[zeromq-dev] Publish / Subscribe vs Multicast

[gonzalo diethelm]

> Yes, the all functionality is all gone. That's why I've discouraged
you
> from examining the old examples. Now you simply bind the sockets to
> appropriate endpoints and that's it. You need no central naming
service
> like zmq_server.

Ok, an even more basic question then: when should I call bind() and when
should I call connect() on a given socket?

> You can bind & connect a socket multiple times. For example, you can
> bind a PUB socket to PGM multicast group and at the same time you can
> connect to the remote logger service via TCP. Etc.
> 
> In your case (butterfly) you would want each zmq_streamer to bind both
> inbound and outbound sockets. Each of your components will simply
> connect to the upstram and downstream zmq_streamer.

I thought I would bind() a socket whenever I want that socket to receive
messages, and I would connect() a socket whenever I want to send
messages over it; kind of bind -> passive, connect -> active. Am I
totally off the chart here?

-- 
Gonzalo Diethelm



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