On Sun, Dec 9, 2012 at 5:24 PM, Stefan Radomski < [email protected]> wrote:
> Hi there, > > setting the ZMQ_XPUB_VERBOSE option on an XPUB socket will only report > multiple subscriptions - for unsubscription, only the last unsubscription > is reported. This makes the option unusable to count actual subscribers as > some might already have unsubscribed and you'd never know. Is there a > reason unsubscriptions are not handled in the same manner as subscriptions? > And of what use is ZMQ_XPUB_VERBOSE if I can't know the number of > subscribers? > > The the email that kicked off the thread about using it: http://grokbase.com/t/zeromq/zeromq-dev/12b55dzeam/zmq-xpub-verbose-unsubscribe As described, the purpose is to allow sending last-value type messages on subscriber. If you are sending data to a managed list of clients, you'd be better served with router or similar. Ian
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