[zeromq-dev] Getting information about connected hosts, hitting high water mark, etc.

Lourens Naudé lourens at methodmissing.com
Tue May 14 16:06:14 CEST 2013

Hi Randall,

There's events support built into the recent 3.2.x releases :


Currently there's no events bubbling up for HWM thresholds etc.

On Tue, May 14, 2013 at 1:54 PM, Randall Nortman <rnzmq at wonderclown.net>wrote:

> While I'm complaining about stuff missing from the current API, let me
> mention this: It would be nice to be able to get at some information
> about what peers are currently connected to a socket, and how close
> each peer is to hitting its high water mark (i.e., how many queued
> messages).  It would also be nice to get connect/disconnect and
> muted/unmuted notifications somehow.  These could be reported via
> zmq_poll() (either as ZMQ_POLLERR or a new ZMQ_POLLPEERSTATUS or
> something like that), or if you want to get really fancy, report them
> back to the app via a special inproc PUB/SUB socket.  I like the
> latter, but it's more like a high-level API while the rest of libzmq
> is currently more like a low-level socket API.  A higher-level library
> could always build the latter on top of the former.
> By the way, my complaining is a form of flattery.  I wouldn't bother
> complaining about something I didn't really want to use.  ZMQ is
> pretty cool and has a lot of promise, it just has a little more
> maturing to do.
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