internal override void ReadRDATA(Internal.ByteReader reader)
{
if (Base.RDLENGTH != 16)
throw new InvalidResponseException(String.Format(
"Invalid RDLENGTH value {0}: expected 16.",
Base.RDLENGTH));
byte[] buf = reader.ReadBytes(16);
ADDRESS = new IPAddress(buf);
if (ADDRESS.AddressFamily != System.Net.Sockets.AddressFamily.InterNetworkV6)
throw new InvalidResponseException(String.Format(
"Not an IPv6 address: {0}.", ADDRESS.ToString()));
}
internal override void ReadRDATA(Internal.ByteReader reader)
{
RDATA = reader.ReadBytes(Base.RDLENGTH);
}
internal override void ReadRDATA(Internal.ByteReader reader)
{
// The format of the data within a DNS TXT record is one or more
// strings, packed together in memory without any intervening gaps
// or padding bytes for word alignment.
//
// The format of each constituent string within the DNS TXT record is
// a single length byte, followed by 0-255 bytes of text data.
// TXT-DATA strings are not guaranteed to consist purely of ASCII printable
// characters though this is usually the case.
List<Datagram> strings = new List<Datagram>();
for (int total = 0; total < Base.RDLENGTH; )
{
byte length = reader.ReadByte();
if (length > 0)
{
if (total + length >= Base.RDLENGTH)
throw new InvalidResponseException(
"Invalid length byte in TXT record: String data would exceed RDLENGTH.");
strings.Add(reader.ReadBytes(length));
}
total += (length + 1);
}
Strings = strings.ToArray();
}
