private static void SendQuery(Socket sock, String service)
{
IPEndPoint remoteEp = new IPEndPoint(IPAddress.Parse(mdnsIP), mdnsPort);
mDNSPacket dnsPkt = new mDNSPacket();
mDNSHeader mdnsHdr = new mDNSHeader();
mDNSQuestion mdnsQ = new mDNSQuestion(service, QType.ANY, QClass.IN);
mdnsHdr.AA = false;
mdnsHdr.TC = false;
mdnsHdr.RD = false;
mdnsHdr.RA = false;
mdnsHdr.RCODE = RespCode.NoError;
mdnsHdr.OPCODE = OpCode.QUERY;
mdnsHdr.QR = false;
mdnsHdr.qdcount = 1;
mdnsHdr.an_rrs = 0;
mdnsHdr.ns_rrs = 0;
mdnsHdr.ar_rrs = 0;
dnsPkt.Header = mdnsHdr;
dnsPkt.Question = mdnsQ;
dnsPkt.print();
Console.WriteLine("Sending Query: " + service);
sock.SendTo(dnsPkt.data, remoteEp);
}
private static void AnnounceService(Socket sock, String service)
{
IPEndPoint remoteEp = new IPEndPoint(IPAddress.Parse(mdnsIP), mdnsPort);
mDNSPacket dnsPkt = new mDNSPacket();
mDNSHeader mdnsHdr = new mDNSHeader();
mDNSAnswerRR mdnsAnRR = new mDNSAnswerRR(service, Type.AAAA, (Class.IN | Class.CF), 4500, 16);
Byte[] rdata = new Byte[16];
mdnsAnRR.RDATA = rdata;
mdnsHdr.AA = true;
mdnsHdr.TC = false;
mdnsHdr.RD = false;
mdnsHdr.RA = false;
mdnsHdr.RCODE = RespCode.NoError;
mdnsHdr.OPCODE = OpCode.QUERY;
mdnsHdr.QR = true;
mdnsHdr.qdcount = 0;
mdnsHdr.an_rrs = 1;
mdnsHdr.ns_rrs = 0;
mdnsHdr.ar_rrs = 0;
dnsPkt.Header = mdnsHdr;
dnsPkt.AnswerRR = mdnsAnRR;
dnsPkt.print();
Console.WriteLine("Announcing Service: " + service);
sock.SendTo(dnsPkt.data, remoteEp);
}
static void PrintTestPacket()
{
mDNSPacket dnsPkt = new mDNSPacket();
mDNSHeader mdnsHdr = new mDNSHeader();
mDNSAnswerRR mdnsAnRR = new mDNSAnswerRR("_services._dns-sd._udp.local.", Type.TXT, Class.IN, 4500, 16);
mDNSAdditionalRR mdnsArRR = new mDNSAdditionalRR("_services._dns-sd._udp.local.", Type.TXT, Class.IN, 4500, 16);
Byte[] rdata = new Byte[16];
mdnsAnRR.RDATA = rdata;
mdnsArRR.RDATA = rdata;
mdnsHdr.AA = true;
mdnsHdr.TC = false;
mdnsHdr.RD = false;
mdnsHdr.RA = false;
mdnsHdr.RCODE = RespCode.NoError;
mdnsHdr.QR = true;
mdnsHdr.qdcount = 0;
mdnsHdr.an_rrs = 3;
mdnsHdr.ns_rrs = 0;
mdnsHdr.ar_rrs = 4;
dnsPkt.Header = mdnsHdr;
dnsPkt.AnswerRR = mdnsAnRR;
dnsPkt.AnswerRR = mdnsAnRR;
dnsPkt.AnswerRR = mdnsAnRR;
dnsPkt.AdditionalRR = mdnsArRR;
dnsPkt.AdditionalRR = mdnsArRR;
dnsPkt.AdditionalRR = mdnsArRR;
dnsPkt.AdditionalRR = mdnsArRR;
dnsPkt.print();
}