private void Request(Name name, HeaderOpcode opcode)
{
bool recursionDesired = true;
switch (opcode)
{
case HeaderOpcode.Update:
opcode = HeaderOpcode.Registration;
recursionDesired = false;
break;
case HeaderOpcode.Release:
case HeaderOpcode.WACK:
case HeaderOpcode.Refresh:
recursionDesired = false;
break;
}
Packet packet = new Packet();
packet.Header.NameTrnId = NAME_TRN_ID;
packet.Header.Opcode = opcode;
packet.Header.Flags = HeaderFlags.Broadcast;
if (recursionDesired)
{
packet.Header.Flags |= HeaderFlags.RecursionDesired;
}
packet.Header.Rcode = 0;
packet.Header.QdCount = 1;
packet.Header.ArCount = 1;
packet.QuestionEntries = new QuestionName[1];
packet.QuestionEntries[0].UncompressedName = name.UncompressedName;
packet.QuestionEntries[0].Type = QuestionType.NB;
packet.QuestionEntries[0].Class = QuestionClass.IN;
packet.AdditionalResourceRecords = new ResourceRecord[1];
packet.AdditionalResourceRecords[0].UncompressedName = name.UncompressedName; // TODO: Should use a pointer here
packet.AdditionalResourceRecords[0].Type = ResourceRecordType.NB;
packet.AdditionalResourceRecords[0].Class = ResourceRecordClass.IN;
packet.AdditionalResourceRecords[0].TTL = 0;
byte[] data = new byte[6];
data[0] = (byte)(name.Type == NameType.Group ? 0x80 : 0x00); // NB_FLAGS / bit 15: Group name flag, bit 16-15: 00 B node, 01 P node, 10 M node, 11 reserved, bit 14-8: reserved
data[1] = 0x00; // NB_FLAGS
// NB_ADDRESS
for (int i = 0; i < 4; i++)
{
data[i + 2] = localIP[i];
}
packet.AdditionalResourceRecords[0].Data = data;
data = packet.ToArray();
lock (socket)
socket.SendTo(data, broadcastEndPoint);
}
private void Response(Name name, HeaderOpcode opcode, byte rcode, ushort nameTrnId, EndPoint remoteEndPoint)
{
Packet packet = new Packet();
packet.Header.Response = true;
packet.Header.NameTrnId = nameTrnId;
packet.Header.Opcode = opcode;
packet.Header.Flags = HeaderFlags.AuthoritativeAnswer | HeaderFlags.RecursionDesired;
packet.Header.Rcode = rcode;
packet.Header.AnCount = 1;
packet.AnswerResourceRecords = new ResourceRecord[1];
packet.AnswerResourceRecords[0].UncompressedName = name.UncompressedName;
packet.AnswerResourceRecords[0].Type = ResourceRecordType.NB;
packet.AnswerResourceRecords[0].Class = ResourceRecordClass.IN;
packet.AnswerResourceRecords[0].TTL = 0;
byte[] data = new byte[6];
data[0] = (byte)(name.Type == NameType.Group ? 0x80 : 0x00); // NB_FLAGS / bit 15: Group name flag, bit 16-15: 00 B node, 01 P node, 10 M node, 11 reserved, bit 14-8: reserved
data[1] = 0x00; // NB_FLAGS
// NB_ADDRESS
for (int i = 0; i < 4; i++)
{
data[i + 2] = localIP[i];
}
packet.AnswerResourceRecords[0].Data = data;
data = packet.ToArray();
try
{
lock (socket)
socket.SendTo(data, remoteEndPoint);
}
catch
{
// Handles situations where the remote host is not accessable through the network.
}
}
private void Response(Name name, HeaderOpcode opcode, byte rcode, ushort nameTrnId, EndPoint remoteEndPoint)
{
Packet packet = new Packet();
packet.Header.Response = true;
packet.Header.NameTrnId = nameTrnId;
packet.Header.Opcode = opcode;
packet.Header.Flags = HeaderFlags.AuthoritativeAnswer | HeaderFlags.RecursionDesired;
packet.Header.Rcode = rcode;
packet.Header.AnCount = 1;
packet.AnswerResourceRecords = new ResourceRecord[1];
packet.AnswerResourceRecords[0].UncompressedName = name.UncompressedName;
packet.AnswerResourceRecords[0].Type = ResourceRecordType.NB;
packet.AnswerResourceRecords[0].Class = ResourceRecordClass.IN;
packet.AnswerResourceRecords[0].TTL = 0;
byte[] data = new byte[6];
data[0] = (byte)(name.Type == NameType.Group ? 0x80 : 0x00); // NB_FLAGS / bit 15: Group name flag, bit 16-15: 00 B node, 01 P node, 10 M node, 11 reserved, bit 14-8: reserved
data[1] = 0x00; // NB_FLAGS
// NB_ADDRESS
for (int i = 0; i < 4; i++)
data[i + 2] = localIP[i];
packet.AnswerResourceRecords[0].Data = data;
data = packet.ToArray();
try
{
lock (socket)
socket.SendTo(data, remoteEndPoint);
}
catch
{
// Handles situations where the remote host is not accessable through the network.
}
}
private void Request(Name name, HeaderOpcode opcode)
{
bool recursionDesired = true;
switch (opcode)
{
case HeaderOpcode.Update:
opcode = HeaderOpcode.Registration;
recursionDesired = false;
break;
case HeaderOpcode.Release:
case HeaderOpcode.WACK:
case HeaderOpcode.Refresh:
recursionDesired = false;
break;
}
Packet packet = new Packet();
packet.Header.NameTrnId = NAME_TRN_ID;
packet.Header.Opcode = opcode;
packet.Header.Flags = HeaderFlags.Broadcast;
if (recursionDesired) packet.Header.Flags |= HeaderFlags.RecursionDesired;
packet.Header.Rcode = 0;
packet.Header.QdCount = 1;
packet.Header.ArCount = 1;
packet.QuestionEntries = new QuestionName[1];
packet.QuestionEntries[0].UncompressedName = name.UncompressedName;
packet.QuestionEntries[0].Type = QuestionType.NB;
packet.QuestionEntries[0].Class = QuestionClass.IN;
packet.AdditionalResourceRecords = new ResourceRecord[1];
packet.AdditionalResourceRecords[0].UncompressedName = name.UncompressedName; // TODO: Should use a pointer here
packet.AdditionalResourceRecords[0].Type = ResourceRecordType.NB;
packet.AdditionalResourceRecords[0].Class = ResourceRecordClass.IN;
packet.AdditionalResourceRecords[0].TTL = 0;
byte[] data = new byte[6];
data[0] = (byte)(name.Type == NameType.Group ? 0x80 : 0x00); // NB_FLAGS / bit 15: Group name flag, bit 16-15: 00 B node, 01 P node, 10 M node, 11 reserved, bit 14-8: reserved
data[1] = 0x00; // NB_FLAGS
// NB_ADDRESS
for (int i = 0; i < 4; i++)
data[i + 2] = localIP[i];
packet.AdditionalResourceRecords[0].Data = data;
data = packet.ToArray();
lock (socket)
socket.SendTo(data, broadcastEndPoint);
//try
//{
//}
//catch (Exception ex) { }
}
