[zeromq-dev] Question about PGM Pub/Sub

Steven McCoy steven.mccoy at miru.hk
Mon Apr 11 19:38:08 CEST 2016


On 11 April 2016 at 05:42, Luedicke, Jens <Extern.Luedicke at kmweg.de> wrote:

>
>
> The sockets are connected to “epgm://eth1;239.255.255.255.0:5555”.
>
>
>
> If I start the processes on different systems in my LAN, everything works
> fine. However,
>
> once I set a packet loss on one network device, there a quite a few NAKs,
> but no repair process
>
> in started and eventually the ping/pong process stops.
>
>
>

This typically implies the sender may not be listening on the correct IP
address, I would suggest replacing "eth1" with the IP address you wish to
use.

I have embarked on a new campaign to improve the feedback the API provides
when setting up connectivity as this continues to be an ongoing common
problem and entirely non-obvious on new platforms like OS X El Capitan.
Today there are multiple levels of logging but the interesting pieces
require compile time configuration.

Enable trace logging to see which interfaces are in use with the
environment variable PGM_MIN_LOG_LEVEL=TRACE

...
Trace: Binding receive socket to INADDR_ANY
Trace: Join multicast group 239.192.0.1 on interface index 4
Trace: Multicast send interface set to 10.208.0.98 index 4
...

-- 
Steve-o
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