tornado websocket

来源：互联网发布：matlab编程stephen 编辑：程序博客网时间：2024/04/29 23:52

最近在网上找了些websocket的资料看了下，node和tornado等等本身已经实现了websocket的封装，所以使用起来会比较简单，php如果想要写websocket还需要自己跑一整套流程，比较麻烦。

根据网上的资料写了一个简单的websocket的demo，果真炫酷掉渣天，我是用tornado，网上多是实现实时聊天室的例子，想要实现点对点的聊天功能还需要在send函数那里加条件，目测是根据浏览器用户的id去判断的。代码如下：

服务端代码：

#!/usr/bin/python#coding:utf-8import os.pathimport tornado.httpserverimport tornado.webimport tornado.ioloopimport tornado.optionsimport tornado.httpclientimport tornado.websocketimport jsonclass IndexHandler(tornado.web.RequestHandler):def get(self):self.render("index.html")class SocketHandler(tornado.websocket.WebSocketHandler):"""docstring for SocketHandler"""clients = set()@staticmethoddef send_to_all(message):    for c in SocketHandler.clients:        c.write_message(json.dumps(message))def open(self):    self.write_message(json.dumps({        'type': 'sys',        'message': 'Welcome to WebSocket',    }))    SocketHandler.send_to_all({        'type': 'sys',        'message': str(id(self)) + ' has joined',    })    SocketHandler.clients.add(self)def on_close(self):    SocketHandler.clients.remove(self)    SocketHandler.send_to_all({        'type': 'sys',        'message': str(id(self)) + ' has left',    })def on_message(self, message):SocketHandler.send_to_all({            'type': 'user',            'id': id(self),            'message': message,        })##MAINif __name__ == '__main__':app = tornado.web.Application(handlers=[(r"/", IndexHandler),(r"/chat", SocketHandler)],debug = True,template_path = os.path.join(os.path.dirname(__file__), "templates"),        static_path = os.path.join(os.path.dirname(__file__), "static"))app.listen(8000)tornado.ioloop.IOLoop.instance().start()

客户端代码：

<html><head><script type="text/javascript">var ws = new WebSocket("ws://localhost:8000/chat");ws.onmessage = function(event) {console.log(event);}function send() {ws.send(document.getElementById('chat').value );}</script></head><body><div>hello<input id="chat"><button  onclick="send()">send</button></div></body></html>

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