WebSocket.ReceiveAsync throws exceptions

[NVentimiglia]

I am porting over my networking library to dotnetcore. My websocket transport is nearly identical, except I am using Kestrel instead of an HTTP Listener. When I call ReceiveAsync, I get request aborted exceptions. If I add an arbitrary yield, the error changes to a NRE.

        public Task<WebSocketReceiveResult> ReadAsync()
        {
            buffer = new ArraySegment<byte>(BufferFactory.Rent(BufferFactory.MAXIMUM_SIZE));

            //THROWS HERE
            return webSocket.ReceiveAsync(buffer, CancellationToken.None);
        }


        public async void Update()
        {
            try
            {
                 // await Task.Yeild; // arbitrary yield for exception 2.

                //THROWS HERE
                var received = await ReadAsync();

                while (webSocket != null && received.MessageType != WebSocketMessageType.Close)
                {
                    if (received.MessageType == WebSocketMessageType.Binary)
                    {
                        OnDataReceive(this, buffer.Array);
                        received = await ReadAsync();
                    }
                }
            }
            catch (Exception ex)
            {
                OnException(this, ex);
            }
            finally
            {
                Close();
            }
        }

Without the yield I get this exception

The request was aborted

When I add the yield my exception changes to this

Cannot access a disposed object.\r\nObject name: 'FrameRequestStream'.

Stack Trace

" at Microsoft.AspNetCore.Server.Kestrel.Http.SocketInput.GetResult()\r\n at Microsoft.AspNetCore.Server.Kestrel.Http.SocketInputExtensions.d__1.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at Microsoft.AspNetCore.WebSockets.Protocol.CommonWebSocket.d__38.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at Microsoft.AspNetCore.WebSockets.Protocol.CommonWebSocket.d__37.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at Microsoft.AspNetCore.WebSockets.Protocol.CommonWebSocket.d__36.MoveNext()\r\n--- End of stack trace from previous location where exception was thrown ---\r\n at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()\r\n at Signaling.Server.Ws.WSConnection.d__35.MoveNext() in G:\Drive\Avarice\Foundation\Foundation.Signaling\Signaling\Signaling.Server.Ws\WSConnection.cs:line 67"

ClientSide I am using Websocket4Net and WebsocketSharp

[Tratcher]

Change public async void Update() to public async Task Update() and make sure the caller awaits it.

[NVentimiglia]

That was it, thanks =)