Hi, I have another question about this issue.
When cancelling a request (either when closing or on an asynchronous request, at the end of onResponse(ResponseEvent event) ) the PDU might be null if the request timed out. I've read in the javadoc of Snmp that an asynchronous request must always be cancelled otherwise a memory leak is created. How can you cancel the request when the pdu is null ? Or maybe you don't need to cancel it if the pdu is null ? thanks, Pierre Rust ________________________________________ De : [email protected] [[email protected]] de la part de Frank Fock [[email protected]] Date d'envoi : vendredi 11 octobre 2013 12:49 À : [email protected] Objet : Re: [SNMP4J] NPE in pduHandleAssigned Hi Pierre, You can avoid this exception if you cancel all pending requests before you close the Snmp session. I agree, that the Snmp.close() should do this for you. I will provide a fix for it in version 2.2.3. Best regards, Frank Am 11.10.2013 10:45, schrieb [email protected]: > Hi, > > I'm using SNMP4J and I'm sometime getting an NPE in pduHandleAssigned : > > java.lang.NullPointerException > at org.snmp4j.Snmp$PendingRequest.pduHandleAssigned(Snmp.java:1624) > at org.snmp4j.Snmp$PendingRequest.pduHandleAssigned(Snmp.java:1485) > at org.snmp4j.MessageDispatcherImpl.sendPdu(MessageDispatcherImpl.java:495) > at org.snmp4j.Snmp.sendMessage(Snmp.java:1005) > at org.snmp4j.Snmp$PendingRequest.run(Snmp.java:1666) > at java.util.Timer$TimerImpl.run(Timer.java:284) > > Given that the line 1624 is : "timer.schedule(this, delay);" , I assume the > timer is null. > > It might be that this happens when closing SNMP4J with an ongoing > PendingRequest (in close(), line 509, timer is set to null) but I'm > unfortunately not able to confirm this assumption : the problem only happens > "on the field" and I never reproduce it in debug. > > In can upgrade to 2.2.2, but I don't see any relevant difference in the > (potentially offending) code. > > Do you have any idea of what I could do investigate this issue ? > > > thanks a lot for the good work, > > Pierre Rust > > > > > _________________________________________________________________________________________________________________________ > > Ce message et ses pieces jointes peuvent contenir des informations > confidentielles ou privilegiees et ne doivent donc > pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu > ce message par erreur, veuillez le signaler > a l'expediteur et le detruire ainsi que les pieces jointes. Les messages > electroniques etant susceptibles d'alteration, > Orange decline toute responsabilite si ce message a ete altere, deforme ou > falsifie. Merci. > > This message and its attachments may contain confidential or privileged > information that may be protected by law; > they should not be distributed, used or copied without authorisation. > If you have received this email in error, please notify the sender and delete > this message and its attachments. > As emails may be altered, Orange is not liable for messages that have been > modified, changed or falsified. > Thank you. > > _______________________________________________ > SNMP4J mailing list > [email protected] > http://lists.agentpp.org/mailman/listinfo/snmp4j -- --- AGENT++ Maximilian-Kolbe-Str. 10 73257 Koengen, Germany https://agentpp.com Phone: +49 7024 8688230 Fax: +49 7024 8688231 _______________________________________________ SNMP4J mailing list [email protected] http://lists.agentpp.org/mailman/listinfo/snmp4j _________________________________________________________________________________________________________________________ Ce message et ses pieces jointes peuvent contenir des informations confidentielles ou privilegiees et ne doivent donc pas etre diffuses, exploites ou copies sans autorisation. Si vous avez recu ce message par erreur, veuillez le signaler a l'expediteur et le detruire ainsi que les pieces jointes. Les messages electroniques etant susceptibles d'alteration, Orange decline toute responsabilite si ce message a ete altere, deforme ou falsifie. Merci. This message and its attachments may contain confidential or privileged information that may be protected by law; they should not be distributed, used or copied without authorisation. If you have received this email in error, please notify the sender and delete this message and its attachments. As emails may be altered, Orange is not liable for messages that have been modified, changed or falsified. Thank you. _______________________________________________ SNMP4J mailing list [email protected] http://lists.agentpp.org/mailman/listinfo/snmp4j
