| 440 | } |
| 441 | |
| 442 | func defaultReplyPacketForwardAddress(_ context.Context, destinationAddr string, packet net.PacketConn, conn net.Conn) (net.IP, int, error) { |
| 443 | udpLocal := packet.LocalAddr() |
| 444 | udpLocalAddr, ok := udpLocal.(*net.UDPAddr) |
| 445 | if !ok { |
| 446 | return nil, 0, fmt.Errorf("connect to %v failed: local address is %s://%s", destinationAddr, udpLocal.Network(), udpLocal.String()) |
| 447 | } |
| 448 | |
| 449 | tcpLocal := conn.LocalAddr() |
| 450 | tcpLocalAddr, ok := tcpLocal.(*net.TCPAddr) |
| 451 | if !ok { |
| 452 | return nil, 0, fmt.Errorf("connect to %v failed: local address is %s://%s", destinationAddr, tcpLocal.Network(), tcpLocal.String()) |
| 453 | } |
| 454 | return tcpLocalAddr.IP, udpLocalAddr.Port, nil |
| 455 | } |