tornado websocket
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-8 import os.path import tornado.httpserver import tornado.web import tornado.ioloop import tornado.options import tornado.httpclient import tornado.websocket import json class IndexHandler(tornado.web.RequestHandler): def get(self): self.render("index.html") class SocketHandler(tornado.websocket.WebSocketHandler): """docstring for SocketHandler""" clients = set() @staticmethod def 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, }) ##MAIN if __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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