igmpproxy / Bugs / #20 Support multiple multicast sources

#20 Support multiple multicast sources

Status: open

Owner: nobody

Labels: None

Priority: 5

Updated: 2014-07-14

Created: 2012-02-03

Creator: Ambroz Bizjak

Private: No

If a multicast packet comes in on the upstream interface to a group address, but from a different IP source than previously seen, igmpproxy will forget about the old source, and the corresponding multicast route will time out shortly - even if the multicast stream from the original source is never interrupted.

I haven't investigated what in particular the suspicious packet is; it did however originate from the multicast router.

The submitted patch resolves the issue by adding support for multiple source IPs for any given group. Instead of keeping a single source address, MAX_ORIGINS addresses are kept. If we run out of source address slots, the least recently used one will be reused.

Discussion

Ambroz Bizjak - 2012-02-03

add support for multiple multicast sources

igmpproxy-0.1-multiple-origins.diff

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Ambroz Bizjak - 2012-02-03

The interrupting packet is likely an IGMP Group-Specific Query.

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Zhumakhanov Maxim - 2012-02-21

The Attached File is corrupted. Please, fix it. Thank you.

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Ambroz Bizjak - 2012-02-21

add support for multiple multicast sources, 2nd upload attempt

igmpproxy-0.1-multiple-origins.diff

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Support multiple multicast sources

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#20 Support multiple multicast sources

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