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)

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

先安装websockets

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 asyncio
import websockets

websocket_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

  
  
  


  
  

  名称
  
  

  消息
  
  发送

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