internal override DnsResourceData CreateInstance(DataSegment data)
{
int offset = 0;
DataSegment dataSegment = DnsResourceData.ReadString(data, ref offset);
if (dataSegment == null)
{
return((DnsResourceData)null);
}
return((DnsResourceData) new DnsResourceDataString(dataSegment));
}
internal static List <DataSegment> ReadStrings(DataSegment data, int numExpected = 0)
{
List <DataSegment> list = new List <DataSegment>(numExpected);
int offset = 0;
while (offset != data.Length)
{
DataSegment dataSegment = DnsResourceData.ReadString(data, ref offset);
if (dataSegment == null)
{
return((List <DataSegment>)null);
}
list.Add(dataSegment);
}
return(list);
}
internal override DnsResourceData CreateInstance(DnsDatagram dns, int offsetInDns, int length)
{
if (length < 8)
{
return((DnsResourceData)null);
}
ushort order = dns.ReadUShort(offsetInDns, Endianity.Big);
ushort preference = dns.ReadUShort(offsetInDns + 2, Endianity.Big);
DataSegment data = dns.Subsegment(offsetInDns + 4, length - 4);
int offset = 0;
DataSegment flags = DnsResourceData.ReadString(data, ref offset);
if (flags == null || !DnsResourceDataNamingAuthorityPointer.IsLegalFlags(flags))
{
return((DnsResourceData)null);
}
DataSegment services = DnsResourceData.ReadString(data, ref offset);
if (services == null)
{
return((DnsResourceData)null);
}
DataSegment regularExpression = DnsResourceData.ReadString(data, ref offset);
if (regularExpression == null)
{
return((DnsResourceData)null);
}
DnsDomainName domainName;
int numBytesRead;
if (!DnsDomainName.TryParse(dns, offsetInDns + 4 + offset, length - 4 - offset, out domainName, out numBytesRead))
{
return((DnsResourceData)null);
}
if (4 + offset + numBytesRead != length)
{
return((DnsResourceData)null);
}
return((DnsResourceData) new DnsResourceDataNamingAuthorityPointer(order, preference, flags, services, regularExpression, domainName));
}
internal override DnsResourceData CreateInstance(DataSegment data)
{
if (data.Length < 4)
{
return((DnsResourceData)null);
}
ushort priority = data.ReadUShort(0, Endianity.Big);
ushort weight = data.ReadUShort(2, Endianity.Big);
List <DataSegment> list = new List <DataSegment>();
int offset = 4;
while (data.Length > offset)
{
DataSegment dataSegment = DnsResourceData.ReadString(data, ref offset);
if (dataSegment == null)
{
return((DnsResourceData)null);
}
list.Add(dataSegment);
}
return((DnsResourceData) new DnsResourceDataUri(priority, weight, (IList <DataSegment>)list));
}
