Code:
/ 4.0 / 4.0 / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / fx / src / Net / System / Net / _ListenerAsyncResult.cs / 1305376 / _ListenerAsyncResult.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Net { using System.ComponentModel; using System.Threading; using System.Runtime.InteropServices; unsafe class ListenerAsyncResult : LazyAsyncResult { private static readonly IOCompletionCallback s_IOCallback = new IOCompletionCallback(WaitCallback); internal static IOCompletionCallback IOCallback { get { return s_IOCallback; } } private AsyncRequestContext m_RequestContext; internal ListenerAsyncResult(object asyncObject, object userState, AsyncCallback callback) : base(asyncObject, userState, callback) { m_RequestContext = new AsyncRequestContext(this); } private static unsafe void WaitCallback(uint errorCode, uint numBytes, NativeOverlapped* nativeOverlapped) { // take the ListenerAsyncResult object from the state Overlapped callbackOverlapped = Overlapped.Unpack(nativeOverlapped); ListenerAsyncResult asyncResult = (ListenerAsyncResult) callbackOverlapped.AsyncResult; object result = null; try { GlobalLog.Print("ListenerAsyncResult#" + ValidationHelper.HashString(asyncResult) + "::WaitCallback() errorCode:[" + errorCode.ToString() + "] numBytes:[" + numBytes.ToString() + "] nativeOverlapped:[" + ((long)nativeOverlapped).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 { 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; GlobalLog.Print("ListenerAsyncResult#" + ValidationHelper.HashString(asyncResult) + "::WaitCallback() Caught exception:" + exception.ToString()); result = exception; } asyncResult.InvokeCallback(result); } internal uint QueueBeginGetContext() { uint statusCode = UnsafeNclNativeMethods.ErrorCodes.ERROR_SUCCESS; while (true) { GlobalLog.Print("ListenerAsyncResult#" + ValidationHelper.HashString(this) + "::QueueBeginGetContext() calling UnsafeNclNativeMethods.HttpApi.HttpReceiveHttpRequest RequestId:" + m_RequestContext.RequestBlob->RequestId + " Buffer:0x" + ((IntPtr) m_RequestContext.RequestBlob).ToString("x") + " Size:" + m_RequestContext.Size.ToString()); (AsyncObject as HttpListener).EnsureBoundHandle(); uint bytesTransferred = 0; statusCode = UnsafeNclNativeMethods.HttpApi.HttpReceiveHttpRequest( (AsyncObject as HttpListener).RequestQueueHandle, m_RequestContext.RequestBlob->RequestId, (uint) UnsafeNclNativeMethods.HttpApi.HTTP_FLAGS.HTTP_RECEIVE_REQUEST_FLAG_COPY_BODY, m_RequestContext.RequestBlob, m_RequestContext.Size, &bytesTransferred, m_RequestContext.NativeOverlapped); GlobalLog.Print("ListenerAsyncResult#" + ValidationHelper.HashString(this) + "::QueueBeginGetContext() call to UnsafeNclNativeMethods.HttpApi.HttpReceiveHttpRequest returned:" + statusCode); if (statusCode == UnsafeNclNativeMethods.ErrorCodes.ERROR_INVALID_PARAMETER && m_RequestContext.RequestBlob->RequestId != 0) { // we might get this if somebody stole our RequestId, // set RequestId to 0 and start all over again with the buffer we just allocated // m_RequestContext.RequestBlob->RequestId = 0; continue; } else if (statusCode == UnsafeNclNativeMethods.ErrorCodes.ERROR_MORE_DATA) { // the buffer was not big enough to fit the headers, we need // to read the RequestId returned, allocate a new buffer of the required size m_RequestContext.Reset(m_RequestContext.RequestBlob->RequestId, bytesTransferred); continue; } break; } return statusCode; } // Will be called from the base class upon InvokeCallback() protected override void Cleanup() { if (m_RequestContext != null) { m_RequestContext.ReleasePins(); m_RequestContext.Close(); } base.Cleanup(); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Net { using System.ComponentModel; using System.Threading; using System.Runtime.InteropServices; unsafe class ListenerAsyncResult : LazyAsyncResult { private static readonly IOCompletionCallback s_IOCallback = new IOCompletionCallback(WaitCallback); internal static IOCompletionCallback IOCallback { get { return s_IOCallback; } } private AsyncRequestContext m_RequestContext; internal ListenerAsyncResult(object asyncObject, object userState, AsyncCallback callback) : base(asyncObject, userState, callback) { m_RequestContext = new AsyncRequestContext(this); } private static unsafe void WaitCallback(uint errorCode, uint numBytes, NativeOverlapped* nativeOverlapped) { // take the ListenerAsyncResult object from the state Overlapped callbackOverlapped = Overlapped.Unpack(nativeOverlapped); ListenerAsyncResult asyncResult = (ListenerAsyncResult) callbackOverlapped.AsyncResult; object result = null; try { GlobalLog.Print("ListenerAsyncResult#" + ValidationHelper.HashString(asyncResult) + "::WaitCallback() errorCode:[" + errorCode.ToString() + "] numBytes:[" + numBytes.ToString() + "] nativeOverlapped:[" + ((long)nativeOverlapped).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 { 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; GlobalLog.Print("ListenerAsyncResult#" + ValidationHelper.HashString(asyncResult) + "::WaitCallback() Caught exception:" + exception.ToString()); result = exception; } asyncResult.InvokeCallback(result); } internal uint QueueBeginGetContext() { uint statusCode = UnsafeNclNativeMethods.ErrorCodes.ERROR_SUCCESS; while (true) { GlobalLog.Print("ListenerAsyncResult#" + ValidationHelper.HashString(this) + "::QueueBeginGetContext() calling UnsafeNclNativeMethods.HttpApi.HttpReceiveHttpRequest RequestId:" + m_RequestContext.RequestBlob->RequestId + " Buffer:0x" + ((IntPtr) m_RequestContext.RequestBlob).ToString("x") + " Size:" + m_RequestContext.Size.ToString()); (AsyncObject as HttpListener).EnsureBoundHandle(); uint bytesTransferred = 0; statusCode = UnsafeNclNativeMethods.HttpApi.HttpReceiveHttpRequest( (AsyncObject as HttpListener).RequestQueueHandle, m_RequestContext.RequestBlob->RequestId, (uint) UnsafeNclNativeMethods.HttpApi.HTTP_FLAGS.HTTP_RECEIVE_REQUEST_FLAG_COPY_BODY, m_RequestContext.RequestBlob, m_RequestContext.Size, &bytesTransferred, m_RequestContext.NativeOverlapped); GlobalLog.Print("ListenerAsyncResult#" + ValidationHelper.HashString(this) + "::QueueBeginGetContext() call to UnsafeNclNativeMethods.HttpApi.HttpReceiveHttpRequest returned:" + statusCode); if (statusCode == UnsafeNclNativeMethods.ErrorCodes.ERROR_INVALID_PARAMETER && m_RequestContext.RequestBlob->RequestId != 0) { // we might get this if somebody stole our RequestId, // set RequestId to 0 and start all over again with the buffer we just allocated // m_RequestContext.RequestBlob->RequestId = 0; continue; } else if (statusCode == UnsafeNclNativeMethods.ErrorCodes.ERROR_MORE_DATA) { // the buffer was not big enough to fit the headers, we need // to read the RequestId returned, allocate a new buffer of the required size m_RequestContext.Reset(m_RequestContext.RequestBlob->RequestId, bytesTransferred); continue; } break; } return statusCode; } // Will be called from the base class upon InvokeCallback() protected override void Cleanup() { if (m_RequestContext != null) { m_RequestContext.ReleasePins(); m_RequestContext.Close(); } base.Cleanup(); } } } // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu

This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- DataSourceXmlClassAttribute.cs
- NotifyParentPropertyAttribute.cs
- InterleavedZipPartStream.cs
- PrefixHandle.cs
- ReliableChannelListener.cs
- ContainerSelectorActiveEvent.cs
- CodeNamespaceImportCollection.cs
- HierarchicalDataSourceConverter.cs
- PatternMatcher.cs
- SpeechAudioFormatInfo.cs
- WebPartChrome.cs
- Wizard.cs
- DataGridRelationshipRow.cs
- NestedContainer.cs
- SizeValueSerializer.cs
- FontDifferentiator.cs
- EmbossBitmapEffect.cs
- XmlSchemaSimpleContentExtension.cs
- TextUtf8RawTextWriter.cs
- Int64KeyFrameCollection.cs
- TemplatePagerField.cs
- _ShellExpression.cs
- Thread.cs
- SR.cs
- AutomationPatternInfo.cs
- PageBreakRecord.cs
- ExpressionCopier.cs
- StreamWithDictionary.cs
- NegotiationTokenAuthenticatorState.cs
- ConnectionConsumerAttribute.cs
- ComplexPropertyEntry.cs
- PeerResolverSettings.cs
- RequiredAttributeAttribute.cs
- Bidi.cs
- ActivityValidator.cs
- CommonObjectSecurity.cs
- UnaryNode.cs
- Evaluator.cs
- CodeCastExpression.cs
- HandleCollector.cs
- ManagementInstaller.cs
- XmlDocumentType.cs
- ListView.cs
- WebPartsPersonalizationAuthorization.cs
- XmlDataSource.cs
- HttpListenerResponse.cs
- QueryStack.cs
- IconBitmapDecoder.cs
- DBNull.cs
- XmlElementCollection.cs
- ApplicationContext.cs
- KnownTypeAttribute.cs
- HttpResponseInternalWrapper.cs
- DataGridViewRowsAddedEventArgs.cs
- DataContractSerializerFaultFormatter.cs
- ProcessHostServerConfig.cs
- BuildResultCache.cs
- _ListenerAsyncResult.cs
- CorePropertiesFilter.cs
- XmlLanguageConverter.cs
- LineProperties.cs
- CharEntityEncoderFallback.cs
- KeyNotFoundException.cs
- Label.cs
- DllNotFoundException.cs
- DataGridViewCellCancelEventArgs.cs
- ScopelessEnumAttribute.cs
- ObjectAnimationBase.cs
- DataGridViewTextBoxColumn.cs
- JsonServiceDocumentSerializer.cs
- GC.cs
- PrintDialog.cs
- TraceSwitch.cs
- WindowsImpersonationContext.cs
- HandlerBase.cs
- DesignerCapabilities.cs
- ExtentKey.cs
- Processor.cs
- TextContainerHelper.cs
- WebConfigurationHostFileChange.cs
- AttachedPropertyMethodSelector.cs
- FrameDimension.cs
- WmlLiteralTextAdapter.cs
- _NetworkingPerfCounters.cs
- InternalConfigRoot.cs
- PageRequestManager.cs
- MemberCollection.cs
- LambdaExpression.cs
- coordinator.cs
- RSAOAEPKeyExchangeDeformatter.cs
- BooleanSwitch.cs
- SoapBinding.cs
- DataGridViewRowConverter.cs
- ProgressBarHighlightConverter.cs
- SurrogateEncoder.cs
- DataRow.cs
- IndicShape.cs
- BitFlagsGenerator.cs
- MethodBuilderInstantiation.cs
- followingquery.cs