async Task <RequestCommandAndStream> ReceiveRequestBodyOverControlAsync(ListenerCommand.RequestCommand requestCommand)
{
Stream requestStream = null;
if (requestCommand.Body.Value)
{
// We need to buffer this body stream so we can let go of the listener control connection
requestStream = new MemoryStream(BufferSize);
using (var cts = new CancellationTokenSource(this.OperationTimeout))
{
var buffer = new ArraySegment <byte>(new byte[BufferSize]);
var readResult = await WebSocketUtility.ReadMessageAsync(this.controlWebSocket, buffer, requestStream, cts.Token).ConfigureAwait(false);
if (readResult.MessageType == WebSocketMessageType.Close)
{
throw RelayEventSource.Log.ThrowingException(new InvalidOperationException(SR.EntityClosedOrAborted), this);
}
else if (readResult.MessageType != WebSocketMessageType.Binary)
{
throw RelayEventSource.Log.ThrowingException(
new ProtocolViolationException(SR.GetString(SR.InvalidType, WebSocketMessageType.Binary, readResult.MessageType)), this);
}
requestStream.Position = 0;
}
}
return(new RequestCommandAndStream(requestCommand, requestStream));
}
void InvokeRequestHandler(RequestCommandAndStream requestAndStream)
{
ListenerCommand.RequestCommand requestCommand = requestAndStream.RequestCommand;
Uri requestUri = new Uri(this.listener.Address, requestCommand.RequestTarget);
var listenerContext = new RelayedHttpListenerContext(
this.listener,
requestUri,
requestCommand.Id,
requestCommand.Method,
requestCommand.RequestHeaders);
listenerContext.Request.SetRemoteAddress(requestCommand.RemoteEndpoint);
listenerContext.Response.StatusCode = HttpStatusCode.OK;
listenerContext.Response.OutputStream = new ResponseStream(this, listenerContext);
RelayEventSource.Log.HybridHttpRequestReceived(listenerContext.TrackingContext, requestCommand.Method);
Stream requestStream = requestAndStream.Stream;
if (requestStream != null)
{
listenerContext.Request.HasEntityBody = true;
listenerContext.Request.InputStream = requestStream;
}
var requestHandler = this.listener.RequestHandler;
if (requestHandler != null)
{
try
{
RelayEventSource.Log.HybridHttpInvokingUserRequestHandler();
requestHandler(listenerContext);
}
catch (Exception userException) when(!Fx.IsFatal(userException))
{
RelayEventSource.Log.HandledExceptionAsWarning(this, userException);
listenerContext.Response.StatusCode = HttpStatusCode.InternalServerError;
listenerContext.Response.StatusDescription = this.TrackingContext.EnsureTrackableMessage(SR.RequestHandlerException);
listenerContext.Response.CloseAsync().Fork(this);
return;
}
}
else
{
RelayEventSource.Log.HybridHttpConnectionMissingRequestHandler();
listenerContext.Response.StatusCode = HttpStatusCode.NotImplemented;
listenerContext.Response.StatusDescription = this.TrackingContext.EnsureTrackableMessage(SR.RequestHandlerMissing);
listenerContext.Response.CloseAsync().Fork(this);
}
}
void InvokeRequestHandler(RequestCommandAndStream requestAndStream)
{
ListenerCommand.RequestCommand requestCommand = requestAndStream.RequestCommand;
Uri requestUri = new Uri(this.listener.Address, requestCommand.RequestTarget);
var listenerContext = new RelayedHttpListenerContext(
this.listener,
requestUri,
requestCommand.Id,
requestCommand.Method,
requestCommand.RequestHeaders);
listenerContext.Request.SetRemoteAddress(requestCommand.RemoteEndpoint);
listenerContext.Response.StatusCode = HttpStatusCode.OK;
listenerContext.Response.OutputStream = new ResponseStream(this, listenerContext);
RelayEventSource.Log.HybridHttpRequestReceived(listenerContext.TrackingContext, requestCommand.Method);
Stream requestStream = requestAndStream.Stream;
if (requestStream != null)
{
listenerContext.Request.HasEntityBody = true;
listenerContext.Request.InputStream = requestStream;
}
var requestHandler = this.listener.RequestHandler;
if (requestHandler != null)
{
try
{
RelayEventSource.Log.HybridHttpInvokingUserRequestHandler();
requestHandler(listenerContext);
}
catch (Exception userException) when(!Fx.IsFatal(userException))
{
RelayEventSource.Log.Warning(
listenerContext,
$"The Relayed Listener's custom RequestHandler threw an exception. {listenerContext.TrackingContext}, Exception: {userException}");
return;
}
}
else
{
RelayEventSource.Log.HandledExceptionAsWarning(this, new InvalidOperationException("RequestHandler is not set."));
}
}
public static async Task CreateAsync(HybridConnectionListener listener, ListenerCommand.RequestCommand requestCommand, WebSocket controlWebSocket)
{
var hybridHttpConnection = new HybridHttpConnection(listener, controlWebSocket, requestCommand.Address);
// In this method we're holding up the listener's control connection.
// Do only what we need to do (receive any request body from control channel) and then let this Task complete.
bool requestOverControlConnection = requestCommand.Body.HasValue;
var requestAndStream = new RequestCommandAndStream(requestCommand, null);
if (requestOverControlConnection)
{
requestAndStream = await hybridHttpConnection.ReceiveRequestBodyOverControlAsync(requestCommand).ConfigureAwait(false);
}
// ProcessFirstRequestAsync runs without blocking the listener control connection:
Task.Run(() => hybridHttpConnection.ProcessFirstRequestAsync(requestAndStream)).Fork(hybridHttpConnection);
}
public RequestCommandAndStream(ListenerCommand.RequestCommand requestCommand, Stream stream)
{
this.RequestCommand = requestCommand;
this.Stream = stream;
}
