Hi Alex, Thanks for that, I’ve been reading the RFC but clearly missed the bit about section 13.
Dan > On 30 Nov 2018, at 15:10, Alex Balashov <abalas...@evaristesys.com> wrote: > > Hi, > > Note that there are two different kinds of ACKs. An ACK for a 2xx > transaction is an in-dialog request that follows the rules for Section > 13, and having two Via hops in one of those is entirely appropriate. > > On Fri, Nov 30, 2018 at 02:59:52PM +0000, Dan Quinney wrote: > >> Hi all, >> >> I’m having some issues with ACK’s. >> >> Specifically, when an ACK reaches Kamailio from either Asterisk or an >> endpoint, Kamailio is adding a second Via header - which isn’t valid as per >> RFC 3261 (17.1.1.3); >> >> “The ACK MUST contain a single Via header field, and this MUST be equal >> to the top Via header field of the original request." >> >> Endpoints are registered with Kamailio but INVITES are routed via Asterisk >> for dial plan and media reasons. >> >> I’m running fairly bog-standard Kamailio and Asterisk installs. >> >> I’ve attached a sample PCAP for if anyone has any suggestions. >> >> Thanks. >> Dan >> > > >> _______________________________________________ >> Kamailio (SER) - Users Mailing List >> sr-users@lists.kamailio.org <mailto:sr-users@lists.kamailio.org> >> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users >> <https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users> > > > -- > Alex Balashov | Principal | Evariste Systems LLC > > Tel: +1-706-510-6800 <tel:+1-706-510-6800> / +1-800-250-5920 > <tel:+1-800-250-5920> (toll-free) > Web: http://www.evaristesys.com/ <http://www.evaristesys.com/>, > http://www.csrpswitch.com/ <http://www.csrpswitch.com/> > > _______________________________________________ > Kamailio (SER) - Users Mailing List > sr-users@lists.kamailio.org <mailto:sr-users@lists.kamailio.org> > https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users > <https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users>
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