mirror of
https://github.com/TeaOSLab/EdgeNode.git
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102 lines
2.3 KiB
Go
102 lines
2.3 KiB
Go
// Copyright 2021 Liuxiangchao iwind.liu@gmail.com. All rights reserved.
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package nodes
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import (
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"github.com/TeaOSLab/EdgeCommon/pkg/nodeconfigs"
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teaconst "github.com/TeaOSLab/EdgeNode/internal/const"
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"github.com/TeaOSLab/EdgeNode/internal/ratelimit"
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"net"
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"sync"
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"sync/atomic"
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"time"
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)
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// ClientConn 客户端连接
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type ClientConn struct {
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once sync.Once
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globalLimiter *ratelimit.Counter
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isTLS bool
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hasRead bool
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BaseClientConn
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}
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func NewClientConn(conn net.Conn, isTLS bool, quickClose bool, globalLimiter *ratelimit.Counter) net.Conn {
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if quickClose {
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// TCP
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tcpConn, ok := conn.(*net.TCPConn)
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if ok {
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// TODO 可以在配置中设置此值
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_ = tcpConn.SetLinger(nodeconfigs.DefaultTCPLinger)
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}
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}
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return &ClientConn{BaseClientConn: BaseClientConn{rawConn: conn}, isTLS: isTLS, globalLimiter: globalLimiter}
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}
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func (this *ClientConn) Read(b []byte) (n int, err error) {
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if this.isTLS {
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if !this.hasRead {
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_ = this.rawConn.SetReadDeadline(time.Now().Add(time.Duration(nodeconfigs.DefaultTLSHandshakeTimeout) * time.Second)) // TODO 握手超时时间可以设置
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this.hasRead = true
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defer func() {
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_ = this.rawConn.SetReadDeadline(time.Time{})
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}()
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}
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}
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n, err = this.rawConn.Read(b)
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if n > 0 {
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atomic.AddUint64(&teaconst.InTrafficBytes, uint64(n))
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}
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return
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}
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func (this *ClientConn) Write(b []byte) (n int, err error) {
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n, err = this.rawConn.Write(b)
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if n > 0 {
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atomic.AddUint64(&teaconst.OutTrafficBytes, uint64(n))
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}
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return
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}
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func (this *ClientConn) Close() error {
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this.isClosed = true
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err := this.rawConn.Close()
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// 全局并发数限制
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this.once.Do(func() {
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if this.globalLimiter != nil {
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this.globalLimiter.Release()
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}
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})
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// 单个服务并发数限制
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sharedClientConnLimiter.Remove(this.rawConn.RemoteAddr().String())
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return err
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}
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func (this *ClientConn) LocalAddr() net.Addr {
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return this.rawConn.LocalAddr()
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}
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func (this *ClientConn) RemoteAddr() net.Addr {
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return this.rawConn.RemoteAddr()
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}
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func (this *ClientConn) SetDeadline(t time.Time) error {
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return this.rawConn.SetDeadline(t)
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}
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func (this *ClientConn) SetReadDeadline(t time.Time) error {
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return this.rawConn.SetReadDeadline(t)
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}
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func (this *ClientConn) SetWriteDeadline(t time.Time) error {
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return this.rawConn.SetWriteDeadline(t)
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}
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