[SNMP4J] Request for help: InterruptedException from DefaultUdpTransportMapping's ListenThread

[dhinman at rcn.com]

Hello,

 

I am using SNMP4J 1.5.1 on Windows XP.

 

I see periodic InterruptedException messages from the ListenerThread created by DefaultUdpTransportMapping. Here is the stack trace I get:

Exception in thread "Thread-25" java.lang.InterruptedException

            at java.net.PlainDatagramSocketImpl.receive0(Native Method)

            at java.net.PlainDatagramSocketImpl.receive(PlainDatagramSocketImpl.java:136)

            at java.net.DatagramSocket.receive(DatagramSocket.java:712)

            at org.snmp4j.transport.DefaultUdpTransportMapping$ListenThread.run(DefaultUdpTransportMapping.java:229)

 

Are these exceptions problematic (and if so, can I change my code to prevent the problem situation), or are they expected (and if so, can I somehow handle and ignore them)?

 

I have attached my code. Thanks very much for your help!

 

            public FilerSample sampleFiler() throws IOException, SamplerDoneException {

                        transport = new DefaultUdpTransportMapping();

                        Address targetAddress = GenericAddress.parse("udp:" + filer + "/161");

                        long cpuUpTime = 0;

                        long cpuBusyTime = 0;

                        long cpuIdleTime = 0;

                        

                        try {

                                    snmp = new Snmp(transport);

                                    USM usm =

                                                new USM(SecurityProtocols.getInstance(),

                                                            new OctetString(MPv3.createLocalEngineID()),

                                                            0);

                                    SecurityModels.getInstance().addSecurityModel(usm);

                                    transport.listen();

 

                                    // Here we set up the target

                                    CommunityTarget target = new CommunityTarget();

 

                                    target.setCommunity(new OctetString("public"));

                                    target.setAddress(targetAddress);

                                    target.setRetries(5);

                                    target.setTimeout(5000);

 

                                    // create the PDU

                                    PDU pdu = new PDU();

 

                                    pdu.add(new VariableBinding(CPU_UP_TIME_OID));  

                                    pdu.add(new VariableBinding(CPU_BUSY_TIME_OID)); 

                                    pdu.add(new VariableBinding(CPU_IDLE_TIME_OID)); 

                                    pdu.setType(PDU.GET);

 

                                    // send the PDU

                                    ResponseEvent response = snmp.send(pdu, target);

 

                                    // extract the response PDU (could be null if timed out)

                                    PDU responsePDU = response.getResponse();

 

                                    // … processing of the data from the PDU

                        }

                        finally {

                                    // transport.close() and then snmp.close() in appropriate try/catch blocks

                        }

Dave Hinman

Dave.Hinman at mathworks.com

(508)647-4405