org.snmp4j.smi.UdpAddress Java Examples

/**
 * Method to create community target
 * @param community community name
 * @param address address
 * @param version SNMP version
 * @return community target
 */
protected static CommunityTarget createCommTarget(String community, String address, int version) {
    CommunityTarget target = new CommunityTarget();
    target.setVersion(version);
    target.setCommunity(new OctetString(community));
    target.setAddress(new UdpAddress(address));
    target.setRetries(0);
    target.setTimeout(500);
    return target;
}
 

/**
 * Method to create a user target
 * @param address address
 * @param securityLevel security level
 * @param securityName security name
 * @return user target
 */
private static UserTarget createUserTarget(String address, int securityLevel, String securityName) {
    UserTarget target = new UserTarget();
    target.setVersion(SnmpConstants.version3);
    target.setSecurityLevel(securityLevel);
    target.setSecurityName(new OctetString(securityName));
    target.setAddress(new UdpAddress(address));
    target.setRetries(0);
    target.setTimeout(500);
    return target;
}
 

/** Send a Msg to Channel */
@Override
public synchronized boolean sendMessage(Msg msg, String remoteHost, int remotePort, String transport) throws Exception
{
    ((MsgSnmp) msg).getTarget().setAddress(new UdpAddress(remoteHost + "/" + remotePort));

    //asynchronous way, response processing is delayed to processResponse
    snmp.send(((MsgSnmp) msg).getPdu(), ((MsgSnmp) msg).getTarget(), null, processMessage);
    return true;
}
 

public static void sendTrapV2(String port) throws IOException {
    PDU trap = new PDU();
    trap.setType(PDU.TRAP);

    OID oid = new OID("1.2.3.4.5");
    trap.add(new VariableBinding(SnmpConstants.snmpTrapOID, oid));
    trap.add(new VariableBinding(SnmpConstants.sysUpTime, new TimeTicks(5000)));
    trap.add(new VariableBinding(SnmpConstants.sysDescr, new OctetString("System Description")));

    // Add Payload
    Variable var = new OctetString("some string");
    trap.add(new VariableBinding(oid, var));

    // Specify receiver
    Address targetaddress = new UdpAddress("127.0.0.1/" + port);
    CommunityTarget target = new CommunityTarget();
    target.setCommunity(new OctetString("public"));
    target.setVersion(SnmpConstants.version2c);
    target.setAddress(targetaddress);

    // Send
    Snmp snmp = new Snmp(new DefaultUdpTransportMapping());
    snmp.send(trap, target, null, null);

    snmp.close();
}
 

/**
 * Method to create community target
 * @param community community name
 * @param address address
 * @param version SNMP version
 * @return community target
 */
protected static CommunityTarget createCommTarget(String community, String address, int version) {
    CommunityTarget target = new CommunityTarget();
    target.setVersion(version);
    target.setCommunity(new OctetString(community));
    target.setAddress(new UdpAddress(address));
    target.setRetries(0);
    target.setTimeout(500);
    return target;
}
 

/**
 * Method to create a user target
 * @param address address
 * @param securityLevel security level
 * @param securityName security name
 * @return user target
 */
private static UserTarget createUserTarget(String address, int securityLevel, String securityName) {
    UserTarget target = new UserTarget();
    target.setVersion(SnmpConstants.version3);
    target.setSecurityLevel(securityLevel);
    target.setSecurityName(new OctetString(securityName));
    target.setAddress(new UdpAddress(address));
    target.setRetries(0);
    target.setTimeout(500);
    return target;
}
 

public SnmpHelper(String address, String community) {
    _target = new CommunityTarget();
    _target.setCommunity(new OctetString(community));
    _target.setVersion(SnmpConstants.version2c);
    _target.setAddress(new UdpAddress(address));
    try {
        _snmp = new Snmp(new DefaultUdpTransportMapping());
    } catch (IOException e) {
        _snmp = null;
        throw new CloudRuntimeException(" Error in crearting snmp object, " + e.getMessage());
    }
}
 

@Override
public boolean create(String protocol) throws Exception
{
    processMessage = new ProcessMessage(this);
    snmp = new Snmp(new DefaultUdpTransportMapping(new UdpAddress(getHost() + "/" + getPort())));
    snmp.addCommandResponder(processMessage);

    // TEST CODE : initialize for receiving SNMPV3
    {
        String authPassword = stack.getConfig().getString("protocol.authPassword");
        String encryptPassword = stack.getConfig().getString("protocol.encryptPassword");

        snmp.getMessageDispatcher().removeMessageProcessingModel(new MPv3());
        snmp.getMessageDispatcher().addMessageProcessingModel(new MPv3(MPv3.createLocalEngineID(new OctetString(this.getUID()))));

        USM usm = new USM(SecurityProtocols.getInstance(), new OctetString(this.getUID().getBytes()), 0);
        SecurityModels.getInstance().addSecurityModel(usm);

        // need to get a list of users and their params from config
        snmp.getUSM().addUser(new OctetString("MD5DES"),
                new UsmUser(new OctetString("MD5DES"),
                            AuthMD5.ID, new OctetString("protocol.authPassword"),
                            PrivDES.ID, new OctetString("protocol.encryptPassword")));
    }

    snmp.listen();

    return true;
}
 

public void onResponse(ResponseEvent re) {
       // Always cancel async request when response has been received
       // otherwise a memory leak is created! Not canceling a request
       // immediately can be useful when sending a request to a broadcast
       // address.
       try {
            Object source = re.getSource();

           // test to ignore REPORTS from DISCOVERY messages in SNMPv3
           if (!(source instanceof Snmp)) return;

           ((Snmp) source).cancel(re.getRequest(), this);

           //create the SnmpMsg received
           MsgSnmp msg = new MsgSnmp(listenpoint.getStack());
           msg.setPdu(re.getResponse());
           
           //TODO: how to know the version here to set communityTarget or UserTarget
           Target target = new CommunityTarget();
//           ((CommunityTarget)target).setCommunity(new OctetString(re.getStateReference().getSecurityName()));
           target.setAddress(re.getPeerAddress());
           msg.setTarget((AbstractTarget)target);
           UdpAddress add = (UdpAddress) re.getPeerAddress();
           msg.setRemotePort(add.getPort());
           msg.setRemoteHost(add.getInetAddress().getHostAddress());
           msg.setListenpoint(listenpoint);

           StackFactory.getStack(StackFactory.PROTOCOL_SNMP).receiveMessage(msg);
       } catch (Exception ex) {
       }
    }
 

public static void sendTrapV1(String port) throws IOException {

        TransportMapping<?> transport = new DefaultUdpTransportMapping();
        transport.listen();

        CommunityTarget comtarget = new CommunityTarget();
        comtarget.setCommunity(new OctetString(new OctetString("public")));
        comtarget.setVersion(SnmpConstants.version1);
        comtarget.setAddress(new UdpAddress("127.0.0.1/" + port));
        comtarget.setRetries(2);
        comtarget.setTimeout(5000);

        PDU trap = new PDUv1();
        trap.setType(PDU.V1TRAP);

        OID oid = new OID("1.2.3.4.5");
        trap.add(new VariableBinding(SnmpConstants.snmpTrapOID, oid));
        trap.add(new VariableBinding(SnmpConstants.sysUpTime, new TimeTicks(5000)));
        trap.add(new VariableBinding(SnmpConstants.sysDescr, new OctetString("System Description")));

        // Add Payload
        Variable var = new OctetString("some string");
        trap.add(new VariableBinding(oid, var));

        // Send
        Snmp snmp = new Snmp(transport);
        snmp.send(trap, comtarget);
        transport.close();
        snmp.close();

    }