[zeromq-dev] epgm: PUB and SUB sockets on same host cant communicate

Steven McCoy steven.mccoy at miru.hk
Mon Sep 10 17:51:47 CEST 2012


On 10 September 2012 10:26, Michael Haberler <mail17 at mah.priv.at> wrote:

> I have epgm publisher & subscriber working just fine - as long as they run
> on different hosts
>
> both on the same host with say 'epgm://eth0;239.192.1.1:5556' are unable
> to communicate, regardless of using bind() or connect() on the subscriber
> side
>
> is this a known restriction? any workarounds? didnt find any hints in TFM
>
>
Yes, a design decision for 3.x.  The workaround is to simply add an IPC
endpoint to the socket for local apps.  You can hard hack the support back
in too, it's just a socket option on the underlying PGM socket.

I plan to implement a slower more flexible multicast transport that
supports such paradigms, another popular request is atomic multicast.
 Unfortunately no ETA or early access for a while, subject to available
research time.

-- 
Steve-o
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