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);
}
}
}
