[zeromq-dev] zmq_msg_send blocks reading from zmq::mailbox_t

[Pieter Hintjens]

Can you make a minimal test case?

On Thu, Jul 2, 2015 at 2:12 AM, Marcin Romaszewicz <marcin at brkt.com> wrote:
> Hi Guys,
>
> We had our prod systems running on 3.2.4, and to work around some file
> descriptor leaks, I'm testing 4.1.2 before back-porting jbreams' heartbeats
> patch, and testing unmodified 4.1.2 is failing for me in production.
>
> I've got ZMQ_ROUTER sockets wedged in zmq_msg_send, spinning in a while
> (True) loop calling recv() on mailbox in zmq::socket_base_t::send().
>
> Before I start chasing the cause of this, is there a known mistake on my
> part which could cause this?
>
> The socket is a ZMQ_ROUTER, with all settings at default except for
> ZMQ_LINGER=0 and ZMQ_ROUTER_MANDATORY=1
>
> I'm pretty sure I'm sending stuff to a dead peer, but not 100% certain yet.
>
> Any tips on what I should be looking for to diagnose this? The same code,
> unmodified, doesn't have this issue against zmq 3.2.4.
>
> Thanks,
> -- Marcin
>
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