websocket实现简单的单聊
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1 import json 2 3 from flask import Flask, request, render_template 4 5 from geventwebsocket.handler import WebSocketHandler 6 from gevent.pywsgi import WSGIServer 7 from geventwebsocket.websocket import WebSocket 8 9 app = Flask(__name__) 10 11 user_socket_dict = {} 12 13 14 @app.route(‘/conn_ws<suer>‘) 15 def ws_app(suer): 16 # print(request.environ) 17 18 user_socket = request.environ.get(‘wsgi.websocket‘) # type: WebSocket 19 user_socket_dict[suer] = user_socket 20 print(len(user_socket_dict), list(user_socket_dict)) 21 while True: 22 msg = user_socket.receive() 23 msg_dict = json.loads(msg) 24 to_user = msg_dict.get(‘to_user‘) 25 to_user_socket = user_socket_dict.get(to_user) 26 to_user_socket.send(msg) 27 28 29 @app.route(‘/index‘) 30 def index(): 31 return render_template(‘my_dws.html‘) 32 33 34 if __name__ == ‘__main__‘: 35 http_serv = WSGIServer((‘0.0.0.0‘, 9527), app, handler_class=WebSocketHandler) 36 37 http_serv.serve_forever()
1 <!DOCTYPE html> 2 <html lang="en"> 3 <head> 4 <meta charset="UTF-8"> 5 <title>Title</title> 6 </head> 7 <body> 8 <p> 9 <input type="text" id="nick"> 10 <button onclick="login()">登录聊天</button> 11 </p> 12 13 发送给：<input type="text" id="to_user"> 14 消息：<input type="text" id="send_str"> 15 <button id="send_btn" onclick="send()">发送消息</button> 16 17 <p> 18 19 <div id="chat_list"></div> 20 21 </p> 22 </body> 23 <script type="application/javascript"> 24 var ws = null; 25 26 function login() { 27 var nick = document.getElementById(‘nick‘).value; 28 ws = new WebSocket(‘ws://192.168.11.67:9527/conn_ws‘ + nick); 29 ws.onmessage = function (messageEvent) { 30 console.log(messageEvent.data); 31 var ptag = document.createElement(‘p‘); 32 var message = JSON.parse(messageEvent.data); 33 34 ptag.innerText = message.from_user + ‘:‘ + message.message; 35 document.getElementById(‘chat_list‘).appendChild(ptag); 36 }; 37 } 38 39 function send() { 40 var message = document.getElementById(‘send_str‘).value; 41 var send_str = { 42 from_user: document.getElementById(‘nick‘).value, 43 to_user: document.getElementById(‘to_user‘).value, 44 message: message 45 }; 46 var json_send_str = JSON.stringify(send_str); 47 ws.send(json_send_str); 48 } 49 </script> 50 </html>
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