FILE / ScuroNeko/mtg

mtglib/internal/doppel/scout_conn.go

Исходный файл и его история в репозитории.
FILE cc4b6ce2f49d7e6c3f989c6ddae830339ff9ac87
Files
mtg/mtglib/internal/doppel/scout_conn.go
T
Alexey Dolotov 9dfd992c1d Move cert noise calibration into doppelganger scout
Instead of a separate cert_probe.go that duplicates the scout's TLS
connection logic, measure the cert chain size directly from the same
HTTPS connections the scout already makes.

Changes:
- Extend ScoutConnResult with payloadLen field
- Add Write interception to ScoutConn for handshake boundary detection
- Scout.learn() now computes cert size (sum of ApplicationData between
  CCS and first client Write) alongside inter-record durations
- Ganger aggregates cert sizes across raids and exposes NoiseParams()
  via atomic pointer for lock-free reads from proxy goroutines
- Proxy reads NoiseParams from Ganger on each handshake instead of
  probing at startup
- Remove cert_probe.go, disk cache, and related config options
  (noise-cache-path, noise-cache-ttl, noise-probe-count)

Falls back to legacy 2500-4700 range until the first scout raid
completes (typically within 1-2 seconds of startup).
2026-03-27 16:34:42 +03:00

71 lines
1.2 KiB
Go

package doppel
import (
"bytes"
"encoding/binary"
"io"
"github.com/9seconds/mtg/v2/essentials"
"github.com/9seconds/mtg/v2/mtglib/internal/tls"
)
type ScoutConn struct {
tls.Conn
results *ScoutConnCollected
rawBuf *bytes.Buffer
seenCCS bool
}
func (s *ScoutConn) Read(p []byte) (int, error) {
buf := &bytes.Buffer{}
for {
if n, err := s.rawBuf.Read(p); err == nil {
return n, nil
}
s.rawBuf.Reset()
recordType, length, err := tls.ReadRecord(s.Conn, buf)
if err != nil {
return 0, err
}
if recordType == tls.TypeChangeCipherSpec {
s.seenCCS = true
}
s.results.Add(recordType, int(length))
s.rawBuf.Write([]byte{recordType})
s.rawBuf.Write(tls.TLSVersion[:])
if err := binary.Write(s.rawBuf, binary.BigEndian, uint16(length)); err != nil {
return 0, err
}
if _, err := io.Copy(s.rawBuf, buf); err != nil {
return 0, err
}
}
}
func (s *ScoutConn) Write(p []byte) (int, error) {
if s.seenCCS {
s.results.MarkWrite()
}
return s.Conn.Write(p)
}
func NewScoutConn(conn essentials.Conn, results *ScoutConnCollected) *ScoutConn {
rawBuf := &bytes.Buffer{}
rawBuf.Grow(tls.MaxRecordSize)
return &ScoutConn{
Conn: tls.New(conn, false, false),
results: results,
rawBuf: rawBuf,
}
}