Esempio n. 1
0
		public void Run(object state)
		{
			try
			{
				if (Enclosing_Instance.State == DNSState.ANNOUNCED)
				{
					if (count++ < 3 && !info.HasData)
					{
						long now = (DateTime.Now.Ticks - 621355968000000000) / 10000;
						DNSOutgoing out_Renamed = new DNSOutgoing(DNSConstants.FLAGS_QR_QUERY);
						out_Renamed.AddQuestion(new DNSQuestion(info.QualifiedName, DNSConstants.TYPE_SRV, DNSConstants.CLASS_IN));
						out_Renamed.AddQuestion(new DNSQuestion(info.QualifiedName, DNSConstants.TYPE_TXT, DNSConstants.CLASS_IN));
						if (info.server != null)
						{
							out_Renamed.AddQuestion(new DNSQuestion(info.server, DNSConstants.TYPE_A, DNSConstants.CLASS_IN));
						}
						out_Renamed.AddAnswer((DNSRecord) Enclosing_Instance.Cache.get_Renamed(info.QualifiedName, DNSConstants.TYPE_SRV, DNSConstants.CLASS_IN), now);
						out_Renamed.AddAnswer((DNSRecord) Enclosing_Instance.Cache.get_Renamed(info.QualifiedName, DNSConstants.TYPE_TXT, DNSConstants.CLASS_IN), now);
						if (info.server != null)
						{
							out_Renamed.AddAnswer((DNSRecord) Enclosing_Instance.Cache.get_Renamed(info.server, DNSConstants.TYPE_A, DNSConstants.CLASS_IN), now);
						}
						Enclosing_Instance.Send(out_Renamed);
					}
					else
					{
						// After three queries, we can quit.
						// TODO: can omit cancel()?
						//cancel();
						Enclosing_Instance.RemoveListener(info);
					}
					;
				}
				else if (Enclosing_Instance.State == DNSState.CANCELED)
				{
					// TODO: can omit cancel??
					//cancel();
					Enclosing_Instance.RemoveListener(info);
				}
			}
			catch (Exception e)
			{
				logger.Warn("run() exception ", e);
				Enclosing_Instance.Recover();
			}
		}
Esempio n. 2
0
 public void Run(object state)
 {
     try
     {
         if (Enclosing_Instance.State == DNSState.ANNOUNCED)
         {
             if (count++ < 3 && !info.HasData)
             {
                 long        now         = (DateTime.Now.Ticks - 621355968000000000) / 10000;
                 DNSOutgoing out_Renamed = new DNSOutgoing(DNSConstants.FLAGS_QR_QUERY);
                 out_Renamed.AddQuestion(new DNSQuestion(info.QualifiedName, DNSConstants.TYPE_SRV, DNSConstants.CLASS_IN));
                 out_Renamed.AddQuestion(new DNSQuestion(info.QualifiedName, DNSConstants.TYPE_TXT, DNSConstants.CLASS_IN));
                 if (info.server != null)
                 {
                     out_Renamed.AddQuestion(new DNSQuestion(info.server, DNSConstants.TYPE_A, DNSConstants.CLASS_IN));
                 }
                 out_Renamed.AddAnswer((DNSRecord)Enclosing_Instance.Cache.get_Renamed(info.QualifiedName, DNSConstants.TYPE_SRV, DNSConstants.CLASS_IN), now);
                 out_Renamed.AddAnswer((DNSRecord)Enclosing_Instance.Cache.get_Renamed(info.QualifiedName, DNSConstants.TYPE_TXT, DNSConstants.CLASS_IN), now);
                 if (info.server != null)
                 {
                     out_Renamed.AddAnswer((DNSRecord)Enclosing_Instance.Cache.get_Renamed(info.server, DNSConstants.TYPE_A, DNSConstants.CLASS_IN), now);
                 }
                 Enclosing_Instance.Send(out_Renamed);
             }
             else
             {
                 // After three queries, we can quit.
                 // TODO: can omit cancel()?
                 //cancel();
                 Enclosing_Instance.RemoveListener(info);
             }
             ;
         }
         else if (Enclosing_Instance.State == DNSState.CANCELED)
         {
             // TODO: can omit cancel??
             //cancel();
             Enclosing_Instance.RemoveListener(info);
         }
     }
     catch (Exception e)
     {
         logger.Warn("run() exception ", e);
         Enclosing_Instance.Recover();
     }
 }
Esempio n. 3
0
 public void Run(object state)
 {
     try
     {
         if (++count < 3)
         {
             logger.Debug("run() JmDNS canceling service");
             // announce the service
             DNSOutgoing out_Renamed = new DNSOutgoing(DNSConstants.FLAGS_QR_RESPONSE | DNSConstants.FLAGS_AA);
             for (int i = 0; i < infos.Length; i++)
             {
                 ServiceInfo info = infos[i];
                 out_Renamed.AddAnswer(new Pointer(info.type, DNSConstants.TYPE_PTR, DNSConstants.CLASS_IN, ttl, info.QualifiedName), 0);
                 out_Renamed.AddAnswer(new Service(info.QualifiedName, DNSConstants.TYPE_SRV, DNSConstants.CLASS_IN, ttl, info.priority, info.weight, info.port, Enclosing_Instance.localHost.Name), 0);
                 out_Renamed.AddAnswer(new Text(info.QualifiedName, DNSConstants.TYPE_TXT, DNSConstants.CLASS_IN, ttl, info.text), 0);
                 DNSRecord answer = Enclosing_Instance.localHost.DNS4AddressRecord;
                 if (answer != null)
                 {
                     out_Renamed.AddAnswer(answer, 0);
                 }
                 answer = Enclosing_Instance.localHost.DNS6AddressRecord;
                 if (answer != null)
                 {
                     out_Renamed.AddAnswer(answer, 0);
                 }
             }
             Enclosing_Instance.Send(out_Renamed);
         }
         else
         {
             // After three successful announcements, we are finished.
             lock (lock_Renamed)
             {
                 Monitor.PulseAll(lock_Renamed);
             }
             // TODO: omit cancel?
             //cancel();
         }
     }
     catch (Exception e)
     {
         logger.Warn("run() exception ", e);
         Enclosing_Instance.Recover();
     }
 }
Esempio n. 4
0
 public void Run(object state)
 {
     try
     {
         if (Enclosing_Instance.State == DNSState.ANNOUNCED)
         {
             if (count++ < 3)
             {
                 logger.Debug("run() JmDNS querying service");
                 long        now         = (DateTime.Now.Ticks - 621355968000000000) / 10000;
                 DNSOutgoing out_Renamed = new DNSOutgoing(DNSConstants.FLAGS_QR_QUERY);
                 out_Renamed.AddQuestion(new DNSQuestion(type, DNSConstants.TYPE_PTR, DNSConstants.CLASS_IN));
                 foreach (ServiceInfo info in Enclosing_Instance.services.Values)
                 {
                     try
                     {
                         out_Renamed.AddAnswer(new Pointer(info.type, DNSConstants.TYPE_PTR, DNSConstants.CLASS_IN, DNSConstants.DNS_TTL, info.QualifiedName), now);
                     }
                     catch
                     {
                         break;
                     }
                 }
                 Enclosing_Instance.Send(out_Renamed);
             }
             else
             {
                 // After three queries, we can quit.
                 // TODO: can omit?
                 //cancel();
             }
             ;
         }
         else if (Enclosing_Instance.State == DNSState.CANCELED)
         {
             // TODO: can omit?
             //cancel();
         }
     }
     catch (Exception e)
     {
         logger.Warn("run() exception ", e);
         Enclosing_Instance.Recover();
     }
 }
Esempio n. 5
0
		public void Run(object state)
		{
			try
			{
				if (Enclosing_Instance.State == DNSState.ANNOUNCED)
				{
					if (count++ < 3)
					{
						logger.Debug("run() JmDNS querying service");
						long now = (DateTime.Now.Ticks - 621355968000000000) / 10000;
						DNSOutgoing out_Renamed = new DNSOutgoing(DNSConstants.FLAGS_QR_QUERY);
						out_Renamed.AddQuestion(new DNSQuestion(type, DNSConstants.TYPE_PTR, DNSConstants.CLASS_IN));
						foreach (ServiceInfo info in Enclosing_Instance.services.Values)
						{
							try
							{
								out_Renamed.AddAnswer(new Pointer(info.type, DNSConstants.TYPE_PTR, DNSConstants.CLASS_IN, DNSConstants.DNS_TTL, info.QualifiedName), now);
							}
							catch
							{
								break;
							}
						}
						Enclosing_Instance.Send(out_Renamed);
					}
					else
					{
						// After three queries, we can quit.
						// TODO: can omit?
						//cancel();
					}
					;
				}
				else if (Enclosing_Instance.State == DNSState.CANCELED)
				{
					// TODO: can omit?
					//cancel();
				}
			}
			catch (Exception e)
			{
				logger.Warn("run() exception ", e);
				Enclosing_Instance.Recover();
			}
		}
Esempio n. 6
0
        /// <summary> Add an answer to a question. Deal with the case when the
        /// outgoing packet overflows
        /// </summary>
        internal virtual DNSOutgoing AddAnswer(DNSIncoming in_Renamed, IPAddress addr, int port, DNSOutgoing out_Renamed, DNSRecord rec)
        {
            if (out_Renamed == null)
            {
                out_Renamed = new DNSOutgoing(DNSConstants.FLAGS_QR_RESPONSE | DNSConstants.FLAGS_AA);
            }
            try
            {
                out_Renamed.AddAnswer(in_Renamed, rec);
            }
            catch
            {
                out_Renamed.flags |= DNSConstants.FLAGS_TC;
                out_Renamed.id     = in_Renamed.id;
                out_Renamed.Finish();
                Send(out_Renamed);

                out_Renamed = new DNSOutgoing(DNSConstants.FLAGS_QR_RESPONSE | DNSConstants.FLAGS_AA);
                out_Renamed.AddAnswer(in_Renamed, rec);
            }
            return(out_Renamed);
        }
Esempio n. 7
0
 public void Run(object state)
 {
     try
     {
         if (Enclosing_Instance.State == DNSState.ANNOUNCED)
         {
             if (++count < 3)
             {
                 logger.Debug("run() JmDNS querying type");
                 DNSOutgoing out_Renamed = new DNSOutgoing(DNSConstants.FLAGS_QR_QUERY);
                 out_Renamed.AddQuestion(new DNSQuestion("_services._mdns._udp.local.", DNSConstants.TYPE_PTR, DNSConstants.CLASS_IN));
                 foreach (string s in Enclosing_Instance.serviceTypes.Values)
                 {
                     out_Renamed.AddAnswer(new Pointer("_services._mdns._udp.local.", DNSConstants.TYPE_PTR, DNSConstants.CLASS_IN, DNSConstants.DNS_TTL, s), 0);
                 }
                 Enclosing_Instance.Send(out_Renamed);
             }
             else
             {
                 // After three queries, we can quit.
                 // TODO: can we omit this?
                 //cancel();
             }
             ;
         }
         else if (Enclosing_Instance.State == DNSState.CANCELED)
         {
             // TODO: can omit this?
             //cancel();
         }
     }
     catch (Exception e)
     {
         logger.Warn("run() exception ", e);
         Enclosing_Instance.Recover();
     }
 }
Esempio n. 8
0
		public void Run(object state)
		{
			try
			{
				if (Enclosing_Instance.State == DNSState.ANNOUNCED)
				{
					if (++count < 3)
					{
						logger.Debug("run() JmDNS querying type");
						DNSOutgoing out_Renamed = new DNSOutgoing(DNSConstants.FLAGS_QR_QUERY);
						out_Renamed.AddQuestion(new DNSQuestion("_services._mdns._udp.local.", DNSConstants.TYPE_PTR, DNSConstants.CLASS_IN));
						foreach (string s in Enclosing_Instance.serviceTypes.Values)
						{
							out_Renamed.AddAnswer(new Pointer("_services._mdns._udp.local.", DNSConstants.TYPE_PTR, DNSConstants.CLASS_IN, DNSConstants.DNS_TTL, s), 0);
						}
						Enclosing_Instance.Send(out_Renamed);
					}
					else
					{
						// After three queries, we can quit.
						// TODO: can we omit this?
						//cancel();
					}
					;
				}
				else if (Enclosing_Instance.State == DNSState.CANCELED)
				{
					// TODO: can omit this?
					//cancel();
				}
			}
			catch (Exception e)
			{
				logger.Warn("run() exception ", e);
				Enclosing_Instance.Recover();
			}
		}
Esempio n. 9
0
File: mDNS.cs Progetto: pisker/mDNS
		/// <summary> Add an answer to a question. Deal with the case when the
		/// outgoing packet overflows
		/// </summary>
		internal virtual DNSOutgoing AddAnswer(DNSIncoming in_Renamed, IPAddress addr, int port, DNSOutgoing out_Renamed, DNSRecord rec)
		{
			if (out_Renamed == null)
			{
				out_Renamed = new DNSOutgoing(DNSConstants.FLAGS_QR_RESPONSE | DNSConstants.FLAGS_AA);
			}
			try
			{
				out_Renamed.AddAnswer(in_Renamed, rec);
			}
			catch
			{
				out_Renamed.flags |= DNSConstants.FLAGS_TC;
				out_Renamed.id = in_Renamed.id;
				out_Renamed.Finish();
				Send(out_Renamed);
				
				out_Renamed = new DNSOutgoing(DNSConstants.FLAGS_QR_RESPONSE | DNSConstants.FLAGS_AA);
				out_Renamed.AddAnswer(in_Renamed, rec);
			}
			return out_Renamed;
		}
Esempio n. 10
0
		public void Run(object state)
		{
			try
			{
				if (++count < 3)
				{
					logger.Debug("run() JmDNS canceling service");
					// announce the service
					DNSOutgoing out_Renamed = new DNSOutgoing(DNSConstants.FLAGS_QR_RESPONSE | DNSConstants.FLAGS_AA);
					for (int i = 0; i < infos.Length; i++)
					{
						ServiceInfo info = infos[i];
						out_Renamed.AddAnswer(new Pointer(info.type, DNSConstants.TYPE_PTR, DNSConstants.CLASS_IN, ttl, info.QualifiedName), 0);
						out_Renamed.AddAnswer(new Service(info.QualifiedName, DNSConstants.TYPE_SRV, DNSConstants.CLASS_IN, ttl, info.priority, info.weight, info.port, Enclosing_Instance.localHost.Name), 0);
						out_Renamed.AddAnswer(new Text(info.QualifiedName, DNSConstants.TYPE_TXT, DNSConstants.CLASS_IN, ttl, info.text), 0);
						DNSRecord answer = Enclosing_Instance.localHost.DNS4AddressRecord;
						if (answer != null)
							out_Renamed.AddAnswer(answer, 0);
						answer = Enclosing_Instance.localHost.DNS6AddressRecord;
						if (answer != null)
							out_Renamed.AddAnswer(answer, 0);
					}
					Enclosing_Instance.Send(out_Renamed);
				}
				else
				{
					// After three successful announcements, we are finished.
					lock (lock_Renamed)
					{
						Monitor.PulseAll(lock_Renamed);
					}
					// TODO: omit cancel?
					//cancel();
				}
			}
			catch (Exception e)
			{
				logger.Warn("run() exception ", e);
				Enclosing_Instance.Recover();
			}
		}