internal static IpV6ExtensionHeader CreateInstanceStandard(IpV4Protocol nextHeader, DataSegment extensionHeaderData, out int numBytesRead)
{
numBytesRead = 0;
if (extensionHeaderData.Length < MinimumLength)
{
return(null);
}
IpV4Protocol nextNextHeader = (IpV4Protocol)extensionHeaderData[Offset.NextHeader];
int length = (extensionHeaderData[Offset.HeaderExtensionLength] + 1) * 8;
if (extensionHeaderData.Length < length)
{
return(null);
}
DataSegment data = extensionHeaderData.Subsegment(Offset.Data, length - Offset.Data);
numBytesRead = length;
// TODO: Implement Shim6.
switch (nextHeader)
{
case IpV4Protocol.IpV6HopByHopOption: // 0
return(IpV6ExtensionHeaderHopByHopOptions.ParseData(nextNextHeader, data));
case IpV4Protocol.IpV6Route: // 43
return(IpV6ExtensionHeaderRouting.ParseData(nextNextHeader, data));
case IpV4Protocol.FragmentHeaderForIpV6: // 44
return(IpV6ExtensionHeaderFragmentData.ParseData(nextNextHeader, data));
case IpV4Protocol.IpV6Opts: // 60
return(IpV6ExtensionHeaderDestinationOptions.ParseData(nextNextHeader, data));
case IpV4Protocol.MobilityHeader: // 135
return(IpV6ExtensionHeaderMobility.ParseData(nextNextHeader, data));
default:
throw new InvalidOperationException("Invalid next header value" + nextHeader);
}
}
internal override bool EqualsRoutingData(IpV6ExtensionHeaderRouting other)
{
return(EqualsRoutingData(other as IpV6ExtensionHeaderRoutingProtocolLowPowerAndLossyNetworks));
}
internal override bool EqualsRoutingData(IpV6ExtensionHeaderRouting other)
{
return(EqualsRoutingData(other as IpV6ExtensionHeaderRoutingSourceRoute));
}
internal abstract bool EqualsRoutingData(IpV6ExtensionHeaderRouting other);
private bool EqualsData(IpV6ExtensionHeaderRouting other)
{
return(other != null &&
RoutingType == other.RoutingType && SegmentsLeft == other.SegmentsLeft && EqualsRoutingData(other));
}
internal override bool EqualsRoutingData(IpV6ExtensionHeaderRouting other)
{
return(EqualsRoutingData(other as IpV6ExtensionHeaderRoutingHomeAddress));
}