[zeromq-dev] PGM subscriber assert failure

Advait Alai advaitalai at gmail.com
Thu Apr 21 14:31:01 CEST 2011


>
> That's how IGMP works:  subscriptions to multicast groups are sent on
> 224.0.0.22.
>
> http://en.wikipedia.org/wiki/Internet_Group_Management_Protocol
>


Okay, but for epgm, this (IGMP V3 Membership Report) is the only packet I
get at the subscriber. For TCP, I get regular packet updates such as

0.000000    10.0.66.1 -> 10.0.22.1    TCP personal-agent > 45459 [PSH, ACK]
Seq=1 Ack=1 Win=91 Len=24 TSV=38025576 TSER=38025330
0.000042    10.0.22.1 -> 10.0.66.1    TCP 45459 > personal-agent [ACK] Seq=1
Ack=25 Win=92 Len=0 TSV=38025581 TSER=38025576

for every message that is sent by the publisher.

The IGMP packet tells the subscriber to subscribe to 225.0.0.1 to get the
data, but somehow the subscriber doesn't seem to do that...

When I try to decode udp.port=5555 as pgm, I do not get anything.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.zeromq.org/pipermail/zeromq-dev/attachments/20110421/4d761728/attachment.htm>


More information about the zeromq-dev mailing list