[zeromq-dev] zmq fundamental clarification

Steven McCoy steven.mccoy at miru.hk
Fri Jan 25 15:10:10 CET 2013

On 25 January 2013 04:10, Joachim Worringen <joachim.worringen at iathh.de>wrote:

> 2. Does zmq support source-specific multicast?
0mq does not but OpenPGM does.  The limitation is the transport
specification and how to incorporate the semantics of SSM.

Suggestions welcome, or you could maybe patch in a new 0mq socket option to
add SSM support: you can add new sources to PGM at any time:

pgm_setsockopt (sock, IPPROTO_PGM, PGM_JOIN_SOURCE_GROUP,
&group_source_req, sizeof (group_source_req)

OS limitations may prevent joining a SSM group after a ASM group:


Possible new super-terse syntax:


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