[zeromq-dev] random crashs and double disconnect events

Francis Le Bourse zno-reply-francis.lebourse at sfr-sh.fr
Fri Nov 28 11:49:58 CET 2014

This was in fact a scheduling issue, not a zeromq issue. The number of 
iothreads must be limited to one in order to process the 
accepted/disconnected/... events in te required order.
Sorry for the noise.

On 11/20/2014 1:16 PM, Francis Le Bourse wrote:
> Hi,
> I have observed random crashs in zeromq, for example in 
> mailbox::recv() at assert(ok), and double disconnect sequences on 
> servers when monitoring is active
>     - event_accepted(fd, addr)
>     - event_disconnected(fd, addr)
>     - a second event_disconnectd(same fd, addr) sometimes later.
> The attached test programs exhibits the issue after a few minutes. The 
> most frequent error is the double disconnect but another random crash 
> may occur.
> Start:
>     ./tserver
>     ./tclient
> Tested on Centos 6.5 and 6.6, zeromq-3.2.4, czmq-2.0.3
> Cheers,
> Francis

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