internal override void ProcessReply(CallbackMessage message, bool moreComing)
{
if (message is LookupCallbackMessage lcm)
{
// *** Comment from Bonjour/dnssd_clientstubb/handle_addrinfo_response() function ***
// We only generate client callbacks for A and AAAA results (including NXDOMAIN results for
// those types, if the client has requested those with the kDNSServiceFlagsReturnIntermediates).
// Other result types, specifically CNAME referrals, are not communicated to the client, because
// the DNSServiceGetAddrInfoReply interface doesn't have any meaningful way to communiate CNAME referrals.
IPAddress ipa = null;
if (lcm.Payload.RecordLength != 0 && (lcm.Payload.RecordType == ResourceRecordType.A || lcm.Payload.RecordType == ResourceRecordType.AAAA))
{
var i = 0;
ipa = new IPAddress(ServiceMessage.GetSubArray(lcm.Payload.RecordData, ref i, lcm.Payload.RecordLength));
}
var eventType = LookupEventType.None;
if (lcm.Payload.Error != ServiceError.NoError)
{
eventType = lcm.Payload.Error == ServiceError.Timeout ? LookupEventType.Timeout :
lcm.Payload.Error == ServiceError.NoSuchRecord ? LookupEventType.NoSuchRecord : LookupEventType.Error;
}
else
{
eventType = lcm.Payload.Flags.HasFlag(ServiceFlags.Add) ? LookupEventType.Added : LookupEventType.Removed;
}
LookupEvent?.Invoke(Token, new LookupEventArgs(eventType, lcm.Payload.HostName, ipa, lcm.Payload.TimeToLive, lcm.Payload.InterfaceIndex, moreComing));
}
}
public async Task <IOperationToken> LookupAsync(string hostName, ProtocolFlags flags, bool withTimeout = false, uint interfaceIndex = 0, object context = null)
{
await CheckConnectionAsync();
var op = new LookupOperation(hostName, flags, withTimeout, interfaceIndex, context);
op.LookupEvent += (s, e) => LookupEvent?.Invoke(s, e);
await _connection.AddAndExecuteSubordinate(op);
return(op.Token);
}
