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...
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