[SNMP4J] Response is null, Why?

[Frank Fock]

Hi Shuji,

Snmp.listen() is missing.

Best regards,
Frank

Shuji Urano wrote:
> Hi there:
> 
> I am new in SNMP4j.
> 
> Now I want to get a information via SNMP4j as follows.
> 
>   try
>   {
>    Snmp snmp = new Snmp("public");
>    Address targetAddress = GenericAddress.parse("udp:192.168.100.5/161");
>    CommunityTarget target = new CommunityTarget(targetAddress, new 
> OctetString("public"));
> 
>    target.setVersion(SnmpConstants.version2c);
>    target.setRetries(2);
>    target.setTimeout(1500);
> 
>    PDU pdu = new PDU();
> 
>    pdu.add(new VariableBinding(new OID("1.3.6.1.2.1.2.2.1.10")));
>    pdu.setType(PDU.GET);
> 
>    ResponseEvent responseEvent = snmp.get(pdu, target);
>    if (responseEvent.getResponse() == null)                           // I 
> need a information, but it returns null
>     System.err.println("TIME OUT");
> 
>    // extract the response PDU (could be null if timed out)
>    PDU responsePDU = responseEvent.getResponse();
>   }
>   catch (Exception ex)
>   {
>    System.err.println(ex.getMessage());
>   }
> 
> Please show me where is wrong.
> 
> Shuji 
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