websocket 初步使用经验(python)

  • 想实现网页前端和后端的数据同步交互,就有必要使用 websocket 的方式进行通信。

  • python websocket github 地址:[email protected]:Aplexchenfl/python-websocket-server.git

  • 下载之后:

    ECM_5412@chenfl:/var/www/html$ ls
    client.html  README.md  server.py  setup.py  tests  websocket_server
  • 其中,服务端的代码如下:

    vim server.py
    from websocket_server import WebsocketServer                                    
     // 当新的客户端连接时会提示                                                                        
    # Called for every client connecting (after handshake)                          
    def new_client(client, server):                                                 
            print("New client connected and was given id %d" % client['id'])        
            server.send_message_to_all("Hey all, a new client has joined us")          
                                                                                
     // 当旧的客户端离开                                                                         
    # Called for every client disconnecting                                         
    def client_left(client, server):                                                
            print("Client(%d) disconnected" % client['id'])                         
                                                                                
    // 接收客户端的信息。                                                                             
    # Called when a client sends a message                                          
    def message_received(client, server, message):                                  
            if len(message) > 200:                                                  
                    message = message[:200]+'..'                                    
            print("Client(%d) said: %s" % (client['id'], message))                  
                                                                                
                                                                                
    PORT=9001                                                                       
    server = WebsocketServer(PORT, "0.0.0.0")                                       
    server.set_fn_new_client(new_client)                                            
    server.set_fn_client_left(client_left)                                          
    server.set_fn_message_received(message_received)                                
    server.run_forever()
    // 通过 python3  启动这个客户端
    python3  server.py
  • 客户端代码如下:

                                                                          
                                                                          
    Simple client                                                
                                                                                
                                                                       
                                                                         
                                                         
    
    //  通过网页启动客户端。

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