[zeromq-dev] Multi subscribe and single unsubscribe

[Navneet Kumar]

Hello everyone,

I was testing with PUB-SUB and found that
When I subscribe to a topic twice, then unsubscribe once,
and again subscribe I receive all messages.
Messages queued at the PUB when I unsubscribed only once.

However if I unsubscribe twice or subscribe only once and unsubscribe once.
I will get messages only after the next subscribe.

I wanted to know the internal mechanism of how the PUB handles
multiple subscribe and unsubscribe messages and when does it
queue messages for the client.


Thanks
-- 
Navneet Kumar
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