socket.connect()

在给定的套接字上启动一个连接。

可能的签名：

• socket.connect(options[, connectListener])
• socket.connect(path[, connectListener]) 用于 IPC 连接。
• socket.connect(port[, host][, connectListener]) 用于 TCP 连接。
• 返回: <net.Socket> socket 自身。

该方法是异步的。当连接建立了的时候，'connect' 事件将会被触发。如果连接过程中有问题，'error' 事件将会代替 'connect' 事件被触发，并将错误信息传递给 'error' 监听器。 最后一个参数 connectListener，如果指定了，将会被添加为 'connect' 事件的监听器。

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

Initiate a connection on a given socket.

Possible signatures:

• socket.connect(options[, connectListener])
• socket.connect(path[, connectListener]) for IPC connections.
• socket.connect(port[, host][, connectListener]) for TCP connections.
• Returns: <net.Socket> The socket itself.

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.

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