From: Jeff Mark [mailto:[EMAIL PROTECTED]] > > I've seen several approaches for configuring an outbound proxy. > The FAQ suggests using DHCP or SLP. PHONECTL was another option. > In draft-kempf-sip-findsrv-00.txt (Feb 2000) there was a statement > in the introduction that says "... a UAC can send an INVITE message > via multicast in order to determine its local outbound proxy." > > Consider the following: if I multicast an INVITE request with > Max-Forwards: 0 and then wait for the proxies listening on the > multicast address to respond with 483 Too Many Hops. The UAC could > use the address the 483 came from as the value of the outbound > proxy and unicast future requests through this proxy. Would this > be another valid approach to finding an outbound proxy? Any > thoughts? Unfortunately this won't work, since servers are not supposed to respond to multicast requests with anything other than 2xx or 6xxs. [10.1 of bis02] (Well, it turns out that there are actually some 4xx that a server can return, but 483 is not one of them. HTH, - Jo. _______________________________________________ Sip-implementors mailing list [EMAIL PROTECTED] http://lists.cs.columbia.edu/mailman/listinfo/sip-implementors
