76 lines
1.5 KiB
Go
76 lines
1.5 KiB
Go
package tunnel
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import (
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"fmt"
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"net"
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"github.com/Dreamacro/clash/adapter/inbound"
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N "github.com/Dreamacro/clash/common/net"
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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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target socks5.Addr
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proxy 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) handleTCP(conn net.Conn, tunnel C.Tunnel, additions ...inbound.Addition) {
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N.TCPKeepAlive(conn)
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ctx := inbound.NewSocket(l.target, conn, C.TUNNEL, additions...)
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ctx.Metadata().SpecialProxy = l.proxy
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tunnel.HandleTCPConn(ctx)
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}
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func New(addr, target, proxy string, tunnel C.Tunnel, additions ...inbound.Addition) (*Listener, error) {
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l, err := inbound.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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targetAddr := socks5.ParseAddr(target)
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if targetAddr == nil {
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return nil, fmt.Errorf("invalid target address %s", target)
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}
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rl := &Listener{
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listener: l,
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target: targetAddr,
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proxy: proxy,
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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.handleTCP(c, tunnel, additions...)
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}
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}()
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return rl, nil
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}
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