167 lines
3.2 KiB
Go
167 lines
3.2 KiB
Go
package fwd
|
||
|
||
import (
|
||
"bufio"
|
||
"errors"
|
||
"fmt"
|
||
"github.com/google/uuid"
|
||
"io"
|
||
"log/slog"
|
||
"net"
|
||
"proxy-server/gateway/debug"
|
||
"proxy-server/gateway/env"
|
||
"proxy-server/gateway/fwd/metrics"
|
||
"proxy-server/pkg/utils"
|
||
"strconv"
|
||
"sync"
|
||
"time"
|
||
)
|
||
|
||
func (s *Service) listenData() error {
|
||
dataPort := env.AppDataPort
|
||
slog.Debug("监听数据通道", slog.Uint64("port", uint64(dataPort)))
|
||
|
||
// 监听端口
|
||
ls, err := net.Listen("tcp", ":"+strconv.Itoa(int(dataPort)))
|
||
if err != nil {
|
||
return fmt.Errorf("监听数据通道失败: %w", err)
|
||
}
|
||
defer utils.Close(ls)
|
||
|
||
// 异步等待连接
|
||
var connCh = make(chan net.Conn)
|
||
go func() {
|
||
for {
|
||
conn, err := ls.Accept()
|
||
if errors.Is(err, net.ErrClosed) {
|
||
slog.Debug("数据通道监听关闭")
|
||
return
|
||
}
|
||
if err != nil {
|
||
slog.Error("接受数据通道连接失败", "err", err)
|
||
return
|
||
}
|
||
select {
|
||
case connCh <- conn:
|
||
case <-s.ctx.Done():
|
||
utils.Close(conn)
|
||
return
|
||
}
|
||
}
|
||
}()
|
||
|
||
// 处理连接
|
||
for {
|
||
select {
|
||
case <-s.ctx.Done():
|
||
return nil
|
||
case conn := <-connCh:
|
||
s.dataConnWg.Add(1)
|
||
go func() {
|
||
defer s.dataConnWg.Done()
|
||
defer utils.Close(conn)
|
||
err := s.processDataConn(conn)
|
||
if err != nil {
|
||
slog.Error("处理数据通道连接失败", "err", err)
|
||
}
|
||
}()
|
||
}
|
||
}
|
||
}
|
||
|
||
func (s *Service) processDataConn(client net.Conn) error {
|
||
var reader = bufio.NewReader(client)
|
||
|
||
// 接收连接结果
|
||
var buf = make([]byte, 17)
|
||
_, err := io.ReadFull(reader, buf)
|
||
if err != nil {
|
||
return fmt.Errorf("从客户端获取连接结果失败: %w", err)
|
||
}
|
||
|
||
tag := buf[0:16]
|
||
status := buf[16]
|
||
|
||
// 加载用户连接
|
||
var tagStr = uuid.UUID(tag).String()
|
||
user, ok := s.userConnMap.LoadAndDelete(tagStr)
|
||
if !ok {
|
||
return fmt.Errorf("用户连接已关闭，tag：%s", tagStr)
|
||
}
|
||
defer utils.Close(user)
|
||
|
||
// 检查状态
|
||
if status != 1 {
|
||
return errors.New("目标地址建立连接失败")
|
||
}
|
||
|
||
// 转发数据
|
||
data := time.Now()
|
||
|
||
userPipeReader, userPipeWriter := io.Pipe()
|
||
defer utils.Close(userPipeWriter)
|
||
|
||
teeUser := io.TeeReader(user, userPipeWriter)
|
||
go func() {
|
||
err := analysisAndLog(user, userPipeReader)
|
||
if err != nil {
|
||
slog.Error("数据解析失败", "err", err)
|
||
}
|
||
}()
|
||
|
||
wg := sync.WaitGroup{}
|
||
wg.Add(2)
|
||
go func() {
|
||
defer wg.Done()
|
||
_, err := io.Copy(client, teeUser)
|
||
if err != nil {
|
||
slog.Error("数据转发失败 user->client", "err", err)
|
||
}
|
||
}()
|
||
go func() {
|
||
defer wg.Done()
|
||
_, err := io.Copy(user, reader)
|
||
if err != nil {
|
||
slog.Error("数据转发失败 client->user", "err", err)
|
||
}
|
||
}()
|
||
|
||
select {
|
||
|
||
case <-s.ctx.Done():
|
||
return nil
|
||
|
||
case <-utils.WgWait(&wg):
|
||
proxy := time.Now()
|
||
|
||
start, startOk := metrics.TimerStart.Load(user.Conn)
|
||
auth, authOk := metrics.TimerAuth.Load(user.Conn)
|
||
|
||
var authDuration time.Duration
|
||
if startOk && authOk {
|
||
authDuration = auth.(time.Time).Sub(start.(time.Time))
|
||
}
|
||
|
||
var dataDuration time.Duration
|
||
if authOk {
|
||
dataDuration = data.Sub(auth.(time.Time))
|
||
}
|
||
|
||
proxyDuration := proxy.Sub(data)
|
||
|
||
var totalDuration time.Duration
|
||
if startOk {
|
||
totalDuration = proxy.Sub(start.(time.Time))
|
||
}
|
||
|
||
debug.ConsumingCh <- debug.Consuming{
|
||
Auth: authDuration,
|
||
Data: dataDuration,
|
||
Proxy: proxyDuration,
|
||
Total: totalDuration,
|
||
}
|
||
|
||
return nil
|
||
}
|
||
}
|