///LA TODO Protection ?? What if several subscribers at the same time
/// Not needed since all calls go through the participant which is synched
public ISendDataHandler GetSendDataHandler(Topic t, Participant participant)
{
// In the case that we use the same port for several topics, we need to find the sender for the transport::address::port used
string key = t.GetTransport() + "::" + t.GetDomainAddress() + "::" + t.GetPort();
if (SendDataHandlers.ContainsKey(key))
{
return SendDataHandlers[key];
}
try
{
// Get the local interface, doing a translation from subnet if necessary
string localIF = Domain.DoSubnetTranslation(participant.getDomain().GetLocalInterface());
ISendDataHandler sender = null;
if (t.GetTransport().Equals(Topic.TRANSPORT_MC))
{
sender = new McSendDataHandler(t, localIF);
}
else if (t.GetTransport().Equals(Topic.TRANSPORT_TCP))
{
sender = new TcpSendDataHandler(t, localIF);
}
if (sender != null)
{
SendDataHandlers.Add(key, sender);
return sender;
}
// We don't want to add the udp handler to the handler list, so handle this last
if (t.GetTransport().Equals(Topic.TRANSPORT_UDP))
{
if (udpSendDataHandler == null)
{
// We have only one sender for all topics, so use the domain value for buffer size
udpSendDataHandler = new McUdpSendDataHandler(
participant.getDomain().GetOutSocketBufferSize(),
localIF);
// Setup a listener on the participant info data published by participants on our domain.
// We use the information for topics with UDP as transport, to know the destination for UDP sends
// ie. we extract ip and port from the information and add it to our McUdpSendDataHandler
partInfoListener = new ParticipantInfoDataListener(participant, udpSendDataHandler);
partInfoSub = new Subscriber(participant.CreateParticipantInfoTopic());
partInfoSub.newDataDefault += new NewDataDefaultEventHandler(partInfoListener.SubscriberNewData);
partInfoSub.Start();
}
return udpSendDataHandler;
}
throw new CommException("No such Transport " + t.GetTransport());
}
catch (System.IO.IOException ex)
{
throw new CommException("Error creating SendDataHandler. IOException -->" + ex.Message);
}
}
public Publisher(Topic topic)
{
this.topic = topic;
this.bytes = new byte[topic.GetSampleMaxSize()];
this.participant = Participant.GetInstance(topic.GetDomainID(), topic.GetParticipantID());
this.inProcessTransport = participant.GetInProcessTransport();
Init();
}
public ReceiveDataHandler(Topic t, Participant part, IReceiver receiver)
{
topic = t;
bytes = new byte[t.GetSampleMaxSize()];
headerBytes = new byte[FRAGMENT_HEADER_SIZE];
participant = part;
fragmentSize = Globals.MAX_SEGMENT_SIZE;
this.receiver = receiver;
}
public Subscriber(Topic t)
{
if (t == null)
{
throw new OPSInvalidTopicException("Not possible to create Subscriber with null Topic!");
}
this.topic = t;
this.participant = Participant.GetInstance(topic.GetDomainID(), topic.GetParticipantID());
deadlineNotifier = DeadlineNotifier.GetInstance();
inProcessTransport = participant.GetInProcessTransport();
}
/// Protection is not needed since all calls go through the participant which is synched
public ReceiveDataHandler GetReceiveDataHandler(Topic top, Participant participant)
{
// In the case that we use the same port for several topics, we need to find the receiver for the transport::address::port used
string key = MakeKey(top);
if (ReceiveDataHandlers.ContainsKey(key))
{
ReceiveDataHandler rdh = ReceiveDataHandlers[key];
// Check if any of the topics have a sample size larger than MAX_SEGMENT_SIZE
// This will lead to a problem when using the same port, if samples becomes > MAX_SEGMENT_SIZE
if ((rdh.GetSampleMaxSize() > Globals.MAX_SEGMENT_SIZE) || (top.GetSampleMaxSize() > Globals.MAX_SEGMENT_SIZE))
{
if (top.GetTransport().Equals(Topic.TRANSPORT_UDP))
{
Logger.ExceptionLogger.LogMessage("Warning: UDP transport is used with Topics with 'sampleMaxSize' > " + Globals.MAX_SEGMENT_SIZE);
}
else
{
Logger.ExceptionLogger.LogMessage("Warning: Same port (" + top.GetPort() + ") is used with Topics with 'sampleMaxSize' > " + Globals.MAX_SEGMENT_SIZE);
}
}
return rdh;
}
// Get the local interface, doing a translation from subnet if necessary
string localIF = Domain.DoSubnetTranslation(participant.getDomain().GetLocalInterface());
// Didn't exist, create one if transport is known
if ( (top.GetTransport().Equals(Topic.TRANSPORT_MC)) || (top.GetTransport().Equals(Topic.TRANSPORT_TCP)) )
{
ReceiveDataHandlers.Add(key,
new ReceiveDataHandler(top, participant, ReceiverFactory.CreateReceiver(top, localIF)));
return ReceiveDataHandlers[key];
}
else if (top.GetTransport().Equals(Topic.TRANSPORT_UDP))
{
IReceiver rec = ReceiverFactory.CreateReceiver(top, localIF);
ReceiveDataHandlers.Add(key, new ReceiveDataHandler(top, participant, rec));
participant.SetUdpTransportInfo(((UdpReceiver)rec).IP, ((UdpReceiver)rec).Port);
return ReceiveDataHandlers[key];
}
return null;
}
///
/// <param name="domain"></param>
/// <param name="participantID"></param>
internal Participant GetParticipant(Domain domain, string participantID)
{
string hashKey = domain.GetDomainID() + " " + participantID;
if (!instances.ContainsKey(hashKey))
{
Participant newInst = new Participant(domain, participantID);
Domain tDomain = newInst.getDomain();
if (tDomain != null)
{
instances.Add(hashKey, newInst);
}
else
{
return null;
}
}
return instances[hashKey];
}
/// Protection is not needed since all calls go through the participant which is synched
public void ReleaseReceiveDataHandler(Topic top, Participant participant)
{
// In the case that we use the same port for several topics, we need to find the receiver for the transport::address::port used
string key = MakeKey(top);
if (ReceiveDataHandlers.ContainsKey(key))
{
ReceiveDataHandler rdh = ReceiveDataHandlers[key];
if (rdh.GetNrOfSubscribers() == 0)
{
ReceiveDataHandlers.Remove(key);
if (rdh.GetTransport().Equals(Topic.TRANSPORT_UDP))
{
participant.SetUdpTransportInfo("", 0);
}
}
}
}
public ParticipantInfoDataListener(Participant part, McUdpSendDataHandler sendDataHandler)
{
this.participant = part;
this.udpSendDataHandler = sendDataHandler;
}
public ParticipantInfoDataListener(Participant part, McUdpSendDataHandler sendDataHandler)
{
this.participant = part;
this.udpSendDataHandler = sendDataHandler;
}
