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Merge pull request #230 from 9seconds/simplify-sockopts

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Simplify sockopts
This commit is contained in:
Sergey Arkhipov
2021-12-01 16:03:52 +04:00
committed by GitHub
parent 16c06f247c ef55fbba15
commit 3f8f96b91f
49 changed files with 478 additions and 290 deletions
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essentials/conns.go
+28
View File
@@ -0,0 +1,28 @@
package essentials
import (
"io"
"net"
)
// CloseableReader is a 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.
type CloseableWriter interface {
io.Writer
CloseWrite() error
}
// Conn is an extension of net.Conn that can close its ends. This mostly
// implies TCP connections.
type Conn interface {
net.Conn
CloseableReader
CloseableWriter
}
essentials/doc.go
+6
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@@ -0,0 +1,6 @@
// This is a minimal package that contains _essentials_ of mtglib and its
// complimentary packages. This is mostly required to comply some interfaces
// between mtglib and its internals to avoid circular dependencies.
//
// This package should contain only bare minimum and mostly technical.
package essentials
example.config.toml
+3 -1
View File
@@ -30,7 +30,9 @@ 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.
tcp-buffer = "4kb"
#
# 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:
go.mod
+6 -1
View File
@@ -25,11 +25,13 @@ require (
github.com/stretchr/testify v1.7.0
github.com/tylertreat/BoomFilters v0.0.0-20210315201527-1a82519a3e43
golang.org/x/crypto v0.0.0-20210921155107-089bfa567519
golang.org/x/net v0.0.0-20211005001312-d4b1ae081e3b
golang.org/x/net v0.0.0-20211005001312-d4b1ae081e3b // indirect
golang.org/x/sys v0.0.0-20211004093028-2c5d950f24ef
google.golang.org/protobuf v1.27.1 // indirect
)
require github.com/txthinking/socks5 v0.0.0-20211121111206-e03c1217a50b
require (
github.com/beorn7/perks v1.0.1 // indirect
github.com/cenkalti/backoff/v4 v4.1.0 // indirect
@@ -38,9 +40,12 @@ require (
github.com/gotd/ige v0.1.5 // indirect
github.com/gotd/xor v0.1.1 // indirect
github.com/matttproud/golang_protobuf_extensions v1.0.1 // 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/txthinking/runnergroup v0.0.0-20210608031112-152c7c4432bf // indirect
github.com/txthinking/x v0.0.0-20210326105829-476fab902fbe // indirect
go.uber.org/atomic v1.7.0 // indirect
go.uber.org/multierr v1.6.0 // indirect
go.uber.org/zap v1.16.0 // indirect
go.sum
+8
View File
@@ -195,6 +195,8 @@ github.com/mwitkow/go-conntrack v0.0.0-20161129095857-cc309e4a2223/go.mod h1:qRW
github.com/mwitkow/go-conntrack v0.0.0-20190716064945-2f068394615f/go.mod h1:qRWi+5nqEBWmkhHvq77mSJWrCKwh8bxhgT7d/eI7P4U=
github.com/panjf2000/ants/v2 v2.4.6 h1:drmj9mcygn2gawZ155dRbo+NfXEfAssjZNU1qoIb4gQ=
github.com/panjf2000/ants/v2 v2.4.6/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 v1.9.4/go.mod h1:u1nR/EPcESfeI/szUZKdtJ0xRNbUoANCkoOuaOx1Y+c=
github.com/pkg/diff v0.0.0-20210226163009-20ebb0f2a09e/go.mod h1:pJLUxLENpZxwdsKMEsNbx1VGcRFpLqf3715MtcvvzbA=
@@ -250,6 +252,12 @@ github.com/stretchr/testify v1.4.0/go.mod h1:j7eGeouHqKxXV5pUuKE4zz7dFj8WfuZ+81P
github.com/stretchr/testify v1.6.1/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
github.com/stretchr/testify v1.7.0 h1:nwc3DEeHmmLAfoZucVR881uASk0Mfjw8xYJ99tb5CcY=
github.com/stretchr/testify v1.7.0/go.mod h1:6Fq8oRcR53rry900zMqJjRRixrwX3KX962/h/Wwjteg=
github.com/txthinking/runnergroup v0.0.0-20210608031112-152c7c4432bf h1:7PflaKRtU4np/epFxRXlFhlzLXZzKFrH5/I4so5Ove0=
github.com/txthinking/runnergroup v0.0.0-20210608031112-152c7c4432bf/go.mod h1:CLUSJbazqETbaR+i0YAhXBICV9TrKH93pziccMhmhpM=
github.com/txthinking/socks5 v0.0.0-20211121111206-e03c1217a50b h1:6J/38A0Xmdnjacfie0Udams7OP/GdoExyTipKwuQWjY=
github.com/txthinking/socks5 v0.0.0-20211121111206-e03c1217a50b/go.mod h1:7NloQcrxaZYKURWph5HLxVDlIwMHJXCPkeWPtpftsIg=
github.com/txthinking/x v0.0.0-20210326105829-476fab902fbe h1:gMWxZxBFRAXqoGkwkYlPX2zvyyKNWJpxOxCrjqJkm5A=
github.com/txthinking/x v0.0.0-20210326105829-476fab902fbe/go.mod h1:WgqbSEmUYSjEV3B1qmee/PpP2NYEz4bL9/+mF1ma+s4=
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/yuin/goldmark v1.1.25/go.mod h1:3hX8gzYuyVAZsxl0MRgGTJEmQBFcNTphYh9decYSb74=
internal/cli/access.go
+2 -1
View File
@@ -13,6 +13,7 @@ import (
"strings"
"sync"
"github.com/9seconds/mtg/v2/essentials"
"github.com/9seconds/mtg/v2/internal/config"
"github.com/9seconds/mtg/v2/internal/utils"
"github.com/9seconds/mtg/v2/mtglib"
@@ -106,7 +107,7 @@ 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) (net.Conn, error) {
client := ntw.MakeHTTPClient(func(ctx context.Context, network, address string) (essentials.Conn, error) {
return ntw.DialContext(ctx, protocol, address) // nolint: wrapcheck
})
internal/cli/run_proxy.go
+2 -4
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@@ -38,10 +38,9 @@ func makeNetwork(conf *config.Config, version string) (mtglib.Network, error) {
tcpTimeout := conf.Network.Timeout.TCP.Get(network.DefaultTimeout)
httpTimeout := conf.Network.Timeout.HTTP.Get(network.DefaultHTTPTimeout)
dohIP := conf.Network.DOHIP.Get(net.ParseIP(network.DefaultDOHHostname)).String()
bufferSize := conf.TCPBuffer.Get(network.DefaultBufferSize)
userAgent := "mtg/" + version
baseDialer, err := network.NewDefaultDialer(tcpTimeout, int(bufferSize))
baseDialer, err := network.NewDefaultDialer(tcpTimeout, 0)
if err != nil {
return nil, fmt.Errorf("cannot build a default dialer: %w", err)
}
@@ -193,7 +192,6 @@ func runProxy(conf *config.Config, version string) error { // nolint: funlen
EventStream: eventStream,
Secret: conf.Secret,
BufferSize: conf.TCPBuffer.Get(mtglib.DefaultBufferSize),
DomainFrontingPort: conf.DomainFrontingPort.Get(mtglib.DefaultDomainFrontingPort),
PreferIP: conf.PreferIP.Get(mtglib.DefaultPreferIP),
@@ -206,7 +204,7 @@ func runProxy(conf *config.Config, version string) error { // nolint: funlen
return fmt.Errorf("cannot create a proxy: %w", err)
}
listener, err := utils.NewListener(conf.BindTo.Get(""), int(opts.BufferSize))
listener, err := utils.NewListener(conf.BindTo.Get(""), 0)
if err != nil {
return fmt.Errorf("cannot start proxy: %w", err)
}
internal/cli/simple_run.go
+1 -5
View File
@@ -15,7 +15,7 @@ type SimpleRun struct {
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
TCPBuffer string `kong:"name='tcp-buffer',short='b',default='4KB',help='Size of TCP buffer to use.'"` // 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
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
@@ -38,10 +38,6 @@ func (s *SimpleRun) Run(cli *CLI, version string) error { // nolint: cyclop
return fmt.Errorf("incorrect concurrency: %w", err)
}
if err := conf.TCPBuffer.Set(s.TCPBuffer); err != nil {
return fmt.Errorf("incorrect tcp-buffer: %w", err)
}
if err := conf.PreferIP.Set(s.PreferIP); err != nil {
return fmt.Errorf("incorrect prefer-ip: %w", err)
}
internal/config/config.go
-1
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@@ -25,7 +25,6 @@ type Config struct {
AllowFallbackOnUnknownDC TypeBool `json:"allowFallbackOnUnknownDc"`
Secret mtglib.Secret `json:"secret"`
BindTo TypeHostPort `json:"bindTo"`
TCPBuffer TypeBytes `json:"tcpBuffer"`
PreferIP TypePreferIP `json:"preferIp"`
DomainFrontingPort TypePort `json:"domainFrontingPort"`
TolerateTimeSkewness TypeDuration `json:"tolerateTimeSkewness"`
internal/config/parse.go
-1
View File
@@ -13,7 +13,6 @@ type tomlConfig struct {
AllowFallbackOnUnknownDC bool `toml:"allow-fallback-on-unknown-dc" json:"allowFallbackOnUnknownDc,omitempty"`
Secret string `toml:"secret" json:"secret"`
BindTo string `toml:"bind-to" json:"bindTo"`
TCPBuffer string `toml:"tcp-buffer" json:"tcpBuffer,omitempty"`
PreferIP string `toml:"prefer-ip" json:"preferIp,omitempty"`
DomainFrontingPort uint `toml:"domain-fronting-port" json:"domainFrontingPort,omitempty"`
TolerateTimeSkewness string `toml:"tolerate-time-skewness" json:"tolerateTimeSkewness,omitempty"`
internal/testlib/mtglib_network_mock.go
+6 -6
View File
@@ -2,9 +2,9 @@ package testlib
import (
"context"
"net"
"net/http"
"github.com/9seconds/mtg/v2/essentials"
"github.com/stretchr/testify/mock"
)
@@ -12,19 +12,19 @@ type MtglibNetworkMock struct {
mock.Mock
}
func (m *MtglibNetworkMock) Dial(network, address string) (net.Conn, error) {
func (m *MtglibNetworkMock) Dial(network, address string) (essentials.Conn, error) {
args := m.Called(network, address)
return args.Get(0).(net.Conn), args.Error(1) // nolint: wrapcheck
return args.Get(0).(essentials.Conn), args.Error(1) // nolint: wrapcheck
}
func (m *MtglibNetworkMock) DialContext(ctx context.Context, network, address string) (net.Conn, error) {
func (m *MtglibNetworkMock) DialContext(ctx context.Context, network, address string) (essentials.Conn, error) {
args := m.Called(ctx, network, address)
return args.Get(0).(net.Conn), args.Error(1) // nolint: wrapcheck
return args.Get(0).(essentials.Conn), args.Error(1) // nolint: wrapcheck
}
func (m *MtglibNetworkMock) MakeHTTPClient(dialFunc func(ctx context.Context,
network, address string) (net.Conn, error)) *http.Client {
network, address string) (essentials.Conn, error)) *http.Client {
return m.Called(dialFunc).Get(0).(*http.Client)
}
internal/testlib/net_conn_mock.go
+17 -9
View File
@@ -7,42 +7,50 @@ import (
"github.com/stretchr/testify/mock"
)
type NetConnMock struct {
type EssentialsConnMock struct {
mock.Mock
}
func (n *NetConnMock) Read(b []byte) (int, error) {
func (n *EssentialsConnMock) Read(b []byte) (int, error) {
args := n.Called(b)
return args.Int(0), args.Error(1)
}
func (n *NetConnMock) Write(b []byte) (int, error) {
func (n *EssentialsConnMock) Write(b []byte) (int, error) {
args := n.Called(b)
return args.Int(0), args.Error(1)
}
func (n *NetConnMock) Close() error {
func (n *EssentialsConnMock) Close() error {
return n.Called().Error(0) // nolint: wrapcheck
}
func (n *NetConnMock) LocalAddr() net.Addr {
func (n *EssentialsConnMock) CloseRead() error {
return n.Called().Error(0) // nolint: wrapcheck
}
func (n *EssentialsConnMock) CloseWrite() error {
return n.Called().Error(0) // nolint: wrapcheck
}
func (n *EssentialsConnMock) LocalAddr() net.Addr {
return n.Called().Get(0).(net.Addr)
}
func (n *NetConnMock) RemoteAddr() net.Addr {
func (n *EssentialsConnMock) RemoteAddr() net.Addr {
return n.Called().Get(0).(net.Addr)
}
func (n *NetConnMock) SetDeadline(t time.Time) error {
func (n *EssentialsConnMock) SetDeadline(t time.Time) error {
return n.Called(t).Error(0) // nolint: wrapcheck
}
func (n *NetConnMock) SetReadDeadline(t time.Time) error {
func (n *EssentialsConnMock) SetReadDeadline(t time.Time) error {
return n.Called(t).Error(0) // nolint: wrapcheck
}
func (n *NetConnMock) SetWriteDeadline(t time.Time) error {
func (n *EssentialsConnMock) SetWriteDeadline(t time.Time) error {
return n.Called(t).Error(0) // nolint: wrapcheck
}
internal/utils/net_listener.go
+1 -4
View File
@@ -9,8 +9,6 @@ import (
type Listener struct {
net.Listener
bufferSize int
}
func (l Listener) Accept() (net.Conn, error) {
@@ -19,7 +17,7 @@ func (l Listener) Accept() (net.Conn, error) {
return nil, err // nolint: wrapcheck
}
if err := network.SetClientSocketOptions(conn, l.bufferSize); err != nil {
if err := network.SetClientSocketOptions(conn, 0); err != nil {
conn.Close()
return nil, fmt.Errorf("cannot set TCP options: %w", err)
@@ -36,6 +34,5 @@ func NewListener(bindTo string, bufferSize int) (net.Listener, error) {
return Listener{
Listener: base,
bufferSize: bufferSize,
}, nil
}
mtglib/conns.go
+5 -4
View File
@@ -4,12 +4,13 @@ import (
"bytes"
"context"
"io"
"net"
"sync"
"github.com/9seconds/mtg/v2/essentials"
)
type connTraffic struct {
net.Conn
essentials.Conn
streamID string
stream EventStream
@@ -37,7 +38,7 @@ func (c connTraffic) Write(b []byte) (int, error) {
}
type connRewind struct {
net.Conn
essentials.Conn
active io.Reader
buf bytes.Buffer
@@ -58,7 +59,7 @@ func (c *connRewind) Rewind() {
c.active = io.MultiReader(&c.buf, c.Conn)
}
func newConnRewind(conn net.Conn) *connRewind {
func newConnRewind(conn essentials.Conn) *connRewind {
rv := &connRewind{
Conn: conn,
}
mtglib/conns_internal_test.go
+3 -3
View File
@@ -14,7 +14,7 @@ import (
)
type ConnRewindBaseConn struct {
testlib.NetConnMock
testlib.EssentialsConnMock
readBuffer bytes.Buffer
}
@@ -29,13 +29,13 @@ type ConnTrafficTestSuite struct {
suite.Suite
eventStreamMock *EventStreamMock
connMock *testlib.NetConnMock
connMock *testlib.EssentialsConnMock
conn io.ReadWriter
}
func (suite *ConnTrafficTestSuite) SetupTest() {
suite.eventStreamMock = &EventStreamMock{}
suite.connMock = &testlib.NetConnMock{}
suite.connMock = &testlib.EssentialsConnMock{}
suite.conn = connTraffic{
Conn: suite.connMock,
streamID: "CONNID",
mtglib/init.go
+7 -3
View File
@@ -23,6 +23,8 @@ import (
"net"
"net/http"
"time"
"github.com/9seconds/mtg/v2/essentials"
)
var (
@@ -61,6 +63,8 @@ const (
DefaultConcurrency = 4096
// DefaultBufferSize is a default size of a copy buffer.
//
// Deprecated: this setting no longer makes any effect.
DefaultBufferSize = 16 * 1024 // 16 kib
// DefaultDomainFrontingPort is a default port (HTTPS) to connect to in
@@ -114,16 +118,16 @@ const (
// 3. Doing HTTP requests (for example, for FireHOL ipblocklist).
type Network interface {
// Dial establishes context-free TCP connections.
Dial(network, address string) (net.Conn, error)
Dial(network, address string) (essentials.Conn, error)
// DialContext dials using a context. This is a preferrable
// way of establishing TCP connections.
DialContext(ctx context.Context, network, address string) (net.Conn, error)
DialContext(ctx context.Context, network, address string) (essentials.Conn, error)
// MakeHTTPClient build an HTTP client with given dial function. If
// nothing is provided, then DialContext of this interface is going
// to be used.
MakeHTTPClient(func(ctx context.Context, network, address string) (net.Conn, error)) *http.Client
MakeHTTPClient(func(ctx context.Context, network, address string) (essentials.Conn, error)) *http.Client
}
// AntiReplayCache is an interface that is used to detect replay attacks
mtglib/internal/faketls/conn.go
+2 -2
View File
@@ -4,13 +4,13 @@ import (
"bytes"
"fmt"
"math/rand"
"net"
"github.com/9seconds/mtg/v2/essentials"
"github.com/9seconds/mtg/v2/mtglib/internal/faketls/record"
)
type Conn struct {
net.Conn
essentials.Conn
readBuffer bytes.Buffer
}
mtglib/internal/faketls/conn_test.go
+1 -1
View File
@@ -15,7 +15,7 @@ import (
)
type ConnMock struct {
testlib.NetConnMock
testlib.EssentialsConnMock
readBuffer bytes.Buffer
writeBuffer bytes.Buffer
mtglib/internal/obfuscated2/client_handshake_test.go
+1 -1
View File
@@ -42,7 +42,7 @@ func (suite *ClientHandshakeTestSuite) TestOk() {
writeData := make([]byte, len(snapshot.Encrypted.Text.data))
readData := make([]byte, len(snapshot.Decrypted.Text.data))
connMock := &testlib.NetConnMock{}
connMock := &testlib.EssentialsConnMock{}
connMock.On("Read", mock.Anything).
Once().
Return(len(snapshot.Decrypted.Text.data), nil).
mtglib/internal/obfuscated2/conn.go
+3 -2
View File
@@ -2,11 +2,12 @@ package obfuscated2
import (
"crypto/cipher"
"net"
"github.com/9seconds/mtg/v2/essentials"
)
type Conn struct {
net.Conn
essentials.Conn
Encryptor cipher.Stream
Decryptor cipher.Stream
mtglib/internal/obfuscated2/server_handshake_test.go
+2 -2
View File
@@ -16,7 +16,7 @@ import (
type ServerHandshakeTestSuite struct {
suite.Suite
connMock *testlib.NetConnMock
connMock *testlib.EssentialsConnMock
proxyConn obfuscated2.Conn
encryptor cipher.Stream
decryptor cipher.Stream
@@ -24,7 +24,7 @@ type ServerHandshakeTestSuite struct {
func (suite *ServerHandshakeTestSuite) SetupTest() {
buf := &bytes.Buffer{}
suite.connMock = &testlib.NetConnMock{}
suite.connMock = &testlib.EssentialsConnMock{}
encryptor, decryptor, err := obfuscated2.ServerHandshake(buf)
suite.NoError(err)
mtglib/internal/relay/conn.go
-19
View File
@@ -1,19 +0,0 @@
package relay
import (
"fmt"
"net"
"time"
)
type conn struct {
net.Conn
}
func (c conn) Read(p []byte) (int, error) {
if err := c.SetReadDeadline(time.Now().Add(getTimeout())); err != nil {
return 0, fmt.Errorf("cannot set read deadline: %w", err)
}
return c.Conn.Read(p) // nolint: wrapcheck
}
mtglib/internal/relay/init.go
+3 -4
View File
@@ -3,10 +3,9 @@ package relay
import "time"
const (
ConnectionTimeToLiveMin = 2 * time.Minute
ConnectionTimeToLiveMax = 10 * time.Minute
TimeoutMin = 20 * time.Second
TimeoutMax = time.Minute
copyBufferSize = 64 * 1024
writerBufferSize = 128 * 1024
readTimeout = 10 * time.Millisecond
)
type Logger interface {
mtglib/internal/relay/pools.go
+20 -21
View File
@@ -1,32 +1,31 @@
package relay
import "sync"
import (
"bufio"
"io"
"net"
"sync"
)
type eastWest struct {
east []byte
west []byte
}
var eastWestPool = sync.Pool{
var syncPairPool = sync.Pool{
New: func() interface{} {
return &eastWest{}
return &syncPair{
writer: bufio.NewWriterSize(nil, writerBufferSize),
copyBuf: make([]byte, copyBufferSize),
}
},
}
func acquireEastWest(bufferSize int) *eastWest {
wanted := eastWestPool.Get().(*eastWest) // nolint: forcetypeassert
func acquireSyncPair(reader net.Conn, writer io.Writer) *syncPair {
sp := syncPairPool.Get().(*syncPair) // nolint: forcetypeassert
sp.writer.Reset(writer)
sp.reader = reader
if len(wanted.east) != bufferSize {
wanted.east = make([]byte, bufferSize)
}
if len(wanted.west) != bufferSize {
wanted.west = make([]byte, bufferSize)
}
return wanted
return sp
}
func releaseEastWest(ew *eastWest) {
eastWestPool.Put(ew)
func releaseSyncPair(sp *syncPair) {
sp.writer.Reset(nil)
sp.reader = nil
syncPairPool.Put(sp)
}
mtglib/internal/relay/relay.go
+26 -20
View File
@@ -2,17 +2,18 @@ package relay
import (
"context"
"errors"
"io"
"net"
"sync"
"github.com/9seconds/mtg/v2/essentials"
)
func Relay(ctx context.Context, log Logger, bufferSize int,
telegramConn net.Conn, clientConn io.ReadWriteCloser) {
func Relay(ctx context.Context, log Logger, telegramConn, clientConn essentials.Conn) {
defer telegramConn.Close()
defer clientConn.Close()
ctx, cancel := context.WithTimeout(ctx, getConnectionTimeToLive())
ctx, cancel := context.WithCancel(ctx)
defer cancel()
go func() {
@@ -21,30 +22,35 @@ func Relay(ctx context.Context, log Logger, bufferSize int,
clientConn.Close()
}()
buffers := acquireEastWest(bufferSize)
defer releaseEastWest(buffers)
telegramConn = conn{
Conn: telegramConn,
}
wg := &sync.WaitGroup{}
wg.Add(2) // nolint: gomnd
go pump(log, telegramConn, clientConn, wg, buffers.east, "east -> west")
go pump(log, telegramConn, clientConn, wg, "client -> telegram")
pump(log, clientConn, telegramConn, wg, buffers.west, "west -> east")
pump(log, clientConn, telegramConn, wg, "telegram -> client")
wg.Wait()
}
func pump(log Logger, src io.ReadCloser, dst io.WriteCloser, wg *sync.WaitGroup,
buf []byte, direction string) {
defer wg.Done()
defer src.Close()
defer dst.Close()
func pump(log Logger, src, dst essentials.Conn, wg *sync.WaitGroup, direction string) {
syncer := acquireSyncPair(src, dst)
if n, err := io.CopyBuffer(dst, src, buf); err != nil {
log.Printf("cannot pump %s (written %d bytes): %w", direction, n, err)
defer func() {
syncer.Flush()
releaseSyncPair(syncer)
src.CloseRead() // nolint: errcheck
dst.CloseWrite() // nolint: errcheck
wg.Done()
}()
n, err := syncer.Sync()
switch {
case err == nil:
log.Printf("%s has been finished", direction)
case errors.Is(err, io.EOF):
log.Printf("%s has been finished because of EOF. Written %d bytes", direction, n)
default:
log.Printf("%s has been finished (written %d bytes): %v", direction, n, err)
}
}
mtglib/internal/relay/relay_test.go
+11 -7
View File
@@ -17,8 +17,8 @@ type RelayTestSuite struct {
loggerMock relay.Logger
ctx context.Context
ctxCancel context.CancelFunc
telegramConnMock *testlib.NetConnMock
clientConnMock *testlib.NetConnMock
telegramConnMock *testlib.EssentialsConnMock
clientConnMock *testlib.EssentialsConnMock
}
func (suite *RelayTestSuite) SetupTest() {
@@ -26,8 +26,8 @@ func (suite *RelayTestSuite) SetupTest() {
suite.ctx = ctx
suite.ctxCancel = cancel
suite.loggerMock = &loggerMock{}
suite.telegramConnMock = &testlib.NetConnMock{}
suite.clientConnMock = &testlib.NetConnMock{}
suite.telegramConnMock = &testlib.EssentialsConnMock{}
suite.clientConnMock = &testlib.EssentialsConnMock{}
}
func (suite *RelayTestSuite) TearDownTest() {
@@ -37,17 +37,21 @@ func (suite *RelayTestSuite) TearDownTest() {
}
func (suite *RelayTestSuite) TestExit() {
suite.telegramConnMock.On("SetReadDeadline", mock.Anything).Return(nil)
suite.telegramConnMock.On("Close").Return(nil)
suite.telegramConnMock.On("CloseRead").Return(nil).Once()
suite.telegramConnMock.On("CloseWrite").Return(nil).Once()
suite.telegramConnMock.On("Read", mock.Anything).Return(10, io.EOF).Once()
suite.telegramConnMock.On("Write", mock.Anything).Return(10, io.EOF).Maybe()
suite.telegramConnMock.On("SetReadDeadline", mock.Anything).Return(nil).Maybe()
suite.clientConnMock.On("Read", mock.Anything).Return(0, io.EOF).Once()
suite.clientConnMock.On("Write", mock.Anything).Return(10, io.EOF).Maybe()
suite.clientConnMock.On("Close").Return(nil)
suite.clientConnMock.On("CloseRead").Return(nil).Once()
suite.clientConnMock.On("CloseWrite").Return(nil).Once()
suite.clientConnMock.On("SetReadDeadline", mock.Anything).Return(nil).Maybe()
relay.Relay(suite.ctx, suite.loggerMock, 1024,
suite.telegramConnMock, suite.clientConnMock)
relay.Relay(suite.ctx, suite.loggerMock, suite.telegramConnMock, suite.clientConnMock)
}
func TestRelay(t *testing.T) {
mtglib/internal/relay/sync_pair.go
+77
View File
@@ -0,0 +1,77 @@
package relay
import (
"bufio"
"errors"
"fmt"
"io"
"net"
"os"
"sync"
"time"
)
type syncPair struct {
writer *bufio.Writer
copyBuf []byte
mutex sync.Mutex
reader net.Conn
}
func (s *syncPair) Sync() (int64, error) {
return io.CopyBuffer(s, s, s.copyBuf) // nolint: wrapcheck
}
func (s *syncPair) Read(p []byte) (int, error) {
n, err := s.readBlocking(p, false)
// nothing has been delivered for readTimeout time. Let's flush.
if errors.Is(err, os.ErrDeadlineExceeded) {
if err := s.Flush(); err != nil {
return 0, fmt.Errorf("cannot flush writer hand-side: %w", err)
}
return s.readBlocking(p, true)
}
return n, err
}
func (s *syncPair) Write(p []byte) (int, error) {
s.mutex.Lock()
defer s.mutex.Unlock()
n, err := s.writer.Write(p)
// optimization for a case when we have a small package and want to avoid a
// delay in readTimeout. In that case, we assume that peer has finished to
// sent a data it wants to send so we can flush without waiting for anything
// else.
if err == nil && n < copyBufferSize {
err = s.writer.Flush()
}
return n, err // nolint: wrapcheck
}
func (s *syncPair) Flush() error {
s.mutex.Lock()
defer s.mutex.Unlock()
return s.writer.Flush() // nolint: wrapcheck
}
func (s *syncPair) readBlocking(p []byte, blocking bool) (int, error) {
var deadline time.Time
if !blocking {
deadline = time.Now().Add(readTimeout)
}
if err := s.reader.SetReadDeadline(deadline); err != nil {
return 0, fmt.Errorf("cannot set read deadline: %w", err)
}
return s.reader.Read(p) // nolint: wrapcheck
}
mtglib/internal/relay/timeouts.go
-22
View File
@@ -1,22 +0,0 @@
package relay
import (
"math/rand"
"time"
)
func getConnectionTimeToLive() time.Duration {
return getTime(ConnectionTimeToLiveMin, ConnectionTimeToLiveMax)
}
func getTimeout() time.Duration {
return getTime(TimeoutMin, TimeoutMax)
}
func getTime(minDuration, maxDuration time.Duration) time.Duration {
minDurationInSeconds := int(minDuration.Seconds())
maxDurationInSeconds := int(maxDuration.Seconds())
number := minDurationInSeconds + rand.Intn(maxDurationInSeconds-minDurationInSeconds)
return time.Duration(number) * time.Second
}
mtglib/internal/relay/timeouts_internal_test.go
-37
View File
@@ -1,37 +0,0 @@
package relay
import (
"fmt"
"testing"
"github.com/stretchr/testify/suite"
)
type TimeoutsTestSuite struct {
suite.Suite
}
func (suite *TimeoutsTestSuite) TestGetConnectionTimeToLive() {
for i := 0; i < 100; i++ {
value := getConnectionTimeToLive()
message := fmt.Sprintf("generated value is %v", value)
suite.GreaterOrEqual(value, ConnectionTimeToLiveMin, message)
suite.LessOrEqual(value, ConnectionTimeToLiveMax, message)
}
}
func (suite *TimeoutsTestSuite) TestGetTimeout() {
for i := 0; i < 100; i++ {
value := getTimeout()
message := fmt.Sprintf("generated value is %v", value)
suite.GreaterOrEqual(value, TimeoutMin, message)
suite.LessOrEqual(value, TimeoutMax, message)
}
}
func TestTimeouts(t *testing.T) {
t.Parallel()
suite.Run(t, &TimeoutsTestSuite{})
}
mtglib/internal/telegram/init.go
+3 -2
View File
@@ -2,7 +2,8 @@ package telegram
import (
"context"
"net"
"github.com/9seconds/mtg/v2/essentials"
)
type preferIP uint8
@@ -82,5 +83,5 @@ var (
)
type Dialer interface {
DialContext(ctx context.Context, network, address string) (net.Conn, error)
DialContext(ctx context.Context, network, address string) (essentials.Conn, error)
}
mtglib/internal/telegram/telegram.go
+4 -3
View File
@@ -3,8 +3,9 @@ package telegram
import (
"context"
"fmt"
"net"
"strings"
"github.com/9seconds/mtg/v2/essentials"
)
type Telegram struct {
@@ -13,7 +14,7 @@ type Telegram struct {
pool addressPool
}
func (t Telegram) Dial(ctx context.Context, dc int) (net.Conn, error) {
func (t Telegram) Dial(ctx context.Context, dc int) (essentials.Conn, error) {
var addresses []tgAddr
switch t.preferIP {
@@ -28,7 +29,7 @@ func (t Telegram) Dial(ctx context.Context, dc int) (net.Conn, error) {
}
var (
conn net.Conn
conn essentials.Conn
err error
)
mtglib/proxy.go
+3 -6
View File
@@ -9,6 +9,7 @@ import (
"sync"
"time"
"github.com/9seconds/mtg/v2/essentials"
"github.com/9seconds/mtg/v2/mtglib/internal/faketls"
"github.com/9seconds/mtg/v2/mtglib/internal/faketls/record"
"github.com/9seconds/mtg/v2/mtglib/internal/obfuscated2"
@@ -25,7 +26,6 @@ type Proxy struct {
allowFallbackOnUnknownDC bool
tolerateTimeSkewness time.Duration
bufferSize int
domainFrontingPort int
workerPool *ants.PoolWithFunc
telegram *telegram.Telegram
@@ -46,7 +46,7 @@ func (p *Proxy) DomainFrontingAddress() string {
// ServeConn serves a connection. We do not check IP blocklist and
// concurrency limit here.
func (p *Proxy) ServeConn(conn net.Conn) {
func (p *Proxy) ServeConn(conn essentials.Conn) {
p.streamWaitGroup.Add(1)
defer p.streamWaitGroup.Done()
@@ -85,7 +85,6 @@ func (p *Proxy) ServeConn(conn net.Conn) {
relay.Relay(
ctx,
ctx.logger.Named("relay"),
p.bufferSize,
ctx.telegramConn,
ctx.clientConn,
)
@@ -276,7 +275,6 @@ func (p *Proxy) doDomainFronting(ctx *streamContext, conn *connRewind) {
relay.Relay(
ctx,
ctx.logger.Named("domain-fronting"),
p.bufferSize,
frontConn,
conn,
)
@@ -306,14 +304,13 @@ func NewProxy(opts ProxyOpts) (*Proxy, error) {
logger: opts.getLogger("proxy"),
domainFrontingPort: opts.getDomainFrontingPort(),
tolerateTimeSkewness: opts.getTolerateTimeSkewness(),
bufferSize: opts.getBufferSize(),
allowFallbackOnUnknownDC: opts.AllowFallbackOnUnknownDC,
telegram: tg,
}
pool, err := ants.NewPoolWithFunc(opts.getConcurrency(),
func(arg interface{}) {
proxy.ServeConn(arg.(net.Conn))
proxy.ServeConn(arg.(essentials.Conn))
},
ants.WithLogger(opts.getLogger("ants")),
ants.WithNonblocking(true))
mtglib/proxy_opts.go
+2 -8
View File
@@ -50,6 +50,8 @@ type ProxyOpts struct {
// buffers: to and from.
//
// This is an optional setting.
//
// Deprecated: this setting is no longer makes any effect.
BufferSize uint
// Concurrency is a size of the worker pool for connection management.
@@ -134,14 +136,6 @@ func (p ProxyOpts) valid() error {
return nil
}
func (p ProxyOpts) getBufferSize() int {
if p.BufferSize < 1 {
return DefaultBufferSize
}
return int(p.BufferSize)
}
func (p ProxyOpts) getConcurrency() int {
if p.Concurrency == 0 {
return DefaultConcurrency
mtglib/stream_context.go
+5 -3
View File
@@ -6,13 +6,15 @@ import (
"encoding/base64"
"net"
"time"
"github.com/9seconds/mtg/v2/essentials"
)
type streamContext struct {
ctx context.Context
ctxCancel context.CancelFunc
clientConn net.Conn
telegramConn net.Conn
clientConn essentials.Conn
telegramConn essentials.Conn
streamID string
dc int
logger Logger
@@ -50,7 +52,7 @@ func (s *streamContext) ClientIP() net.IP {
return s.clientConn.RemoteAddr().(*net.TCPAddr).IP
}
func newStreamContext(ctx context.Context, logger Logger, clientConn net.Conn) *streamContext {
func newStreamContext(ctx context.Context, logger Logger, clientConn essentials.Conn) *streamContext {
connIDBytes := make([]byte, ConnectionIDBytesLength)
if _, err := rand.Read(connIDBytes); err != nil {
mtglib/stream_context_internal_test.go
+3 -3
View File
@@ -12,7 +12,7 @@ import (
type StreamContextTestSuite struct {
suite.Suite
connMock *testlib.NetConnMock
connMock *testlib.EssentialsConnMock
logger NoopLogger
ctx *streamContext
ctxCancel context.CancelFunc
@@ -27,7 +27,7 @@ func (suite *StreamContextTestSuite) SetupTest() {
ctx = context.WithValue(ctx, "key", "value") // nolint: golint, revive, staticcheck
suite.ctxCancel = cancel
suite.connMock = &testlib.NetConnMock{}
suite.connMock = &testlib.EssentialsConnMock{}
addr := &net.TCPAddr{
IP: net.ParseIP("10.0.0.10"),
@@ -73,7 +73,7 @@ func (suite *StreamContextTestSuite) TestClientIP() {
func (suite *StreamContextTestSuite) TestClose() {
suite.connMock.On("Close").Once().Return(nil)
tgConnMock := &testlib.NetConnMock{}
tgConnMock := &testlib.EssentialsConnMock{}
tgConnMock.On("Close").Once().Return(nil)
suite.ctx.telegramConn = tgConnMock
network/circuit_breaker.go
+7 -5
View File
@@ -2,9 +2,10 @@ package network
import (
"context"
"net"
"sync/atomic"
"time"
"github.com/9seconds/mtg/v2/essentials"
)
const (
@@ -30,12 +31,12 @@ type circuitBreakerDialer struct {
resetFailuresTimeout time.Duration
}
func (c *circuitBreakerDialer) Dial(network, address string) (net.Conn, error) {
func (c *circuitBreakerDialer) Dial(network, address string) (essentials.Conn, error) {
return c.DialContext(context.Background(), network, address)
}
func (c *circuitBreakerDialer) DialContext(ctx context.Context,
network, address string) (net.Conn, error) {
network, address string) (essentials.Conn, error) {
switch atomic.LoadUint32(&c.state) {
case circuitBreakerStateClosed:
return c.doClosed(ctx, network, address)
@@ -47,7 +48,7 @@ func (c *circuitBreakerDialer) DialContext(ctx context.Context,
}
func (c *circuitBreakerDialer) doClosed(ctx context.Context,
network, address string) (net.Conn, error) {
network, address string) (essentials.Conn, error) {
conn, err := c.Dialer.DialContext(ctx, network, address)
select {
@@ -78,7 +79,8 @@ func (c *circuitBreakerDialer) doClosed(ctx context.Context,
return conn, err // nolint: wrapcheck
}
func (c *circuitBreakerDialer) doHalfOpened(ctx context.Context, network, address string) (net.Conn, error) {
func (c *circuitBreakerDialer) doHalfOpened(ctx context.Context,
network, address string) (essentials.Conn, error) {
if !atomic.CompareAndSwapUint32(&c.halfOpenAttempts, 0, 1) {
return nil, ErrCircuitBreakerOpened
}
network/circuit_breaker_internal_test.go
+2 -2
View File
@@ -21,7 +21,7 @@ type CircuitBreakerTestSuite struct {
mutex sync.Mutex
ctx context.Context
ctxCancel context.CancelFunc
connMock *testlib.NetConnMock
connMock *testlib.EssentialsConnMock
baseDialerMock *DialerMock
}
@@ -29,7 +29,7 @@ func (suite *CircuitBreakerTestSuite) SetupTest() {
suite.mutex = sync.Mutex{}
suite.ctx, suite.ctxCancel = context.WithCancel(context.Background())
suite.baseDialerMock = &DialerMock{}
suite.connMock = &testlib.NetConnMock{}
suite.connMock = &testlib.EssentialsConnMock{}
suite.d = newCircuitBreakerDialer(suite.baseDialerMock,
3, 100*time.Millisecond, 50*time.Millisecond)
}
network/default.go
+10 -16
View File
@@ -5,19 +5,19 @@ import (
"fmt"
"net"
"time"
"github.com/9seconds/mtg/v2/essentials"
)
type defaultDialer struct {
net.Dialer
bufferSize int
}
func (d *defaultDialer) Dial(network, address string) (net.Conn, error) {
func (d *defaultDialer) Dial(network, address string) (essentials.Conn, error) {
return d.DialContext(context.Background(), network, address)
}
func (d *defaultDialer) DialContext(ctx context.Context, network, address string) (net.Conn, error) {
func (d *defaultDialer) DialContext(ctx context.Context, network, address string) (essentials.Conn, error) {
switch network {
case "tcp", "tcp4", "tcp6": // nolint: goconst
default:
@@ -30,13 +30,13 @@ func (d *defaultDialer) DialContext(ctx context.Context, network, address string
}
// we do not need to call to end user. End users call us.
if err := SetServerSocketOptions(conn, d.bufferSize); err != nil {
if err := SetServerSocketOptions(conn, 0); err != nil {
conn.Close()
return nil, fmt.Errorf("cannot set socket options: %w", err)
}
return conn, nil
return conn.(essentials.Conn), nil
}
// NewDefaultDialer build a new dialer which dials bypassing proxies
@@ -44,26 +44,20 @@ func (d *defaultDialer) DialContext(ctx context.Context, network, address string
//
// The most default one you can imagine. But it has tunes TCP
// connections and setups SO_REUSEPORT.
//
// bufferSize is deprecated and ignored. It is kept here for backward
// compatibility.
func NewDefaultDialer(timeout time.Duration, bufferSize int) (Dialer, error) {
switch {
case timeout < 0:
return nil, fmt.Errorf("timeout %v should be positive number", timeout)
case bufferSize < 0:
return nil, fmt.Errorf("buffer size %d should be positive number", bufferSize)
}
if timeout == 0 {
case timeout == 0:
timeout = DefaultTimeout
}
if bufferSize == 0 {
bufferSize = DefaultBufferSize
}
return &defaultDialer{
Dialer: net.Dialer{
Timeout: timeout,
},
bufferSize: bufferSize,
}, nil
}
network/default_test.go
-5
View File
@@ -30,11 +30,6 @@ func (suite *DefaultDialerTestSuite) TestNegativeTimeout() {
suite.Error(err)
}
func (suite *DefaultDialerTestSuite) TestNegativeBufferSize() {
_, err := network.NewDefaultDialer(0, -1)
suite.Error(err)
}
func (suite *DefaultDialerTestSuite) TestUnsupportedProtocol() {
_, err := suite.d.DialContext(context.Background(),
"udp",
network/init.go
+10 -3
View File
@@ -20,8 +20,9 @@ package network
import (
"context"
"errors"
"net"
"time"
"github.com/9seconds/mtg/v2/essentials"
)
const (
@@ -33,10 +34,16 @@ const (
// request.
DefaultHTTPTimeout = 10 * time.Second
// Deprecated:
//
// DefaultBufferSize defines a TCP buffer size. Both read and write, so
// for real size, please multiply this number by 2.
DefaultBufferSize = 16 * 1024 // 16 kib
// DefaultTCPKeepAlivePeriod defines a time period between 2
// consequitive probes.
DefaultTCPKeepAlivePeriod = 10 * time.Second
// ProxyDialerOpenThreshold is used for load balancing SOCKS5 dialer
// only.
//
@@ -89,6 +96,6 @@ var (
// Dialer defines an interface which is required to bootstrap a network
// instance from.
type Dialer interface {
Dial(network, address string) (net.Conn, error)
DialContext(ctx context.Context, network, address string) (net.Conn, error)
Dial(network, address string) (essentials.Conn, error)
DialContext(ctx context.Context, network, address string) (essentials.Conn, error)
}
network/init_internal_test.go
+5 -5
View File
@@ -2,8 +2,8 @@ package network
import (
"context"
"net"
"github.com/9seconds/mtg/v2/essentials"
"github.com/stretchr/testify/mock"
)
@@ -11,14 +11,14 @@ type DialerMock struct {
mock.Mock
}
func (d *DialerMock) Dial(network, address string) (net.Conn, error) {
func (d *DialerMock) Dial(network, address string) (essentials.Conn, error) {
args := d.Called(network, address)
return args.Get(0).(net.Conn), args.Error(1) // nolint: wrapcheck
return args.Get(0).(essentials.Conn), args.Error(1) // nolint: wrapcheck
}
func (d *DialerMock) DialContext(ctx context.Context, network, address string) (net.Conn, error) {
func (d *DialerMock) DialContext(ctx context.Context, network, address string) (essentials.Conn, error) {
args := d.Called(ctx, network, address)
return args.Get(0).(net.Conn), args.Error(1) // nolint: wrapcheck
return args.Get(0).(essentials.Conn), args.Error(1) // nolint: wrapcheck
}
network/init_test.go
+8 -5
View File
@@ -8,6 +8,7 @@ import (
"net/url"
"strings"
"github.com/9seconds/mtg/v2/essentials"
"github.com/9seconds/mtg/v2/network"
socks5 "github.com/armon/go-socks5"
"github.com/mccutchen/go-httpbin/httpbin"
@@ -18,16 +19,16 @@ type DialerMock struct {
mock.Mock
}
func (d *DialerMock) Dial(network, address string) (net.Conn, error) {
func (d *DialerMock) Dial(network, address string) (essentials.Conn, error) {
args := d.Called(network, address)
return args.Get(0).(net.Conn), args.Error(1) // nolint: wrapcheck
return args.Get(0).(essentials.Conn), args.Error(1) // nolint: wrapcheck
}
func (d *DialerMock) DialContext(ctx context.Context, network, address string) (net.Conn, error) {
func (d *DialerMock) DialContext(ctx context.Context, network, address string) (essentials.Conn, error) {
args := d.Called(ctx, network, address)
return args.Get(0).(net.Conn), args.Error(1) // nolint: wrapcheck
return args.Get(0).(essentials.Conn), args.Error(1) // nolint: wrapcheck
}
type HTTPServerTestSuite struct {
@@ -53,7 +54,9 @@ func (suite *HTTPServerTestSuite) MakeURL(path string) string {
func (suite *HTTPServerTestSuite) MakeHTTPClient(dialer network.Dialer) *http.Client {
return &http.Client{
Transport: &http.Transport{
DialContext: dialer.DialContext,
DialContext: func(ctx context.Context, network, address string) (net.Conn, error) {
return dialer.DialContext(ctx, network, address) // nolint: wrapcheck
},
},
}
}
network/load_balanced_socks5.go
+4 -3
View File
@@ -4,19 +4,20 @@ import (
"context"
"fmt"
"math/rand"
"net"
"net/url"
"github.com/9seconds/mtg/v2/essentials"
)
type loadBalancedSocks5Dialer struct {
dialers []Dialer
}
func (l loadBalancedSocks5Dialer) Dial(network, address string) (net.Conn, error) {
func (l loadBalancedSocks5Dialer) Dial(network, address string) (essentials.Conn, error) {
return l.DialContext(context.Background(), network, address)
}
func (l loadBalancedSocks5Dialer) DialContext(ctx context.Context, network, address string) (net.Conn, error) {
func (l loadBalancedSocks5Dialer) DialContext(ctx context.Context, network, address string) (essentials.Conn, error) {
length := len(l.dialers)
start := rand.Intn(length)
moved := false
network/network.go
+10 -6
View File
@@ -9,6 +9,7 @@ import (
"sync"
"time"
"github.com/9seconds/mtg/v2/essentials"
"github.com/9seconds/mtg/v2/mtglib"
)
@@ -30,11 +31,11 @@ type network struct {
dns *dnsResolver
}
func (n *network) Dial(protocol, address string) (net.Conn, error) {
func (n *network) Dial(protocol, address string) (essentials.Conn, error) {
return n.DialContext(context.Background(), protocol, address)
}
func (n *network) DialContext(ctx context.Context, protocol, address string) (net.Conn, error) {
func (n *network) DialContext(ctx context.Context, protocol, address string) (essentials.Conn, error) {
host, port, _ := net.SplitHostPort(address)
ips, err := n.dnsResolve(protocol, host)
@@ -46,7 +47,8 @@ func (n *network) DialContext(ctx context.Context, protocol, address string) (ne
ips[i], ips[j] = ips[j], ips[i]
})
var conn net.Conn
var conn essentials.Conn
for _, v := range ips {
conn, err = n.dialer.DialContext(ctx, protocol, net.JoinHostPort(v, port))
@@ -59,7 +61,7 @@ func (n *network) DialContext(ctx context.Context, protocol, address string) (ne
}
func (n *network) MakeHTTPClient(dialFunc func(ctx context.Context,
network, address string) (net.Conn, error)) *http.Client {
network, address string) (essentials.Conn, error)) *http.Client {
if dialFunc == nil {
dialFunc = n.DialContext
}
@@ -144,13 +146,15 @@ func NewNetwork(dialer Dialer,
func makeHTTPClient(userAgent string,
timeout time.Duration,
dialFunc func(ctx context.Context, network, address string) (net.Conn, error)) *http.Client {
dialFunc func(ctx context.Context, network, address string) (essentials.Conn, error)) *http.Client {
return &http.Client{
Timeout: timeout,
Transport: networkHTTPTransport{
userAgent: userAgent,
next: &http.Transport{
DialContext: dialFunc,
DialContext: func(ctx context.Context, network, address string) (net.Conn, error) {
return dialFunc(ctx, network, address)
},
},
},
}
network/sockopts.go
+11 -25
View File
@@ -7,41 +7,27 @@ import (
// SetClientSocketOptions tunes a TCP socket that represents a connection to
// end user (not Telegram service or fronting domain).
//
// bufferSize setting is deprecated and ignored.
func SetClientSocketOptions(conn net.Conn, bufferSize int) error {
tcpConn := conn.(*net.TCPConn) // nolint: forcetypeassert
if err := tcpConn.SetNoDelay(false); err != nil {
return fmt.Errorf("cannot disable TCP_NO_DELAY: %w", err)
}
return setCommonSocketOptions(tcpConn, bufferSize)
return setCommonSocketOptions(conn.(*net.TCPConn))
}
// SetServerSocketOptions tunes a TCP socket that represents a connection to
// remote server like Telegram or fronting domain (but not end user).
func SetServerSocketOptions(conn net.Conn, bufferSize int) error {
tcpConn := conn.(*net.TCPConn) // nolint: forcetypeassert
if err := tcpConn.SetNoDelay(true); err != nil {
return fmt.Errorf("cannot enable TCP_NO_DELAY: %w", err)
}
return setCommonSocketOptions(tcpConn, bufferSize)
return setCommonSocketOptions(conn.(*net.TCPConn))
}
func setCommonSocketOptions(conn *net.TCPConn, bufferSize int) error {
if err := conn.SetReadBuffer(bufferSize); err != nil {
return fmt.Errorf("cannot set read buffer size: %w", err)
}
if err := conn.SetWriteBuffer(bufferSize); err != nil {
return fmt.Errorf("cannot set write buffer size: %w", err)
}
if err := conn.SetKeepAlive(false); err != nil {
func setCommonSocketOptions(conn *net.TCPConn) error {
if err := conn.SetKeepAlive(true); err != nil {
return fmt.Errorf("cannot disable TCP keepalive probes: %w", err)
}
if err := conn.SetKeepAlivePeriod(DefaultTCPKeepAlivePeriod); err != nil {
return fmt.Errorf("cannot set time period of TCP keepalive probes: %w", err)
}
if err := conn.SetLinger(tcpLingerTimeout); err != nil {
return fmt.Errorf("cannot set TCP linger timeout: %w", err)
}
@@ -51,7 +37,7 @@ func setCommonSocketOptions(conn *net.TCPConn, bufferSize int) error {
return fmt.Errorf("cannot get underlying raw connection: %w", err)
}
if err := setSocketReuseAddrPort(rawConn, bufferSize); err != nil {
if err := setSocketReuseAddrPort(rawConn); err != nil {
return fmt.Errorf("cannot setup SO_REUSEADDR/PORT: %w", err)
}
network/sockopts_unix.go
+1 -1
View File
@@ -10,7 +10,7 @@ import (
"golang.org/x/sys/unix"
)
func setSocketReuseAddrPort(conn syscall.RawConn, bufferSize int) error {
func setSocketReuseAddrPort(conn syscall.RawConn) error {
var err error
conn.Control(func(fd uintptr) { // nolint: errcheck
network/sockopts_windows.go
+1 -1
View File
@@ -5,6 +5,6 @@ package network
import "syscall"
func setSocketReuseAddrPort(conn syscall.RawConn, bufferSize int) error {
func setSocketReuseAddrPort(conn syscall.RawConn) error {
return nil
}
network/socks5.go
+146 -5
View File
@@ -1,21 +1,162 @@
package network
import (
"context"
"fmt"
"io"
"net"
"net/url"
"golang.org/x/net/proxy"
"github.com/9seconds/mtg/v2/essentials"
"github.com/txthinking/socks5"
)
type socks5Dialer struct {
Dialer
username []byte
password []byte
proxyAddress string
}
func (s socks5Dialer) Dial(network, address string) (essentials.Conn, error) {
return s.DialContext(context.Background(), network, address)
}
func (s socks5Dialer) DialContext(ctx context.Context, network, address string) (essentials.Conn, error) {
switch network {
case "tcp", "tcp4", "tcp6":
default:
return nil, fmt.Errorf("%s network type is not supported", network)
}
conn, err := s.Dialer.DialContext(ctx, network, s.proxyAddress)
if err != nil {
return nil, fmt.Errorf("cannot dial to the proxy: %w", err)
}
if err := s.handshake(conn); err != nil {
conn.Close()
return nil, fmt.Errorf("cannot perform a handshake: %w", err)
}
if err := s.connect(conn, address); err != nil {
conn.Close()
return nil, fmt.Errorf("cannot connect to a destination host %s: %w", address, err)
}
return conn, nil
}
func (s socks5Dialer) handshake(conn io.ReadWriter) error {
authMethod := socks5.MethodUsernamePassword
if len(s.username)+len(s.password) == 0 {
authMethod = socks5.MethodNone
}
if err := s.handshakeNegotiation(conn, authMethod); err != nil {
return fmt.Errorf("cannot perform negotiation: %w", err)
}
if authMethod == socks5.MethodNone {
return nil
}
if err := s.handshakeAuth(conn); err != nil {
return fmt.Errorf("cannot authenticate: %w", err)
}
return nil
}
func (s socks5Dialer) handshakeNegotiation(conn io.ReadWriter, authMethod byte) error {
request := socks5.NewNegotiationRequest([]byte{authMethod})
if _, err := request.WriteTo(conn); err != nil {
return fmt.Errorf("cannot send request: %w", err)
}
response, err := socks5.NewNegotiationReplyFrom(conn)
if err != nil {
return fmt.Errorf("cannot read response: %w", err)
}
if response.Method != authMethod {
return fmt.Errorf("%v is unsupported auth method", authMethod)
}
return nil
}
func (s socks5Dialer) handshakeAuth(conn io.ReadWriter) error {
request := socks5.NewUserPassNegotiationRequest(s.username, s.password)
if _, err := request.WriteTo(conn); err != nil {
return fmt.Errorf("cannot send a request: %w", err)
}
response, err := socks5.NewUserPassNegotiationReplyFrom(conn)
if err != nil {
return fmt.Errorf("cannot read a response: %w", err)
}
if response.Status != socks5.UserPassStatusSuccess {
return fmt.Errorf("authenticate has failed: %v", response.Status)
}
return nil
}
func (s socks5Dialer) connect(conn io.ReadWriter, address string) error {
addrType, host, port, err := socks5.ParseAddress(address)
if err != nil {
return fmt.Errorf("cannot parse address: %w", err)
}
if addrType == socks5.ATYPDomain {
host = host[1:]
}
request := socks5.NewRequest(socks5.CmdConnect, addrType, host, port)
if _, err := request.WriteTo(conn); err != nil {
return fmt.Errorf("cannot send a request: %w", err)
}
response, err := socks5.NewReplyFrom(conn)
if err != nil {
return fmt.Errorf("cannot read a response: %w", err)
}
if response.Rep != socks5.RepSuccess {
return fmt.Errorf("unsuccessful request: %v", response.Rep)
}
return nil
}
// NewSocks5Dialer build a new dialer from a given one (so, in theory
// you can chain here). Proxy parameters are passed with URI in a form of:
//
// socks5://[user:[password]]@host:port
func NewSocks5Dialer(baseDialer Dialer, proxyURL *url.URL) (Dialer, error) {
rv, err := proxy.FromURL(proxyURL, baseDialer)
if err != nil {
return nil, fmt.Errorf("cannot initialize socks5 proxy dialer: %w", err)
if _, _, err := net.SplitHostPort(proxyURL.Host); err != nil {
return nil, fmt.Errorf("incorrect url %s", proxyURL.Redacted())
}
return rv.(Dialer), nil
dialer := socks5Dialer{
Dialer: baseDialer,
proxyAddress: proxyURL.Host,
}
if proxyURL.User != nil {
password, isSet := proxyURL.User.Password()
if isSet {
dialer.username = []byte(proxyURL.User.Username())
dialer.password = []byte(password)
}
}
return dialer, nil
}
network/socks5_test.go
+1 -1
View File
@@ -55,7 +55,7 @@ func (suite *Socks5TestSuite) TestRequestOk() {
suite.Equal(http.StatusOK, resp.StatusCode)
}
func TestSocks5TestSuite(t *testing.T) {
func TestSocks5(t *testing.T) {
t.Parallel()
suite.Run(t, &Socks5TestSuite{})
}