protected void EnhanceService(Answer a)
{
switch (a.Type)
{
case Network.Dns.Type.A:
case Network.Dns.Type.AAAA:
foreach (Network.Dns.EndPoint ep in addresses)
{
if (a.DomainName.ToString() == ep.DomainName.ToString())
ep.Resolve(a);
if (ep.Addresses.Count > 0)
resolved.Set();
}
break;
case Network.Dns.Type.NS:
break;
case Network.Dns.Type.CNAME:
break;
case Network.Dns.Type.SOA:
break;
case Network.Dns.Type.WKS:
break;
case Network.Dns.Type.PTR:
if (string.IsNullOrEmpty(Name))
Name = ((Ptr)a.ResponseData).DomainName[0];
if (string.IsNullOrEmpty(Protocol))
Protocol = a.DomainName;
break;
case Network.Dns.Type.HINFO:
break;
case Network.Dns.Type.MINFO:
break;
case Network.Dns.Type.MX:
break;
case Network.Dns.Type.TXT:
if (properties == null || properties.Count == 0)
properties = ((Txt)a.ResponseData).Properties;
break;
case Network.Dns.Type.SRV:
if (HostName == null)
HostName = ((Srv)a.ResponseData).Target;
if (Name == null)
Name = a.DomainName[0];
if (Protocol == null)
Protocol = new DomainName(a.DomainName.Skip(1));
if (addresses.Count == 0)
AddAddress(new Network.Dns.EndPoint() { DomainName = HostName, Port = ((Srv)a.ResponseData).Port });
break;
default:
break;
}
if (a.Ttl == 0)
State = State.Removed;
else
expiration = expiration.AddSeconds(a.Ttl);
}
public void Resolve(Answer a)
{
if (a.Type == Type.SRV)
{
DomainName = ((Srv)a.ResponseData).Target;
Port = ((Srv)a.ResponseData).Port;
}
if (a.Type == Type.A || a.Type == Type.AAAA)
{
IPAddress address = ((HostAddress)a.ResponseData).Address;
if (!Addresses.Contains(address))
Addresses.Add(address);
}
}
internal static Answer Get(System.IO.BinaryReader reader)
{
Answer a = new Answer();
a.DomainName = DomainName.Get(reader);
ushort s;
Message.FromBytes(reader.ReadBytes(2), out s);
a.Type = (Type)s;
Message.FromBytes(reader.ReadBytes(2), out s);
a.Class = (Class)s;
uint ttl;
Message.FromBytes(reader.ReadBytes(4), out ttl);
a.Ttl = ttl;
a.ResponseData = ResponseData.Get(a.Type, reader);
return a;
}
private Service(Answer a)
: this()
{
EnhanceService(a);
}
private static Service Build(Answer answer, Message message)
{
Service s = new Service(answer);
foreach (Answer a in message.Additionals)
s.EnhanceService(a);
return s;
}