c# - 从firefox扩展名连接到C#应用程序中的localhost服务器

Question

我使用的是firefox扩展程序，它每次加载新页面时都会检查一次，当它加载时，它会向C#程序中的Web服务器发送握手请求。我的问题是服务器永远不会收到请求。有人可以指出我正确的方向，因为我认为我做错了什么。谢谢

function examplePageLoad(event) {

  if (event.originalTarget instanceof HTMLDocument) {

    var win = event.originalTarget.defaultView;

    if (win.frameElement) {


  var socket = new WebSocket('127.0.0.1:13000');
        socket.onopen = function() {
            alert('handshake successfully established. May send data now...');
        };
        socket.onclose = function() {
            alert('connection closed');
        };
    }

  }

}


window.addEventListener("load", function () {

  gBrowser.addEventListener("load", examplePageLoad, true);

}, false);

在C#中:

 public void acceptClient()
        {
            TcpListener server = null;
            try
            {
                // Set the TcpListener on port 13000.
                Int32 port = 13000;
                IPAddress localAddr = IPAddress.Parse("127.0.0.1");

                // TcpListener server = new TcpListener(port);
                server = new TcpListener(localAddr, port);

                // Start listening for client requests.
                server.Start();

                // Buffer for reading data
                Byte[] bytes = new Byte[256];


                // Enter the listening loop.
                while (true)
                {
                    Console.Write("Waiting for a connection... ");

                    // Perform a blocking call to accept requests.
                    // You could also user server.AcceptSocket() here.
                    TcpClient client = server.AcceptTcpClient();
                    Console.WriteLine("Event was fired!");


                    UserModel um = new UserModel();

                    um.maintainUserModel(); //method uses to maintain user model

                }
            }
            catch (SocketException e)
            {
                Console.WriteLine("SocketException: {0}", e);
            }
            finally
            {
                // Stop listening for new clients.
                server.Stop();
            }

        }

Answer 1

您在浏览器中使用哪个IP来访问该页面？回送还是本地IP？必须是相同的AFAIK。

在C#中使用回送地址时，无需查找它。只需使用IPAddress.Loopback即可。

除此之外，您的服务器没有任何问题。

旁注:

um.maintainUserModel(); //method uses to maintain user model

请不要写这样的评论。这只是实际代码的重复。它不会增加任何值，它所做的只是使代码文件困惑。

更新

这个脚本可以很好地连接:

<script type="text/javascript">
    function examplePageLoad(event) {
        if ("WebSocket" in window) {
            var ws = new WebSocket("ws://localhost:13000/");
            ws.onopen = function() {
                alert('Sending');
                ws.send("message to send");
            }
            ws.onmessage = function (evt) { 
                alert('Received: ' + evt.data);
            };
            ws.onclose = function() { // websocket is closed. 
            };

            alert('readystate: ' + ws.readyState + " for " + ws.URL);
        }
        else
            alert('Not supported');
    }

    if (window.addEventListener) {
        window.addEventListener("load", examplePageLoad, true);
    }
</script>