Only the first request works

Hi! I’m trying to use HttpTwo with APNS (development server). Any first request (POST, Connect, Ping) is processed successfully, but, after that, any other request except Disconnect fails with error of broken connection from the remote party.

var store = new X509Store("MY", StoreLocation.CurrentUser);
            Http2Client request2 = null;
            try
            {
                store.Open(OpenFlags.ReadOnly | OpenFlags.OpenExistingOnly);
                var myCert =
                    store.Certificates.Find(X509FindType.FindBySubjectName, "Apple Development IOS Push Services", false)
                        .OfType<X509Certificate2>()
                        .FirstOrDefault();
                //var uri = new Uri("https://api.development.push.apple.com");
                var path =
                    new Uri(
                        "https://api.development.push.apple.com/3/device/somedeviceId");
                request2 = new Http2Client(path, myCert != null ? new X509Certificate2Collection(myCert) : null);                
                store.Close();
                var stream1 = new MemoryStream();
                var notif = new Notification {Aps = new Aps {Alert = "Hello", Sound = "default"}};
                var ser = new DataContractJsonSerializer(typeof (Notification));
                ser.WriteObject(stream1, notif);
                stream1.Position = 0;
                var response = await request2.Send(path, HttpMethod.Post, null, stream1);

Every new request in the same process (even made with new Http2Client instance) is refused by server. What do I do wrong?

[Mazeror]

Hello! I spent couple of days, trying to make this lib working. Core problems of this lib:

1. wrong using of TPL-pattern (lock, symaphore, events, configure.await - all together!). Fristofall, rewrite it to event-based OR tpl model (as you wish).
2. Re-esteblishing new connection for every push message. It’s wrong, and apple doesn’t like it (as mentioned above). (StreamManager.cs, method Get)
3. http2 library drops hpack’s dynamic table every frame (Utils.cs, method UnpackHeaders) => can’t parse headers from second and next packets.
4. no re-connect when GOAWAY o RSTCHANNEL frames are received.

This will be enought for working solution.

Performance also is very pure, but it’s much easyer: change Lists to byte arrays in Frames.

[meisterm]

Are there any solutions yet? I have the same problem firing more than one request to the Server. For example the first Post Command: 11:09:06.326 PM: -> [Frame: SETTINGS, Id=0, Ack=False, HeaderTableSize=, EnablePush=, MaxConcurrentStreams=, InitialWindowSize=, MaxFrameSize=, MaxHeaderListSize=] 11:09:06.332 PM: <- [Frame: SETTINGS, Id=0, Ack=False, HeaderTableSize=, EnablePush=, MaxConcurrentStreams=, InitialWindowSize=, MaxFrameSize=, MaxHeaderListSize=] 11:09:06.348 PM: -> [Frame: SETTINGS, Id=0, Ack=True, HeaderTableSize=, EnablePush=, MaxConcurrentStreams=, InitialWindowSize=, MaxFrameSize=, MaxHeaderListSize=] 11:09:06.355 PM: -> [Frame: HEADERS, Id=1, EndStream=False, EndHeaders=True, Priority=False, Weight=0, Padded=False, PadLength=0, HeaderBlockFragmentLength=144] 11:09:06.357 PM: -> [Frame: DATA, Id=1, EndStream=True, Padded=False, PadLength=0, PayloadLength=96] 11:09:06.499 PM: <- [Frame: SETTINGS, Id=0, Ack=True, HeaderTableSize=, EnablePush=, MaxConcurrentStreams=, InitialWindowSize=, MaxFrameSize=, MaxHeaderListSize=] 11:09:06.519 PM: <- [Frame: HEADERS, Id=1, EndStream=False, EndHeaders=True, Priority=False, Weight=0, Padded=False, PadLength=0, HeaderBlockFragmentLength=37] 11:09:06.520 PM: <- [Frame: DATA, Id=1, EndStream=True, Padded=False, PadLength=0, PayloadLength=27] 11:09:06.533 PM: -> [Frame: WINDOW_UPDATE, Id=0, WindowSizeIncrement=27] 11:09:06.540 PM: -> [Frame: GOAWAY, Id=0, ErrorCode=0, LastStreamId=0, AdditionalDebugData=]

This is a connection to Apple Push Notification Service. The Server sends me a goaway frame. But why?

The next post request looks like this:

11:09:29.147 PM: <- [Frame: SETTINGS, Id=0, Ack=False, HeaderTableSize=, EnablePush=, MaxConcurrentStreams=, InitialWindowSize=, MaxFrameSize=, MaxHeaderListSize=] 11:09:29.149 PM: -> [Frame: SETTINGS, Id=0, Ack=True, HeaderTableSize=, EnablePush=, MaxConcurrentStreams=, InitialWindowSize=, MaxFrameSize=, MaxHeaderListSize=] 11:09:29.150 PM: -> [Frame: SETTINGS, Id=0, Ack=False, HeaderTableSize=, EnablePush=, MaxConcurrentStreams=, InitialWindowSize=, MaxFrameSize=, MaxHeaderListSize=] 11:09:29.150 PM: -> [Frame: HEADERS, Id=1, EndStream=False, EndHeaders=True, Priority=False, Weight=0, Padded=False, PadLength=0, HeaderBlockFragmentLength=144] 11:09:29.150 PM: -> [Frame: DATA, Id=1, EndStream=True, Padded=False, PadLength=0, PayloadLength=96] 11:09:29.311 PM: <- [Frame: GOAWAY, Id=0, ErrorCode=1, LastStreamId=0, AdditionalDebugData=First received frame was not SETTINGS. Hex dump for first 5 bytes: 0000000401]