/// <summary>
/// Create a new DNS request.
/// </summary>
/// <param name="id">A 16 bit identifier assigned by the program that generates any kind of query.</param>
/// <param name="rd">Recursion Desired - If RD is set, it directs the name server to pursue the query recursively.</param>
/// <param name="opcode">A four bit field that specifies kind of query in this message.</param>
/// <param name="question"></param>
public Request(ushort id, bool rd, DNS.OPCODE opcode, DNS.Question question)
{
if (Object.ReferenceEquals(null, question))
{
throw new ArgumentNullException("question");
}
Header.ID = id;
Header.QR = DNS.QR.Q;
Header.RD = rd;
Header.OPCODE = opcode;
Questions.Add(question);
}
public void WriteRequestFlags(DNS.OPCODE opcode, bool rd)
{
// only OPCODE and RD may be non-zero
WriteUInt16((ushort)((((int)opcode & 0xF) << 11) | ((rd ? 1 : 0) << 8)));
}
