[zeromq-dev] publisher side filtering

ernie elukie at comcast.net
Wed Jun 30 14:24:17 CEST 2010


Pieter,

> 0MQ does not provide publishers with the knowledge of what clients
> connect.  This is a weakness we need to work on.
>
> But if you imagine a multicast network you understand why.  Clients
> connect to a switch, not to the publisher.  There is thus no way by
> default to selectively publish.  Thus, clients receive everything and
> filter at their edge.
>
> A TCP unicast network can of course do it differently but 0MQ is
> designed to work as far as possible with any transport and the
> multicast model has influenced the design of its pubsub sockets.

Yes, I see why 0MQ does what it does.

Can I build up my own pub/sub system with a set of more basic 0MQ TCP 
patterns?

Ernie



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