internal HttpListenerAsyncResult BeginGetContext(HttpListenerAsyncResult asyncResult)
{
CheckDisposed ();
if (_prefixes.Count == 0)
throw new InvalidOperationException ("The listener has no URI prefix on which listens.");
if (!_listening)
throw new InvalidOperationException ("The listener hasn't been started.");
// Lock _waitQueue early to avoid race conditions.
lock (_waitQueueSync) {
lock (_ctxQueueSync) {
var ctx = getContextFromQueue ();
if (ctx != null) {
asyncResult.Complete (ctx, true);
return asyncResult;
}
}
_waitQueue.Add (asyncResult);
}
return asyncResult;
}
