Exemplo n.º 1
0
func (r *Remote) serveConn(conn net.Conn) {
	var (
		addr   proxy.Addr
		err    error
		remote net.Conn
	)
	defer func() {
		if remote != nil {
			remote.Close()
		}
		if conn != nil {
			conn.Close()
		}
	}()

	conn, addr, err = r.tunnel.Server(conn)
	if err != nil {
		if err != io.EOF && !isConnClosed(err) {
			r.log.Error(log.M{"msg": "parse tunnel request failed", "err": err.Error(), "remote": conn.RemoteAddr().String()})
		}
		return
	}

	addrStr := addr.String()
	remote, err = net.Dial("tcp", addrStr)
	if err != nil {
		r.log.Error(log.M{"msg": "connect to dst server failed", "err": err.Error(), "addr": addrStr})
		return
	}

	go PipeCloseDst(remote, conn, r.log)
	PipeCloseDst(conn, remote, r.log)
	conn = nil
	remote = nil
}
Exemplo n.º 2
0
func (l *Local) dial(addr proxy.Addr) (conn net.Conn, isTunnel bool, err error) {
	host := string(addr.Host)
	l.log.Info(log.M{"addr_type": addr.Type, "host": host, "port": addr.Port})
	if host := string(addr.Host); l.isDirectConnect(host) {
		conn, err = net.Dial("tcp", addr.String())
		if err == nil {
			if l.log.IsDebugEnable() {
				l.log.Debug(log.M{"connect_mode": "direct", "host": host})
			}
			return conn, false, nil
		}

		l.log.Error(log.M{"msg": "direct connect failed, try tunnel.", "host": host, "err": err.Error()})
	}

	// tunnel
	tunnel := l.randTunnel()
	conn, err = net.Dial("tcp", tunnel.Addr())
	if err == nil {
		conn, err = tunnel.Client(conn, addr)
		if err != nil {
			l.log.Error(log.M{"msg": "tunnel handshake failed", "addr": tunnel.Addr(), "err": err.Error()})
		}
	} else {
		l.log.Error(log.M{"msg": "connect tunnel server failed", "addr": tunnel.Addr(), "err": err.Error()})
	}
	return conn, true, err
}