On 7/24/2010 3:39 AM, Pieter Hintjens wrote:
> Does that cloud have to be opaque by definition?  For example, the
> publisher socket knows how many clients have connected to it, and
> could report this to the application via getsocketopt...
>    
I'm fairly new to 0MQ, so this is absolutely not a counter to Pieter's 
request: I'm curious why you would want to know the number of 
subscribers - I can only think of two reasons

- Knowing when there are none so you can skip broadcasting un-attended data,
- Debugging

In debugging terms alone, it actually seems like being able to tell how 
many there are would be of fairly significant use.

- Oliver

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