[Mono-dev] HttpListener hangs with r106513

[Casey Marshall]

I've noticed that it recent SVN mono snapshots (r106513) using
HttpListener and WebRequest in the same process hangs. This doesn't hang
with 1.9.1, and didn't with less recent snapshots.

I haven't tried having the client and server in different processes, and
don't know if it reproduces there.

Test case:


using System;
using System.IO;
using System.Net;
using System.Threading;

class simplehttp
{
        public static void Main(string[] argv)
        {
                simplehttp sh = new simplehttp();
                Thread srv = new Thread(new ThreadStart(sh.ServerMain));
                srv.Name = "HttpServer";
                srv.Start();

                for (;;)
                {
                        HttpWebRequest req = (HttpWebRequest) WebRequest.Create ("http://localhost:8888/foobar/");
                        req.ServicePoint.Expect100Continue = false;
                        req.ServicePoint.UseNagleAlgorithm = false;
                        req.Method = "POST";
                        StreamWriter w = new StreamWriter(req.GetRequestStream());
                        w.WriteLine("Hello, server!");
                        w.Close();

                        HttpWebResponse resp = (HttpWebResponse) req.GetResponse();
                        StreamReader r = new StreamReader(resp.GetResponseStream());
                        System.Console.WriteLine("client reads: {0}", r.ReadToEnd());
                        r.Close();
                }
        }

        private void ServerMain()
        {
                HttpListener listener = new HttpListener();
                listener.Prefixes.Add("http://*:8888/foobar/");
                listener.Start();
                while (true)
                {
                        HttpListenerContext ctx = listener.GetContext();
                        ThreadPool.QueueUserWorkItem(new WaitCallback(HandleConnection), ctx);
                }
        }

        private void HandleConnection(object state)
        {
                HttpListenerContext ctx = (HttpListenerContext) state;
                HttpListenerRequest req = ctx.Request;
                StreamReader r = new StreamReader(req.InputStream);
                System.Console.WriteLine ("server reads {0}", r.ReadToEnd());

                HttpListenerResponse resp = ctx.Response;
                StreamWriter o = new StreamWriter(resp.OutputStream);
                o.WriteLine("Hello, world!");
                o.Close();
        }
}

Thanks.