IAsyncResult BeginGetContextCore(EventTraceActivity eventTraceActivity)
{
using (LockHelper.TakeReaderLock(this.listenerRWLock))
{
if (this.listener == null)
{
return(null);
}
return(this.listener.BeginGetContext(onGetContext, eventTraceActivity));
}
}
bool EnqueueContext(IAsyncResult listenerContextResult)
{
EventTraceActivity eventTraceActivity = null;
HttpListenerContext listenerContext;
bool enqueued = false;
if (FxTrace.Trace.IsEnd2EndActivityTracingEnabled)
{
eventTraceActivity = (EventTraceActivity)listenerContextResult.AsyncState;
if (eventTraceActivity == null)
{
eventTraceActivity = EventTraceActivity.GetFromThreadOrCreate(true);
}
}
using (LockHelper.TakeReaderLock(this.listenerRWLock))
{
if (this.listener == null)
{
return(true);
}
listenerContext = this.listener.EndGetContext(listenerContextResult);
}
// Grab the activity from the context and set that as the surrounding activity.
// If a message appears, we will transfer to the message's activity next
using (DiagnosticUtility.ShouldUseActivity ? ServiceModelActivity.BoundOperation(this.Activity) : null)
{
ServiceModelActivity activity = DiagnosticUtility.ShouldUseActivity ? ServiceModelActivity.CreateBoundedActivityWithTransferInOnly(listenerContext.Request.RequestTraceIdentifier) : null;
try
{
if (activity != null)
{
StartReceiveBytesActivity(activity, listenerContext.Request.Url);
}
if (DiagnosticUtility.ShouldTraceInformation)
{
TraceUtility.TraceHttpConnectionInformation(listenerContext.Request.LocalEndPoint.ToString(),
listenerContext.Request.RemoteEndPoint.ToString(), this);
}
base.TraceMessageReceived(eventTraceActivity, this.ListenUri);
HttpChannelListener channelListener;
if (base.TryLookupUri(listenerContext.Request.Url,
listenerContext.Request.HttpMethod,
this.HostNameComparisonMode,
listenerContext.Request.IsWebSocketRequest,
out channelListener))
{
HttpRequestContext context = HttpRequestContext.CreateContext(channelListener, listenerContext, eventTraceActivity);
IAsyncResult httpContextReceivedResult = channelListener.BeginHttpContextReceived(context,
onMessageDequeued,
onContextReceived,
DiagnosticUtility.ShouldUseActivity ? (object)new ActivityHolder(activity, context) : (object)context);
if (httpContextReceivedResult.CompletedSynchronously)
{
enqueued = EndHttpContextReceived(httpContextReceivedResult);
}
else
{
// The callback has been enqueued.
enqueued = true;
}
}
else
{
HandleMessageReceiveFailed(listenerContext);
}
}
finally
{
if (DiagnosticUtility.ShouldUseActivity && activity != null)
{
if (!enqueued)
{
// Error during enqueuing
activity.Dispose();
}
}
}
}
return(enqueued);
}