proto.py 文件源码

def correct_header(self, header, auth, sock, **kw):
        try:
            buf = sock.getsockopt(socket.SOL_IP, SO_ORIGINAL_DST, 16)
            assert len(buf) == 16
            remote = (socket.inet_ntoa(buf[4:8]), int.from_bytes(buf[2:4], 'big'))
            assert sock.getsockname() != remote
        except Exception:
            return False
        return auth and header == auth[:1] or not auth