HTTP
http.client.request.start
request<http.ClientRequest>
当客户端开始请求时触发。
¥Emitted when client starts a request.
http.client.response.finish
- 
request<http.ClientRequest> - 
response<http.IncomingMessage> 
当客户端收到响应时触发。
¥Emitted when client receives a response.
http.server.request.start
- 
request<http.IncomingMessage> - 
response<http.ServerResponse> - 
socket<net.Socket> - 
server<http.Server> 
当服务器收到请求时触发。
¥Emitted when server receives a request.
http.server.response.finish
- 
request<http.IncomingMessage> - 
response<http.ServerResponse> - 
socket<net.Socket> - 
server<http.Server> 
服务器发送响应时触发。
¥Emitted when server sends a response.