On Thu, 2018-05-31 at 16:43 +0530, Dev Aggarwal wrote: > I recently used ROUTER and DEALER sockets, which used multi-part > messages > to separate identity of sender and the message data. > > I personally, found this approach quite sophisticated. > > But then, I found some use for the PUB and SUB socket pair. > I was surprised to see the examples in the guide not using multi-part > messages. > Instead they used concatenation to append the "TOPIC" to the main > message > and then filter out based on that. > > Is there a specific reason for doing concatenation, instead of using > the > first part of a multi-part message? > > Regards, > Dev
You can use a separate frame (first one) for the topic if you wish. It will work, but it's not mandatory. -- Kind regards, Luca Boccassi
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