Steve I just checked via Wireshark. It is doing PUB side filtering. Are you sure that you are testing this with zmq 3.1? I setup a simple PUB/SUB in zeromq.node <https://github.com/shripadk/zeromq.node> fork. Here is my test code:
// subscriber: var zmq = require('zmq-3.0'); var sub = zmq.createSocket('sub'); sub.connect('tcp://0.0.0.0:3333'); sub.on('message', function(buf) { console.log(buf.toString()); }); sub.subscribe('a'); // publisher: Array.prototype.rotate = function() { var elem = this.shift(); this.push(elem); return elem; }; var zmq = require('zmq-3.0'); var pub = zmq.createSocket('pub'); pub.bindSync('tcp://0.0.0.0:3333'); var arr = ['a', 'b', 'c']; var count = 0; setInterval(function() { pub.send( arr.rotate() + ':' + (count++) ); }, 2500); With 2.1 Wireshark shows that it is performing a subscriber side filtering. Not with 3.1 though. On Wed, Mar 14, 2012 at 1:05 PM, Ian Barber <ian.bar...@gmail.com> wrote: > > > On Wed, Mar 14, 2012 at 1:31 AM, Joshua Foster <jhaw...@gmail.com> wrote: > >> PUB functions the same in 3.1 as 2.1, but XPUB actually does publisher >> side filtering. (if I read the code correctly) >> >> Joshua >> > > Don't think you did Joshua - they both use the same distribution code > (dist/send to matching). Pub is really just a very thin wrapper around > Xpub, and removes the recving of subs to the app code. > > Ian > > _______________________________________________ > zeromq-dev mailing list > zeromq-dev@lists.zeromq.org > http://lists.zeromq.org/mailman/listinfo/zeromq-dev > >
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