2.6.0 will be released next week.
> Am 13.02.2018 um 18:15 schrieb Maayan, Elhanan <elhanan.maa...@sbdinc.com>: > > Thanks, do you have any timeline regarding 2.6? > > From: Frank Fock [mailto:f...@agentpp.com] > Sent: Tuesday, February 13, 2018 7:15 PM > To: Maayan, Elhanan <elhanan.maa...@sbdinc.com> > Cc: snmp4j@agentpp.org > Subject: Re: [SNMP4J] Possible concurrency bug in snmp4j ? > > *External Message, please be cautious.* > 2.5.11 might already solve the problem, that depends on your usage profile. > The work around would be to apply the 2.6.0 DefaultTcpMapping sources to your > version, if you do not like to use/wait for that version. > > > > On 13. Feb 2018, at 10:53, Maayan, Elhanan <elhanan.maa...@sbdinc.com> wrote: > > so 2.5.11 won't help? Any workaround? > > Get Outlook for Android > > From: Frank Fock <f...@agentpp.com> > Sent: Tuesday, February 13, 2018 11:51:23 AM > To: Maayan, Elhanan > Cc: snmp4j@agentpp.org > Subject: Re: [SNMP4J] Possible concurrency bug in snmp4j ? > > *External Message, please be cautious.* > > The immediate reconnection issue (TCP) to the same address and port (SFJ-164) > has been fixed in SNMP4J 2.6.0 which is available as SNAPSHOT. > > See also the mailing list archive around January 27th. > > The ticket system is available for users with support contract. > > Best regards, > Frank > > > On 12. Feb 2018, at 19:53, Maayan, Elhanan <elhanan.maa...@sbdinc.com> > > wrote: > > > > Thanks, I'll try that , I'm trying to access the bug system, but I can't > > find it.... > > > > The real issue I'm encountering which I don't know the cause is that the > > snmp4j tries to send messages, trying to connect , but simply doesn't, I > > did a thread dump and it seems to be stuck on the select method no matter > > what > > > > "DefaultTCPTransportMapping_192.168.60.80/0" #75906 daemon prio=5 os_prio=0 > > tid=0x00007f4748e75000 nid=0x79e5 runnable [0x00007f4733768000] > > java.lang.Thread.State: RUNNABLE > > at sun.nio.ch.EPollArrayWrapper.epollWait(Native Method) > > at sun.nio.ch.EPollArrayWrapper.poll(EPollArrayWrapper.java:269) > > at sun.nio.ch.EPollSelectorImpl.doSelect(EPollSelectorImpl.java:93) > > at sun.nio.ch.SelectorImpl.lockAndDoSelect(SelectorImpl.java:86) > > - locked <0x00000007042019f8> (a sun.nio.ch.Util$3) > > - locked <0x00000007042019e8> (a > > java.util.Collections$UnmodifiableSet) > > - locked <0x0000000704201a08> (a sun.nio.ch.EPollSelectorImpl) > > at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:97) > > at sun.nio.ch.SelectorImpl.select(SelectorImpl.java:101) > > at > > org.snmp4j.transport.DefaultTcpTransportMapping$ServerThread.run(DefaultTcpTransportMapping.java:786) > > at java.lang.Thread.run(Thread.java:745) > > > > there's nothing on tcpdump, using a separate snmp4j on shell on the same > > machine is able to connect to the same remote machine, > > > > but still: > > 2018-02-12 20:46:48,982 DEBUG DefaultTcpTransportMapping - Looking up > > connection for destination '192.168.56.1/162' returned: > > SocketEntry[peerAddress=192.168.56.1/162,socket=Socket[unconnected],lastUse=Mon > > Mar 09 07:06:25 IST 1970,readBufferPosition=-1] > > 2018-02-12 20:46:48,982 DEBUG DefaultTcpTransportMapping - > > {192.168.56.1/162=SocketEntry[peerAddress=192.168.56.1/162,socket=Socket[unconnected],lastUse=Mon > > Mar 09 07:06:25 IST 1970,readBufferPosition=-1]} > > 2018-02-12 20:46:48,982 DEBUG DefaultTcpTransportMapping - Socket for > > address '192.168.56.1/162' is closed, opening it... > > 2018-02-12 20:46:48,982 DEBUG DefaultTcpTransportMapping - Trying to > > connect to 192.168.56.1/162 > > > > > > I see that "trying to connect to" is invoked the wakeup, so that must means > > the .select is released, but returns no keys, can there be any reason for > > that? > > > > > > > > > > -----Original Message----- > > From: Frank Fock [mailto:f...@agentpp.com] > > Sent: Monday, February 12, 2018 8:45 PM > > To: Maayan, Elhanan <elhanan.maa...@sbdinc.com> > > Cc: snmp4j@agentpp.org > > Subject: Re: [SNMP4J] Possible concurrency bug in snmp4j ? > > > > *External Message, please be cautious.* > > > > Hi Elhanan, > > > > Please upgrade to SNMP4J 2.5.11 to fix this issue. > > > > Best regards > > Frank > > > >> Am 12.02.2018 um 18:05 schrieb Maayan, Elhanan <elhanan.maa...@sbdinc.com>: > >> > >> Hi..i'm using snm4j 2.4.3. > >> > >> Is it possible that just when snmp4j closes a connection (due to timeout, > >> or remote closing) and it's trying to addRegistration causing to throw an > >> exception, is it possible that snmp4j can no longer establish connection? > >> > >> > >> > >> Below is a small log of a sample client I'm doing , which does interval > >> every 5 seconds, furthermore it's target.setTimeout is also set to 5 > >> seconds, to emulate the bug (which actually happens upon remote close) > >> > >> You can see that subsequent attempts simply try to connect but don't' send > >> anything.. > >> > >> > >> > >> Mon Feb 12 18:10:37 IST 2018 Sending message > >> > >> Looking up connection for destination '192.168.97.21/162' returned: > >> SocketEntry[peerAddress=192.168.97.21/162,socket=Socket[addr=qa-mv-0640.corp.aeroscout.com/192.168.97.21,port=162,localport=51072],lastUse=Mon > >> Mar 09 04:30:03 IST 1970,readBufferPosition=-1] > >> > >> {192.168.97.21/162=SocketEntry[peerAddress=192.168.97.21/162,socket=Socket[addr=qa-mv-0640.corp.aeroscout.com/192.168.97.21,port=162,localport=51072],lastUse=Mon > >> Mar 09 04:30:03 IST 1970,readBufferPosition=-1]} > >> > >> Waking up selector for new message > >> > >> Socket has not been used for 10002 milliseconds, closing it > >> > >> Socket to 192.168.97.21/162 closed due to timeout > >> > >> Adding operation 8 for: > >> SocketEntry[peerAddress=192.168.97.21/162,socket=Socket[unconnected],lastUse=Mon > >> Mar 09 04:30:13 IST 1970,readBufferPosition=-1] > >> > >> java.nio.channels.ClosedChannelException > >> > >> Firing transport state event: > >> org.snmp4j.transport.TransportStateEvent[source=org.snmp4j.transport.DefaultTcpTransportMapping@1d6c6de8,peerAddress=192.168.97.21/162,newState=4,cancelled=false,causingException=java.nio.channels.ClosedChannelException] > >> > >> State changed to Closed Peer address 192.168.97.21/162 > >> > >> Exception in thread "DefaultTCPTransportMapping_192.168.60.80/0" > >> java.lang.RuntimeException: java.nio.channels.ClosedChannelException > >> > >> at > >> org.snmp4j.transport.DefaultTcpTransportMapping$ServerThread.processPending(DefaultTcpTransportMapping.java:697) > >> > >> at > >> org.snmp4j.transport.DefaultTcpTransportMapping$ServerThread.run(DefaultTcpTransportMapping.java:893) > >> > >> at java.lang.Thread.run(Thread.java:745) > >> > >> Caused by: java.nio.channels.ClosedChannelException > >> > >> at > >> java.nio.channels.spi.AbstractSelectableChannel.register(AbstractSelectableChannel.java:197) > >> > >> at > >> org.snmp4j.transport.DefaultTcpTransportMapping$SocketEntry.addRegistration(DefaultTcpTransportMapping.java:433) > >> > >> at > >> org.snmp4j.transport.DefaultTcpTransportMapping$ServerThread.processPending(DefaultTcpTransportMapping.java:658) > >> > >> ... 2 more > >> > >> Mon Feb 12 18:10:47 IST 2018 Sending message > >> > >> Looking up connection for destination '192.168.97.21/162' returned: null > >> > >> {} > >> > >> Socket for address '192.168.97.21/162' is closed, opening it... > >> > >> Trying to connect to 192.168.97.21/162 > >> > >> Mon Feb 12 18:10:57 IST 2018 Sending message > >> > >> Looking up connection for destination '192.168.97.21/162' returned: > >> SocketEntry[peerAddress=192.168.97.21/162,socket=Socket[unconnected],lastUse=Mon > >> Mar 09 04:30:23 IST 1970,readBufferPosition=-1] > >> > >> {192.168.97.21/162=SocketEntry[peerAddress=192.168.97.21/162,socket=Socket[unconnected],lastUse=Mon > >> Mar 09 04:30:23 IST 1970,readBufferPosition=-1]} > >> > >> Socket for address '192.168.97.21/162' is closed, opening it... > >> > >> Trying to connect to 192.168.97.21/162 > >> > >> Mon Feb 12 18:11:07 IST 2018 Sending message > >> > >> Looking up connection for destination '192.168.97.21/162' returned: > >> SocketEntry[peerAddress=192.168.97.21/162,socket=Socket[unconnected],lastUse=Mon > >> Mar 09 04:30:33 IST 1970,readBufferPosition=-1] > >> > >> {192.168.97.21/162=SocketEntry[peerAddress=192.168.97.21/162,socket=Socket[unconnected],lastUse=Mon > >> Mar 09 04:30:33 IST 1970,readBufferPosition=-1]} > >> > >> Socket for address '192.168.97.21/162' is closed, opening it... > >> _______________________________________________ > >> SNMP4J mailing list > >> SNMP4J@agentpp.org > >> https://oosnmp.net/mailman/listinfo/snmp4j > > > _______________________________________________ SNMP4J mailing list SNMP4J@agentpp.org https://oosnmp.net/mailman/listinfo/snmp4j