Beispiel #1
0
        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);
        }