internal override void Write(DNSOutgoing out_Renamed)
{
out_Renamed.WriteShort(priority);
out_Renamed.WriteShort(weight);
out_Renamed.WriteShort(port);
out_Renamed.WriteName(server);
}
internal override void Write(DNSOutgoing out_Renamed)
{
out_Renamed.WriteShort(priority);
out_Renamed.WriteShort(weight);
out_Renamed.WriteShort(port);
out_Renamed.WriteName(server);
}
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();
}
}
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();
}
}
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();
}
}
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();
}
}
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();
}
}
internal override void Write(DNSOutgoing out_Renamed)
{
if (addr != null)
{
sbyte[] buffer = SupportClass.ToSByteArray(addr.GetAddressBytes());
if (DNSConstants.TYPE_A == type)
{
// If we have a type A records we should answer with a IPv4 address
if (addr.AddressFamily == AddressFamily.InterNetwork)
{
// All is good
}
else
{
// Get the last four bytes
sbyte[] tempbuffer = buffer;
buffer = new sbyte[4];
Array.Copy(tempbuffer, 12, buffer, 0, 4);
}
}
else
{
// If we have a type AAAA records we should answer with a IPv6 address
if (addr.AddressFamily == AddressFamily.InterNetwork)
{
sbyte[] tempbuffer = buffer;
buffer = new sbyte[16];
for (int i = 0; i < 16; i++)
{
if (i < 11)
{
buffer[i] = tempbuffer[i - 12];
}
else
{
buffer[i] = 0;
}
}
}
}
int length = buffer.Length;
out_Renamed.WriteBytes(buffer, 0, length);
}
}
/// <summary> Send an outgoing multicast DNS message.</summary>
internal async Task Send(DNSOutgoing out_Renamed)
{
out_Renamed.Finish();
if (!out_Renamed.Empty)
{
SupportClass.PacketSupport packet = new SupportClass.PacketSupport(SupportClass.ToByteArray(out_Renamed.data), out_Renamed.off, new IPEndPoint(group, DNSConstants.MDNS_PORT));
try
{
DNSIncoming msg = new DNSIncoming(packet);
logger.Debug("send() JmDNS out:" + msg.Print(true));
}
catch (IOException e)
{
logger.Error("send(DNSOutgoing) - JmDNS can not parse what it sends!!!", e);
}
await SupportClass.UdpClientSupport.Send(socket, packet);
}
}
internal override void Write(DNSOutgoing out_Renamed)
{
if (addr != null)
{
sbyte[] buffer = SupportClass.ToSByteArray(addr.GetAddressBytes());
if (DNSConstants.TYPE_A == type)
{
// If we have a type A records we should answer with a IPv4 address
if (addr.AddressFamily == AddressFamily.InterNetwork)
{
// All is good
}
else
{
// Get the last four bytes
sbyte[] tempbuffer = buffer;
buffer = new sbyte[4];
Array.Copy(tempbuffer, 12, buffer, 0, 4);
}
}
else
{
// If we have a type AAAA records we should answer with a IPv6 address
if (addr.AddressFamily == AddressFamily.InterNetwork)
{
sbyte[] tempbuffer = buffer;
buffer = new sbyte[16];
for (int i = 0; i < 16; i++)
{
if (i < 11)
buffer[i] = tempbuffer[i - 12];
else
buffer[i] = 0;
}
}
}
int length = buffer.Length;
out_Renamed.WriteBytes(buffer, 0, length);
}
}
/// <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);
}
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();
}
}
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();
}
}
/// <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;
}
internal override DNSOutgoing AddAnswer(mDNS dns, DNSIncoming in_Renamed, IPAddress addr, int port, DNSOutgoing out_Renamed)
{
return out_Renamed;
}
public void Run(object state)
{
lock (Enclosing_Instance.IOLock)
{
DNSOutgoing out_Renamed = null;
try
{
// send probes for JmDNS itself
if (Enclosing_Instance.State == taskState && Enclosing_Instance.Task == this)
{
if (out_Renamed == null)
{
out_Renamed = new DNSOutgoing(DNSConstants.FLAGS_QR_QUERY);
}
out_Renamed.AddQuestion(new DNSQuestion(Enclosing_Instance.localHost.Name, DNSConstants.TYPE_ANY, DNSConstants.CLASS_IN));
DNSRecord answer = Enclosing_Instance.localHost.DNS4AddressRecord;
if (answer != null)
out_Renamed.AddAuthorativeAnswer(answer);
answer = Enclosing_Instance.localHost.DNS6AddressRecord;
if (answer != null)
out_Renamed.AddAuthorativeAnswer(answer);
Enclosing_Instance.AdvanceState();
}
// send probes for services
// Defensively copy the services into a local list,
// to prevent race conditions with methods registerService
// and unregisterService.
IList list;
lock (Enclosing_Instance)
{
list = new ArrayList(Enclosing_Instance.services.Values);
}
foreach (ServiceInfo info in list)
{
lock (info)
{
if (info.State == taskState && info.task == this)
{
info.AdvanceState();
logger.Info("run() JmDNS probing " + info.QualifiedName + " state " + info.State);
if (out_Renamed == null)
{
out_Renamed = new DNSOutgoing(DNSConstants.FLAGS_QR_QUERY);
out_Renamed.AddQuestion(new DNSQuestion(info.QualifiedName, DNSConstants.TYPE_ANY, DNSConstants.CLASS_IN));
}
out_Renamed.AddAuthorativeAnswer(new Service(info.QualifiedName, DNSConstants.TYPE_SRV, DNSConstants.CLASS_IN, DNSConstants.DNS_TTL, info.priority, info.weight, info.port, info.server));
}
}
}
if (out_Renamed != null)
{
logger.Debug("run() JmDNS probing #" + taskState);
Enclosing_Instance.Send(out_Renamed);
}
else
{
// If we have nothing to send, another timer taskState ahead
// of us has done the job for us. We can cancel.
cancel();
return ;
}
}
catch (Exception e)
{
logger.Warn("run() exception ", e);
Enclosing_Instance.Recover();
}
taskState = taskState.Advance();
if (!taskState.Probing)
{
cancel();
new Announcer(enclosingInstance).start();
}
}
}
internal override void Write(DNSOutgoing out_Renamed)
{
out_Renamed.WriteBytes(text, 0, text.Length);
}
internal override void Write(DNSOutgoing out_Renamed)
{
out_Renamed.WriteBytes(text, 0, text.Length);
}
/// <summary> Write this record into an outgoing message.</summary> internal abstract void Write(DNSOutgoing out_Renamed);
public void Run(object state)
{
DNSOutgoing out_Renamed = null;
try
{
// send probes for JmDNS itself
if (Enclosing_Instance.State == taskState)
{
if (out_Renamed == null)
{
out_Renamed = new DNSOutgoing(DNSConstants.FLAGS_QR_RESPONSE | DNSConstants.FLAGS_AA);
}
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.AdvanceState();
}
// send announces for services
// Defensively copy the services into a local list,
// to prevent race conditions with methods registerService
// and unregisterService.
IList list;
lock (Enclosing_Instance)
{
list = new ArrayList(Enclosing_Instance.services.Values);
}
foreach (ServiceInfo info in list)
{
lock (info)
{
if (info.State == taskState && info.task == this)
{
info.AdvanceState();
logger.Debug("run() JmDNS announcing " + info.QualifiedName + " state " + info.State);
if (out_Renamed == null)
{
out_Renamed = new DNSOutgoing(DNSConstants.FLAGS_QR_RESPONSE | DNSConstants.FLAGS_AA);
}
out_Renamed.AddAnswer(new Pointer(info.type, DNSConstants.TYPE_PTR, DNSConstants.CLASS_IN, DNSConstants.DNS_TTL, info.QualifiedName), 0);
out_Renamed.AddAnswer(new Service(info.QualifiedName, DNSConstants.TYPE_SRV, DNSConstants.CLASS_IN, DNSConstants.DNS_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, DNSConstants.DNS_TTL, info.text), 0);
}
}
}
if (out_Renamed != null)
{
logger.Debug("run() JmDNS announcing #" + taskState);
Enclosing_Instance.Send(out_Renamed);
}
else
{
// If we have nothing to send, another timer taskState ahead
// of us has done the job for us. We can cancel.
cancel();
}
}
catch (Exception e)
{
logger.Warn("run() exception ", e);
Enclosing_Instance.Recover();
}
taskState = taskState.Advance();
if (!taskState.Announcing)
{
cancel();
new Renewer(enclosingInstance).start();
}
}
internal override void Write(DNSOutgoing out_Renamed)
{
out_Renamed.WriteName(alias);
}
internal override void Write(DNSOutgoing out_Renamed)
{
out_Renamed.WriteName(alias);
}
/// <summary> Write this record into an outgoing message.</summary> internal abstract void Write(DNSOutgoing out_Renamed);
internal override DNSOutgoing AddAnswer(mDNS dns, DNSIncoming in_Renamed, IPAddress addr, int port, DNSOutgoing out_Renamed)
{
ServiceInfo info = (ServiceInfo) dns.services[name.ToLower()];
if (info != null)
{
if (this.port == info.port != server.Equals(dns.LocalHost.Name))
{
return dns.AddAnswer(in_Renamed, addr, port, out_Renamed, new Service(info.QualifiedName, DNSConstants.TYPE_SRV, DNSConstants.CLASS_IN | DNSConstants.CLASS_UNIQUE, DNSConstants.DNS_TTL, info.priority, info.weight, info.port, dns.LocalHost.Name));
}
}
return out_Renamed;
}
/// <summary> Send an outgoing multicast DNS message.</summary>
internal async Task Send(DNSOutgoing out_Renamed)
{
out_Renamed.Finish();
if (!out_Renamed.Empty)
{
SupportClass.PacketSupport packet = new SupportClass.PacketSupport(SupportClass.ToByteArray(out_Renamed.data), out_Renamed.off, new IPEndPoint(group, DNSConstants.MDNS_PORT));
try
{
DNSIncoming msg = new DNSIncoming(packet);
logger.Debug("send() JmDNS out:" + msg.Print(true));
}
catch (IOException e)
{
logger.Error("send(DNSOutgoing) - JmDNS can not parse what it sends!!!", e);
}
await SupportClass.UdpClientSupport.Send(socket, packet);
}
}
/// <summary> Adds this as an answer to the provided outgoing datagram.</summary> internal abstract DNSOutgoing AddAnswer(mDNS dns, DNSIncoming in_Renamed, IPAddress addr, int port, DNSOutgoing out_Renamed);
public void Run(object state)
{
DNSOutgoing out_Renamed = null;
try
{
// send probes for JmDNS itself
if (Enclosing_Instance.State == taskState)
{
if (out_Renamed == null)
{
out_Renamed = new DNSOutgoing(DNSConstants.FLAGS_QR_RESPONSE | DNSConstants.FLAGS_AA);
}
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.AdvanceState();
}
// send announces for services
// Defensively copy the services into a local list,
// to prevent race conditions with methods registerService
// and unregisterService.
IList list;
lock (Enclosing_Instance)
{
list = new ArrayList(Enclosing_Instance.services.Values);
}
foreach (ServiceInfo info in list)
{
lock (info)
{
if (info.State == taskState && info.task == this)
{
info.AdvanceState();
logger.Debug("run() JmDNS announced " + info.QualifiedName + " state " + info.State);
if (out_Renamed == null)
{
out_Renamed = new DNSOutgoing(DNSConstants.FLAGS_QR_RESPONSE | DNSConstants.FLAGS_AA);
}
out_Renamed.AddAnswer(new Pointer(info.type, DNSConstants.TYPE_PTR, DNSConstants.CLASS_IN, DNSConstants.DNS_TTL, info.QualifiedName), 0);
out_Renamed.AddAnswer(new Service(info.QualifiedName, DNSConstants.TYPE_SRV, DNSConstants.CLASS_IN, DNSConstants.DNS_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, DNSConstants.DNS_TTL, info.text), 0);
}
}
}
if (out_Renamed != null)
{
logger.Debug("run() JmDNS announced");
Enclosing_Instance.Send(out_Renamed);
}
else
{
// If we have nothing to send, another timer taskState ahead
// of us has done the job for us. We can cancel.
cancel();
}
}
catch (Exception e)
{
logger.Warn("run() exception ", e);
Enclosing_Instance.Recover();
}
taskState = taskState.Advance();
if (!taskState.Announced)
{
cancel();
}
}
internal override DNSOutgoing AddAnswer(mDNS dns, DNSIncoming in_Renamed, IPAddress addr, int port, DNSOutgoing out_Renamed)
{
return(out_Renamed);
}
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();
}
}
internal override DNSOutgoing AddAnswer(mDNS dns, DNSIncoming in_Renamed, IPAddress addr, int port, DNSOutgoing out_Renamed)
{
ServiceInfo info = (ServiceInfo)dns.services[name.ToLower()];
if (info != null)
{
if (this.port == info.port != server.Equals(dns.LocalHost.Name))
{
return(dns.AddAnswer(in_Renamed, addr, port, out_Renamed, new Service(info.QualifiedName, DNSConstants.TYPE_SRV, DNSConstants.CLASS_IN | DNSConstants.CLASS_UNIQUE, DNSConstants.DNS_TTL, info.priority, info.weight, info.port, dns.LocalHost.Name)));
}
}
return(out_Renamed);
}
/// <summary> Adds this as an answer to the provided outgoing datagram.</summary> internal abstract DNSOutgoing AddAnswer(mDNS dns, DNSIncoming in_Renamed, IPAddress addr, int port, DNSOutgoing out_Renamed);
public void Run(object state)
{
lock (Enclosing_Instance.IOLock)
{
if (Enclosing_Instance.PlannedAnswer == in_Renamed)
{
Enclosing_Instance.PlannedAnswer = null;
}
// We use these sets to prevent duplicate records
// FIXME - This should be moved into DNSOutgoing
// TODO: check these for compatibility
SupportClass.HashSetSupport questions = new SupportClass.HashSetSupport();
SupportClass.HashSetSupport answers = new SupportClass.HashSetSupport();
if (Enclosing_Instance.State == DNSState.ANNOUNCED)
{
try
{
long now = (DateTime.Now.Ticks - 621355968000000000) / 10000;
long expirationTime = now + 1; //=now+DNSConstants.KNOWN_ANSWER_TTL;
bool isUnicast = (port != DNSConstants.MDNS_PORT);
// Answer questions
foreach (DNSEntry entry in in_Renamed.questions)
{
if (entry is DNSQuestion)
{
DNSQuestion q = (DNSQuestion)entry;
// for unicast responses the question must be included
if (isUnicast)
{
//out.addQuestion(q);
questions.Add(q);
}
int type = q.type;
if (type == DNSConstants.TYPE_ANY || type == DNSConstants.TYPE_SRV)
{
// I ama not sure of why there is a special case here [PJYF Oct 15 2004]
if (Enclosing_Instance.localHost.Name.ToUpper().Equals(q.Name.ToUpper()))
{
// type = DNSConstants.TYPE_A;
DNSRecord answer = Enclosing_Instance.localHost.DNS4AddressRecord;
if (answer != null)
{
answers.Add(answer);
}
answer = Enclosing_Instance.localHost.DNS6AddressRecord;
if (answer != null)
{
answers.Add(answer);
}
type = DNSConstants.TYPE_IGNORE;
}
else if (Enclosing_Instance.serviceTypes.Contains(q.Name.ToLower()))
{
type = DNSConstants.TYPE_PTR;
}
}
switch (type)
{
case DNSConstants.TYPE_A:
{
// Answer a query for a domain name
//out = addAnswer( in, addr, port, out, host );
DNSRecord answer = Enclosing_Instance.localHost.DNS4AddressRecord;
if (answer != null)
{
answers.Add(answer);
}
break;
}
case DNSConstants.TYPE_AAAA:
{
// Answer a query for a domain name
DNSRecord answer = Enclosing_Instance.localHost.DNS6AddressRecord;
if (answer != null)
{
answers.Add(answer);
}
break;
}
case DNSConstants.TYPE_PTR:
{
// Answer a query for services of a given type
// find matching services
foreach (ServiceInfo info in Enclosing_Instance.services.Values)
{
if (info.State == DNSState.ANNOUNCED)
{
if (q.name.ToUpper().Equals(info.type.ToUpper()))
{
DNSRecord answer = Enclosing_Instance.localHost.DNS4AddressRecord;
if (answer != null)
{
answers.Add(answer);
}
answer = Enclosing_Instance.localHost.DNS6AddressRecord;
if (answer != null)
{
answers.Add(answer);
}
answers.Add(new Pointer(info.type, DNSConstants.TYPE_PTR, DNSConstants.CLASS_IN, DNSConstants.DNS_TTL, info.QualifiedName));
answers.Add(new Service(info.QualifiedName, DNSConstants.TYPE_SRV, DNSConstants.CLASS_IN | DNSConstants.CLASS_UNIQUE, DNSConstants.DNS_TTL, info.priority, info.weight, info.port, Enclosing_Instance.localHost.Name));
answers.Add(new Text(info.QualifiedName, DNSConstants.TYPE_TXT, DNSConstants.CLASS_IN | DNSConstants.CLASS_UNIQUE, DNSConstants.DNS_TTL, info.text));
}
}
}
if (q.name.ToUpper().Equals("_services._mdns._udp.local.".ToUpper()))
{
foreach (String s in Enclosing_Instance.serviceTypes.Values)
{
answers.Add(new Pointer("_services._mdns._udp.local.", DNSConstants.TYPE_PTR, DNSConstants.CLASS_IN, DNSConstants.DNS_TTL, s));
}
}
break;
}
case DNSConstants.TYPE_SRV:
case DNSConstants.TYPE_ANY:
case DNSConstants.TYPE_TXT:
{
ServiceInfo info = (ServiceInfo)Enclosing_Instance.services[q.name.ToLower()];
if (info != null && info.State == DNSState.ANNOUNCED)
{
DNSRecord answer = Enclosing_Instance.localHost.DNS4AddressRecord;
if (answer != null)
{
answers.Add(answer);
}
answer = Enclosing_Instance.localHost.DNS6AddressRecord;
if (answer != null)
{
answers.Add(answer);
}
answers.Add(new Pointer(info.type, DNSConstants.TYPE_PTR, DNSConstants.CLASS_IN, DNSConstants.DNS_TTL, info.QualifiedName));
answers.Add(new Service(info.QualifiedName, DNSConstants.TYPE_SRV, DNSConstants.CLASS_IN | DNSConstants.CLASS_UNIQUE, DNSConstants.DNS_TTL, info.priority, info.weight, info.port, Enclosing_Instance.localHost.Name));
answers.Add(new Text(info.QualifiedName, DNSConstants.TYPE_TXT, DNSConstants.CLASS_IN | DNSConstants.CLASS_UNIQUE, DNSConstants.DNS_TTL, info.text));
}
break;
}
default:
{
//Console.WriteLine("JmDNSResponder.unhandled query:"+q);
break;
}
}
}
}
// remove known answers, if the ttl is at least half of
// the correct value. (See Draft Cheshire chapter 7.1.).
foreach (DNSRecord knownAnswer in in_Renamed.answers)
{
bool tempBoolean;
tempBoolean = answers.Contains(knownAnswer);
answers.Remove(knownAnswer);
if (knownAnswer.ttl > DNSConstants.DNS_TTL / 2 && tempBoolean)
{
logger.Debug("JmDNS Responder Known Answer Removed");
}
}
// responde if we have answers
if (answers.Count != 0)
{
logger.Debug("run() JmDNS responding");
DNSOutgoing out_Renamed = null;
if (isUnicast)
{
out_Renamed = new DNSOutgoing(DNSConstants.FLAGS_QR_RESPONSE | DNSConstants.FLAGS_AA, false);
}
foreach (DNSQuestion question in questions)
{
out_Renamed.AddQuestion(question);
}
foreach (DNSRecord answer in answers)
{
out_Renamed = Enclosing_Instance.AddAnswer(in_Renamed, addr, port, out_Renamed, answer);
}
Enclosing_Instance.Send(out_Renamed);
}
// TODO: do we need this?
//cancel();
}
catch (Exception e)
{
logger.Warn("run() exception ", e);
Enclosing_Instance.Close();
}
}
}
}
public void Run(object state)
{
lock (Enclosing_Instance.IOLock)
{
if (Enclosing_Instance.PlannedAnswer == in_Renamed)
{
Enclosing_Instance.PlannedAnswer = null;
}
// We use these sets to prevent duplicate records
// FIXME - This should be moved into DNSOutgoing
// TODO: check these for compatibility
SupportClass.HashSetSupport questions = new SupportClass.HashSetSupport();
SupportClass.HashSetSupport answers = new SupportClass.HashSetSupport();
if (Enclosing_Instance.State == DNSState.ANNOUNCED)
{
try
{
long now = (DateTime.Now.Ticks - 621355968000000000) / 10000;
long expirationTime = now + 1; //=now+DNSConstants.KNOWN_ANSWER_TTL;
bool isUnicast = (port != DNSConstants.MDNS_PORT);
// Answer questions
foreach (DNSEntry entry in in_Renamed.questions)
{
if (entry is DNSQuestion)
{
DNSQuestion q = (DNSQuestion) entry;
// for unicast responses the question must be included
if (isUnicast)
{
//out.addQuestion(q);
questions.Add(q);
}
int type = q.type;
if (type == DNSConstants.TYPE_ANY || type == DNSConstants.TYPE_SRV)
{
// I ama not sure of why there is a special case here [PJYF Oct 15 2004]
if (Enclosing_Instance.localHost.Name.ToUpper().Equals(q.Name.ToUpper()))
{
// type = DNSConstants.TYPE_A;
DNSRecord answer = Enclosing_Instance.localHost.DNS4AddressRecord;
if (answer != null)
answers.Add(answer);
answer = Enclosing_Instance.localHost.DNS6AddressRecord;
if (answer != null)
answers.Add(answer);
type = DNSConstants.TYPE_IGNORE;
}
else if (Enclosing_Instance.serviceTypes.Contains(q.Name.ToLower()))
{
type = DNSConstants.TYPE_PTR;
}
}
switch (type)
{
case DNSConstants.TYPE_A:
{
// Answer a query for a domain name
//out = addAnswer( in, addr, port, out, host );
DNSRecord answer = Enclosing_Instance.localHost.DNS4AddressRecord;
if (answer != null)
answers.Add(answer);
break;
}
case DNSConstants.TYPE_AAAA:
{
// Answer a query for a domain name
DNSRecord answer = Enclosing_Instance.localHost.DNS6AddressRecord;
if (answer != null)
answers.Add(answer);
break;
}
case DNSConstants.TYPE_PTR:
{
// Answer a query for services of a given type
// find matching services
foreach (ServiceInfo info in Enclosing_Instance.services.Values)
{
if (info.State == DNSState.ANNOUNCED)
{
if (q.name.ToUpper().Equals(info.type.ToUpper()))
{
DNSRecord answer = Enclosing_Instance.localHost.DNS4AddressRecord;
if (answer != null)
answers.Add(answer);
answer = Enclosing_Instance.localHost.DNS6AddressRecord;
if (answer != null)
answers.Add(answer);
answers.Add(new Pointer(info.type, DNSConstants.TYPE_PTR, DNSConstants.CLASS_IN, DNSConstants.DNS_TTL, info.QualifiedName));
answers.Add(new Service(info.QualifiedName, DNSConstants.TYPE_SRV, DNSConstants.CLASS_IN | DNSConstants.CLASS_UNIQUE, DNSConstants.DNS_TTL, info.priority, info.weight, info.port, Enclosing_Instance.localHost.Name));
answers.Add(new Text(info.QualifiedName, DNSConstants.TYPE_TXT, DNSConstants.CLASS_IN | DNSConstants.CLASS_UNIQUE, DNSConstants.DNS_TTL, info.text));
}
}
}
if (q.name.ToUpper().Equals("_services._mdns._udp.local.".ToUpper()))
{
foreach (String s in Enclosing_Instance.serviceTypes.Values)
{
answers.Add(new Pointer("_services._mdns._udp.local.", DNSConstants.TYPE_PTR, DNSConstants.CLASS_IN, DNSConstants.DNS_TTL, s));
}
}
break;
}
case DNSConstants.TYPE_SRV:
case DNSConstants.TYPE_ANY:
case DNSConstants.TYPE_TXT:
{
ServiceInfo info = (ServiceInfo) Enclosing_Instance.services[q.name.ToLower()];
if (info != null && info.State == DNSState.ANNOUNCED)
{
DNSRecord answer = Enclosing_Instance.localHost.DNS4AddressRecord;
if (answer != null)
answers.Add(answer);
answer = Enclosing_Instance.localHost.DNS6AddressRecord;
if (answer != null)
answers.Add(answer);
answers.Add(new Pointer(info.type, DNSConstants.TYPE_PTR, DNSConstants.CLASS_IN, DNSConstants.DNS_TTL, info.QualifiedName));
answers.Add(new Service(info.QualifiedName, DNSConstants.TYPE_SRV, DNSConstants.CLASS_IN | DNSConstants.CLASS_UNIQUE, DNSConstants.DNS_TTL, info.priority, info.weight, info.port, Enclosing_Instance.localHost.Name));
answers.Add(new Text(info.QualifiedName, DNSConstants.TYPE_TXT, DNSConstants.CLASS_IN | DNSConstants.CLASS_UNIQUE, DNSConstants.DNS_TTL, info.text));
}
break;
}
default:
{
//Console.WriteLine("JmDNSResponder.unhandled query:"+q);
break;
}
}
}
}
// remove known answers, if the ttl is at least half of
// the correct value. (See Draft Cheshire chapter 7.1.).
foreach (DNSRecord knownAnswer in in_Renamed.answers)
{
bool tempBoolean;
tempBoolean = answers.Contains(knownAnswer);
answers.Remove(knownAnswer);
if (knownAnswer.ttl > DNSConstants.DNS_TTL / 2 && tempBoolean)
{
logger.Debug("JmDNS Responder Known Answer Removed");
}
}
// responde if we have answers
if (answers.Count != 0)
{
logger.Debug("run() JmDNS responding");
DNSOutgoing out_Renamed = null;
if (isUnicast)
{
out_Renamed = new DNSOutgoing(DNSConstants.FLAGS_QR_RESPONSE | DNSConstants.FLAGS_AA, false);
}
foreach (DNSQuestion question in questions)
{
out_Renamed.AddQuestion(question);
}
foreach (DNSRecord answer in answers)
{
out_Renamed = Enclosing_Instance.AddAnswer(in_Renamed, addr, port, out_Renamed, answer);
}
Enclosing_Instance.Send(out_Renamed);
}
// TODO: do we need this?
//cancel();
}
catch (Exception e)
{
logger.Warn("run() exception ", e);
Enclosing_Instance.Close();
}
}
}
}
