python開(kāi)發(fā)實(shí)例之python使用Websocket庫(kù)開(kāi)發(fā)簡(jiǎn)單聊天工具實(shí)例詳解(python+Websocket+JS)
最近又回顧了下Websocket，發(fā)現(xiàn)已經(jīng)忘的七七八八了。于是用js寫(xiě)了客戶端，用python寫(xiě)了服務(wù)端，來(lái)復(fù)習(xí)一下這方面的知識(shí)。
先看一下python簡(jiǎn)單聊天工具最終效果
一個(gè)客戶端連上服務(wù)的并發(fā)送消息
另一個(gè)客戶端連上服務(wù)的并發(fā)送消息
服務(wù)的收到客戶端的全部消息并返回消息
一個(gè)客戶端掉線并不影響其它socket連接
列取全部連接客戶端對(duì)象和當(dāng)前發(fā)消息的客戶端對(duì)象
pip install websockets
python簡(jiǎn)單聊天工具實(shí)例源碼Python聊天工具服務(wù)端#! -*- coding: utf-8 -*-'''Info: Websocket 的使用示例'''import asyncioimport websocketswebsocket_users = set()# 檢測(cè)客戶端權(quán)限，用戶名密碼通過(guò)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(jiǎn)單把客戶端發(fā)來(lái)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(wù)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(kāi) print('websocket_users old:', websocket_users) websocket_users.remove(websocket) print('websocket_users new:', websocket_users) break except websockets.InvalidState: print('InvalidState...') # 無(wú)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(jiǎn)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(cè)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(qǐng)輸入賬號(hào)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(kāi)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(kù)開(kāi)發(fā)簡(jiǎn)單聊天工具實(shí)例詳細(xì)，更多關(guān)于python Websocket庫(kù)開(kāi)發(fā)知識(shí)請(qǐng)查看下面的相關(guān)鏈接
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