Thanks for the clarification! -dan
From: sr-users [mailto:sr-users-boun...@lists.sip-router.org] On Behalf Of Daniel-Constantin Mierla Sent: Tuesday, November 3, 2015 2:23 AM To: Kamailio (SER) - Users Mailing List <sr-users@lists.sip-router.org> Subject: Re: [SR-Users] Serial Forking and Lookup Function Hello, On 03/11/15 05:31, Daniel W. Graham wrote: Looking for some clarification / direction on setting up forking. I have configured clients to use q-value and is stored in location table. I see several examples as described in TM module documentation but does not mention use of lookup() function. Per registrar documentation- lookup() The functions extracts username from Request-URI and tries to find all contacts for the username in usrloc. If there are no such contacts, -1 will be returned. If there are such contacts, Request-URI will be overwritten with the contact that has the highest q value and optionally the rest will be appended to the message (depending on append_branches parameter value). Append_branch parameter The parameter controls how lookup function processes multiple contacts. If there are multiple contacts for the given username in usrloc and this parameter is set to 1, Request-URI will be overwritten with the highest-q rated contact and the rest will be appended to sip_msg structure and can be later used by tm for forking. Does lookup() build the destination set and then I can proceed by doing t_load_contacts(), t_next_contacts() and setup failure route? Any direction is appreciated! Yes, lookup location builds the destination set with all available contacts in location table. A t_relay() at that moment will do parallel forking, ingnoring the q values. To do serial forking, use t_load_contacts(), t_next_contacts() and failure_route. Cheers, Daniel -- Daniel-Constantin Mierla http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda Book: SIP Routing With Kamailio - http://www.asipto.com Kamailio Advanced Training, Nov 30-Dec 2, Berlin - http://asipto.com/kat
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