python开发实例之python使用Websocket库开发简单聊天工具实例详解(python+Websocket+JS)
最近又回顾了下Websocket，发现已经忘的七七八八了。于是用js写了客户端，用python写了服务端，来复习一下这方面的知识。
先看一下python简单聊天工具最终效果
一个客户端连上服务的并发送消息
另一个客户端连上服务的并发送消息
服务的收到客户端的全部消息并返回消息
一个客户端掉线并不影响其它socket连接
列取全部连接客户端对象和当前发消息的客户端对象
pip install websockets
python简单聊天工具实例源码Python聊天工具服务端#! -*- coding: utf-8 -*-'''Info: Websocket 的使用示例'''import asyncioimport websocketswebsocket_users = set()# 检测客户端权限，用户名密码通过才能退出循环async def check_user_permit(websocket): print('new websocket_users:', websocket) websocket_users.add(websocket) print('websocket_users list:', websocket_users) while True: recv_str = await websocket.recv() cred_dict = recv_str.split(':') if cred_dict[0] == 'admin' and cred_dict[1] == '123456': response_str = 'Congratulation, you have connect with server...' await websocket.send(response_str) print('Password is ok...') return True else: response_str = 'Sorry, please input the username or password...' print('Password is wrong...') await websocket.send(response_str)# 接收客户端消息并处理，这里只是简单把客户端发来的返回回去async def recv_user_msg(websocket): while True: recv_text = await websocket.recv() print('recv_text:', websocket.pong, recv_text) response_text = f'Server return: {recv_text}' print('response_text:', response_text) await websocket.send(response_text)# 服务器端主逻辑async def run(websocket, path): while True: try: await check_user_permit(websocket) await recv_user_msg(websocket) except websockets.ConnectionClosed: print('ConnectionClosed...', path) # 链接断开 print('websocket_users old:', websocket_users) websocket_users.remove(websocket) print('websocket_users new:', websocket_users) break except websockets.InvalidState: print('InvalidState...') # 无效状态 break except Exception as e: print('Exception:', e)if __name__ == ’__main__’: print('127.0.0.1:8181 websocket...') asyncio.get_event_loop().run_until_complete(websockets.serve(run, '127.0.0.1', 8181)) asyncio.get_event_loop().run_forever()python简单聊天工具客户端代码Html+Js
<!-- Websocket 的使用示例 --><!DOCTYPE html><html lang='en'><head> <meta charset='UTF-8'> <title>测试Socket——ws://127.0.0.1:8181</title> <script> var socket; if ('WebSocket' in window) { var ws = new WebSocket('ws://127.0.0.1:8181/test'); socket = ws; ws.onopen = function() {console.log(’连接成功’);alert('连接成功, 请输入账号和密码'); }; ws.onmessage = function(evt) {var received_msg = evt.data;document.getElementById('showMes').value+=received_msg+'n'; }; ws.onclose = function() {alert('断开了连接'); }; } else { alert('浏览器不支持WebSocket'); } function sendMeg(){ var message=document.getElementById('name').value+':'+document.getElementById('mes').value; document.getElementById('showMes').value+=message+'nn'; socket.send(message); } </script></head><body> <textarea rows='3' cols='30' style='width:300px;height:500px;'></textarea> <br/> <label>名称</label> <input type='text' /> <br/> <label>消息</label> <input type='text' /> <button onclick='sendMeg();'>发送</button></body></html>
本文主要介绍了python使用Websocket库开发简单聊天工具实例详细，更多关于python Websocket库开发知识请查看下面的相关链接
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