[SNMP4J] SNMP4J multiple threads

[Francis LIMOUSY]

Hello,

I'm using snmp4j in a threaded application, fetching synchronously data.
I have this problem: threads don't seem to be de-allocated.
I have plenty of UdpDefaultTransportMapping stacking into memory until 
the application crash (out of system resources).

My question is: is this a Thread issue or a snmp4j issue ?

My code is quite simple for the moment, the created threads run the 
following code:

        try{
            TransportMapping transport = new DefaultUdpTransportMapping();
            Snmp snmp = new Snmp(transport);
           
            PDU pdu = new PDU();

            for(String oid : oids){
                pdu.add(new VariableBinding(new OID(oid)));
            }

            pdu.setType(PDU.GETNEXT);           
           
            CommunityTarget target = new CommunityTarget();
            target.setCommunity(new OctetString(community));
           
            target.setAddress(targetAddress);
           
            target.setVersion(Integer.parseInt(version));
          
            transport.listen();
           
            ResponseEvent response = snmp.send(pdu, target);           
           
            if (response.getResponse() == null) {
                System.out.println("Timeout");
            }
            else {         
               //handle response
               (...)
            }
          }



I guess the problem occur here :
ResponseEvent response = snmp.send(pdu, target);

which is synchronous if I get the examples well.
So I guess some of my threads are blocking here, aren't they ?
If so, how can I specify a timeout ? Is there another way of doing this ?

Thanks for any help on this problem.

I'm using SNMP protocol v1, Java 1.5 on a windows environment