Code:
/ Dotnetfx_Vista_SP2 / Dotnetfx_Vista_SP2 / 8.0.50727.4016 / DEVDIV / depot / DevDiv / releases / whidbey / NetFxQFE / ndp / fx / src / Net / System / Net / SocketAddress.cs / 1 / SocketAddress.cs
//------------------------------------------------------------------------------ //// Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Net { using System; using System.Runtime.InteropServices; using System.Net.Sockets; using System.Text; using System.Globalization; // a little perf app measured these times when comparing the internal // buffer implemented as a managed byte[] or unmanaged memory IntPtr // that's why we use byte[] // byte[] total ms:19656 // IntPtr total ms:25671 ////// public class SocketAddress { internal const int IPv6AddressSize = 28; internal const int IPv4AddressSize = 16; internal int m_Size; internal byte[] m_Buffer; private const int WriteableOffset = 2; private const int MaxSize = 32; // IrDA requires 32 bytes private bool m_changed = true; private int m_hash; // // Address Family // ////// This class is used when subclassing EndPoint, and provides indication /// on how to format the memeory buffers that winsock uses for network addresses. /// ////// public AddressFamily Family { get { int family; #if BIGENDIAN family = ((int)m_Buffer[0]<<8) | m_Buffer[1]; #else family = m_Buffer[0] | ((int)m_Buffer[1]<<8); #endif return (AddressFamily)family; } } // // Size of this SocketAddress // ///[To be supplied.] ////// public int Size { get { return m_Size; } } // // access to unmanaged serialized data. this doesn't // allow access to the first 2 bytes of unmanaged memory // that are supposed to contain the address family which // is readonly. // //[To be supplied.] ///you can still use negative offsets as a back door in case // winsock changes the way it uses SOCKADDR. maybe we want to prohibit it? // maybe we should make the class sealed to avoid potentially dangerous calls // into winsock with unproperly formatted data? // ////// public byte this[int offset] { get { // // access // if (offset<0 || offset>=Size) { throw new IndexOutOfRangeException(); } return m_Buffer[offset]; } set { if (offset<0 || offset>=Size) { throw new IndexOutOfRangeException(); } if (m_Buffer[offset] != value) { m_changed = true; } m_Buffer[offset] = value; } } ///[To be supplied.] ////// public SocketAddress(AddressFamily family) : this(family, MaxSize) { } ///[To be supplied.] ////// public SocketAddress(AddressFamily family, int size) { if (size[To be supplied.] ///>8)); m_Buffer[1] = unchecked((byte)((int)family )); #else m_Buffer[0] = unchecked((byte)((int)family )); m_Buffer[1] = unchecked((byte)((int)family>>8)); #endif } // // For ReceiveFrom we need to pin address size, using reserved m_Buffer space // internal void CopyAddressSizeIntoBuffer() { m_Buffer[m_Buffer.Length-IntPtr.Size] = unchecked((byte)(m_Size)); m_Buffer[m_Buffer.Length-IntPtr.Size+1] = unchecked((byte)(m_Size >> 8)); m_Buffer[m_Buffer.Length-IntPtr.Size+2] = unchecked((byte)(m_Size >> 16)); m_Buffer[m_Buffer.Length-IntPtr.Size+3] = unchecked((byte)(m_Size >> 24)); } // // Can be called after the above method did work // internal int GetAddressSizeOffset() { return m_Buffer.Length-IntPtr.Size; } // // // For ReceiveFrom we need to update the address size upon IO return // internal unsafe void SetSize(IntPtr ptr) { // Apparently it must be less or equal the original value since ReceiveFrom cannot reallocate the address buffer m_Size = *(int*)ptr; } public override bool Equals(object comparand) { SocketAddress castedComparand = comparand as SocketAddress; if (castedComparand == null || this.Size != castedComparand.Size) { return false; } for(int i=0; i WriteableOffset) { bytes.Append(","); } bytes.Append(this[i].ToString(NumberFormatInfo.InvariantInfo)); } return Family.ToString() + ":" + Size.ToString(NumberFormatInfo.InvariantInfo) + ":{" + bytes.ToString() + "}"; } } // class SocketAddress } // namespace System.Net // File provided for Reference Use Only by Microsoft Corporation (c) 2007. //------------------------------------------------------------------------------ // // Copyright (c) Microsoft Corporation. All rights reserved. // //----------------------------------------------------------------------------- namespace System.Net { using System; using System.Runtime.InteropServices; using System.Net.Sockets; using System.Text; using System.Globalization; // a little perf app measured these times when comparing the internal // buffer implemented as a managed byte[] or unmanaged memory IntPtr // that's why we use byte[] // byte[] total ms:19656 // IntPtr total ms:25671 ////// public class SocketAddress { internal const int IPv6AddressSize = 28; internal const int IPv4AddressSize = 16; internal int m_Size; internal byte[] m_Buffer; private const int WriteableOffset = 2; private const int MaxSize = 32; // IrDA requires 32 bytes private bool m_changed = true; private int m_hash; // // Address Family // ////// This class is used when subclassing EndPoint, and provides indication /// on how to format the memeory buffers that winsock uses for network addresses. /// ////// public AddressFamily Family { get { int family; #if BIGENDIAN family = ((int)m_Buffer[0]<<8) | m_Buffer[1]; #else family = m_Buffer[0] | ((int)m_Buffer[1]<<8); #endif return (AddressFamily)family; } } // // Size of this SocketAddress // ///[To be supplied.] ////// public int Size { get { return m_Size; } } // // access to unmanaged serialized data. this doesn't // allow access to the first 2 bytes of unmanaged memory // that are supposed to contain the address family which // is readonly. // //[To be supplied.] ///you can still use negative offsets as a back door in case // winsock changes the way it uses SOCKADDR. maybe we want to prohibit it? // maybe we should make the class sealed to avoid potentially dangerous calls // into winsock with unproperly formatted data? // ////// public byte this[int offset] { get { // // access // if (offset<0 || offset>=Size) { throw new IndexOutOfRangeException(); } return m_Buffer[offset]; } set { if (offset<0 || offset>=Size) { throw new IndexOutOfRangeException(); } if (m_Buffer[offset] != value) { m_changed = true; } m_Buffer[offset] = value; } } ///[To be supplied.] ////// public SocketAddress(AddressFamily family) : this(family, MaxSize) { } ///[To be supplied.] ////// public SocketAddress(AddressFamily family, int size) { if (size[To be supplied.] ///>8)); m_Buffer[1] = unchecked((byte)((int)family )); #else m_Buffer[0] = unchecked((byte)((int)family )); m_Buffer[1] = unchecked((byte)((int)family>>8)); #endif } // // For ReceiveFrom we need to pin address size, using reserved m_Buffer space // internal void CopyAddressSizeIntoBuffer() { m_Buffer[m_Buffer.Length-IntPtr.Size] = unchecked((byte)(m_Size)); m_Buffer[m_Buffer.Length-IntPtr.Size+1] = unchecked((byte)(m_Size >> 8)); m_Buffer[m_Buffer.Length-IntPtr.Size+2] = unchecked((byte)(m_Size >> 16)); m_Buffer[m_Buffer.Length-IntPtr.Size+3] = unchecked((byte)(m_Size >> 24)); } // // Can be called after the above method did work // internal int GetAddressSizeOffset() { return m_Buffer.Length-IntPtr.Size; } // // // For ReceiveFrom we need to update the address size upon IO return // internal unsafe void SetSize(IntPtr ptr) { // Apparently it must be less or equal the original value since ReceiveFrom cannot reallocate the address buffer m_Size = *(int*)ptr; } public override bool Equals(object comparand) { SocketAddress castedComparand = comparand as SocketAddress; if (castedComparand == null || this.Size != castedComparand.Size) { return false; } for(int i=0; i WriteableOffset) { bytes.Append(","); } bytes.Append(this[i].ToString(NumberFormatInfo.InvariantInfo)); } return Family.ToString() + ":" + Size.ToString(NumberFormatInfo.InvariantInfo) + ":{" + bytes.ToString() + "}"; } } // class SocketAddress } // namespace System.Net // 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
- XmlEventCache.cs
- StorageAssociationSetMapping.cs
- DesignerAttribute.cs
- ToolBarPanel.cs
- querybuilder.cs
- UnitySerializationHolder.cs
- ClientTargetSection.cs
- Vector3dCollection.cs
- MetricEntry.cs
- StrokeIntersection.cs
- PieceNameHelper.cs
- BitmapEffectGroup.cs
- InkCanvasFeedbackAdorner.cs
- TypeBuilder.cs
- XmlAttributeAttribute.cs
- GlyphManager.cs
- CryptoApi.cs
- DrawListViewSubItemEventArgs.cs
- CalculatedColumn.cs
- ButtonField.cs
- DataGridColumn.cs
- OdbcConnectionString.cs
- AdRotatorDesigner.cs
- ByteStreamGeometryContext.cs
- ReadOnlyAttribute.cs
- MobileControl.cs
- TheQuery.cs
- TextFormatter.cs
- Point3DKeyFrameCollection.cs
- SchemaReference.cs
- _SslSessionsCache.cs
- _HTTPDateParse.cs
- IndexedGlyphRun.cs
- DocumentXPathNavigator.cs
- DataObjectAttribute.cs
- ArithmeticLiteral.cs
- RuntimeWrappedException.cs
- ComponentManagerBroker.cs
- ParamArrayAttribute.cs
- ThemeInfoAttribute.cs
- TimeoutHelper.cs
- Point3DAnimation.cs
- XhtmlBasicSelectionListAdapter.cs
- Baml2006KnownTypes.cs
- FileSystemInfo.cs
- InfoCardRSACryptoProvider.cs
- InitiatorSessionSymmetricMessageSecurityProtocol.cs
- SqlFunctionAttribute.cs
- EnumDataContract.cs
- Models.cs
- WindowsFormsLinkLabel.cs
- InvocationExpression.cs
- pingexception.cs
- WebMessageBodyStyleHelper.cs
- Empty.cs
- FastEncoderWindow.cs
- XmlnsPrefixAttribute.cs
- PanelContainerDesigner.cs
- SymbolMethod.cs
- DataSourceControlBuilder.cs
- ResourcesChangeInfo.cs
- GZipStream.cs
- XmlReflectionImporter.cs
- Sequence.cs
- AnimationClock.cs
- M3DUtil.cs
- StrongNameKeyPair.cs
- RelationshipNavigation.cs
- HttpAsyncResult.cs
- WinFormsSpinner.cs
- QueryStringConverter.cs
- AnnotationAuthorChangedEventArgs.cs
- BaseParaClient.cs
- RuleSettings.cs
- DBCommandBuilder.cs
- Substitution.cs
- XmlSchemaSubstitutionGroup.cs
- ReadOnlyKeyedCollection.cs
- DateTimePickerDesigner.cs
- UnsafeNativeMethods.cs
- CapiHashAlgorithm.cs
- Vector3D.cs
- XPathSelfQuery.cs
- DateTimePicker.cs
- FlowDocumentScrollViewerAutomationPeer.cs
- RetriableClipboard.cs
- PropertyBuilder.cs
- BitmapCodecInfoInternal.cs
- DataGridViewComboBoxColumn.cs
- KnownIds.cs
- OdbcCommand.cs
- DataGridViewCellStyleChangedEventArgs.cs
- FastPropertyAccessor.cs
- DynamicILGenerator.cs
- DetailsViewModeEventArgs.cs
- sortedlist.cs
- UTF8Encoding.cs
- Propagator.JoinPropagator.JoinPredicateVisitor.cs
- ActivityAction.cs
- WindowsGraphicsCacheManager.cs