Question

我们在端口80上有一个使用HttpListener的项目。它在生产和开发中完美地适用于.net 3.5。出于依赖性原因，我们必须将其迁移到.net 4.5.1。该项目在开发中运行良好，但在我们投入Azure时则不行。

升级的另一部分是从IIS 7.5迁移到IIS 8。

该应用程序的主要代码。首先是基础监听器：

public abstract class BaseHttpListener
{
    private IPEndPoint HttpEndPoint;
    private IPEndPoint HttpsEndPoint;
    private HttpListener Listener;


    protected BaseHttpListener(IPEndPoint http, IPEndPoint https = null)
    {
        HttpEndPoint = http;
        HttpsEndPoint = https;
    }

    public void Start()
    {
        var thread = new System.Threading.Thread(new System.Threading.ThreadStart(Listen));
        thread.Start();
    }

    private void Listen()
    {
        // Create a HTTP listener. 
        Listener = new System.Net.HttpListener();
        Listener.Prefixes.Add(String.Format("http://{0}/", HttpEndPoint));

        if (HttpsEndPoint != null)
        {
            Listener.Prefixes.Add(String.Format("https://{0}/", HttpsEndPoint));
        }

        Listener.Start();

        while (Listener.IsListening)
        {
            var context = Listener.BeginGetContext(ListenerCallback, Listener);
            context.AsyncWaitHandle.WaitOne();
        }
    }        

    private void ListenerCallback(IAsyncResult ar)
    {
        var httpListener = ar.AsyncState as HttpListener;
        if (httpListener.IsListening == false)
            return;

        var context = httpListener.EndGetContext(ar);
        try
        {
            Process(context);
        }
        catch (Exception exception)
        {
            LogManager.Instance.Fatal(exception, String.Concat("Fatal exception occurs when try to process '", context.Request.Url.ToString(), "'"));

            //We should try to send a error to the client
            context.Response.StatusCode = (int)System.Net.HttpStatusCode.InternalServerError;
           context.Response.StatusDescription = System.Net.HttpStatusCode.InternalServerError.ToString();
           context.Response.Close();
        }
    }

    protected abstract void Process(HttpListenerContext context);

    public void Stop()
    {
        Listener.Prefixes.Clear();
        Listener.Close();
    }

简单的索引处理程序：

   public class IndexRequestHandler : RequestHandler
{
    public IndexRequestHandler(String handledPath)
        : base(handledPath)
    {

    }

    public override void HandleRequest(System.Net.HttpListenerContext context)
    {
        var html = @"<!doctype html>
                    <html lang='en>'
                        <head>
                            <meta charset='utf-8'>
                            <title>It's ready</title>
                        </head>
                        <body>
                            <h1>It's ready</h1>
                        </body>
                    </html>";
        var bytes = System.Text.Encoding.UTF8.GetBytes(html);
        context.Response.ContentLength64 = bytes.LongLength;
        context.Response.ContentType = "text/html;charset=UTF-8";

        try
        {
            context.Response.OutputStream.Write(bytes, 0, bytes.Length);
            context.Response.Close();
        }
        catch (Exception ex)
        {
            LogManager.Instance.Error(ex, "IndexRequestHandler.HandleRequest");
        }
    }
}

如果需要，我可以给你其他例子。

另一个重要的事情是我运行一个cmd命令：telnet X.X.X.X 80它返回给我一些但是当我在chrome中测试http://X.X.X.X时，我什么都没得到

感谢您的帮助！

从3.5迁移到.net 4.5.1后，HttpListener出现问题

0 个答案: