Code:
/ Dotnetfx_Win7_3.5.1 / Dotnetfx_Win7_3.5.1 / 3.5.1 / DEVDIV / depot / DevDiv / releases / whidbey / NetFXspW7 / ndp / fx / src / Net / System / Net / Sockets / _TransmitFileOverlappedAsyncResult.cs / 1 / _TransmitFileOverlappedAsyncResult.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Net.Sockets { using System; using System.Net; using System.IO; using System.Runtime.InteropServices; using System.Threading; using Microsoft.Win32; // // OverlappedAsyncResult - used to take care of storage for async Socket operation // from the BeginSend, BeginSendTo, BeginReceive, BeginReceiveFrom calls. // internal class TransmitFileOverlappedAsyncResult : BaseOverlappedAsyncResult { // // internal class members // private FileStream m_fileStream; private TransmitFileOptions m_flags; private TransmitFileBuffers m_buffers; // Constructor. We take in the socket that's creating us, the caller's // state object, and the buffer on which the I/O will be performed. // We save the socket and state, pin the callers's buffer, and allocate // an event for the WaitHandle. // internal TransmitFileOverlappedAsyncResult(Socket socket, Object asyncState, AsyncCallback asyncCallback) : base(socket, asyncState, asyncCallback) { } internal TransmitFileOverlappedAsyncResult(Socket socket):base(socket){ } // // SetUnmanagedStructures - // Fills in Overlapped Structures used in an Async Overlapped Winsock call // these calls are outside the runtime and are unmanaged code, so we need // to prepare specific structures and ints that lie in unmanaged memory // since the Overlapped calls can be Async // internal void SetUnmanagedStructures(byte[] preBuffer, byte[] postBuffer, FileStream fileStream, TransmitFileOptions flags, bool [....]) { // // fill in flags if we use it. // m_fileStream = fileStream; m_flags = flags; // // Fill in Buffer Array structure that will be used for our send/recv Buffer // m_buffers = null; int buffsNumber = 0; if (preBuffer != null && preBuffer.Length>0) ++buffsNumber; if (postBuffer != null && postBuffer.Length>0) ++buffsNumber; object[] objectsToPin = null; if (buffsNumber != 0) { ++buffsNumber; objectsToPin = new object[buffsNumber]; m_buffers = new TransmitFileBuffers(); objectsToPin[--buffsNumber] = m_buffers; if (preBuffer != null && preBuffer.Length>0) { m_buffers.preBufferLength = preBuffer.Length; objectsToPin[--buffsNumber] = preBuffer; } if (postBuffer != null && postBuffer.Length>0) { m_buffers.postBufferLength = postBuffer.Length; objectsToPin[--buffsNumber] = postBuffer; } if ([....]) { base.PinUnmanagedObjects(objectsToPin); } else { base.SetUnmanagedStructures(objectsToPin); } if (preBuffer != null && preBuffer.Length > 0) { m_buffers.preBuffer = Marshal.UnsafeAddrOfPinnedArrayElement(preBuffer, 0); } if (postBuffer != null && postBuffer.Length > 0) { m_buffers.postBuffer = Marshal.UnsafeAddrOfPinnedArrayElement(postBuffer, 0); } } else if (![....]) { base.SetUnmanagedStructures(null); } } // SetUnmanagedStructures() internal void SetUnmanagedStructures(byte[] preBuffer, byte[] postBuffer, FileStream fileStream, TransmitFileOptions flags, ref OverlappedCache overlappedCache) { SetupCache(ref overlappedCache); SetUnmanagedStructures(preBuffer, postBuffer, fileStream, flags, false); } // Utility cleanup routine. Frees pinned and unmanged memory. // protected override void ForceReleaseUnmanagedStructures() { if (m_fileStream != null ) { m_fileStream.Close(); m_fileStream = null; } // // clenaup base class // base.ForceReleaseUnmanagedStructures(); } // CleanupUnmanagedStructures() internal void SyncReleaseUnmanagedStructures() { ForceReleaseUnmanagedStructures(); } internal TransmitFileBuffers TransmitFileBuffers{ get{ return m_buffers; } } internal TransmitFileOptions Flags{ get{ return m_flags; } } }; // class OverlappedAsyncResult } // namespace System.Net.Sockets // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Net.Sockets { using System; using System.Net; using System.IO; using System.Runtime.InteropServices; using System.Threading; using Microsoft.Win32; // // OverlappedAsyncResult - used to take care of storage for async Socket operation // from the BeginSend, BeginSendTo, BeginReceive, BeginReceiveFrom calls. // internal class TransmitFileOverlappedAsyncResult : BaseOverlappedAsyncResult { // // internal class members // private FileStream m_fileStream; private TransmitFileOptions m_flags; private TransmitFileBuffers m_buffers; // Constructor. We take in the socket that's creating us, the caller's // state object, and the buffer on which the I/O will be performed. // We save the socket and state, pin the callers's buffer, and allocate // an event for the WaitHandle. // internal TransmitFileOverlappedAsyncResult(Socket socket, Object asyncState, AsyncCallback asyncCallback) : base(socket, asyncState, asyncCallback) { } internal TransmitFileOverlappedAsyncResult(Socket socket):base(socket){ } // // SetUnmanagedStructures - // Fills in Overlapped Structures used in an Async Overlapped Winsock call // these calls are outside the runtime and are unmanaged code, so we need // to prepare specific structures and ints that lie in unmanaged memory // since the Overlapped calls can be Async // internal void SetUnmanagedStructures(byte[] preBuffer, byte[] postBuffer, FileStream fileStream, TransmitFileOptions flags, bool [....]) { // // fill in flags if we use it. // m_fileStream = fileStream; m_flags = flags; // // Fill in Buffer Array structure that will be used for our send/recv Buffer // m_buffers = null; int buffsNumber = 0; if (preBuffer != null && preBuffer.Length>0) ++buffsNumber; if (postBuffer != null && postBuffer.Length>0) ++buffsNumber; object[] objectsToPin = null; if (buffsNumber != 0) { ++buffsNumber; objectsToPin = new object[buffsNumber]; m_buffers = new TransmitFileBuffers(); objectsToPin[--buffsNumber] = m_buffers; if (preBuffer != null && preBuffer.Length>0) { m_buffers.preBufferLength = preBuffer.Length; objectsToPin[--buffsNumber] = preBuffer; } if (postBuffer != null && postBuffer.Length>0) { m_buffers.postBufferLength = postBuffer.Length; objectsToPin[--buffsNumber] = postBuffer; } if ([....]) { base.PinUnmanagedObjects(objectsToPin); } else { base.SetUnmanagedStructures(objectsToPin); } if (preBuffer != null && preBuffer.Length > 0) { m_buffers.preBuffer = Marshal.UnsafeAddrOfPinnedArrayElement(preBuffer, 0); } if (postBuffer != null && postBuffer.Length > 0) { m_buffers.postBuffer = Marshal.UnsafeAddrOfPinnedArrayElement(postBuffer, 0); } } else if (![....]) { base.SetUnmanagedStructures(null); } } // SetUnmanagedStructures() internal void SetUnmanagedStructures(byte[] preBuffer, byte[] postBuffer, FileStream fileStream, TransmitFileOptions flags, ref OverlappedCache overlappedCache) { SetupCache(ref overlappedCache); SetUnmanagedStructures(preBuffer, postBuffer, fileStream, flags, false); } // Utility cleanup routine. Frees pinned and unmanged memory. // protected override void ForceReleaseUnmanagedStructures() { if (m_fileStream != null ) { m_fileStream.Close(); m_fileStream = null; } // // clenaup base class // base.ForceReleaseUnmanagedStructures(); } // CleanupUnmanagedStructures() internal void SyncReleaseUnmanagedStructures() { ForceReleaseUnmanagedStructures(); } internal TransmitFileBuffers TransmitFileBuffers{ get{ return m_buffers; } } internal TransmitFileOptions Flags{ get{ return m_flags; } } }; // class OverlappedAsyncResult } // namespace System.Net.Sockets // File provided for Reference Use Only by Microsoft Corporation (c) 2007.
Link Menu
![Network programming in C#, Network Programming in VB.NET, Network Programming in .NET](/images/book.jpg)
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- DetailsViewUpdatedEventArgs.cs
- PropertyRecord.cs
- PersonalizationStateInfo.cs
- EmptyStringExpandableObjectConverter.cs
- Merger.cs
- TimeSpanOrInfiniteValidator.cs
- ThreadAbortException.cs
- TextEditorSpelling.cs
- OdbcCommandBuilder.cs
- FixedNode.cs
- MetadataFile.cs
- ContextMenu.cs
- HMACSHA512.cs
- OperationAbortedException.cs
- GridPattern.cs
- XmlNamedNodeMap.cs
- DecoderBestFitFallback.cs
- OdbcDataReader.cs
- RoleGroupCollection.cs
- Merger.cs
- Soap.cs
- BinaryCommonClasses.cs
- URLIdentityPermission.cs
- IndexedDataBuffer.cs
- UniqueConstraint.cs
- TimelineCollection.cs
- CodeNamespaceImport.cs
- Repeater.cs
- PointHitTestResult.cs
- DeviceSpecificChoice.cs
- HashAlgorithm.cs
- TypeExtensionSerializer.cs
- ConversionValidationRule.cs
- WebPartsPersonalizationAuthorization.cs
- Baml2006SchemaContext.cs
- InheritanceContextHelper.cs
- DomNameTable.cs
- RoleServiceManager.cs
- FieldNameLookup.cs
- ConversionContext.cs
- KnownTypeDataContractResolver.cs
- XmlNamespaceDeclarationsAttribute.cs
- StringFreezingAttribute.cs
- HtmlTextArea.cs
- ListControl.cs
- ContractBase.cs
- CodeAccessSecurityEngine.cs
- InputMethodStateChangeEventArgs.cs
- DataTrigger.cs
- ToolStripDropDown.cs
- QilParameter.cs
- WorkBatch.cs
- CriticalExceptions.cs
- AnonymousIdentificationSection.cs
- peersecurityelement.cs
- GCHandleCookieTable.cs
- WizardPanel.cs
- LiteralControl.cs
- HtmlSelect.cs
- ThicknessAnimation.cs
- TreeView.cs
- HttpFileCollectionBase.cs
- XPathNodePointer.cs
- MemoryFailPoint.cs
- RtfNavigator.cs
- ParameterRetriever.cs
- FixedTextPointer.cs
- ButtonStandardAdapter.cs
- ParsedAttributeCollection.cs
- TemplatePartAttribute.cs
- HtmlToClrEventProxy.cs
- FixedSOMLineCollection.cs
- ChannelManager.cs
- EventHandlerList.cs
- LogRecordSequence.cs
- StrokeSerializer.cs
- TableCell.cs
- AppSettingsExpressionBuilder.cs
- HttpHostedTransportConfiguration.cs
- RegisteredArrayDeclaration.cs
- DeviceFilterEditorDialog.cs
- RoutedCommand.cs
- CodeNamespaceImportCollection.cs
- TextElementEnumerator.cs
- SpellerStatusTable.cs
- HtmlInputHidden.cs
- DBCommand.cs
- UndirectedGraph.cs
- StringDictionaryCodeDomSerializer.cs
- Activator.cs
- CustomAssemblyResolver.cs
- URL.cs
- documentation.cs
- DefaultValueAttribute.cs
- CuspData.cs
- Duration.cs
- DeviceContexts.cs
- BindUriHelper.cs
- LinqDataView.cs
- EventProxy.cs