Code:
/ DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / Net / System / Net / NetworkInformation / SystemIPAddressInformation.cs / 1 / SystemIPAddressInformation.cs
////// namespace System.Net.NetworkInformation { using System.Net; using System.Net.Sockets; using System; using System.Runtime.InteropServices; using System.Collections; using System.ComponentModel; using System.Security.Permissions; using Microsoft.Win32; //this is the main addressinformation class that contains the ipaddress //and other properties internal class SystemIPAddressInformation:IPAddressInformation{ IPAddress address; internal bool transient = false; internal bool dnsEligible = true; /* // Consider removing. internal SystemIPAddressInformation(){} */ internal SystemIPAddressInformation(IPAddress address) { this.address = address; if (address.AddressFamily == AddressFamily.InterNetwork) { //DngEligible is true except for 169.254.x.x addresses (the APIPA addresses ) dnsEligible = !((address.m_Address & 0x0000FEA9)>0); } } internal SystemIPAddressInformation(IpAdapterUnicastAddress adapterAddress,IPAddress address) { this.address = address; transient = (adapterAddress.flags & AdapterAddressFlags.Transient)>0; dnsEligible = (adapterAddress.flags & AdapterAddressFlags.DnsEligible)>0; } internal SystemIPAddressInformation(IpAdapterAddress adapterAddress,IPAddress address) { this.address = address; transient = (adapterAddress.flags & AdapterAddressFlags.Transient)>0; dnsEligible = (adapterAddress.flags & AdapterAddressFlags.DnsEligible)>0; } public override IPAddress Address{get {return address;}} /// /// Provides support for ip configuation information and statistics. /// The address is a cluster address and shouldn't be used by most applications. public override bool IsTransient{ get { return (transient); } } ///This address can be used for DNS. public override bool IsDnsEligible{ get { return (dnsEligible); } } //helper method that marshals the addressinformation into the classes internal static IPAddressCollection ToAddressCollection(IntPtr ptr,IPVersion versionSupported) { //we don't know the number of addresses up front, so we create an arraylist //to temporarily store them. IPAddressCollection addressList = new IPAddressCollection(); //if there is no address, just return; if (ptr == IntPtr.Zero) return addressList; //get the first address IpAdapterAddress addr = (IpAdapterAddress)Marshal.PtrToStructure(ptr,typeof(IpAdapterAddress)); //determine the address family used to create the IPAddress AddressFamily family = (addr.address.addressLength > 16)?AddressFamily.InterNetworkV6:AddressFamily.InterNetwork; SocketAddress sockAddress = new SocketAddress(family,(int)addr.address.addressLength); Marshal.Copy(addr.address.address,sockAddress.m_Buffer,0,addr.address.addressLength); //unfortunately, the only way to currently create an ipaddress is through IPEndPoint IPEndPoint ep; if (family == AddressFamily.InterNetwork ) ep = (IPEndPoint)IPEndPoint.Any.Create(sockAddress); else ep = (IPEndPoint)IPEndPoint.IPv6Any.Create(sockAddress); //add the ipaddress to the arraylist addressList.InternalAdd(ep.Address); //repeat for all of the addresses while ( addr.next != IntPtr.Zero ) { addr = (IpAdapterAddress)Marshal.PtrToStructure(addr.next,typeof(IpAdapterAddress)); //determine the address family used to create the IPAddress family = (addr.address.addressLength > 16)?AddressFamily.InterNetworkV6:AddressFamily.InterNetwork; //only add addresses that are the same type as what is supported by the interface //this fixes a bug in iphelper regarding dns addresses if (((family == AddressFamily.InterNetwork) && ((versionSupported & IPVersion.IPv4) > 0)) || ((family == AddressFamily.InterNetworkV6) && ((versionSupported & IPVersion.IPv6) > 0))) { sockAddress = new SocketAddress(family,(int)addr.address.addressLength); Marshal.Copy(addr.address.address,sockAddress.m_Buffer,0,addr.address.addressLength); //use the endpoint to create the ipaddress if (family == AddressFamily.InterNetwork ) ep = (IPEndPoint)IPEndPoint.Any.Create(sockAddress); else ep = (IPEndPoint)IPEndPoint.IPv6Any.Create(sockAddress); addressList.InternalAdd(ep.Address); } } return addressList; } //helper method that marshals the addressinformation into the classes internal static IPAddressInformationCollection ToAddressInformationCollection(IntPtr ptr,IPVersion versionSupported) { //we don't know the number of addresses up front, so we create an arraylist //to temporarily store them. IPAddressInformationCollection addressList = new IPAddressInformationCollection(); //if there is no address, just return; if (ptr == IntPtr.Zero) return addressList; //get the first address IpAdapterAddress addr = (IpAdapterAddress)Marshal.PtrToStructure(ptr,typeof(IpAdapterAddress)); //determine the address family used to create the IPAddress AddressFamily family = (addr.address.addressLength > 16)?AddressFamily.InterNetworkV6:AddressFamily.InterNetwork; SocketAddress sockAddress = new SocketAddress(family,(int)addr.address.addressLength); Marshal.Copy(addr.address.address,sockAddress.m_Buffer,0,addr.address.addressLength); //unfortunately, the only way to currently create an ipaddress is through IPEndPoint IPEndPoint ep; if (family == AddressFamily.InterNetwork ) ep = (IPEndPoint)IPEndPoint.Any.Create(sockAddress); else ep = (IPEndPoint)IPEndPoint.IPv6Any.Create(sockAddress); //add the ipaddress to the arraylist addressList.InternalAdd(new SystemIPAddressInformation(addr,ep.Address)); //repeat for all of the addresses while ( addr.next != IntPtr.Zero ) { addr = (IpAdapterAddress)Marshal.PtrToStructure(addr.next,typeof(IpAdapterAddress)); //determine the address family used to create the IPAddress family = (addr.address.addressLength > 16)?AddressFamily.InterNetworkV6:AddressFamily.InterNetwork; //only add addresses that are the same type as what is supported by the interface //this fixes a bug in iphelper regarding dns addresses if (((family == AddressFamily.InterNetwork) && ((versionSupported & IPVersion.IPv4) > 0)) || ((family == AddressFamily.InterNetworkV6) && ((versionSupported & IPVersion.IPv6) > 0))) { sockAddress = new SocketAddress(family,(int)addr.address.addressLength); Marshal.Copy(addr.address.address,sockAddress.m_Buffer,0,addr.address.addressLength); //use the endpoint to create the ipaddress if (family == AddressFamily.InterNetwork ) ep = (IPEndPoint)IPEndPoint.Any.Create(sockAddress); else ep = (IPEndPoint)IPEndPoint.IPv6Any.Create(sockAddress); addressList.InternalAdd(new SystemIPAddressInformation(addr,ep.Address)); } } return addressList; } } }
Link Menu
This book is available now!
Buy at Amazon US or
Buy at Amazon UK
- RequestChannelBinder.cs
- LazyTextWriterCreator.cs
- StorageBasedPackageProperties.cs
- EntityDataSourceMemberPath.cs
- NumberSubstitution.cs
- MissingManifestResourceException.cs
- EngineSiteSapi.cs
- _WinHttpWebProxyDataBuilder.cs
- Double.cs
- IDataContractSurrogate.cs
- Shape.cs
- Grid.cs
- DrawTreeNodeEventArgs.cs
- DataGridViewLayoutData.cs
- MissingMemberException.cs
- DoubleLinkListEnumerator.cs
- ProxyGenerator.cs
- SctClaimDictionary.cs
- DataColumnChangeEvent.cs
- ServiceReference.cs
- HtmlInputHidden.cs
- Collection.cs
- DownloadProgressEventArgs.cs
- DataGridViewCellCollection.cs
- EntityContainerAssociationSet.cs
- Configuration.cs
- MatrixStack.cs
- TextParentUndoUnit.cs
- WhereQueryOperator.cs
- ProcessingInstructionAction.cs
- CqlIdentifiers.cs
- TextStore.cs
- IFlowDocumentViewer.cs
- NamespaceImport.cs
- Evidence.cs
- PropertyChangedEventArgs.cs
- Point3D.cs
- Expr.cs
- SamlSecurityToken.cs
- ISO2022Encoding.cs
- DurableRuntimeValidator.cs
- SmtpNegotiateAuthenticationModule.cs
- ApplicationHost.cs
- DependencyProperty.cs
- CommandConverter.cs
- SqlProfileProvider.cs
- BaseCollection.cs
- TdsRecordBufferSetter.cs
- RegexGroup.cs
- BitmapFrameDecode.cs
- CompatibleComparer.cs
- TableDetailsRow.cs
- WindowsPen.cs
- DBDataPermission.cs
- SerializationIncompleteException.cs
- TypeUtils.cs
- GridViewPageEventArgs.cs
- ListenerAdapter.cs
- Debug.cs
- odbcmetadatafactory.cs
- TreeNode.cs
- OrderPreservingMergeHelper.cs
- TreeNodeEventArgs.cs
- TdsParser.cs
- RegexNode.cs
- COM2FontConverter.cs
- Image.cs
- PreservationFileWriter.cs
- SqlStatistics.cs
- Viewport2DVisual3D.cs
- EnlistmentTraceIdentifier.cs
- RC2CryptoServiceProvider.cs
- QueryMath.cs
- wmiutil.cs
- Serializer.cs
- ExpressionLexer.cs
- MdImport.cs
- RelatedPropertyManager.cs
- TextElement.cs
- GraphicsPath.cs
- DataGridColumnHeader.cs
- SiteMapProvider.cs
- TreeBuilder.cs
- ToolStripSystemRenderer.cs
- FrugalList.cs
- TableSectionStyle.cs
- UserControlDocumentDesigner.cs
- MetadataException.cs
- CapiHashAlgorithm.cs
- QueryAccessibilityHelpEvent.cs
- AuthenticationModulesSection.cs
- EnumType.cs
- NamedElement.cs
- DataGridViewCellEventArgs.cs
- PropertyCollection.cs
- TokenBasedSet.cs
- EventLogPermissionHolder.cs
- Decorator.cs
- ADMembershipProvider.cs
- OdbcConnectionFactory.cs