rest.py 文件源码

def create_connection(address):
    host, port = address
    err = None
    for res in socket.getaddrinfo(host, port, 0, socket.SOCK_STREAM):
        af, socktype, proto, _, sa = res
        sock = None
        try:
            sock = socket.socket(af, socktype, proto)
            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  # pylint: disable=raising-bad-type
    else:
        raise socket.error("getaddrinfo returns an empty list")