81 lines
1.5 KiB
Go
81 lines
1.5 KiB
Go
package tproxy
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import (
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"net"
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"github.com/Dreamacro/clash/adapter/inbound"
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C "github.com/Dreamacro/clash/constant"
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"github.com/Dreamacro/clash/transport/socks5"
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)
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type Listener struct {
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listener net.Listener
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addr string
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closed bool
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}
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// RawAddress implements C.Listener
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func (l *Listener) RawAddress() string {
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return l.addr
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}
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// Address implements C.Listener
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func (l *Listener) Address() string {
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return l.listener.Addr().String()
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}
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// Close implements C.Listener
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func (l *Listener) Close() error {
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l.closed = true
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return l.listener.Close()
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}
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func (l *Listener) handleTProxy(conn net.Conn, in chan<- C.ConnContext, additions ...inbound.Addition) {
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target := socks5.ParseAddrToSocksAddr(conn.LocalAddr())
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conn.(*net.TCPConn).SetKeepAlive(true)
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in <- inbound.NewSocket(target, conn, C.TPROXY, additions...)
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}
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func New(addr string, in chan<- C.ConnContext, additions ...inbound.Addition) (*Listener, error) {
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if len(additions) == 0 {
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additions = []inbound.Addition{
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inbound.WithInName("DEFAULT-TPROXY"),
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inbound.WithSpecialRules(""),
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}
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}
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l, err := net.Listen("tcp", addr)
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if err != nil {
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return nil, err
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}
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tl := l.(*net.TCPListener)
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rc, err := tl.SyscallConn()
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if err != nil {
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return nil, err
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}
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err = setsockopt(rc, addr)
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if err != nil {
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return nil, err
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}
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rl := &Listener{
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listener: l,
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addr: addr,
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}
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go func() {
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for {
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c, err := l.Accept()
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if err != nil {
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if rl.closed {
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break
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}
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continue
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}
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go rl.handleTProxy(c, in, additions...)
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}
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}()
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return rl, nil
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}
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