事件：'connection'

¥Event: 'connection'

• socket <stream.Duplex>

当建立新的 TCP 流时会触发此事件。socket 通常是 net.Socket 类型的对象。通常用户不会想访问这个事件。

¥This event is emitted when a new TCP stream is established. socket is typically an object of type net.Socket. Usually users will not want to access this event.

此事件也可以由用户显式触发，以将连接注入 HTTP 服务器。在这种情况下，任何 Duplex 流都可以通过。

¥This event can also be explicitly emitted by users to inject connections into the HTTP server. In that case, any Duplex stream can be passed.