protected override bool CalculateIsValid()
{
if (this.Length < 8 || !this.IsChecksumCorrect)
{
return(false);
}
switch (this.MessageType)
{
case IgmpMessageType.MembershipQuery:
switch (this.QueryVersion)
{
case IgmpQueryVersion.Version1:
case IgmpQueryVersion.Version2:
return(this.Length == 8);
case IgmpQueryVersion.Version3:
return(this.Length == IgmpDatagram.GetQueryVersion3Length((int)this.NumberOfSources));
default:
return(false);
}
case IgmpMessageType.MembershipReportVersion1:
if (this.Length == 8)
{
return((int)this.MaxResponseCode == 0);
}
return(false);
case IgmpMessageType.MembershipReportVersion2:
case IgmpMessageType.LeaveGroupVersion2:
return(this.Length == 8);
case IgmpMessageType.MembershipReportVersion3:
if ((int)this.MaxResponseCode == 0 && this.Length == 8 + Enumerable.Sum <IgmpGroupRecordDatagram>((IEnumerable <IgmpGroupRecordDatagram>) this.GroupRecords, (Func <IgmpGroupRecordDatagram, int>)(record => record.Length)))
{
return(Enumerable.All <IgmpGroupRecordDatagram>((IEnumerable <IgmpGroupRecordDatagram>) this.GroupRecords, (Func <IgmpGroupRecordDatagram, bool>)(record => record.IsValid)));
}
return(false);
default:
return(false);
}
}
