HttpListener - ListenerError - PoolEmptyException

[mjtvulcan]

I'm using the HttpListener process. I'm load testing to check stability. Basically firing one request after another, and then multiple sessions firing multiple requests. I'm finding that the HttpListener triggers a ListenerError event - this seems to be caused by the following exception:

Griffin.Net.Buffers.PoolEmptyException

At this point the listening stops, and no further requests can be made.

From digging through the source I can see this is to do with thread safe concurrentstack use - just can't see the fix.

My code is pretty straight forward... var listenerInternal = new Griffin.Net.Protocols.Http.HttpListener(); listenerInternal.MessageReceived += OnMessageReceived; listenerInternal.ListenerError += OnListenerError; listenerInternal.MessageSent += OnMessageSent; listenerInternal.BodyDecoder = new Serializers.PlainTextSerializer();

` private static void OnMessageReceived(ITcpChannel channel, object message) { try { //Thread.CurrentThread.Name = string.Format("{0}:{1}", DateTime.Now.ToShortDateString(), messageCounter); Thread.CurrentThread.Name = Guid.NewGuid().ToString("N"); var request = (HttpRequest)message;

            log.InfoFormat("{0} {1}", request.HttpMethod, request.StatusLine);
            bool internalRequest = clsUtils.IsLocalIpAddress((System.Net.IPEndPoint)request.RemoteEndPoint); //ignore this one
            internalRequest = clsUtils.isIPLocal(((System.Net.IPEndPoint)request.RemoteEndPoint).Address);

            var response = (HttpResponse)request.CreateResponse();
            using (RequestHandler r = new RequestHandler(ref channel, ref message, internalRequest))
            {
                response = r.getResponse();
                channel.Send(response);
                if (request.HttpVersion == "HTTP/1.0")
                    channel.Close();
                r.waitForTasks();
            }

The RequestHandler has been super simplified to just return something quick and meaningless public RequestHandler(ref ITcpChannel channel, ref object message, bool internalRequest) { var incomingMessage = new IncomingMessage(); var data = ""; var NVP = new System.Collections.Specialized.NameValueCollection(); request = (HttpRequest)message; response = (HttpResponse)request.CreateResponse();

        ////////////////////////////////////////////////
        response.StatusCode = (int)HttpStatusCode.OK;
        response.Body = new MemoryStream(Encoding.UTF8.GetBytes(string.Format("Up and running\nProcessed {0} requests", requestCount)));
        response.ContentType = "text/plain";
        return;
    }`

I'm using the latest Griffin.Framework nuget v2.1.1 Can you see where i'm going wrong?

It looks like either a process that should be cleaning up isn't, or i'm just doing too much - In these recent tests, it probably amounts to 7 sessions processing 20 or so requests one after the other.

Thanks for your help.

[jgauffin]

My new networking code is almost done. It will solve many of the concurrency issues that existed with the old code.

Here is a same on how the new http server is configured:

https://github.com/jgauffin/Griffin.Framework/blob/new_networking_code/src/Griffin.Framework/HttpServerTests/Program.cs

(Although it's not working just yet, I'm going through all tests now)