python開發(fā)實例之python使用Websocket庫開發(fā)簡單聊天工具實例詳解(python+Websocket+JS)
最近又回顧了下Websocket，發(fā)現已經忘的七七八八了。于是用js寫了客戶端，用python寫了服務端，來復習一下這方面的知識。
先看一下python簡單聊天工具最終效果
一個客戶端連上服務的并發(fā)送消息
另一個客戶端連上服務的并發(fā)送消息
服務的收到客戶端的全部消息并返回消息
一個客戶端掉線并不影響其它socket連接
列取全部連接客戶端對象和當前發(fā)消息的客戶端對象
pip install websockets
python簡單聊天工具實例源碼Python聊天工具服務端#! -*- coding: utf-8 -*-'''Info: Websocket 的使用示例'''import asyncioimport websocketswebsocket_users = set()# 檢測客戶端權限，用戶名密碼通過才能退出循環(huán)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)# 接收客戶端消息并處理，這里只是簡單把客戶端發(fā)來的返回回去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)# 服務器端主邏輯async def run(websocket, path): while True: try: await check_user_permit(websocket) await recv_user_msg(websocket) except websockets.ConnectionClosed: print('ConnectionClosed...', path) # 鏈接斷開 print('websocket_users old:', websocket_users) websocket_users.remove(websocket) print('websocket_users new:', websocket_users) break except websockets.InvalidState: print('InvalidState...') # 無效狀態(tài) 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簡單聊天工具客戶端代碼Html+Js
<!-- Websocket 的使用示例 --><!DOCTYPE html><html lang='en'><head> <meta charset='UTF-8'> <title>測試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(’連接成功’);alert('連接成功, 請輸入賬號和密碼'); }; ws.onmessage = function(evt) {var received_msg = evt.data;document.getElementById('showMes').value+=received_msg+'n'; }; ws.onclose = function() {alert('斷開了連接'); }; } else { alert('瀏覽器不支持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>名稱</label> <input type='text' /> <br/> <label>消息</label> <input type='text' /> <button onclick='sendMeg();'>發(fā)送</button></body></html>
本文主要介紹了python使用Websocket庫開發(fā)簡單聊天工具實例詳細，更多關于python Websocket庫開發(fā)知識請查看下面的相關鏈接
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