Hi Unai, The CONTACT is used as the R-URI in subsequent replies so upstream providers parse this from my experience.
You can build one yourself in Kamailio if needed using the textops module - https://kamailio.org/docs/modules/5.7.x/modules/textops.html#textops.f.append_hf Rough examples: Native: insert_hf("Contact: $fu\r\n"); Kemi Python: KSR.textopsx.append_hf_value("Contact", "<sip:" + KSR.pv.get("$fU") + "@" + KSR.pv.get("$si") + ":5060>") Thanks, John. On Wed, 24 Jan 2024 at 11:15, Unai Rodriguez via sr-users < sr-users@lists.kamailio.org> wrote: > Dear List, > > I’m trying to set up the dialog module and I keep getting the error "bad > sip message or missing Contact hdr”: > > --- > Jan 23 11:34:17 server.example.com kamailio[2495]: 16(2511) ERROR: {1 > 78451036 INVITE 2ef1d082-3486-123d-0abc-02c8e9c6c24e} dialog > [dlg_handlers.c:219]: populate_leg_info(): bad sip message or missing > Contact hdr > Jan 23 11:34:17 server.example.com kamailio[2495]: 16(2511) ERROR: {1 > 78451036 INVITE 2ef1d082-3486-123d-0abc-02c8e9c6c24e} dialog > [dlg_handlers.c:952]: dlg_new_dialog(): could not add further info to the > dialog > --- > > This is for MRCP traffic and the SIP INVITEs do not contain the Contact > header. They look like this: > > ---- > INVITE sip:some.mrcp.server.example.com:8060 SIP/2.0 > Via: SIP/2.0/TCP 10.10.10.10:5099;branch=z9hG4bK5Kpey3r13SBNQ > Max-Forwards: 70 > From: <sip:10.10.10.10:5099>;tag=134a3eKD2a8Ua > To: <sip:some.mrcp.server.example.com:8060> > Call-ID: 051df0ff-3541-123d-f090-02f373ff014c > CSeq: 78491159 INVITE > User-Agent: google_stt > Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, PRACK, MESSAGE, SUBSCRIBE, > NOTIFY, REFER, UPDATE > Supported: timer, 100rel > Content-Type: application/sdp > Content-Disposition: session > Content-Length: 329 > > v=0 > o=FreeSWITCH 2474358185109188492 5282339568667506935 IN IP4 10.10.10.10 > s=- > c=IN IP4 10.10.10.10 > t=0 0 > m=application 9 TCP/MRCPv2 1 > a=setup:active > a=connection:new > a=resource:speechrecog > a=cmid:1 > m=audio 12034 RTP/AVP 0 8 96 > a=rtpmap:0 PCMU/8000 > a=rtpmap:8 PCMA/8000 > a=rtpmap:96 L16/8000 > a=sendonly > a=mid:1 > ---- > > According to the RFC, the Contact header is not mandatory ( > https://datatracker.ietf.org/doc/html/rfc3261#section-8.1.1) and I don’t > have an easy way of adding the Contact header to the INVITEs. Is there a > way to configure Kamailio’s dialog module to do without the Contact header? > Any pointers appreciated. > > Thank you so much > > With best wishes, > Unai Rodriguez > __________________________________________________________ > Kamailio - Users Mailing List - Non Commercial Discussions > To unsubscribe send an email to sr-users-le...@lists.kamailio.org > Important: keep the mailing list in the recipients, do not reply only to > the sender! > Edit mailing list options or unsubscribe: >
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