socket.connect()

在给定套接字上启动连接。

¥Initiate a connection on a given socket.

可能的语法有：

¥Possible signatures:

• socket.connect(options[, connectListener])

• socket.connect(path[, connectListener]) 用于 IPC 连接。

  ¥socket.connect(path[, connectListener]) for IPC connections.

• socket.connect(port[, host][, connectListener]) 用于 TCP 连接。

  ¥socket.connect(port[, host][, connectListener]) for TCP connections.

• 返回：<net.Socket> 套接字自身

  ¥Returns: <net.Socket> The socket itself.

这个函数是异步的。建立连接后，将触发 'connect' 事件。如果连接出现问题，而不是 'connect' 事件，将触发 'error' 事件并将错误传递给 'error' 监听器。最后一个参数 connectListener（如果提供）将被添加为 'connect' 事件的监听器一次。

¥This function is asynchronous. When the connection is established, the 'connect' event will be emitted. If there is a problem connecting, instead of a 'connect' event, an 'error' event will be emitted with the error passed to the 'error' listener. The last parameter connectListener, if supplied, will be added as a listener for the 'connect' event once.

此函数只能用于在触发 'close' 后重新连接套接字，否则可能会导致未定义的行为。

¥This function should only be used for reconnecting a socket after 'close' has been emitted or otherwise it may lead to undefined behavior.