[zeromq-dev] v3.1 publisher filtering

[Joshua Foster]

Yes, I was wrong. Sorry for the incorrect info.

Joshua

On 3/14/2012 5:30 PM, Steve wrote:
> Shripad,
>
> You are correct.  3.1 *does* filter the messages on the publisher side 
> whereas 2.1 does not.  I verified this with WireShark as well.
>
> Thanks again,
>
> Steve
>
>
>
> On Wed, Mar 14, 2012 at 1:51 PM, Steve <steve.friendly at gmail.com 
> <mailto:steve.friendly at gmail.com>> wrote:
>
>     Shripad,
>
>     It sounded like Pub/Sub was essentially the same on 2.1 vs 3.1
>     other than the XPUB / XSUB.  So, I just took the example from the
>     0MQ guide which is v2.1 I believe.  I will try your test on 3.1
>     and verify.
>
>     Thanks for looking into this!
>
>     Steve
>
>
>
>     On Wed, Mar 14, 2012 at 3:07 AM, Shripad K
>     <assortmentofsorts at gmail.com <mailto:assortmentofsorts at gmail.com>>
>     wrote:
>
>         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.barber at gmail.com <mailto:ian.barber at gmail.com>> wrote:
>
>
>
>             On Wed, Mar 14, 2012 at 1:31 AM, Joshua Foster
>             <jhawk28 at gmail.com <mailto:jhawk28 at 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
>
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