) and so on.
 //
-// You can supply such parts to a proxy with interfaces. The rest of
+// You can supply such parts to a proxy with interfaces. The rest of the
-// the packages in mtg define some default implementations of these
+// packages in mtg define some default implementations of these interfaces. But
-// interfaces. But if you want to integrate it with, let say, influxdb,
+// if you want to integrate it with, let say, influxdb, you can do it easily.
-// you can do it easily.
 package mtglib
 
 import (
@@ -28,42 +27,42 @@ import (
 )
 
 var (
-	// ErrSecretEmpty is returned if you are trying to create a proxy
+	// ErrSecretEmpty is returned if you are trying to create a proxy but do not
-	// but do not provide a secret.
+	// provide a secret.
 	ErrSecretEmpty = errors.New("secret is empty")
 
-	// ErrSecretInvalid is returned if you are trying to create a proxy
+	// ErrSecretInvalid is returned if you are trying to create a proxy but secret
-	// but secret value is invalid (no host or payload are zeroes).
+	// value is invalid (no host or payload are zeroes).
 	ErrSecretInvalid = errors.New("secret is invalid")
 
-	// ErrNetworkIsNotDefined is returned if you are trying to create a
+	// ErrNetworkIsNotDefined is returned if you are trying to create a proxy but
-	// proxy but network value is undefined.
+	// network value is undefined.
 	ErrNetworkIsNotDefined = errors.New("network is not defined")
 
-	// ErrAntiReplayCacheIsNotDefined is returned if you are trying to
+	// ErrAntiReplayCacheIsNotDefined is returned if you are trying to create a
-	// create a proxy but anti replay cache value is undefined.
+	// proxy but anti replay cache value is undefined.
 	ErrAntiReplayCacheIsNotDefined = errors.New("anti-replay cache is not defined")
 
-	// ErrIPBlocklistIsNotDefined is returned if you are trying to
+	// ErrIPBlocklistIsNotDefined is returned if you are trying to create a proxy
-	// create a proxy but ip blocklist instance is not defined.
+	// but ip blocklist instance is not defined.
 	ErrIPBlocklistIsNotDefined = errors.New("ip blocklist is not defined")
 
-	// ErrIPAllowlistIsNotDefined is returned if you are trying to
+	// ErrIPAllowlistIsNotDefined is returned if you are trying to create a proxy
-	// create a proxy but ip allowlist instance is not defined.
+	// but ip allowlist instance is not defined.
 	ErrIPAllowlistIsNotDefined = errors.New("ip allowlist is not defined")
 
-	// ErrEventStreamIsNotDefined is returned if you are trying to create a
+	// ErrEventStreamIsNotDefined is returned if you are trying to create a proxy
-	// proxy but event stream instance is not defined.
+	// but event stream instance is not defined.
 	ErrEventStreamIsNotDefined = errors.New("event stream is not defined")
 
-	// ErrLoggerIsNotDefined is returned if you are trying to
+	// ErrLoggerIsNotDefined is returned if you are trying to create a proxy but
-	// create a proxy but logger is not defined.
+	// logger is not defined.
 	ErrLoggerIsNotDefined = errors.New("logger is not defined")
 )
 
 const (
-	// DefaultConcurrency is a default max count of simultaneously
+	// DefaultConcurrency is a default max count of simultaneously connected
-	// connected clients.
+	// clients.
 	DefaultConcurrency = 4096
 
 	// DefaultBufferSize is a default size of a copy buffer.
@@ -71,31 +70,29 @@ const (
 	// Deprecated: this setting no longer makes any effect.
 	DefaultBufferSize = 16 * 1024 // 16 kib
 
-	// DefaultDomainFrontingPort is a default port (HTTPS) to connect to in
+	// DefaultDomainFrontingPort is a default port (HTTPS) to connect to in case
-	// case of probe-resistance activity.
+	// of probe-resistance activity.
 	DefaultDomainFrontingPort = 443
 
-	// DefaultIdleTimeout is a default timeout for closing a connection
+	// DefaultIdleTimeout is a default timeout for closing a connection in case of
-	// in case of idling.
+	// idling.
 	//
-	// Deprecated: no longer in use because of changed TCP relay
+	// Deprecated: no longer in use because of changed TCP relay algorithm.
-	// algorithm.
 	DefaultIdleTimeout = time.Minute
 
-	// DefaultTolerateTimeSkewness is a default timeout for time
+	// DefaultTolerateTimeSkewness is a default timeout for time skewness on a
-	// skewness on a faketls timeout verification.
+	// faketls timeout verification.
 	DefaultTolerateTimeSkewness = 3 * time.Second
 
-	// DefaultPreferIP is a default value for Telegram IP connectivity
+	// DefaultPreferIP is a default value for Telegram IP connectivity preference.
-	// preference.
 	DefaultPreferIP = "prefer-ipv6"
 
-	// SecretKeyLength defines a length of the secret bytes used
+	// SecretKeyLength defines a length of the secret bytes used by Telegram and a
-	// by Telegram and a proxy.
+	// proxy.
 	SecretKeyLength = 16
 
-	// ConnectionIDBytesLength defines a count of random bytes used to generate
+	// ConnectionIDBytesLength defines a count of random bytes used to generate a
-	// a stream/connection ids.
+	// stream/connection ids.
 	ConnectionIDBytesLength = 16
 
 	// TCPRelayReadTimeout defines a max time period between two consecuitive
@@ -104,81 +101,76 @@ const (
 	TCPRelayReadTimeout = 20 * time.Second
 )
 
-// Network defines a knowledge how to work with a network. It may sound
+// Network defines a knowledge how to work with a network. It may sound fun but
-// fun but it encapsulates all the knowledge how to properly establish
+// it encapsulates all the knowledge how to properly establish connections to
-// connections to remote hosts and configure HTTP clients.
+// remote hosts and configure HTTP clients.
 //
-// For example, if you want to use SOCKS5 proxy, you probably want to
+// For example, if you want to use SOCKS5 proxy, you probably want to have all
-// have all traffic routed to this proxy: telegram connections, http
+// traffic routed to this proxy: telegram connections, http requests and so on.
-// requests and so on. This knowledge is encapsulated into instances of
+// This knowledge is encapsulated into instances of such interface.
-// such interface.
 //
 // mtglib uses Network for:
-//
+//  1. Dialing to Telegram
-// 1. Dialing to Telegram
+//  2. Dialing to front domain
-//
+//  3. Doing HTTP requests (for example, for FireHOL ipblocklist).
-// 2. Dialing to front domain
-//
-// 3. Doing HTTP requests (for example, for FireHOL ipblocklist).
 type Network interface {
 	// Dial establishes context-free TCP connections.
 	Dial(network, address string) (essentials.Conn, error)
 
-	// DialContext dials using a context. This is a preferrable
+	// DialContext dials using a context. This is a preferrable way of
-	// way of establishing TCP connections.
+	// establishing TCP connections.
 	DialContext(ctx context.Context, network, address string) (essentials.Conn, error)
 
-	// MakeHTTPClient build an HTTP client with given dial function. If
+	// MakeHTTPClient build an HTTP client with given dial function. If nothing is
-	// nothing is provided, then DialContext of this interface is going
+	// provided, then DialContext of this interface is going to be used.
-	// to be used.
 	MakeHTTPClient(func(ctx context.Context, network, address string) (essentials.Conn, error)) *http.Client
 }
 
-// AntiReplayCache is an interface that is used to detect replay attacks
+// AntiReplayCache is an interface that is used to detect replay attacks based
-// based on some traffic fingerprints.
+// on some traffic fingerprints.
 //
-// Replay attacks are probe attacks whose main goal is to identify if
+// Replay attacks are probe attacks whose main goal is to identify if server
-// server software can be classified in some way. For example, if you
+// software can be classified in some way. For example, if you send some HTTP
-// send some HTTP request to a web server, then you can expect that this
+// request to a web server, then you can expect that this server will respond
-// server will respond with HTTP response back.
+// with HTTP response back.
 //
-// There is a problem though. Let's imagine, that connection is
+// There is a problem though. Let's imagine, that connection is encrypted.
-// encrypted. Let's imagine, that it is encrypted with some static key
+// Let's imagine, that it is encrypted with some static key like [ShadowSocks].
-// like ShadowSocks (https://shadowsocks.org/assets/whitepaper.pdf).
+// In that case, in theory, if you repeat the same bytes, you can get the same
-// In that case, in theory, if you repeat the same bytes, you can get
+// responses. Let's imagine, that you've cracked the key. then if you send the
-// the same responses. Let's imagine, that you've cracked the key. then
+// same bytes, you can decrypt a response and see its structure. Based on its
-// if you send the same bytes, you can decrypt a response and see its
+// structure you can identify if this server is SOCKS5, MTPROTO proxy etc.
-// structure. Based on its structure you can identify if this server is
-// SOCKS5, MTPROTO proxy etc.
 //
-// This is just one example, maybe not the best or not the most
+// This is just one example, maybe not the best or not the most relevant. In
-// relevant. In real life, different organizations use such replay
+// real life, different organizations use such replay attacks to perform some
-// attacks to perform some reverse engineering of the proxy, do some
+// reverse engineering of the proxy, do some statical analysis to identify
-// statical analysis to identify server software.
+// server software.
 //
-// There are many ways how to protect your proxy against them. One
+// There are many ways how to protect your proxy against them. One is domain
-// is domain fronting which is a core part of mtg. Another one is to
+// fronting which is a core part of mtg. Another one is to collect some
-// collect some 'handshake fingerprints' and forbid duplication.
+// 'handshake fingerprints' and forbid duplication.
 //
-// So, it one is sending the same byte flow right after you (or a couple
+// So, it one is sending the same byte flow right after you (or a couple of
-// of hours after), mtg should detect that and reject this connection
+// hours after), mtg should detect that and reject this connection (or redirect
-// (or redirect to fronting domain).
+// to fronting domain).
+//
+// [ShadowSocks]: https://shadowsocks.org/assets/whitepaper.pdf
 type AntiReplayCache interface {
-	// Seen before checks if this set of bytes was observed before or
+	// Seen before checks if this set of bytes was observed before or not. If it
-	// not. If it is required to store this information somewhere else,
+	// is required to store this information somewhere else, then it has to do
-	// then it has to do that.
+	// that.
 	SeenBefore(data []byte) bool
 }
 
 // IPBlocklist filters requests based on IP address.
 //
-// If this filter has an IP address, then mtg closes a request without
+// If this filter has an IP address, then mtg closes a request without reading
-// reading anything from a socket. It also does not give such request to
+// anything from a socket. It also does not give such request to a worker pool,
-// a worker pool, so in worst cases you can expect that you invoke this
+// so in worst cases you can expect that you invoke this object more frequent
-// object more frequent than defined proxy concurrency.
+// than defined proxy concurrency.
 type IPBlocklist interface {
-	// Contains checks if given IP address belongs to this blocklist If.
+	// Contains checks if given IP address belongs to this blocklist If. it is, a
-	// it is, a connection is terminated                               .
+	// connection is terminated .
 	Contains(net.IP) bool
 
 	// Run starts a background update procedure for a blocklist
@@ -188,40 +180,35 @@ type IPBlocklist interface {
 	Shutdown()
 }
 
-// Event is a data structure which is populated during mtg request
+// Event is a data structure which is populated during mtg request processing
-// processing lifecycle. Each request popluates many events:
+// lifecycle. Each request popluates many events:
+//  1. Client connected
+//  2. Request is finished
+//  3. Connection to Telegram server is established
 //
-// 1. Client connected
+// and so on. All these events are data structures but all of them must conform
-//
+// the same interface.
-// 2. Request is finished
-//
-// 3. Connection to Telegram server is established
-//
-// and so on. All these events are data structures but all of them
-// must conform the same interface.
 type Event interface {
-	// StreamID returns an identifier of the stream, connection,
+	// StreamID returns an identifier of the stream, connection, request, you name
-	// request, you name it. All events within the same stream returns
+	// it. All events within the same stream returns the same stream id.
-	// the same stream id.
 	StreamID() string
 
 	// Timestamp returns a timestamp when this event was generated.
 	Timestamp() time.Time
 }
 
-// EventStream is an abstraction that accepts a set of events produced
+// EventStream is an abstraction that accepts a set of events produced by mtg.
-// by mtg. Its main goal is to inject your logging or monitoring system.
+// Its main goal is to inject your logging or monitoring system.
 //
-// The idea is simple. When mtg works, it emits a set of events during
+// The idea is simple. When mtg works, it emits a set of events during a
-// a lifecycle of the requestor: EventStart, EventFinish etc. mtg is a
+// lifecycle of the requestor: EventStart, EventFinish etc. mtg is a producer
-// producer which puts these events into a stream. Responsibility of
+// which puts these events into a stream. Responsibility of the stream is to
-// the stream is to deliver this event to consumers/observers. There
+// deliver this event to consumers/observers. There might be many different
-// might be many different observers (for example, you want to have both
+// observers (for example, you want to have both statsd and prometheus), mtg
-// statsd and prometheus), mtg should know nothing about them.
+// should know nothing about them.
 type EventStream interface {
-	// Send delivers an event to observers. Given context has to be
+	// Send delivers an event to observers. Given context has to be respected. If
-	// respected. If the context is closed, all blocking operations should
+	// the context is closed, all blocking operations should be released ASAP.
-	// be released ASAP.
 	//
 	// It is possible that context is closed but the message is delivered.
 	// EventStream implementations should solve this issue somehow.
@@ -230,27 +217,26 @@ type EventStream interface {
 
 // Logger defines an interface of the logger used by mtglib.
 //
-// Each logger has a name. It is possible to stack names to organize
+// Each logger has a name. It is possible to stack names to organize poor-man
-// poor-man namespaces. Also, each logger must be able to bind
+// namespaces. Also, each logger must be able to bind parameters to avoid
-// parameters to avoid pushing them all the time.
+// pushing them all the time.
 //
 // Example
 //
-//     logger := SomeLogger{}
+//	logger := SomeLogger{} logger = logger.BindStr("ip", net.IP{127, 0, 0, 1})
-//     logger = logger.BindStr("ip", net.IP{127, 0, 0, 1})
+//	logger.Info("Hello")
-//     logger.Info("Hello")
 //
-// In that case, ip is bound as a parameter. It is a great idea to
+// In that case, ip is bound as a parameter. It is a great idea to put this
-// put this parameter somewhere in a log message.
+// parameter somewhere in a log message.
 //
-//     logger1 = logger.BindStr("param1", "11")
+//	logger1 = logger.BindStr("param1", "11") logger2 = logger.BindInt("param2",
-//     logger2 = logger.BindInt("param2", 11)
+//	11)
 //
 // logger1 should see no param2 and vice versa, logger2 should not see param1
 // If you attach a parameter to a logger, parents should not know about that.
 type Logger interface {
-	// Named returns a new logger with a bound name. Name chaining is
+	// Named returns a new logger with a bound name. Name chaining is allowed and
-	// allowed and appreciated.
+	// appreciated.
 	Named(name string) Logger
 
 	// BindInt binds new integer parameter to a new logger instance.
@@ -263,27 +249,26 @@ type Logger interface {
 	BindJSON(name, value string) Logger
 
 	// Printf is to support log.Logger behavior.
-	Printf(format string, args ...interface{})
+	Printf(format string, args ...any)
 
 	// Info puts a message about some normal situation.
 	Info(msg string)
 
-	// InfoError puts a message about some normal situation but this
+	// InfoError puts a message about some normal situation but this situation is
-	// situation is related to a given error.
+	// related to a given error.
 	InfoError(msg string, err error)
 
-	// Warning puts a message about some extraordinary situation
+	// Warning puts a message about some extraordinary situation worth to look at.
-	// worth to look at.
 	Warning(msg string)
 
-	// WarningError puts a message about some extraordinary situation
+	// WarningError puts a message about some extraordinary situation worth to
-	// worth to look at. This situation is related to a given error.
+	// look at. This situation is related to a given error.
 	WarningError(msg string, err error)
 
 	// Debug puts a message useful for debugging only.
 	Debug(msg string)
 
-	// Debug puts a message useful for debugging only. This message is
+	// Debug puts a message useful for debugging only. This message is related to
-	// related to a given error.
+	// a given error.
 	DebugError(msg string, err error)
 }

mtglib/init_internal_test.go

@@ -8,17 +8,17 @@ import (
 
 type NoopLogger struct{}
 
-func (n NoopLogger) Named(_ string) Logger             { return n }
+func (n NoopLogger) Named(_ string) Logger          { return n }
-func (n NoopLogger) BindInt(_ string, _ int) Logger    { return n }
+func (n NoopLogger) BindInt(_ string, _ int) Logger { return n }
-func (n NoopLogger) BindStr(_, _ string) Logger        { return n }
+func (n NoopLogger) BindStr(_, _ string) Logger     { return n }
-func (n NoopLogger) BindJSON(_, _ string) Logger       { return n }
+func (n NoopLogger) BindJSON(_, _ string) Logger    { return n }
-func (n NoopLogger) Printf(_ string, _ ...interface{}) {}
+func (n NoopLogger) Printf(_ string, _ ...any)      {}
-func (n NoopLogger) Info(_ string)                     {}
+func (n NoopLogger) Info(_ string)                  {}
-func (n NoopLogger) Warning(_ string)                  {}
+func (n NoopLogger) Warning(_ string)               {}
-func (n NoopLogger) Debug(_ string)                    {}
+func (n NoopLogger) Debug(_ string)                 {}
-func (n NoopLogger) InfoError(_ string, _ error)       {}
+func (n NoopLogger) InfoError(_ string, _ error)    {}
-func (n NoopLogger) WarningError(_ string, _ error)    {}
+func (n NoopLogger) WarningError(_ string, _ error) {}
-func (n NoopLogger) DebugError(_ string, _ error)      {}
+func (n NoopLogger) DebugError(_ string, _ error)   {}
 
 type EventStreamMock struct {
 	mock.Mock

mtglib/internal/dc/addr.go

@@ -0,0 +1,17 @@
+package dc
+
+import (
+	"fmt"
+
+	"github.com/9seconds/mtg/v2/mtglib/internal/obfuscation"
+)
+
+type Addr struct {
+	Network    string
+	Address    string
+	Obfuscator obfuscation.Obfuscator
+}
+
+func (d Addr) String() string {
+	return fmt.Sprintf("addr=%s, secret=%v", d.Address, d.Obfuscator.Secret)
+}

mtglib/internal/dc/addr_set.go

@@ -0,0 +1,33 @@
+package dc
+
+import "math/rand/v2"
+
+type dcAddrSet struct {
+	v4 map[int][]Addr
+	v6 map[int][]Addr
+}
+
+func (d dcAddrSet) getV4(dc int) []Addr {
+	if d.v4 == nil {
+		return nil
+	}
+	return d.get(d.v4[dc])
+}
+
+func (d dcAddrSet) getV6(dc int) []Addr {
+	if d.v6 == nil {
+		return nil
+	}
+	return d.get(d.v6[dc])
+}
+
+func (d dcAddrSet) get(addrs []Addr) []Addr {
+	otherSet := make([]Addr, 0, len(addrs))
+	otherSet = append(otherSet, addrs...)
+
+	rand.Shuffle(len(otherSet), func(i, j int) {
+		otherSet[i], otherSet[j] = otherSet[j], otherSet[i]
+	})
+
+	return otherSet
+}

mtglib/internal/dc/init.go

@@ -0,0 +1,84 @@
+package dc
+
+import (
+	"context"
+	"time"
+)
+
+type preferIP uint8
+
+const (
+	preferIPOnlyIPv4 preferIP = iota
+	preferIPOnlyIPv6
+	preferIPPreferIPv4
+	preferIPPreferIPv6
+)
+
+const (
+	// Default DC to connect to if not sure.
+	DefaultDC = 2
+
+	// How often should we request updates from
+	// https://core.telegram.org/getProxyConfig
+	PublicConfigUpdateEach  = time.Hour
+	PublicConfigUpdateURLv4 = "https://core.telegram.org/getProxyConfig"
+	PublicConfigUpdateURLv6 = "https://core.telegram.org/getProxyConfigV6"
+
+	// How often should we extract hosts from Telegram using help.getConfig
+	// method.
+	OwnConfigUpdateEach = time.Hour
+)
+
+type Logger interface {
+	Info(msg string)
+	WarningError(msg string, err error)
+}
+
+type Updater interface {
+	Run(ctx context.Context)
+}
+
+// https://github.com/telegramdesktop/tdesktop/blob/master/Telegram/SourceFiles/mtproto/mtproto_dc_options.cpp#L30
+var defaultDCAddrSet = dcAddrSet{
+	v4: map[int][]Addr{
+		1: {
+			{Network: "tcp4", Address: "149.154.175.50:443"},
+		},
+		2: {
+			{Network: "tcp4", Address: "149.154.167.51:443"},
+			{Network: "tcp4", Address: "95.161.76.100:443"},
+		},
+		3: {
+			{Network: "tcp4", Address: "149.154.175.100:443"},
+		},
+		4: {
+			{Network: "tcp4", Address: "149.154.167.91:443"},
+		},
+		5: {
+			{Network: "tcp4", Address: "149.154.171.5:443"},
+		},
+		203: {
+			{Network: "tcp4", Address: "91.105.192.100:443"},
+		},
+	},
+	v6: map[int][]Addr{
+		1: {
+			{Network: "tcp6", Address: "[2001:b28:f23d:f001::a]:443"},
+		},
+		2: {
+			{Network: "tcp6", Address: "[2001:67c:04e8:f002::a]:443"},
+		},
+		3: {
+			{Network: "tcp6", Address: "[2001:b28:f23d:f003::a]:443"},
+		},
+		4: {
+			{Network: "tcp6", Address: "[2001:67c:04e8:f004::a]:443"},
+		},
+		5: {
+			{Network: "tcp6", Address: "[2001:b28:f23f:f005::a]:443"},
+		},
+		203: {
+			{Network: "tcp6", Address: "[2a0a:f280:0203:000a:5000:0000:0000:0100]:443"},
+		},
+	},
+}

mtglib/internal/dc/init_test.go

@@ -0,0 +1,43 @@
+package dc
+
+import (
+	"context"
+
+	"github.com/stretchr/testify/mock"
+	"github.com/stretchr/testify/suite"
+)
+
+type LoggerMock struct {
+	mock.Mock
+}
+
+func (m *LoggerMock) Info(msg string) {
+	m.Called(msg)
+}
+
+func (m *LoggerMock) WarningError(msg string, err error) {
+	m.Called(msg, err)
+}
+
+type UpdaterTestSuiteBase struct {
+	suite.Suite
+
+	ctx        context.Context
+	ctxCancel  context.CancelFunc
+	loggerMock *LoggerMock
+}
+
+func (s *UpdaterTestSuiteBase) SetupTest() {
+	ctx, cancel := context.WithCancel(context.Background())
+
+	s.loggerMock = &LoggerMock{}
+	s.loggerMock.On("Info", mock.AnythingOfType("string"))
+	s.loggerMock.On("WarningError", mock.AnythingOfType("string"), mock.Anything)
+
+	s.ctx = ctx
+	s.ctxCancel = cancel
+}
+
+func (s *UpdaterTestSuiteBase) TearDownTest() {
+	s.ctxCancel()
+}

mtglib/internal/dc/public_config_updater.go

@@ -0,0 +1,93 @@
+package dc
+
+import (
+	"bufio"
+	"context"
+	"fmt"
+	"io"
+	"net/http"
+	"regexp"
+	"strconv"
+)
+
+var publicConfigRe = regexp.MustCompile(`^\s*proxy_for\s+(\d+)\s+(\S+?)?;\s*$`)
+
+type PublicConfigUpdater struct {
+	updater
+
+	http *http.Client
+	tg   *Telegram
+}
+
+func (p *PublicConfigUpdater) Run(ctx context.Context, url, network string) {
+	p.run(ctx, func() error {
+		req, err := http.NewRequestWithContext(ctx, http.MethodGet, url, nil)
+		if err != nil {
+			panic(err)
+		}
+
+		resp, err := p.http.Do(req)
+		if err != nil {
+			if resp != nil {
+				io.Copy(io.Discard, resp.Body) //nolint: errcheck
+				resp.Body.Close()              //nolint: errcheck
+			}
+			return fmt.Errorf("cannot fetch url %s: %w", url, err)
+		}
+
+		if resp.StatusCode >= http.StatusBadRequest {
+			return fmt.Errorf("unexpected status code from %s: %d", url, resp.StatusCode)
+		}
+
+		scanner := bufio.NewScanner(resp.Body)
+		addrs := map[int][]Addr{}
+
+		for scanner.Scan() {
+			matches := publicConfigRe.FindStringSubmatch(scanner.Text())
+			if len(matches) != 3 {
+				continue
+			}
+
+			dc, err := strconv.Atoi(matches[1])
+			if err != nil {
+				continue
+			}
+
+			switch dc {
+			// this is a list of DC we currently support. Other are ignored.
+			case 203: // CDN DC
+				p.logger.Info(fmt.Sprintf("found %s address for DC %d", matches[2], dc))
+				addrs[dc] = append(addrs[dc], Addr{
+					Network: network,
+					Address: matches[2],
+				})
+			}
+		}
+
+		if err := scanner.Err(); err != nil {
+			return fmt.Errorf("cannot read response body from %s: %w", url, err)
+		}
+
+		p.tg.lock.Lock()
+		defer p.tg.lock.Unlock()
+
+		if network == "tcp4" {
+			p.tg.view.publicConfigs.v4 = addrs
+		} else {
+			p.tg.view.publicConfigs.v6 = addrs
+		}
+
+		return nil
+	})
+}
+
+func NewPublicConfigUpdater(tg *Telegram, logger Logger, client *http.Client) *PublicConfigUpdater {
+	return &PublicConfigUpdater{
+		updater: updater{
+			logger: logger,
+			period: PublicConfigUpdateEach,
+		},
+		http: client,
+		tg:   tg,
+	}
+}

mtglib/internal/dc/public_config_updater_test.go

@@ -0,0 +1,113 @@
+package dc
+
+import (
+	"net/http"
+	"net/http/httptest"
+	"sync"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/require"
+	"github.com/stretchr/testify/suite"
+)
+
+type PublicConfigUpdaterTestSuite struct {
+	UpdaterTestSuiteBase
+
+	u               *PublicConfigUpdater
+	lock            sync.Mutex
+	srv             *httptest.Server
+	responseHandler func(w http.ResponseWriter)
+}
+
+func (s *PublicConfigUpdaterTestSuite) SetupSuite() {
+	s.srv = httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		s.lock.Lock()
+		s.responseHandler(w)
+		s.lock.Unlock()
+	}))
+}
+
+func (s *PublicConfigUpdaterTestSuite) TearDownSuite() {
+	s.srv.Close()
+}
+
+func (s *PublicConfigUpdaterTestSuite) SetupTest() {
+	s.UpdaterTestSuiteBase.SetupTest()
+
+	tg, err := New("prefer-ipv4")
+	require.NoError(s.T(), err)
+
+	s.u = NewPublicConfigUpdater(tg, s.loggerMock, s.srv.Client())
+}
+
+func (s *PublicConfigUpdaterTestSuite) Test502StatusCode() {
+	s.responseHandler = func(w http.ResponseWriter) {
+		w.WriteHeader(http.StatusBadGateway)
+	}
+	s.u.Run(s.ctx, s.srv.URL, "tcp4")
+
+	time.Sleep(100 * time.Millisecond)
+	s.ctxCancel()
+	s.u.Wait()
+
+	s.Len(s.u.tg.view.publicConfigs.v4, 0)
+}
+
+func (s *PublicConfigUpdaterTestSuite) TestEmptyFile() {
+	s.responseHandler = func(w http.ResponseWriter) {
+		w.WriteHeader(http.StatusOK)
+	}
+	s.u.Run(s.ctx, s.srv.URL, "tcp4")
+
+	time.Sleep(100 * time.Millisecond)
+	s.ctxCancel()
+	s.u.Wait()
+
+	s.Len(s.u.tg.view.publicConfigs.v4, 0)
+}
+
+func (s *PublicConfigUpdaterTestSuite) TestGarbage() {
+	result := `
+proxy_for -1 -1;
+proxy_for 100 100.10.0.0:3333;
+lala 0 0
+`
+
+	s.responseHandler = func(w http.ResponseWriter) {
+		w.WriteHeader(http.StatusOK)
+		w.Write([]byte(result)) //nolint: errcheck
+	}
+	s.u.Run(s.ctx, s.srv.URL, "tcp4")
+
+	time.Sleep(100 * time.Millisecond)
+	s.ctxCancel()
+	s.u.Wait()
+
+	s.Len(s.u.tg.view.publicConfigs.v4, 0)
+}
+
+func (s *PublicConfigUpdaterTestSuite) TestOk() {
+	result := `
+proxy_for 203 100.10.0.0:3333;
+proxy_for -100 101.10.0.0:3333;
+`
+
+	s.responseHandler = func(w http.ResponseWriter) {
+		w.WriteHeader(http.StatusOK)
+		w.Write([]byte(result)) //nolint: errcheck
+	}
+	s.u.Run(s.ctx, s.srv.URL, "tcp4")
+
+	time.Sleep(100 * time.Millisecond)
+	s.ctxCancel()
+	s.u.Wait()
+
+	s.Len(s.u.tg.view.publicConfigs.v4, 1)
+	s.Len(s.u.tg.view.publicConfigs.v4[203], 1)
+	s.Equal("100.10.0.0:3333", s.u.tg.view.publicConfigs.v4[203][0].Address)
+}
+
+func TestPublicConfigUpdater(t *testing.T) {
+	suite.Run(t, &PublicConfigUpdaterTestSuite{})
+}

mtglib/internal/dc/telegram.go

@@ -0,0 +1,50 @@
+package dc
+
+import (
+	"fmt"
+	"strings"
+	"sync"
+)
+
+type Telegram struct {
+	lock     sync.RWMutex
+	view     dcView
+	preferIP preferIP
+}
+
+func (t *Telegram) GetAddresses(dc int) []Addr {
+	t.lock.RLock()
+	defer t.lock.RUnlock()
+
+	switch t.preferIP {
+	case preferIPOnlyIPv4:
+		return t.view.getV4(dc)
+	case preferIPOnlyIPv6:
+		return t.view.getV4(dc)
+	case preferIPPreferIPv4:
+		return append(t.view.getV4(dc), t.view.getV6(dc)...)
+	}
+
+	return append(t.view.getV6(dc), t.view.getV4(dc)...)
+}
+
+func New(ipPreference string) (*Telegram, error) {
+	var pref preferIP
+
+	switch strings.ToLower(ipPreference) {
+	case "prefer-ipv4":
+		pref = preferIPPreferIPv4
+	case "prefer-ipv6":
+		pref = preferIPPreferIPv6
+	case "only-ipv4":
+		pref = preferIPOnlyIPv4
+	case "only-ipv6":
+		pref = preferIPOnlyIPv6
+	default:
+		return nil, fmt.Errorf("unknown ip preference %s", ipPreference)
+	}
+
+	return &Telegram{
+		preferIP: pref,
+	}, nil
+}

mtglib/internal/dc/updater.go

@@ -0,0 +1,47 @@
+package dc
+
+import (
+	"context"
+	"sync"
+	"time"
+)
+
+type updater struct {
+	wg     sync.WaitGroup
+	logger Logger
+	period time.Duration
+}
+
+func (u *updater) Wait() {
+	u.wg.Wait()
+}
+
+func (u *updater) run(ctx context.Context, callback func() error) {
+	u.wg.Go(func() {
+		ticker := time.NewTicker(u.period)
+
+		defer func() {
+			ticker.Stop()
+
+			select {
+			case <-ticker.C:
+			default:
+			}
+		}()
+
+		for {
+			u.logger.Info("start update")
+			if err := callback(); err != nil {
+				u.logger.WarningError("cannot update", err)
+			}
+			u.logger.Info("updated")
+
+			select {
+			case <-ctx.Done():
+				u.logger.Info("stop updating")
+				return
+			case <-ticker.C:
+			}
+		}
+	})
+}

mtglib/internal/dc/updater_test.go

@@ -0,0 +1,55 @@
+package dc
+
+import (
+	"sync"
+	"testing"
+	"time"
+
+	"github.com/stretchr/testify/suite"
+)
+
+type UpdaterTestSuite struct {
+	UpdaterTestSuiteBase
+
+	u updater
+}
+
+func (s *UpdaterTestSuite) SetupTest() {
+	s.UpdaterTestSuiteBase.SetupTest()
+	s.u = updater{
+		logger: s.loggerMock,
+		period: 100 * time.Millisecond,
+	}
+}
+
+func (s *UpdaterTestSuite) TestPeriodicUpdates() {
+	ticker := time.NewTicker(10 * time.Millisecond)
+	defer ticker.Stop()
+
+	lock := &sync.Mutex{}
+	collected := []time.Time{}
+
+	go s.u.run(s.ctx, func() error {
+		select {
+		case <-s.ctx.Done():
+		case value := <-ticker.C:
+			lock.Lock()
+			collected = append(collected, value)
+			lock.Unlock()
+		}
+
+		return nil
+	})
+
+	s.Eventually(func() bool {
+		lock.Lock()
+		defer lock.Unlock()
+
+		return len(collected) == 3
+	}, time.Second, 10*time.Millisecond)
+}
+
+func TestUpdater(t *testing.T) {
+	t.Parallel()
+	suite.Run(t, &UpdaterTestSuite{})
+}

mtglib/internal/dc/view.go

@@ -0,0 +1,19 @@
+package dc
+
+type dcView struct {
+	publicConfigs dcAddrSet
+}
+
+func (d dcView) getV4(dc int) []Addr {
+	addrs := d.publicConfigs.getV4(dc)
+	addrs = append(addrs, defaultDCAddrSet.getV4(dc)...)
+
+	return addrs
+}
+
+func (d dcView) getV6(dc int) []Addr {
+	addrs := d.publicConfigs.getV6(dc)
+	addrs = append(addrs, defaultDCAddrSet.getV6(dc)...)
+
+	return addrs
+}

mtglib/internal/dc/view_test.go

@@ -0,0 +1,81 @@
+package dc
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/suite"
+)
+
+type ViewTestSuite struct {
+	suite.Suite
+
+	view dcView
+}
+
+func (suite *ViewTestSuite) SetupSuite() {
+	suite.view = dcView{
+		publicConfigs: dcAddrSet{
+			v4: map[int][]Addr{
+				111: {
+					{Network: "tcp4", Address: "127.0.0.1:443"},
+				},
+				203: {
+					{Network: "tcp4", Address: "127.0.0.2:443"},
+				},
+			},
+			v6: map[int][]Addr{
+				203: {
+					{Network: "tcp6", Address: "xxx"},
+				},
+			},
+		},
+	}
+}
+
+func (suite *ViewTestSuite) TestGetV4() {
+	testData := map[int][]Addr{
+		111: {
+			{Network: "tcp4", Address: "127.0.0.1:443"},
+		},
+		203: {
+			{Network: "tcp4", Address: "127.0.0.2:443"},
+			{Network: "tcp4", Address: "91.105.192.100:443"},
+		},
+		2: {
+			{Network: "tcp4", Address: "149.154.167.51:443"},
+			{Network: "tcp4", Address: "95.161.76.100:443"},
+		},
+	}
+
+	for dc, addresses := range testData {
+		suite.T().Run(fmt.Sprintf("dc%d", dc), func(t *testing.T) {
+			assert.ElementsMatch(t, addresses, suite.view.getV4(dc))
+		})
+	}
+}
+
+func (suite *ViewTestSuite) TestGetV6() {
+	testData := map[int][]Addr{
+		111: {},
+		203: {
+			{Network: "tcp6", Address: "xxx"},
+			{Network: "tcp6", Address: "[2a0a:f280:0203:000a:5000:0000:0000:0100]:443"},
+		},
+		1: {
+			{Network: "tcp6", Address: "[2001:b28:f23d:f001::a]:443"},
+		},
+	}
+
+	for dc, addresses := range testData {
+		suite.T().Run(fmt.Sprintf("dc%d", dc), func(t *testing.T) {
+			assert.ElementsMatch(t, addresses, suite.view.getV6(dc))
+		})
+	}
+}
+
+func TestView(t *testing.T) {
+	t.Parallel()
+	suite.Run(t, &ViewTestSuite{})
+}

mtglib/internal/faketls/client_hello.go

@@ -56,7 +56,7 @@ func ParseClientHello(secret, handshake []byte) (ClientHello, error) {
 	if len(handshake)-4 != int(handshakeLength) {
 		return hello,
 			fmt.Errorf("incorrect handshake size. manifested=%d, real=%d",
-				handshakeLength, len(handshake)-4) // nolint: gomnd
+				handshakeLength, len(handshake)-4)
 	}
 
 	copy(hello.Random[:], handshake[ClientHelloRandomOffset:])
@@ -72,11 +72,11 @@ func ParseClientHello(secret, handshake []byte) (ClientHello, error) {
 	// mac is calculated for the whole record, not only
 	// for the payload part
 	mac := hmac.New(sha256.New, secret)
-	rec.Dump(mac) // nolint: errcheck
+	rec.Dump(mac) //nolint: errcheck
 
 	computedRandom := mac.Sum(nil)
 
-	for i := 0; i < RandomLen; i++ {
+	for i := range RandomLen {
 		computedRandom[i] ^= hello.Random[i]
 	}
 
@@ -100,7 +100,7 @@ func parseSessionID(hello *ClientHello, handshake []byte) {
 }
 
 func parseCipherSuite(hello *ClientHello, handshake []byte) {
-	cipherSuiteOffset := ClientHelloSessionIDOffset + len(hello.SessionID) + 3 // nolint: gomnd
+	cipherSuiteOffset := ClientHelloSessionIDOffset + len(hello.SessionID) + 3
 	hello.CipherSuite = binary.BigEndian.Uint16(handshake[cipherSuiteOffset : cipherSuiteOffset+2])
 }
 

mtglib/internal/faketls/conn.go

@@ -3,7 +3,7 @@ package faketls
 import (
 	"bytes"
 	"fmt"
-	"math/rand"
+	"math/rand/v2"
 
 	"github.com/9seconds/mtg/v2/essentials"
 	"github.com/9seconds/mtg/v2/mtglib/internal/faketls/record"
@@ -25,14 +25,14 @@ func (c *Conn) Read(p []byte) (int, error) {
 
 	for {
 		if err := rec.Read(c.Conn); err != nil {
-			return 0, err // nolint: wrapcheck
+			return 0, err //nolint: wrapcheck
 		}
 
-		switch rec.Type { // nolint: exhaustive
+		switch rec.Type { //nolint: exhaustive
 		case record.TypeApplicationData:
-			rec.Payload.WriteTo(&c.readBuffer) // nolint: errcheck
+			rec.Payload.WriteTo(&c.readBuffer) //nolint: errcheck
 
-			return c.readBuffer.Read(p) // nolint: wrapcheck
+			return c.readBuffer.Read(p) //nolint: wrapcheck
 		case record.TypeChangeCipherSpec:
 		default:
 			return 0, fmt.Errorf("unsupported record type %v", rec.Type)
@@ -47,27 +47,26 @@ func (c *Conn) Write(p []byte) (int, error) {
 	rec.Type = record.TypeApplicationData
 	rec.Version = record.Version12
 
-	sendBuffer := acquireBytesBuffer()
+	written := 0
-	defer releaseBytesBuffer(sendBuffer)
-
-	lenP := len(p)
 
 	for len(p) > 0 {
-		chunkSize := rand.Intn(record.TLSMaxRecordSize)
+		chunkSize := rand.IntN(record.TLSMaxRecordSize)
 		if chunkSize > len(p) || chunkSize == 0 {
 			chunkSize = len(p)
 		}
 
 		rec.Payload.Reset()
 		rec.Payload.Write(p[:chunkSize])
-		rec.Dump(sendBuffer) // nolint: errcheck
+
+		err := rec.Dump(c.Conn)
+		written += chunkSize
+
+		if err != nil {
+			return written, err
+		}
 
 		p = p[chunkSize:]
 	}
 
-	if _, err := c.Conn.Write(sendBuffer.Bytes()); err != nil {
+	return written, nil
-		return 0, err // nolint: wrapcheck
-	}
-
-	return lenP, nil
 }

mtglib/internal/faketls/conn_test.go

@@ -2,9 +2,9 @@ package faketls_test
 
 import (
 	"bytes"
+	"crypto/rand"
 	"errors"
 	"io"
-	"math/rand"
 	"testing"
 
 	"github.com/9seconds/mtg/v2/internal/testlib"
@@ -24,13 +24,13 @@ type ConnMock struct {
 func (m *ConnMock) Read(p []byte) (int, error) {
 	m.Called(p)
 
-	return m.readBuffer.Read(p) // nolint: wrapcheck
+	return m.readBuffer.Read(p) //nolint: wrapcheck
 }
 
 func (m *ConnMock) Write(p []byte) (int, error) {
 	m.Called(p)
 
-	return m.writeBuffer.Write(p) // nolint: wrapcheck
+	return m.writeBuffer.Write(p) //nolint: wrapcheck
 }
 
 type ConnTestSuite struct {
@@ -61,14 +61,14 @@ func (suite *ConnTestSuite) TestRead() {
 	rec.Version = record.Version12
 
 	rec.Payload.WriteByte(0x01)
-	rec.Dump(&suite.connMock.readBuffer) // nolint: errcheck
+	rec.Dump(&suite.connMock.readBuffer) //nolint: errcheck
 	rec.Reset()
 
 	rec.Type = record.TypeApplicationData
 	rec.Version = record.Version12
 
 	rec.Payload.Write([]byte{1, 2, 3, 4, 5, 6, 7, 8, 9, 10})
-	rec.Dump(&suite.connMock.readBuffer) // nolint: errcheck
+	rec.Dump(&suite.connMock.readBuffer) //nolint: errcheck
 
 	resultBuffer := &bytes.Buffer{}
 	buf := make([]byte, 2)
@@ -95,14 +95,14 @@ func (suite *ConnTestSuite) TestReadUnexpected() {
 	rec.Version = record.Version12
 
 	rec.Payload.WriteByte(0x01)
-	rec.Dump(&suite.connMock.readBuffer) // nolint: errcheck
+	rec.Dump(&suite.connMock.readBuffer) //nolint: errcheck
 	rec.Reset()
 
 	rec.Type = record.TypeHandshake
 	rec.Version = record.Version12
 
 	rec.Payload.Write([]byte{1, 2, 3, 4, 5, 6, 7, 8, 9, 10})
-	rec.Dump(&suite.connMock.readBuffer) // nolint: errcheck
+	rec.Dump(&suite.connMock.readBuffer) //nolint: errcheck
 
 	buf := make([]byte, 2)
 
@@ -123,7 +123,7 @@ func (suite *ConnTestSuite) TestWrite() {
 	suite.connMock.On("Write", mock.Anything).Return(0, nil)
 
 	dataToRec := make([]byte, record.TLSMaxRecordSize*2)
-	rand.Read(dataToRec)
+	rand.Read(dataToRec) //nolint: staticcheck, errcheck
 
 	n, err := suite.c.Write(dataToRec)
 	suite.NoError(err)
@@ -141,7 +141,7 @@ func (suite *ConnTestSuite) TestWrite() {
 
 		suite.Equal(record.TypeApplicationData, rec.Type)
 		suite.Equal(record.Version12, rec.Version)
-		rec.Payload.WriteTo(buf) // nolint: errcheck
+		rec.Payload.WriteTo(buf) //nolint: errcheck
 	}
 
 	suite.Equal(dataToRec, buf.Bytes())

mtglib/internal/faketls/pools.go

@@ -1,21 +0,0 @@
-package faketls
-
-import (
-	"bytes"
-	"sync"
-)
-
-var bytesBufferPool = sync.Pool{
-	New: func() interface{} {
-		return &bytes.Buffer{}
-	},
-}
-
-func acquireBytesBuffer() *bytes.Buffer {
-	return bytesBufferPool.Get().(*bytes.Buffer) // nolint: forcetypeassert
-}
-
-func releaseBytesBuffer(b *bytes.Buffer) {
-	b.Reset()
-	bytesBufferPool.Put(b)
-}

mtglib/internal/faketls/record/pools.go

@@ -5,13 +5,13 @@ import (
 )
 
 var recordPool = sync.Pool{
-	New: func() interface{} {
+	New: func() any {
 		return &Record{}
 	},
 }
 
 func AcquireRecord() *Record {
-	return recordPool.Get().(*Record) // nolint: forcetypeassert
+	return recordPool.Get().(*Record) //nolint: forcetypeassert
 }
 
 func ReleaseRecord(r *Record) {

mtglib/internal/faketls/welcome.go

@@ -1,20 +1,20 @@
 package faketls
 
 import (
+	"bytes"
 	"crypto/hmac"
 	"crypto/rand"
 	"crypto/sha256"
 	"encoding/binary"
 	"io"
-	mrand "math/rand"
+	mrand "math/rand/v2"
 
 	"github.com/9seconds/mtg/v2/mtglib/internal/faketls/record"
 	"golang.org/x/crypto/curve25519"
 )
 
 func SendWelcomePacket(writer io.Writer, secret []byte, clientHello ClientHello) error {
-	buf := acquireBytesBuffer()
+	buf := &bytes.Buffer{}
-	defer releaseBytesBuffer(buf)
 
 	rec := record.AcquireRecord()
 	defer record.ReleaseRecord(rec)
@@ -23,24 +23,24 @@ func SendWelcomePacket(writer io.Writer, secret []byte, clientHello ClientHello)
 	rec.Version = record.Version12
 
 	generateServerHello(&rec.Payload, clientHello)
-	rec.Dump(buf) // nolint: errcheck
+	rec.Dump(buf) //nolint: errcheck
 	rec.Reset()
 
 	rec.Type = record.TypeChangeCipherSpec
 	rec.Version = record.Version12
 	rec.Payload.WriteByte(ChangeCipherValue)
 
-	rec.Dump(buf) // nolint: errcheck
+	rec.Dump(buf) //nolint: errcheck
 	rec.Reset()
 
 	rec.Type = record.TypeApplicationData
 	rec.Version = record.Version12
 
-	if _, err := io.CopyN(&rec.Payload, rand.Reader, int64(1024+mrand.Intn(3092))); err != nil { // nolint: gomnd
+	if _, err := io.CopyN(&rec.Payload, rand.Reader, int64(1024+mrand.IntN(3092))); err != nil {
 		panic(err)
 	}
 
-	rec.Dump(buf) // nolint: errcheck
+	rec.Dump(buf) //nolint: errcheck
 
 	packet := buf.Bytes()
 	mac := hmac.New(sha256.New, secret)
@@ -51,15 +51,14 @@ func SendWelcomePacket(writer io.Writer, secret []byte, clientHello ClientHello)
 	copy(packet[WelcomePacketRandomOffset:], mac.Sum(nil))
 
 	if _, err := writer.Write(packet); err != nil {
-		return err // nolint: wrapcheck
+		return err //nolint: wrapcheck
 	}
 
 	return nil
 }
 
 func generateServerHello(writer io.Writer, clientHello ClientHello) {
-	bodyBuf := acquireBytesBuffer()
+	bodyBuf := &bytes.Buffer{}
-	defer releaseBytesBuffer(bodyBuf)
 
 	sliceBuf := [2]byte{}
 	digest := [RandomLen]byte{}
@@ -87,6 +86,6 @@ func generateServerHello(writer io.Writer, clientHello ClientHello) {
 	binary.BigEndian.PutUint32(header[:], uint32(bodyBuf.Len()))
 	header[0] = HandshakeTypeServer
 
-	writer.Write(header[:]) // nolint: errcheck
+	writer.Write(header[:]) //nolint: errcheck
-	bodyBuf.WriteTo(writer) // nolint: errcheck
+	bodyBuf.WriteTo(writer) //nolint: errcheck
 }

mtglib/internal/faketls/welcome_test.go

@@ -3,8 +3,8 @@ package faketls_test
 import (
 	"bytes"
 	"crypto/hmac"
+	"crypto/rand"
 	"crypto/sha256"
-	"math/rand"
 	"testing"
 	"time"
 
@@ -30,10 +30,10 @@ func (suite *WelcomeTestSuite) SetupTest() {
 		SessionID:   make([]byte, 32),
 	}
 
-	_, err := rand.Read(suite.h.SessionID)
+	_, err := rand.Read(suite.h.SessionID) //nolint: staticcheck
 	suite.NoError(err)
 
-	_, err = rand.Read(suite.h.Random[:])
+	_, err = rand.Read(suite.h.Random[:]) //nolint: staticcheck
 	suite.NoError(err)
 
 	suite.buf = &bytes.Buffer{}

mtglib/internal/obfuscated2/client_handshake.go

@@ -1,54 +0,0 @@
-package obfuscated2
-
-import (
-	"crypto/cipher"
-	"crypto/subtle"
-	"encoding/hex"
-	"fmt"
-	"io"
-)
-
-type clientHandhakeFrame struct {
-	handshakeFrame
-}
-
-func (c *clientHandhakeFrame) decryptor(secret []byte) cipher.Stream {
-	hasher := acquireSha256Hasher()
-	defer releaseSha256Hasher(hasher)
-
-	hasher.Write(c.key())
-	hasher.Write(secret)
-
-	return makeAesCtr(hasher.Sum(nil), c.iv())
-}
-
-func (c *clientHandhakeFrame) encryptor(secret []byte) cipher.Stream {
-	invertedHandshake := c.invert()
-
-	hasher := acquireSha256Hasher()
-	defer releaseSha256Hasher(hasher)
-
-	hasher.Write(invertedHandshake.key())
-	hasher.Write(secret)
-
-	return makeAesCtr(hasher.Sum(nil), invertedHandshake.iv())
-}
-
-func ClientHandshake(secret []byte, reader io.Reader) (int, cipher.Stream, cipher.Stream, error) {
-	handshake := clientHandhakeFrame{}
-
-	if _, err := io.ReadFull(reader, handshake.data[:]); err != nil {
-		return 0, nil, nil, fmt.Errorf("cannot read frame: %w", err)
-	}
-
-	decryptor := handshake.decryptor(secret)
-	encryptor := handshake.encryptor(secret)
-
-	decryptor.XORKeyStream(handshake.data[:], handshake.data[:])
-
-	if val := handshake.connectionType(); subtle.ConstantTimeCompare(handshakeConnectionType, val) != 1 {
-		return 0, nil, nil, fmt.Errorf("unsupported connection type: %s", hex.EncodeToString(val))
-	}
-
-	return handshake.dc(), encryptor, decryptor, nil
-}

mtglib/internal/obfuscated2/client_handshake_fuzz_internal_test.go

@@ -1,32 +0,0 @@
-package obfuscated2
-
-import (
-	"bytes"
-	"testing"
-
-	"github.com/stretchr/testify/require"
-)
-
-var FuzzClientHandshakeSecret = []byte{1, 2, 3}
-
-func FuzzClientHandshake(f *testing.F) {
-	f.Add([]byte{1, 2, 3})
-
-	f.Fuzz(func(t *testing.T, frame []byte) {
-		data := bytes.NewReader(frame)
-
-		if _, _, _, err := ClientHandshake(FuzzClientHandshakeSecret, data); err != nil {
-			return
-		}
-
-		handshake := clientHandhakeFrame{}
-		require.Len(t, frame, handshakeFrameLen)
-
-		copy(handshake.data[:], frame)
-
-		decryptor := handshake.decryptor(FuzzClientHandshakeSecret)
-		decryptor.XORKeyStream(handshake.data[:], handshake.data[:])
-
-		require.Equal(t, handshakeConnectionType, handshake.connectionType())
-	})
-}

mtglib/internal/obfuscated2/client_handshake_test.go

@@ -1,89 +0,0 @@
-package obfuscated2_test
-
-import (
-	"bytes"
-	"testing"
-
-	"github.com/9seconds/mtg/v2/internal/testlib"
-	"github.com/9seconds/mtg/v2/mtglib/internal/obfuscated2"
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/mock"
-	"github.com/stretchr/testify/suite"
-)
-
-type ClientHandshakeTestSuite struct {
-	suite.Suite
-	SnapshotTestSuite
-}
-
-func (suite *ClientHandshakeTestSuite) SetupSuite() {
-	suite.NoError(suite.IngestSnapshots(".", "client-handshake-snapshot-"))
-}
-
-func (suite *ClientHandshakeTestSuite) TestCannotRead() {
-	buf := bytes.NewBuffer([]byte{1, 2, 3})
-	_, _, _, err := obfuscated2.ClientHandshake([]byte{1, 2, 3}, buf) // nolint: dogsled
-
-	suite.Error(err)
-}
-
-func (suite *ClientHandshakeTestSuite) TestOk() {
-	for nameV, snapshotV := range suite.snapshots {
-		snapshot := snapshotV
-
-		suite.T().Run(nameV, func(t *testing.T) {
-			buf := bytes.NewBuffer(snapshot.Frame.data)
-
-			dc, encryptor, decryptor, err := obfuscated2.ClientHandshake(
-				snapshot.Secret.data, buf)
-			assert.NoError(t, err)
-			assert.EqualValues(t, snapshot.DC, dc)
-
-			writeData := make([]byte, len(snapshot.Encrypted.Text.data))
-			readData := make([]byte, len(snapshot.Decrypted.Text.data))
-
-			connMock := &testlib.EssentialsConnMock{}
-			connMock.On("Read", mock.Anything).
-				Once().
-				Return(len(snapshot.Decrypted.Text.data), nil).
-				Run(func(args mock.Arguments) {
-					arr, ok := args.Get(0).([]byte)
-
-					suite.True(ok)
-					copy(arr, snapshot.Decrypted.Cipher.data)
-				})
-			connMock.On("Write", mock.Anything).
-				Once().
-				Return(len(snapshot.Encrypted.Text.data), nil).
-				Run(func(args mock.Arguments) {
-					arr, ok := args.Get(0).([]byte)
-
-					suite.True(ok)
-					copy(writeData, arr)
-				})
-
-			conn := obfuscated2.Conn{
-				Conn:      connMock,
-				Encryptor: encryptor,
-				Decryptor: decryptor,
-			}
-
-			n, err := conn.Read(readData)
-			assert.Equal(t, len(readData), n)
-			assert.NoError(t, err)
-			assert.Equal(t, snapshot.Decrypted.Text.data, readData)
-
-			n, err = conn.Write(snapshot.Encrypted.Text.data)
-			assert.Equal(t, len(writeData), n)
-			assert.NoError(t, err)
-			assert.Equal(t, snapshot.Encrypted.Cipher.data, writeData)
-
-			connMock.AssertExpectations(t)
-		})
-	}
-}
-
-func TestClientHandshake(t *testing.T) {
-	t.Parallel()
-	suite.Run(t, &ClientHandshakeTestSuite{})
-}

mtglib/internal/obfuscated2/conn.go

@@ -1,37 +0,0 @@
-package obfuscated2
-
-import (
-	"crypto/cipher"
-
-	"github.com/9seconds/mtg/v2/essentials"
-)
-
-type Conn struct {
-	essentials.Conn
-
-	Encryptor cipher.Stream
-	Decryptor cipher.Stream
-}
-
-func (c Conn) Read(p []byte) (int, error) {
-	n, err := c.Conn.Read(p)
-	if err != nil {
-		return n, err // nolint: wrapcheck
-	}
-
-	c.Decryptor.XORKeyStream(p, p[:n])
-
-	return n, nil
-}
-
-func (c Conn) Write(p []byte) (int, error) {
-	buf := acquireBytesBuffer()
-	defer releaseBytesBuffer(buf)
-
-	buf.Write(p)
-
-	payload := buf.Bytes()
-	c.Encryptor.XORKeyStream(payload, payload)
-
-	return c.Conn.Write(payload) // nolint: wrapcheck
-}

mtglib/internal/obfuscated2/handshake_frame.go

@@ -1,71 +0,0 @@
-package obfuscated2
-
-const (
-	// DefaultDC defines a number of the default DC to use. This value used
-	// only if a value from obfuscated2 handshake frame is 0 (default).
-	DefaultDC = 2
-
-	handshakeFrameLen = 64
-
-	handshakeFrameLenKey            = 32
-	handshakeFrameLenIV             = 16
-	handshakeFrameLenConnectionType = 4
-
-	handshakeFrameOffsetStart          = 8
-	handshakeFrameOffsetKey            = handshakeFrameOffsetStart
-	handshakeFrameOffsetIV             = handshakeFrameOffsetKey + handshakeFrameLenKey
-	handshakeFrameOffsetConnectionType = handshakeFrameOffsetIV + handshakeFrameLenIV
-	handshakeFrameOffsetDC             = handshakeFrameOffsetConnectionType + handshakeFrameLenConnectionType
-)
-
-// Connection-Type: Secure. We support only fake tls.
-var handshakeConnectionType = []byte{0xdd, 0xdd, 0xdd, 0xdd}
-
-// A structure of obfuscated2 handshake frame is following:
-//
-//    [frameOffsetFirst:frameOffsetKey:frameOffsetIV:frameOffsetMagic:frameOffsetDC:frameOffsetEnd].
-//
-//    - 8 bytes of noise
-//    - 32 bytes of AES Key
-//    - 16 bytes of AES IV
-//    - 4 bytes of 'connection type' - this has some setting like a connection type
-//    - 2 bytes of 'DC'. DC is little endian int16
-//    - 2 bytes of noise
-type handshakeFrame struct {
-	data [handshakeFrameLen]byte
-}
-
-func (h *handshakeFrame) dc() int {
-	idx := int16(h.data[handshakeFrameOffsetDC]) | int16(h.data[handshakeFrameOffsetDC+1])<<8 // nolint: gomnd, lll // little endian for int16 is here
-
-	switch {
-	case idx > 0:
-		return int(idx)
-	case idx < 0:
-		return -int(idx)
-	default:
-		return DefaultDC
-	}
-}
-
-func (h *handshakeFrame) key() []byte {
-	return h.data[handshakeFrameOffsetKey:handshakeFrameOffsetIV]
-}
-
-func (h *handshakeFrame) iv() []byte {
-	return h.data[handshakeFrameOffsetIV:handshakeFrameOffsetConnectionType]
-}
-
-func (h *handshakeFrame) connectionType() []byte {
-	return h.data[handshakeFrameOffsetConnectionType:handshakeFrameOffsetDC]
-}
-
-func (h *handshakeFrame) invert() handshakeFrame {
-	copyFrame := *h
-
-	for i := 0; i < handshakeFrameLenKey+handshakeFrameLenIV; i++ {
-		copyFrame.data[handshakeFrameOffsetKey+i] = h.data[handshakeFrameOffsetConnectionType-1-i]
-	}
-
-	return copyFrame
-}

mtglib/internal/obfuscated2/handshake_frame_internal_test.go

@@ -1,73 +0,0 @@
-package obfuscated2
-
-import (
-	"crypto/rand"
-	"encoding/base64"
-	"strconv"
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/suite"
-)
-
-type HandshakeFrameTestSuite struct {
-	suite.Suite
-}
-
-func (suite *HandshakeFrameTestSuite) Decode(value string) []byte {
-	v, err := base64.RawStdEncoding.DecodeString(value)
-	suite.NoError(err)
-
-	return v
-}
-
-func (suite *HandshakeFrameTestSuite) Encode(value []byte) string {
-	return base64.RawStdEncoding.EncodeToString(value)
-}
-
-func (suite *HandshakeFrameTestSuite) TestOk() {
-	hf := handshakeFrame{}
-	testFrame := suite.Decode(
-		"L9TmCzzxl9bPKODBpZeVM/qqNUxQ/axxBup1S2ymbIfUd6f7YSyzzM9EmTFv2/XzGqJGEHuj2zofmUGBLghu5g")
-	copy(hf.data[:], testFrame)
-
-	suite.Equal("zyjgwaWXlTP6qjVMUP2scQbqdUtspmyH1Hen+2Ess8w", suite.Encode(hf.key()))
-	suite.Equal("z0SZMW/b9fMaokYQe6PbOg", suite.Encode(hf.iv()))
-	suite.Equal("H5lBgQ", suite.Encode(hf.connectionType()))
-	suite.EqualValues(2094, hf.dc())
-
-	inverted := hf.invert()
-	suite.Equal("OtujexBGohrz9dtvMZlEz8yzLGH7p3fUh2ymbEt16gY", suite.Encode(inverted.key()))
-	suite.Equal("caz9UEw1qvozlZelweAozw", suite.Encode(inverted.iv()))
-	suite.Equal("H5lBgQ", suite.Encode(inverted.connectionType()))
-	suite.EqualValues(2094, inverted.dc())
-}
-
-func (suite *HandshakeFrameTestSuite) TestDC() {
-	testData := map[int16]int{
-		1:  1,
-		-1: 1,
-		0:  DefaultDC,
-	}
-
-	for k, v := range testData {
-		incoming := k
-		expected := v
-
-		suite.T().Run(strconv.Itoa(int(incoming)), func(t *testing.T) {
-			frame := handshakeFrame{}
-
-			rand.Read(frame.data[:]) // nolint: errcheck
-
-			frame.data[handshakeFrameOffsetDC] = byte(incoming)
-			frame.data[handshakeFrameOffsetDC+1] = byte(incoming >> 8)
-
-			assert.Equal(t, expected, frame.dc())
-		})
-	}
-}
-
-func TestHandshakeFrame(t *testing.T) {
-	t.Parallel()
-	suite.Run(t, &HandshakeFrameTestSuite{})
-}

mtglib/internal/obfuscated2/init_test.go

@@ -1,137 +0,0 @@
-package obfuscated2_test
-
-import (
-	"bytes"
-	"crypto/aes"
-	"crypto/cipher"
-	"encoding/base64"
-	"encoding/json"
-	"fmt"
-	"os"
-	"path/filepath"
-	"strings"
-	"testing"
-
-	"github.com/9seconds/mtg/v2/internal/testlib"
-	"github.com/9seconds/mtg/v2/mtglib/internal/obfuscated2"
-	"github.com/stretchr/testify/require"
-)
-
-type snapshotBytes struct {
-	data []byte
-}
-
-func (s snapshotBytes) MarshalText() ([]byte, error) {
-	if len(s.data) == 0 {
-		return nil, nil
-	}
-
-	return []byte(base64.RawStdEncoding.EncodeToString(s.data)), nil
-}
-
-func (s *snapshotBytes) UnmarshalText(data []byte) error {
-	val, err := base64.RawStdEncoding.DecodeString(string(data))
-	if err != nil {
-		return fmt.Errorf("cannot unmarshal %v: %w", len(val), err)
-	}
-
-	s.data = val
-
-	return nil
-}
-
-type Obfuscated2Snapshot struct {
-	Secret    snapshotBytes `json:"secret"`
-	Frame     snapshotBytes `json:"frame"`
-	DC        int16         `json:"dc"`
-	Encrypted struct {
-		Text   snapshotBytes `json:"text"`
-		Cipher snapshotBytes `json:"cipher"`
-	} `json:"encrypted"`
-	Decrypted struct {
-		Text   snapshotBytes `json:"text"`
-		Cipher snapshotBytes `json:"cipher"`
-	} `json:"decrypted"`
-}
-
-type SnapshotTestSuite struct {
-	snapshots map[string]*Obfuscated2Snapshot
-}
-
-type ServerHandshakeTestData struct {
-	connMock *testlib.EssentialsConnMock
-
-	proxyConn obfuscated2.Conn
-	encryptor cipher.Stream
-	decryptor cipher.Stream
-}
-
-func (suite *SnapshotTestSuite) IngestSnapshots(dirname, namePrefix string) error {
-	suite.snapshots = map[string]*Obfuscated2Snapshot{}
-
-	files, err := os.ReadDir(filepath.Join("testdata", dirname))
-	if err != nil {
-		return fmt.Errorf("cannot ingest snapshots: %w", err)
-	}
-
-	for _, v := range files {
-		if !strings.HasPrefix(v.Name(), namePrefix) {
-			continue
-		}
-
-		filename := filepath.Join("testdata", dirname, v.Name())
-
-		contents, err := os.ReadFile(filename)
-		if err != nil {
-			return fmt.Errorf("cannot read %s: %w", filename, err)
-		}
-
-		value := &Obfuscated2Snapshot{}
-
-		if err := json.Unmarshal(contents, value); err != nil {
-			return fmt.Errorf("cannot unmarshal %s: %w", filename, err)
-		}
-
-		suite.snapshots[v.Name()] = value
-	}
-
-	return nil
-}
-
-func NewServerHandshakeTestData(t *testing.T) ServerHandshakeTestData {
-	buf := &bytes.Buffer{}
-	connMock := &testlib.EssentialsConnMock{}
-
-	handshakeEnc, handshakeDec, err := obfuscated2.ServerHandshake(buf)
-	require.NoError(t, err)
-
-	serverEncrypted := buf.Bytes()
-	decBlock, _ := aes.NewCipher(serverEncrypted[8 : 8+32])
-	decryptor := cipher.NewCTR(decBlock, serverEncrypted[8+32:8+32+16])
-
-	serverDecrypted := make([]byte, len(serverEncrypted))
-	decryptor.XORKeyStream(serverDecrypted, serverEncrypted)
-
-	require.Equal(t, "3d3d3Q",
-		base64.RawStdEncoding.EncodeToString(serverDecrypted[8+32+16:8+32+16+4]))
-
-	serverEncryptedReverted := make([]byte, len(serverEncrypted))
-
-	for i := 0; i < 32+16; i++ {
-		serverEncryptedReverted[8+i] = serverEncrypted[8+32+16-1-i]
-	}
-
-	encBlock, _ := aes.NewCipher(serverEncryptedReverted[8 : 8+32])
-	encryptor := cipher.NewCTR(encBlock, serverEncryptedReverted[8+32:8+32+16])
-
-	return ServerHandshakeTestData{
-		connMock: connMock,
-		proxyConn: obfuscated2.Conn{
-			Conn:      connMock,
-			Encryptor: handshakeEnc,
-			Decryptor: handshakeDec,
-		},
-		encryptor: encryptor,
-		decryptor: decryptor,
-	}
-}

mtglib/internal/obfuscated2/pools.go

@@ -1,39 +0,0 @@
-package obfuscated2
-
-import (
-	"bytes"
-	"crypto/sha256"
-	"hash"
-	"sync"
-)
-
-var (
-	sha256HasherPool = sync.Pool{
-		New: func() interface{} {
-			return sha256.New()
-		},
-	}
-	bytesBufferPool = sync.Pool{
-		New: func() interface{} {
-			return &bytes.Buffer{}
-		},
-	}
-)
-
-func acquireSha256Hasher() hash.Hash {
-	return sha256HasherPool.Get().(hash.Hash) // nolint: forcetypeassert
-}
-
-func releaseSha256Hasher(h hash.Hash) {
-	h.Reset()
-	sha256HasherPool.Put(h)
-}
-
-func acquireBytesBuffer() *bytes.Buffer {
-	return bytesBufferPool.Get().(*bytes.Buffer) // nolint: forcetypeassert
-}
-
-func releaseBytesBuffer(buf *bytes.Buffer) {
-	buf.Reset()
-	bytesBufferPool.Put(buf)
-}

mtglib/internal/obfuscated2/server_handshake.go

@@ -1,67 +0,0 @@
-package obfuscated2
-
-import (
-	"crypto/cipher"
-	"crypto/rand"
-	"encoding/binary"
-	"fmt"
-	"io"
-)
-
-type serverHandshakeFrame struct {
-	handshakeFrame
-}
-
-func (s *serverHandshakeFrame) decryptor() cipher.Stream {
-	invertedHandshake := s.invert()
-
-	return makeAesCtr(invertedHandshake.key(), invertedHandshake.iv())
-}
-
-func (s *serverHandshakeFrame) encryptor() cipher.Stream {
-	return makeAesCtr(s.key(), s.iv())
-}
-
-func ServerHandshake(writer io.Writer) (cipher.Stream, cipher.Stream, error) {
-	handshake := generateServerHanshakeFrame()
-	copyHandshake := handshake
-	encryptor := handshake.encryptor()
-	decryptor := handshake.decryptor()
-
-	encryptor.XORKeyStream(handshake.data[:], handshake.data[:])
-	copy(handshake.key(), copyHandshake.key())
-	copy(handshake.iv(), copyHandshake.iv())
-
-	if _, err := writer.Write(handshake.data[:]); err != nil {
-		return nil, nil, fmt.Errorf("cannot send a handshake frame to telegram: %w", err)
-	}
-
-	return encryptor, decryptor, nil
-}
-
-func generateServerHanshakeFrame() serverHandshakeFrame {
-	frame := serverHandshakeFrame{}
-
-	for {
-		if _, err := rand.Read(frame.data[:]); err != nil {
-			panic(err)
-		}
-
-		if frame.data[0] == 0xef { // nolint: gomnd // taken from tg sources
-			continue
-		}
-
-		switch binary.LittleEndian.Uint32(frame.data[:4]) {
-		case 0x44414548, 0x54534f50, 0x20544547, 0x4954504f, 0xeeeeeeee: // nolint: gomnd // taken from tg sources
-			continue
-		}
-
-		if frame.data[4]|frame.data[5]|frame.data[6]|frame.data[7] == 0 {
-			continue
-		}
-
-		copy(frame.connectionType(), handshakeConnectionType)
-
-		return frame
-	}
-}

mtglib/internal/obfuscated2/server_handshake_fuzz_test.go

@@ -1,58 +0,0 @@
-package obfuscated2_test
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/assert"
-	"github.com/stretchr/testify/mock"
-)
-
-func FuzzServerSend(f *testing.F) {
-	f.Add([]byte{1, 2, 3, 4, 5})
-
-	f.Fuzz(func(t *testing.T, data []byte) {
-		handshakeData := NewServerHandshakeTestData(t)
-
-		handshakeData.connMock.
-			On("Write", mock.Anything).
-			Return(len(data), nil).
-			Once().
-			Run(func(args mock.Arguments) {
-				message := make([]byte, len(data))
-				handshakeData.decryptor.XORKeyStream(message, args.Get(0).([]byte)) // nolint: forcetypeassert
-				assert.Equal(t, message, data)
-			})
-
-		n, err := handshakeData.proxyConn.Write(data)
-
-		assert.EqualValues(t, len(data), n)
-		assert.NoError(t, err)
-		handshakeData.connMock.AssertExpectations(t)
-	})
-}
-
-func FuzzServerReceive(f *testing.F) {
-	f.Add([]byte{1, 2, 3, 4, 5})
-
-	f.Fuzz(func(t *testing.T, data []byte) {
-		handshakeData := NewServerHandshakeTestData(t)
-		buffer := make([]byte, len(data))
-
-		handshakeData.connMock.
-			On("Read", mock.Anything).
-			Return(len(data), nil).
-			Once().
-			Run(func(args mock.Arguments) {
-				message := make([]byte, len(data))
-				handshakeData.encryptor.XORKeyStream(message, data)
-				copy(args.Get(0).([]byte), message) // nolint: forcetypeassert
-			})
-
-		n, err := handshakeData.proxyConn.Read(buffer)
-
-		assert.EqualValues(t, len(data), n)
-		assert.NoError(t, err)
-		assert.Equal(t, data, buffer)
-		handshakeData.connMock.AssertExpectations(t)
-	})
-}

mtglib/internal/obfuscated2/server_handshake_test.go

@@ -1,65 +0,0 @@
-package obfuscated2_test
-
-import (
-	"testing"
-
-	"github.com/stretchr/testify/mock"
-	"github.com/stretchr/testify/suite"
-)
-
-type ServerHandshakeTestSuite struct {
-	suite.Suite
-
-	data ServerHandshakeTestData
-}
-
-func (suite *ServerHandshakeTestSuite) SetupTest() {
-	suite.data = NewServerHandshakeTestData(suite.T())
-}
-
-func (suite *ServerHandshakeTestSuite) TearDownTest() {
-	suite.data.connMock.AssertExpectations(suite.T())
-}
-
-func (suite *ServerHandshakeTestSuite) TestSendToTelegram() {
-	messageToTelegram := []byte{10, 11, 12, 13, 14, 'a'}
-
-	suite.data.connMock.
-		On("Write", mock.Anything).
-		Return(len(messageToTelegram), nil).
-		Once().
-		Run(func(args mock.Arguments) {
-			message := make([]byte, len(messageToTelegram))
-			suite.data.decryptor.XORKeyStream(message, args.Get(0).([]byte)) // nolint: forcetypeassert
-			suite.Equal(messageToTelegram, message)
-		})
-
-	n, err := suite.data.proxyConn.Write(messageToTelegram)
-	suite.EqualValues(len(messageToTelegram), n)
-	suite.NoError(err)
-}
-
-func (suite *ServerHandshakeTestSuite) TestRecieveFromTelegram() {
-	messageFromTelegram := []byte{10, 11, 12, 13, 14, 'a'}
-	buffer := make([]byte, len(messageFromTelegram))
-
-	suite.data.connMock.
-		On("Read", mock.Anything).
-		Return(len(messageFromTelegram), nil).
-		Once().
-		Run(func(args mock.Arguments) {
-			message := make([]byte, len(messageFromTelegram))
-			suite.data.encryptor.XORKeyStream(message, messageFromTelegram)
-			copy(args.Get(0).([]byte), message) // nolint: forcetypeassert
-		})
-
-	n, err := suite.data.proxyConn.Read(buffer)
-	suite.EqualValues(len(messageFromTelegram), n)
-	suite.NoError(err)
-	suite.Equal(messageFromTelegram, buffer)
-}
-
-func TestServerHandshake(t *testing.T) {
-	t.Parallel()
-	suite.Run(t, &ServerHandshakeTestSuite{})
-}

mtglib/internal/obfuscated2/utils.go

@@ -1,15 +0,0 @@
-package obfuscated2
-
-import (
-	"crypto/aes"
-	"crypto/cipher"
-)
-
-func makeAesCtr(key, iv []byte) cipher.Stream {
-	block, err := aes.NewCipher(key)
-	if err != nil {
-		panic(err)
-	}
-
-	return cipher.NewCTR(block, iv)
-}

mtglib/internal/obfuscation/conn.go

@@ -0,0 +1,34 @@
+package obfuscation
+
+import (
+	"crypto/cipher"
+
+	"github.com/9seconds/mtg/v2/essentials"
+)
+
+type conn struct {
+	essentials.Conn
+
+	sendCipher cipher.Stream
+	recvCipher cipher.Stream
+}
+
+func (c conn) Read(p []byte) (int, error) {
+	n, err := c.Conn.Read(p)
+	if err != nil {
+		return n, err
+	}
+
+	c.recvCipher.XORKeyStream(p, p[:n])
+
+	return n, nil
+}
+
+func (c conn) Write(p []byte) (int, error) {
+	// yes, this is a bit violent and goes against a contract in io.Writer
+	// but we do it to avoid creating a new buffer just to perform this
+	// encryption.
+	c.sendCipher.XORKeyStream(p, p)
+
+	return c.Conn.Write(p)
+}

mtglib/internal/obfuscation/conn_test.go

@@ -0,0 +1,102 @@
+package obfuscation
+
+import (
+	"crypto/aes"
+	"crypto/cipher"
+	"encoding/hex"
+	"testing"
+
+	"github.com/9seconds/mtg/v2/essentials"
+	"github.com/9seconds/mtg/v2/internal/testlib"
+	"github.com/stretchr/testify/assert"
+	"github.com/stretchr/testify/mock"
+	"github.com/stretchr/testify/suite"
+)
+
+type ConnTestSuite struct {
+	suite.Suite
+
+	secret []byte
+}
+
+func (s *ConnTestSuite) SetupSuite() {
+	secret := [32]byte{}
+	s.secret = secret[:]
+}
+
+func (s *ConnTestSuite) TestRead() {
+	testData := map[string]string{
+		"data1": "b8f4b41993",
+		"":      "",
+		"___":   "83ca9f",
+	}
+
+	for incoming, outgoing := range testData {
+		s.T().Run(incoming, func(t *testing.T) {
+			connMock := &testlib.EssentialsConnMock{}
+			testConn := s.makeConn(connMock)
+			data := make([]byte, len(incoming))
+
+			connMock.On("Read", make([]byte, len(incoming))).Return(len(incoming), nil).Run(func(args mock.Arguments) {
+				arg := args.Get(0).([]byte)
+				copy(arg, []byte(incoming))
+			})
+
+			n, err := testConn.Read(data)
+
+			assert.Equal(t, len(data), n)
+			assert.NoError(t, err)
+			assert.Equal(t, outgoing, hex.EncodeToString(data))
+
+			connMock.AssertExpectations(t)
+		})
+	}
+}
+
+func (s *ConnTestSuite) TestWrite() {
+	testData := map[string]string{
+		"b8f4b41993": "data1",
+		"":           "",
+		"83ca9f":     "___",
+	}
+
+	for incoming, outgoing := range testData {
+		s.T().Run(incoming, func(t *testing.T) {
+			connMock := &testlib.EssentialsConnMock{}
+			testConn := s.makeConn(connMock)
+			toWrite, _ := hex.DecodeString(incoming)
+			data := make([]byte, len(toWrite))
+
+			connMock.On("Write", []byte(outgoing)).Return(len(toWrite), nil)
+
+			n, err := testConn.Write(toWrite)
+			assert.Equal(t, len(data), n)
+			assert.NoError(t, err)
+
+			connMock.AssertExpectations(t)
+		})
+	}
+}
+
+func (s *ConnTestSuite) makeConn(rawConn *testlib.EssentialsConnMock) essentials.Conn {
+	rblock, err := aes.NewCipher(s.secret)
+	if err != nil {
+		panic(err)
+	}
+
+	wblock, err := aes.NewCipher(s.secret)
+	if err != nil {
+		panic(err)
+	}
+
+	return conn{
+		Conn:       rawConn,
+		sendCipher: cipher.NewCTR(wblock, s.secret[:aes.BlockSize]),
+		recvCipher: cipher.NewCTR(rblock, s.secret[:aes.BlockSize]),
+	}
+}
+
+func TestConn(t *testing.T) {
+	t.Parallel()
+	suite.Run(t, &ConnTestSuite{})
+}

mtglib/internal/obfuscation/handshake_frame.go

@@ -0,0 +1,111 @@
+package obfuscation
+
+import (
+	"crypto/rand"
+	"encoding/binary"
+	"slices"
+)
+
+// https://core.telegram.org/mtproto/mtproto-transports#transport-obfuscation
+const (
+	// default DC is nothing is selected
+	defaultDC = 2
+
+	// the length of the handshake frame. Always 64 bytes
+	hfLen = 64
+
+	hfLenKey            = 32
+	hfLenIV             = 16
+	hfLenConnectionType = 4
+
+	// A structure of obfuscated handshake frame is following:
+	//
+	//	[frameOffsetFirst:frameOffsetKey:frameOffsetIV:frameOffsetMagic:frameOffsetDC:frameOffsetEnd].
+	//
+	//	- 8 bytes of noise
+	//	- 32 bytes of AES Key
+	//	- 16 bytes of AES IV
+	//	- 4 bytes of 'connection type' - this has some setting like a connection type
+	//	- 2 bytes of 'DC'. DC is little endian int16
+	//	- 2 bytes of noise
+	hfOffsetKey            = 8
+	hfOffsetIV             = hfOffsetKey + hfLenKey
+	hfOffsetConnectionType = hfOffsetIV + hfLenIV
+	hfOffsetDC             = hfOffsetConnectionType + hfLenConnectionType
+)
+
+// Connection-Type: Secure. We support only fake tls.
+var hfConnectionType = [hfLenConnectionType]byte{0xdd, 0xdd, 0xdd, 0xdd}
+
+type handshakeFrame struct {
+	data [hfLen]byte
+}
+
+func (h *handshakeFrame) key() []byte {
+	return h.data[hfOffsetKey : hfOffsetKey+hfLenKey]
+}
+
+func (h *handshakeFrame) iv() []byte {
+	return h.data[hfOffsetIV : hfOffsetIV+hfLenIV]
+}
+
+func (h *handshakeFrame) connectionType() []byte {
+	return h.data[hfOffsetConnectionType : hfOffsetConnectionType+hfLenConnectionType]
+}
+
+func (h *handshakeFrame) dcSlice() []byte {
+	return h.data[hfOffsetDC : hfOffsetDC+2]
+}
+
+func (h *handshakeFrame) dc() int {
+	idx := int16(binary.LittleEndian.Uint16(h.dcSlice()))
+
+	switch {
+	case idx > 0:
+		return int(idx)
+	case idx < 0:
+		return -int(idx)
+	}
+
+	return defaultDC
+}
+
+func (h *handshakeFrame) revert() {
+	slices.Reverse(h.data[hfOffsetKey:hfOffsetConnectionType])
+}
+
+func generateHandshake(dc int) handshakeFrame {
+	frame := handshakeFrame{}
+
+	for {
+		if _, err := rand.Read(frame.data[:]); err != nil {
+			panic(err)
+		}
+
+		// https://github.com/tdlib/td/blob/master/td/mtproto/TcpTransport.cpp#L157-L158.
+		if frame.data[0] == 0xef { // abridged header
+			// https://core.telegram.org/mtproto/mtproto-transports#abridged
+			continue
+		}
+
+		switch binary.LittleEndian.Uint32(frame.data[:4]) {
+		case 0x44414548, // HEAD
+			0x54534f50, // POST
+			0x20544547, // GET
+			0x4954504f, // OPTI
+			0x02010316, // ????
+			0xdddddddd, // PaddedIntermediate header
+			0xeeeeeeee: // Intermediate header
+			continue
+		}
+
+		if frame.data[4]|frame.data[5]|frame.data[6]|frame.data[7] == 0 {
+			continue
+		}
+
+		copy(frame.connectionType(), hfConnectionType[:])
+		binary.LittleEndian.PutUint16(frame.dcSlice(), uint16(dc))
+
+		return frame
+	}
+}

mtglib/internal/obfuscation/handshake_frame_fuzz_test.go

@@ -1,4 +1,4 @@
-package obfuscated2
+package obfuscation
 
 import (
 	"encoding/binary"
@@ -7,9 +7,9 @@ import (
 	"github.com/stretchr/testify/assert"
 )
 
-func FuzzServerGenerateHandshakeFrame(f *testing.F) {
+func FuzzGenerateHandshakeFrame(f *testing.F) {
-	f.Fuzz(func(t *testing.T, arg int) {
+	f.Fuzz(func(t *testing.T, arg int16) {
-		frame := generateServerHanshakeFrame()
+		frame := generateHandshake(int(arg))
 
 		assert.NotEqualValues(t, 0xef, frame.data[0])
 
@@ -18,13 +18,23 @@ func FuzzServerGenerateHandshakeFrame(f *testing.F) {
 		assert.NotEqualValues(t, 0x54534f50, firstBytes)
 		assert.NotEqualValues(t, 0x20544547, firstBytes)
 		assert.NotEqualValues(t, 0x4954504f, firstBytes)
+		assert.NotEqualValues(t, 0x02010316, firstBytes)
 		assert.NotEqualValues(t, 0xeeeeeeee, firstBytes)
+		assert.NotEqualValues(t, 0xdddddddd, firstBytes)
 
 		assert.NotEqualValues(
 			t,
 			0,
 			frame.data[4]|frame.data[5]|frame.data[6]|frame.data[7])
 
-		assert.Equal(t, handshakeConnectionType, frame.connectionType())
+		assert.Equal(t, hfConnectionType[:], frame.connectionType())
+
+		if arg < 0 {
+			arg = -arg
+		} else if arg == 0 {
+			arg = defaultDC
+		}
+
+		assert.EqualValues(t, arg, frame.dc())
 	})
 }