public static InterfaceDescriptionBlock Parse(BaseBlock baseBlock, Action <Exception> ActionOnException) { CustomContract.Requires <ArgumentNullException>(baseBlock != null, "BaseBlock cannot be null"); CustomContract.Requires <ArgumentNullException>(baseBlock.Body != null, "BaseBlock.Body cannot be null"); CustomContract.Requires <ArgumentException>(baseBlock.BlockType == BaseBlock.Types.InterfaceDescription, "Invalid packet type"); long positionInStream = baseBlock.PositionInStream; using (Stream stream = new MemoryStream(baseBlock.Body)) { using (BinaryReader binaryReader = new BinaryReader(stream)) { UInt16 linktype = binaryReader.ReadUInt16().ReverseByteOrder(baseBlock.ReverseByteOrder); if (!Enum.IsDefined(typeof(LinkTypes), linktype)) { throw new ArgumentException(string.Format("[InterfaceDescriptionBlock.ctor] invalid LinkTypes: {0}, block begin on position {1} ", linktype, positionInStream)); } LinkTypes linkType = (LinkTypes)linktype; binaryReader.ReadUInt16(); // Reserved field. int snapLength = binaryReader.ReadInt32().ReverseByteOrder(baseBlock.ReverseByteOrder); InterfaceDescriptionOption Options = InterfaceDescriptionOption.Parse(binaryReader, baseBlock.ReverseByteOrder, ActionOnException); InterfaceDescriptionBlock interfaceBlock = new InterfaceDescriptionBlock(linkType, snapLength, Options, positionInStream); return(interfaceBlock); } } }
public static AbstractBlock ReadNextBlock(BinaryReader binaryReader, bool bytesReorder, Action <Exception> ActionOnException) { CustomContract.Requires <ArgumentNullException>(binaryReader != null, "binaryReader cannot be null"); try { BaseBlock baseblock = new BaseBlock(binaryReader, bytesReorder); AbstractBlock block = null;; switch (baseblock.BlockType) { case BaseBlock.Types.SectionHeader: block = SectionHeaderBlock.Parse(baseblock, ActionOnException); break; case BaseBlock.Types.InterfaceDescription: block = InterfaceDescriptionBlock.Parse(baseblock, ActionOnException); break; case BaseBlock.Types.Packet: block = PacketBlock.Parse(baseblock, ActionOnException); break; case BaseBlock.Types.SimplePacket: block = SimplePacketBlock.Parse(baseblock, ActionOnException); break; case BaseBlock.Types.NameResolution: block = NameResolutionBlock.Parse(baseblock, ActionOnException); break; case BaseBlock.Types.InterfaceStatistics: block = InterfaceStatisticsBlock.Parse(baseblock, ActionOnException); break; case BaseBlock.Types.EnhancedPacket: block = EnhancedPacketBlock.Parse(baseblock, ActionOnException); break; default: break; } return(block); } catch (Exception exc) { ActionOnException(exc); return(null); } }
public static void AbstractBlockFactory_ConvertTo_InterfaceDescriptionBlock_Test() { byte[] byteblock = { 1, 0, 0, 0, 136, 0, 0, 0, 1, 0, 0, 0, 255, 255, 0, 0, 2, 0, 50, 0, 92, 68, 101, 118, 105, 99, 101, 92, 78, 80, 70, 95, 123, 68, 65, 51, 70, 56, 65, 55, 54, 45, 55, 49, 55, 69, 45, 52, 69, 65, 55, 45, 57, 69, 68, 53, 45, 48, 51, 57, 56, 68, 68, 69, 57, 67, 49, 55, 69, 125, 0, 0, 9, 0, 1, 0, 6, 0, 0, 0, 12, 0, 43, 0, 54, 52, 45, 98, 105, 116, 32, 87, 105, 110, 100, 111, 119, 115, 32, 55, 32, 83, 101, 114, 118, 105, 99, 101, 32, 80, 97, 99, 107, 32, 49, 44, 32, 98, 117, 105, 108, 100, 32, 55, 54, 48, 49, 0, 0, 0, 0, 0, 136, 0, 0, 0 }; using (MemoryStream stream = new MemoryStream(byteblock)) { using (BinaryReader binaryReader = new BinaryReader(stream)) { AbstractBlock block = AbstractBlockFactory.ReadNextBlock(binaryReader, false, null); Assert.IsNotNull(block); InterfaceDescriptionBlock interfaceBlock = block as InterfaceDescriptionBlock; Assert.IsNotNull(interfaceBlock); Assert.AreEqual(interfaceBlock.LinkType, LinkTypes.Ethernet); Assert.AreEqual(interfaceBlock.SnapLength, 65535); Assert.AreEqual(interfaceBlock.Options.OperatingSystem, "64-bit Windows 7 Service Pack 1, build 7601"); Assert.AreEqual(interfaceBlock.Options.Name, @"\Device\NPF_{DA3F8A76-717E-4EA7-9ED5-0398DDE9C17E}"); Assert.AreEqual(interfaceBlock.Options.TimestampResolution, 6); } } }