[zeromq-dev] [PATCH] Resolve issue 104, ZMQ_MCAST_LOOP enabled by default

[Martin Sustrik]

On 10/21/2010 10:51 AM, Steven McCoy wrote:
> I thought I had this in before, I guess hidden by changing the default 
> rate limit for testing
I am not sure what's exactly being solved here.

AFAIU the problem is that PGM doesn't work as expected via loopback.

If so, changing the default doesn't solve the problem, it only makes it 
less visible which is not a good thing.

There are two solutions I can think of:

1. Don't allow PGM on loopback altogether.

2. Fix the faulty behaviour of multicast+loopback either on OpenPGM or 
0MQ level.

In any case, important point to take into account is that with 0MQ 
transport mechanism is abstracted. Thus, we can disable PGM on loopback 
altogether and ask people to use IPC for that kind of thing. Also, when 
developing applications, devs can simply use IPC and then switch to PGM 
when doploying the product to the test env.

Martin
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