mpd.py 文件源码

def _connect_tcp(self, host, port):
        try:
            flags = socket.AI_ADDRCONFIG
        except AttributeError:
            flags = 0
        err = None
        for res in socket.getaddrinfo(host, port, socket.AF_UNSPEC,
                                      socket.SOCK_STREAM, socket.IPPROTO_TCP,
                                      flags):
            af, socktype, proto, canonname, sa = res
            sock = None
            try:
                sock = socket.socket(af, socktype, proto)
                sock.setsockopt(socket.SOL_SOCKET, socket.SO_KEEPALIVE, 1)
                sock.settimeout(self.timeout)
                sock.connect(sa)
                return sock
            except socket.error as e:
                err = e
                if sock is not None:
                    sock.close()
        if err is not None:
            raise err
        else:
            raise ConnectionError("getaddrinfo returns an empty list")