From the top of my head, a SUB socket without any subscriptions will get no messages at all. This is done this way to avoid flooding a newly constructed socket. Anyway, the source is your final friend... Cheers, Gonzalo On Mon, Mar 16, 2015 at 10:52 PM, Garrett D'Amore <garrett@xxxxxxxxxx> wrote: > > > On Mar 16, 2015, at 2:45 PM, Benoit Labaere <benoit.labaere@xxxxxxxxx> > wrote: > > > > Putting a device between pub and sub sockets seems to require the sub > socket of the device to be subscribed to something, an empty string for > example. > > Is this the intended behavior, or did I miss some step ? > > I thought by default sub sockets were subscribed to everything. But > subscribing to an empty string should have that effect as well. :-) > > - Garrett > > > -- Gonzalo Diethelm gonzalo.diethelm@xxxxxxxxx