private void Reset(uint size) { if (size == _size) { return; } if (_size != 0) { _overlapped.Dispose(); } _size = size; if (size == 0) { _overlapped = null; _memoryBlob = null; _backingBuffer = null; return; } _backingBuffer = new byte[checked ((int)size)]; var boundHandle = RequestContext.Server.RequestQueue.BoundHandle; _overlapped = new SafeNativeOverlapped(boundHandle, boundHandle.AllocateNativeOverlapped(IOCallback, this, _backingBuffer)); _memoryBlob = (HttpApiTypes.HTTP_SSL_CLIENT_CERT_INFO *)Marshal.UnsafeAddrOfPinnedArrayElement(_backingBuffer, 0); }
protected virtual void Dispose(bool disposing) { if (disposing) { if (_overlapped != null) { _overlapped.Dispose(); } _cancellationRegistration.Dispose(); } }
public void Dispose() { if (_overlapped != null) { _overlapped.Dispose(); } if (_fileStream != null) { _fileStream.Dispose(); } _cancellationRegistration.Dispose(); }
// Method to clean up any existing Overlapped object and related state variables. private void FreeOverlapped(bool checkForShutdown) { if (!checkForShutdown || !NclUtilities.HasShutdownStarted) { // Free the overlapped object if (m_PtrNativeOverlapped != null && !m_PtrNativeOverlapped.IsInvalid) { m_PtrNativeOverlapped.Dispose(); } if (m_DataChunksGCHandle.IsAllocated) { m_DataChunksGCHandle.Free(); } } }
private unsafe CancellationToken CreateDisconnectToken(ulong connectionId) { LogHelper.LogDebug(_logger, "CreateDisconnectToken", "Registering connection for disconnect for connection ID: " + connectionId); // Create a nativeOverlapped callback so we can register for disconnect callback var cts = new CancellationTokenSource(); var returnToken = cts.Token; SafeNativeOverlapped nativeOverlapped = null; var boundHandle = _requestQueue.BoundHandle; nativeOverlapped = new SafeNativeOverlapped(boundHandle, boundHandle.AllocateNativeOverlapped( (errorCode, numBytes, overlappedPtr) => { LogHelper.LogDebug(_logger, "CreateDisconnectToken", "http.sys disconnect callback fired for connection ID: " + connectionId); // Free the overlapped nativeOverlapped.Dispose(); // Pull the token out of the list and Cancel it. ConnectionCancellation token; _connectionCancellationTokens.TryRemove(connectionId, out token); try { cts.Cancel(); } catch (AggregateException exception) { LogHelper.LogException(_logger, "CreateDisconnectToken Callback", exception); } }, null, null)); uint statusCode; try { statusCode = HttpApi.HttpWaitForDisconnectEx(requestQueueHandle: _requestQueue.Handle, connectionId: connectionId, reserved: 0, overlapped: nativeOverlapped); } catch (Win32Exception exception) { statusCode = (uint)exception.NativeErrorCode; LogHelper.LogException(_logger, "CreateDisconnectToken", exception); } if (statusCode != UnsafeNclNativeMethods.ErrorCodes.ERROR_IO_PENDING && statusCode != UnsafeNclNativeMethods.ErrorCodes.ERROR_SUCCESS) { // We got an unknown result, assume the connection has been closed. nativeOverlapped.Dispose(); ConnectionCancellation ignored; _connectionCancellationTokens.TryRemove(connectionId, out ignored); LogHelper.LogDebug(_logger, "HttpWaitForDisconnectEx", new Win32Exception((int)statusCode)); cts.Cancel(); } if (statusCode == UnsafeNclNativeMethods.ErrorCodes.ERROR_SUCCESS && HttpSysListener.SkipIOCPCallbackOnSuccess) { // IO operation completed synchronously - callback won't be called to signal completion nativeOverlapped.Dispose(); ConnectionCancellation ignored; _connectionCancellationTokens.TryRemove(connectionId, out ignored); cts.Cancel(); } return(returnToken); }