[zeromq-dev] ZMQ_MCAST_LOOP: Control multicast loopback

Martin Sustrik sustrik at 250bpm.com
Thu Jun 24 14:55:03 CEST 2010


Emmanuel TAUREL wrote:
> Hello all,
> 
> On 24/06/2010 14:34, Martin Sustrik wrote:
>>> A side note, the more advanced functionality being developed in OpenPGM
>>> 5 such as congestion control completely fails on multicast loop.
>>>      
>> AFAICS the message is: "Never use multicast loopback."
>>
>> If so, wouldn't it make sense to disable multicast loopback entirely?
>>
> Does this mean that when using multicast and publish/subscribe, it is 
> not (or will not) be possible to have a subscriber on the same host than 
> the publisher?

I don't know. Let's wait for Steve's answer.

In any case, even if PGM loopback is not an option, 0MQ may transform 
multicast loopback connections into ipc connections behind the scenes.

Martin



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