[zeromq-dev] Can a broker explicitly deny certain subscriptions to certain clients?

Doron Somech somdoron at gmail.com
Wed Sep 9 20:32:33 CEST 2015


Great to hear. Thanks
On Sep 9, 2015 12:12 PM, "David Jelenc" <david.jelenc at fri.uni-lj.si> wrote:

> Hi Doron,
>
> many thanks for you suggestion. I did end up using your solution with
> manual subscriptions.
>
> (There was a minor glitch when using it win a broker proxy, but it has
> been fixed.)
>
> Best,
> David
>
> On 31. 08. 2015 21:52, Doron Somech wrote:
> > You can use xpub manual subscription, you can read more here:
> >
> > http://somdoron.com/2014/12/token-pubsub/
> >
> > If for NetMQ but applicable also for zeromq.
> >
> > On Mon, Aug 31, 2015 at 6:41 PM, David Jelenc
> > <david.jelenc at fri.uni-lj.si <mailto:david.jelenc at fri.uni-lj.si>> wrote:
> >
> >     Hi,
> >
> >     I'm wondering if there is a way to explicitly deny a certain client
> from
> >     subscribing to a certain topic.
> >
> >     I have a broker set up, where some clients publish and other
> subscribe.
> >
> >        client                              client
> >     PUBLISHER -------- BROKER -------- SUBSCRIBER
> >
> >     PUB --- (XSUB | broker  logic | XPUB) --- SUB
> >
> >     Since I'm using a XPUB socket on the broker, I can see all
> subscription
> >     and subscription cancellation messages. However, once these messages
> >     reach broker, the client is already subscribed.
> >
> >     Is there any way on how I can prevent a client from subscribing to
> >     certain topics (while allowing the same client to subscribe to some
> >     other) and enforce this on the broker side (in the broker logic)?
> >
> >     Any help would be greatly appreciated.
> >
> >     Best,
> >     David
> >     _______________________________________________
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> >
> >
> >
> >
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