python-websocket-server hacking

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/*************************************************************************
 *                  python-websocket-server hacking
 * 说明:
 *     跟一下python-websocket-server怎么使用,这个lib还算是目前想用的。
 *                              
 *                                      2017-10-6 深圳 南山平山村 曾剑锋
 ************************************************************************/

一、参考文档:
    https://github.com/ZengjfOS/python-websocket-server

二、client.html
    <html>
    <head>
      <title>Simple client</title>
    
      <script type="text/javascript">
    
        var ws;
        
        function init() {
    
          // Connect to Web Socket
          ws = new WebSocket("ws://localhost:9001/");
    
          // Set event handlers.
          // 连接WebSocket服务器成功,打开成功
          ws.onopen = function() {
            output("onopen");
          };
          
          // 收到WebSocket服务器数据
          ws.onmessage = function(e) {
            // e.data contains received string.
            output("onmessage: " + e.data);
          };
          
          // 关闭WebSocket连接
          ws.onclose = function() {
            output("onclose");
          };
    
          // WebSocket连接出现错误
          ws.onerror = function(e) {
            output("onerror");
            console.log(e)
          };
    
        }
        
        // 将当前文本框中的内容发送到WebSocket
        function onSubmit() {
          var input = document.getElementById("input");
          // You can send message to the Web Socket using ws.send.
          ws.send(input.value);
          output("send: " + input.value);
          input.value = "";
          input.focus();
        }
        
        // 关闭WebSocket连接
        function onCloseClick() {
          ws.close();
        }
        
        // 在界面上显示接收到的数据,将替换掉一些需要转义的字符
        function output(str) {
          var log = document.getElementById("log");
          var escaped = str.replace(/&/, "&amp;").replace(/</, "&lt;").
            replace(/>/, "&gt;").replace(/"/, "&quot;"); // "
          log.innerHTML = escaped + "<br>" + log.innerHTML;
        }
    
      </script>
    </head>
    
    <!-- 文档加载完毕之后,会调用init函数进行处理 -->
    <body onload="init();">
      <!-- 点击submit之后,调用onSubmit函数 -->
      <form onsubmit="onSubmit(); return false;">
        <!-- 发送数据的输入框 -->
        <input type="text" id="input">
        <input type="submit" value="Send">
        <!-- 点击关闭按钮关闭WebSocket连接 -->
        <button onclick="onCloseClick(); return false;">close</button>
      </form>
      <!-- 显示发送、接收到数据 -->
      <div id="log"></div>
    </body>
    </html>

三、server.py
    # 加载WebsocketServer模块
    from websocket_server import WebsocketServer
    
    # Called for every client connecting (after handshake)
    def new_client(client, server):
        print("New client connected and was given id %d" % client[id])
        # 发送给所有的连接
        server.send_message_to_all("Hey all, a new client has joined us")
    
    
    # Called for every client disconnecting
    def client_left(client, server):
        print("Client(%d) disconnected" % client[id])
    
    
    # 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))
    
        # 发送给所有的连接
        server.send_message_to_all(message)
    
    
    # Server Port
    PORT=9001
    # 创建Websocket Server
    server = WebsocketServer(PORT)
    # 有设备连接上了
    server.set_fn_new_client(new_client)
    # 断开连接
    server.set_fn_client_left(client_left)
    # 接收到信息
    server.set_fn_message_received(message_received)
    # 开始监听
    server.run_forever()

 

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