On Mon, Jun 7, 2021 at 10:38 PM Michael Maier <m1278...@mailbox.org> wrote:
> On 06.06.21 at 22:19 Joshua C. Colp wrote: > > On Sun, Jun 6, 2021 at 3:57 PM Michael Maier <m1278...@mailbox.org> > wrote: > > > >> Hello! > >> > >> Using Asterisk 18.4 / pjisp, timers are advertised as supported though > >> disabled in config with timers=no. > >> > >> This does not happen initially (during the Invite sequence) but later on > >> in 200 Ok as answer to a reInvite or as the answer to an Update methode. > >> > >> Is there any reason why it's suddenly activated later on though it's > >> deactivated? From my point of view, this smells like a bug. > >> > > > > It'd be a bug in PJSIP itself, probably in the INVITE session[1] code as > > that is what responsible for this. > > Thanks for your hint! > > They are using a function to clean up the supported header > (cleanup_allow_sup_hdr). > > Let's take a look at the creation of the 200 Ok answer of the received > update - I could find this path (there is no SDP in the received Update): > > inv_respond_incoming_update > pjsip_dlg_create_response > pjsip_endpt_create_response > pjsip_msg_create > pj_list_init > > pjsip_timer_update_resp > pjsip_dlg_send_response > > If I didn't oversee anything, I couldn't find the usage of > cleanup_allow_sup_hdr - but I couldn't find either where the supported > header should have been added. Do you have an idea? > It's added to the global Supported header, which is added elsewhere to messages[1]. [1] https://github.com/pjsip/pjproject/blob/master/pjsip/src/pjsip/sip_dialog.c#L1437 -- Joshua C. Colp Asterisk Technical Lead Sangoma Technologies Check us out at www.sangoma.com and www.asterisk.org
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