tcp_connection.py 文件源码

def connect(self, host, port):
        self.__state = CONNECTION_STATE.DISCONNECTED
        self.__fileno = None
        self.__socket = socket.socket(_getAddrType(host), socket.SOCK_STREAM)
        self.__socket.setsockopt(socket.SOL_SOCKET, socket.SO_SNDBUF, self.__sendBufferSize)
        self.__socket.setsockopt(socket.SOL_SOCKET, socket.SO_RCVBUF, self.__recvBufferSize)
        self.__socket.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, 1)
        self.__socket.setblocking(0)
        self.__readBuffer = bytes()
        self.__writeBuffer = bytes()
        self.__lastReadTime = time.time()

        try:
            self.__socket.connect((host, port))
        except socket.error as e:
            if e.errno not in (socket.errno.EINPROGRESS, socket.errno.EWOULDBLOCK):
                return False
        self.__fileno = self.__socket.fileno()
        self.__state = CONNECTION_STATE.CONNECTING
        self.__poller.subscribe(self.__fileno,
                                 self.__processConnection,
                                 POLL_EVENT_TYPE.READ | POLL_EVENT_TYPE.WRITE | POLL_EVENT_TYPE.ERROR)
        return True