[Live-devel] multicast streams using same port

[Warren Young]

On 6/26/2012 8:42 AM, Ross Finlayson wrote:
>> 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.

....if the receiving program bind()s to INADDR_ANY.  So isn't the fix 
simple?  bind() each socket to the multicast address of interest.

I've never used Live555 to receive a multicast stream, but doesn't 
Live555 need to be given the address anyway for the IGMP group add 
setsockopt() call?  If that's true, it's not like Live555 doesn't have 
the information it needs to cope with the Linux way of handling 
multicast reception.

Okay, granted, it's a Linux-specific exception.  Is an ifdef so distasteful?