[Live-devel] multicast streams using same port

[Ross Finlayson]

> It seems we face some problems to receive several streams using different multicast groups on same port.

Are you using Linux?  The Linux kernel has a bug[*] whereby different sockets joining different IP multicast groups with the same port number will receive packets that were sent to all multicast groups.  However BSD (FreeBSD, OpenBSD, Mac OS X) does not have this problem, nor even does Windows, as far as I know, so if this issue is important to you, then I suggest that you use one of those OSs instead of Linux.

[*] Unfortunately at least some Linux kernel fanatics don't think it's a bug, so it's not likely to be fixed in the released Linux kernel source code any time soon.

This question has arisen on this mailing list several times in the past, e.g. see the message threads at:
	http://lists.live555.com/pipermail/live-devel/2008-June/008757.html
	http://lists.live555.com/pipermail/live-devel/2010-September/012582.html
	http://lists.live555.com/pipermail/live-devel/2010-October/012630.html
		(but note especially my response at http://lists.live555.com/pipermail/live-devel/2010-October/012631.html )


Ross Finlayson
Live Networks, Inc.
http://www.live555.com/

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