private static void IOCompleted(ListenerAsyncResult asyncResult, uint errorCode, uint numBytes)
{
object result = null;
try
{
GlobalLog.Print("ListenerAsyncResult#" + ValidationHelper.HashString(asyncResult) + "::WaitCallback() errorCode:[" + errorCode.ToString() + "] numBytes:[" + numBytes.ToString() + "]");
if (errorCode != UnsafeNclNativeMethods.ErrorCodes.ERROR_SUCCESS &&
errorCode != UnsafeNclNativeMethods.ErrorCodes.ERROR_MORE_DATA)
{
asyncResult.ErrorCode = (int)errorCode;
result = new HttpListenerException((int)errorCode);
}
else
{
HttpListener httpWebListener = asyncResult.AsyncObject as HttpListener;
if (errorCode == UnsafeNclNativeMethods.ErrorCodes.ERROR_SUCCESS)
{
// at this point we have received an unmanaged HTTP_REQUEST and memoryBlob
// points to it we need to hook up our authentication handling code here.
bool stoleBlob = false;
try
{
if (httpWebListener.ValidateRequest(asyncResult.m_RequestContext))
{
result = httpWebListener.HandleAuthentication(asyncResult.m_RequestContext, out stoleBlob);
}
}
finally
{
if (stoleBlob)
{
// The request has been handed to the user, which means this code can't reuse the blob. Reset it here.
asyncResult.m_RequestContext = result == null ? new AsyncRequestContext(asyncResult) : null;
}
else
{
asyncResult.m_RequestContext.Reset(0, 0);
}
}
}
else
{
asyncResult.m_RequestContext.Reset(asyncResult.m_RequestContext.RequestBlob->RequestId, numBytes);
}
// We need to issue a new request, either because auth failed, or because our buffer was too small the first time.
if (result == null)
{
uint statusCode = asyncResult.QueueBeginGetContext();
if (statusCode != UnsafeNclNativeMethods.ErrorCodes.ERROR_SUCCESS &&
statusCode != UnsafeNclNativeMethods.ErrorCodes.ERROR_IO_PENDING)
{
// someother bad error, possible(?) return values are:
// ERROR_INVALID_HANDLE, ERROR_INSUFFICIENT_BUFFER, ERROR_OPERATION_ABORTED
result = new HttpListenerException((int)statusCode);
}
}
if (result == null)
{
return;
}
}
// complete the async IO and invoke the callback
GlobalLog.Print("ListenerAsyncResult#" + ValidationHelper.HashString(asyncResult) + "::WaitCallback() calling Complete()");
}
catch (Exception exception)
{
if (NclUtilities.IsFatal(exception))
{
throw;
}
if (Logging.On)
{
Logging.PrintError(Logging.HttpListener, ValidationHelper.HashString(asyncResult), "IOCompleted", exception.ToString());
}
result = exception;
}
asyncResult.InvokeCallback(result);
}