private void OnQueryRecordReply(ServiceRef sdRef,
ServiceFlags flags,
uint interfaceIndex,
ServiceError errorCode,
string fullname,
ServiceType rrtype,
ServiceClass rrclass,
ushort rdlen,
IntPtr rdata,
uint ttl,
IntPtr context)
{
switch (rrtype)
{
case ServiceType.A:
case ServiceType.AAAA:
IPAddress address;
if (rdlen == 4)
{
// ~4.5 times faster than Marshal.Copy into byte[4]
var addressRaw = (uint)(Marshal.ReadByte(rdata, 3) << 24);
addressRaw |= (uint)(Marshal.ReadByte(rdata, 2) << 16);
addressRaw |= (uint)(Marshal.ReadByte(rdata, 1) << 8);
addressRaw |= Marshal.ReadByte(rdata, 0);
address = new IPAddress(addressRaw);
}
else if (rdlen == 16)
{
var addressRaw = new byte[rdlen];
Marshal.Copy(rdata, addressRaw, 0, rdlen);
address = new IPAddress(addressRaw, interfaceIndex);
}
else
{
break;
}
if (this.hostentry == null)
{
this.hostentry = new IPHostEntry {
HostName = this.hosttarget
};
}
if (this.hostentry.AddressList != null)
{
var list = new ArrayList(this.hostentry.AddressList)
{
address
};
this.hostentry.AddressList = list.ToArray(typeof(IPAddress)) as IPAddress[];
}
else
{
this.hostentry.AddressList = new[] { address };
}
//ServiceResolvedEventHandler handler = this.Resolved ;
//if (handler != null)
// handler (this, new ServiceResolvedEventArgs (this)) ;
break;
case ServiceType.TXT:
this.TxtRecord?.Dispose();
this.TxtRecord = new TxtRecord(rdlen, rdata);
break;
}
if ((flags & ServiceFlags.MoreComing) != ServiceFlags.MoreComing)
{
sdRef.Deallocate();
}
}
private void OnResolveReply(ServiceRef sdRef,
ServiceFlags flags,
uint interfaceIndex,
ServiceError errorCode,
IntPtr fullname,
string hosttarget,
ushort port,
ushort txtLen,
IntPtr txtRecord,
IntPtr contex)
{
this.IsResolved = true;
this.resolvePending = false;
this.InterfaceIndex = interfaceIndex;
this.FullName = Native.Utf8toString(fullname);
this.port = (ushort)IPAddress.NetworkToHostOrder((short)port);
this.TxtRecord = new TxtRecord(txtLen, txtRecord);
this.hosttarget = hosttarget;
sdRef.Deallocate();
// Run an A query to resolve the IP address
ServiceRef sd_ref;
if ((this.AddressProtocol == AddressProtocol.Any) || (this.AddressProtocol == AddressProtocol.IPv4))
{
ServiceError error = Native.DNSServiceQueryRecord(out sd_ref,
ServiceFlags.None,
interfaceIndex,
hosttarget,
ServiceType.A,
ServiceClass.IN,
this.queryRecordReplyHandler,
IntPtr.Zero);
if (error != ServiceError.NoError)
{
throw new ServiceErrorException(error);
}
sd_ref.Process();
}
if ((this.AddressProtocol == AddressProtocol.Any) || (this.AddressProtocol == AddressProtocol.IPv6))
{
ServiceError error = Native.DNSServiceQueryRecord(out sd_ref,
ServiceFlags.None,
interfaceIndex,
hosttarget,
ServiceType.AAAA,
ServiceClass.IN,
this.queryRecordReplyHandler,
IntPtr.Zero);
if (error != ServiceError.NoError)
{
throw new ServiceErrorException(error);
}
sd_ref.Process();
}
if (this.hostentry.AddressList != null)
{
ServiceResolvedEventHandler handler = this.Resolved;
handler?.Invoke(this, new ServiceResolvedEventArgs(this));
}
}
