[SNMP4J] Problem with SNMP4j

[MILLIGAN, Kristoffer]

Hello list,

snmp4j is for the most part working as expected .. I am however having a problem with a method of mine.

The method will leave a DefaultUdpTransportMapping listerner running, and it will leave a Timer running. These never seem to die. What am I doing wrong, and how can I kill of these listeners?

public ArrayList<String> getValues(String oid) throws IOException {
        
        ArrayList<String> result = new ArrayList<String>();
        
        TransportMapping transport = new DefaultUdpTransportMapping();
        //transport.listen();

        // Create Target Address object
        CommunityTarget comtarget = new CommunityTarget();
        comtarget.setCommunity(new OctetString(Setting.getInstance().getValue("settings", "community")));
        comtarget.setVersion(SnmpConstants.version2c);
        comtarget.setAddress(new UdpAddress(Setting.getInstance().getValue("settings", "ip") + "/" + Setting.getInstance().getValue("settings", "port")));
        comtarget.setRetries(2);
        comtarget.setTimeout(5000);

        // Create the PDU object
        PDU pdu = new PDU();
        pdu.add(new VariableBinding(new OID(oid)));
        pdu.setType(PDU.GET);
        //pdu.setRequestID(new Integer32(1));

        // Create Snmp object for sending data to Agent
        Snmp snmp = new Snmp(transport);
        snmp.listen();
        ResponseEvent response;
        while(true) {
            response = snmp.getNext(pdu, comtarget);
            if (response != null) {
                PDU responsePDU = response.getResponse();
                if(!response.getResponse().get(0).getOid().startsWith(new OID(oid))) {
                    //System.out.println("Starting with the same OID - breaking!");
                    break;
                }
                if (responsePDU != null) {
                    int errorStatus = responsePDU.getErrorStatus();
                    if (errorStatus == PDU.noError){
                        result.add(responsePDU.get(0).toValueString());
                        pdu = response.getResponse();
                        System.out.println("Adding " + responsePDU.get(0).toValueString());
                    }
                    else {
                        System.out.println("Response was error: " + pdu.getErrorStatusText());
                        break;
                    }
                } else {
                    System.out.println("PDU received was null");
                    break;
                }
            } else {
                System.out.println("Response received was null");
                break;
            }
        }
        snmp.close();

        return result;
    }


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