NPE 'void zmq.Mailbox.send(zmq.Command)'

[madrzak]

Hello again gents,

We are getting the following Null Pointer Exception.

Using the latest version 4.3 on Android. Can be replicated consistently enough after enabling/disabling Airplane mode on the device couple of times.

Any thoughts?

02-05 15:37:40.090 W/System.err: java.lang.NullPointerException: Attempt to invoke virtual method 'void zmq.Mailbox.send(zmq.Command)' on a null object reference 02-05 15:37:40.090 W/System.err: at zmq.Ctx.sendCommand(Ctx.java:517) 02-05 15:37:40.091 W/System.err: at zmq.ZObject.sendCommand(ZObject.java:382) 02-05 15:37:40.091 W/System.err: at zmq.ZObject.sendTermAck(ZObject.java:270) 02-05 15:37:40.091 W/System.err: at zmq.Own.checkTermAcks(Own.java:250) 02-05 15:37:40.091 W/System.err: at zmq.Own.processSeqnum(Own.java:105) 02-05 15:37:40.091 W/System.err: at zmq.ZObject.processCommand(ZObject.java:74) 02-05 15:37:40.091 W/System.err: at zmq.Command.process(Command.java:75) 02-05 15:37:40.091 W/System.err: at zmq.io.IOThread.inEvent(IOThread.java:80) 02-05 15:37:40.091 W/System.err: at zmq.poll.Poller.run(Poller.java:273) 02-05 15:37:40.092 W/System.err: at java.lang.Thread.run(Thread.java:762)

[fredoboulo]

Hi,

NPE at this precise location would mean that a mailbox has been destroyed. I would suspect either:

• socket has been closed
• IO thread or reaper has been destroyed.

Could you provide some code around that error to explain your usage? where, when and how does this code destroys sockets and context?

[daveyarwood]

Blocked pending response from @madrzak.