I agree that it's not ideal for the multicast-bound socket to be used for unicast. For one thing, on some platforms the binding address affects the source address, which can be confusing for someone trying to respond (or sniff).
So, now's our opportunity for fixing the problem. The socket()/sendto()/close() method seems the simplest, but if possible I'd prefer a more elegant solution using sockets we've already bound. I could walk the G_IncomingSocketList to find the first socket that has can_send_mcast set to true -- that is only set on the unicast UDP socket, marking it for use for multicast sending in slpd_knownda.c --Nick > Hi Nick, > > In my opinion, a socket bound to a multicast address (c.q. the standard slp > port) should never be used for sending data, since a reply (as in a 'private > conversation') will need to be sent to that 'public' socket. Not only is > this somewhat unpretty, it also gives problems when other processes bind to > the same multicast address/port as well. It is uncertain who will receive > the reply then. But since SLP defines that unicasts can be sent to the > standard multicast port, multiple processes binding won't work properly > anyway. > > Please correct me if I'm wrong here; this is just my idea of how things > work (after a lot of testing). > > BR, > Roel > >> >> >> --Nick >> >> >> >> >> ------------------------------------------------------------------------------ >> This SF.net email is sponsored by >> >> Make an app they can't live without >> Enter the BlackBerry Developer Challenge >> http://p.sf.net/sfu/RIM-dev2dev >> >> >> _______________________________________________ >> Openslp-devel mailing list >> Openslp-devel@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/openslp-devel >> >> > >
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