[zeromq-dev] Dealer router scenario

James Marcus marcus.james at gmail.com
Thu Jan 31 02:41:10 CET 2013


Thanks.  Yes we are using 3.2.

James


On Wed, Jan 30, 2013 at 2:41 PM, Pieter Hintjens <ph at imatix.com> wrote:

> On Wed, Jan 30, 2013 at 5:43 PM, James Marcus <marcus.james at gmail.com>
> wrote:
>
> > When we use the Dealer/Router scenario we can send a message but the
> dealer
> > doesn't get a message back.  We can send a message to the router and the
> > message is received by the router, and we can send it back without
> > exceptions, but the dealer is blocked on receive.
>
> You don't say what version of 0MQ you're using. Assuming it's 3.2, try
> setting the ZMQ_ROUTER_MANDATORY option on the router socket, and then
> check for errors. If you're sending with invalid addresses, messages
> otherwise get dropped silently. This is the most likely error.
>
> > Remote_lat and local_lat work on the machines. local_thr and remote_thr
> > seems like gets are blocked.
>
> Are you by any chance mixing different versions of 0MQ?
>
> > Binding on a PUB socket we use tcp://* throws an exception, is this by
> > design?  Because this seems to work on the our development VMs.
>
> You can't bind to "tcp://*", you have to specify an interface and a
> port. So, "tcp://*:*" and please read the zmq_tcp man page.
>
> > What are the common issues that block replies to the dealer from the
> router?
> > Can this be an OS/Networking issue, or a bug?
>
> Almost definitely a bug in your application causing the reply address
> (first frame of each message) to be incorrect.
>
> -Pieter
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