public override ILayer ExtractLayer()
{
switch (this.MessageType)
{
case IgmpMessageType.MembershipQuery:
switch (this.QueryVersion)
{
case IgmpQueryVersion.Version1:
IgmpQueryVersion1Layer queryVersion1Layer = new IgmpQueryVersion1Layer();
queryVersion1Layer.GroupAddress = this.GroupAddress;
return((ILayer)queryVersion1Layer);
case IgmpQueryVersion.Version2:
IgmpQueryVersion2Layer queryVersion2Layer = new IgmpQueryVersion2Layer();
queryVersion2Layer.MaxResponseTime = this.MaxResponseTime;
queryVersion2Layer.GroupAddress = this.GroupAddress;
return((ILayer)queryVersion2Layer);
case IgmpQueryVersion.Version3:
return((ILayer) new IgmpQueryVersion3Layer()
{
SourceAddresses = this.SourceAddresses,
MaxResponseTime = this.MaxResponseTime,
GroupAddress = this.GroupAddress,
IsSuppressRouterSideProcessing = this.IsSuppressRouterSideProcessing,
QueryRobustnessVariable = this.QueryRobustnessVariable,
QueryInterval = this.QueryInterval
});
default:
throw new InvalidOperationException("Invalid Query Version " + (object)this.QueryVersion);
}
case IgmpMessageType.MembershipReportVersion1:
IgmpReportVersion1Layer reportVersion1Layer = new IgmpReportVersion1Layer();
reportVersion1Layer.GroupAddress = this.GroupAddress;
return((ILayer)reportVersion1Layer);
case IgmpMessageType.MembershipReportVersion2:
IgmpReportVersion2Layer reportVersion2Layer = new IgmpReportVersion2Layer();
reportVersion2Layer.MaxResponseTime = this.MaxResponseTime;
reportVersion2Layer.GroupAddress = this.GroupAddress;
return((ILayer)reportVersion2Layer);
case IgmpMessageType.LeaveGroupVersion2:
IgmpLeaveGroupVersion2Layer groupVersion2Layer = new IgmpLeaveGroupVersion2Layer();
groupVersion2Layer.MaxResponseTime = this.MaxResponseTime;
groupVersion2Layer.GroupAddress = this.GroupAddress;
return((ILayer)groupVersion2Layer);
case IgmpMessageType.MembershipReportVersion3:
return((ILayer) new IgmpReportVersion3Layer()
{
GroupRecords = Enumerable.ToList <IgmpGroupRecord>(Enumerable.Select <IgmpGroupRecordDatagram, IgmpGroupRecord>((IEnumerable <IgmpGroupRecordDatagram>) this.GroupRecords, (Func <IgmpGroupRecordDatagram, IgmpGroupRecord>)(record => record.ToGroupRecord()))).AsReadOnly()
});
default:
throw new InvalidOperationException("Invalid message type " + (object)this.MessageType);
}
}
public void DifferentIgmpSimpleLayersTest()
{
IgmpSimpleLayer layer1 = new IgmpQueryVersion1Layer
{
GroupAddress = new IpV4Address("1.2.3.4")
};
IgmpSimpleLayer layer2 = new IgmpQueryVersion2Layer
{
GroupAddress = new IpV4Address("1.2.3.4"),
MaxResponseTime = TimeSpan.FromMinutes(55)
};
Assert.IsFalse(layer1.Equals(layer2));
}
/// <summary>
/// This function build an IGMP over IPv4 over Ethernet packet.
/// </summary>
private static Packet BuildIgmpPacket()
{
EthernetLayer ethernetLayer =
new EthernetLayer
{
Source = new MacAddress("01:01:01:01:01:01"),
Destination = new MacAddress("02:02:02:02:02:02"),
EtherType = EthernetType.None, // Will be filled automatically.
};
IpV4Layer ipV4Layer =
new IpV4Layer
{
Source = new IpV4Address("1.2.3.4"),
CurrentDestination = new IpV4Address("11.22.33.44"),
Fragmentation = IpV4Fragmentation.None,
HeaderChecksum = null, // Will be filled automatically.
Identification = 123,
Options = IpV4Options.None,
Protocol = null, // Will be filled automatically.
Ttl = 100,
TypeOfService = 0,
};
IgmpQueryVersion1Layer igmpLayer =
new IgmpQueryVersion1Layer
{
GroupAddress = new IpV4Address("1.2.3.4"),
};
PacketBuilder builder = new PacketBuilder(ethernetLayer, ipV4Layer, igmpLayer);
return builder.Build(DateTime.Now);
}