/// <summary>
/// This method writes the resource record's data (including its
/// length) to the packet beginning at the offset passed.
/// </summary>
/// <param name="message">The DNS message being serialized.</param>
/// <param name="packet">The packet buffer.</param>
/// <param name="offset">
/// The offset in the packet where the data will be written.
/// This parameter will return set to the offset of the first
/// byte after the written data.
/// </param>
protected override void WriteData(DnsMessage message, byte[] packet, ref int offset)
{
int lenPos = offset; // Remember where the length goes
offset += 2;
message.WriteName(packet, ref offset, cname);
Helper.WriteInt16(packet, ref lenPos, offset - lenPos - 2); // Go back and write the length
}
/// <summary>
/// This method writes the resource record to the packet beginning
/// at the offset passed.
/// </summary>
/// <param name="message">The DNS message being serialized.</param>
/// <param name="packet">The packet buffer.</param>
/// <param name="offset">
/// The offset in the packet where the record will be written.
/// This parameter will return set to the offset of the first
/// byte after the written record.
/// </param>
public void Write(DnsMessage message, byte[] packet, ref int offset)
{
Assertion.Test(rrtype != DnsRRType.UNKNOWN, "RRType is not set.");
message.WriteName(packet, ref offset, rname);
Helper.WriteInt16(packet, ref offset, (int)rrtype);
Helper.WriteInt16(packet, ref offset, (int)qclass);
Helper.WriteInt32(packet, ref offset, (int)ttl);
WriteData(message, packet, ref offset);
}