I tried this (and some variations) to no avail:
request_route {
insert_hf("Contact: $fu\r\n");
...
...
I see the Contact header inserted but after receiving the first SIP INVITE (ie
too late). Is there a way I can instruct the DIALOG module to use a value of
Contact that’s been computed dynamically on the config? Is it possible to
modify what Kamailio holds in memory for the value of Contact before the dialog
module processes it? Any other points on how I could deal with this missing
Contact header?
Thank you so much
With best wishes,
Unai Rodriguez
On 24 Jan 2024 at 13:54 +0100, Alex Balashov via sr-users
<sr-users@lists.kamailio.org>, wrote:
> Hi,
>
> Contact is mandatory in INVITEs. Per RFC 3261 § 8.1.1.8 ("Contact"):
>
> The Contact header field MUST be present and contain exactly one SIP
> or SIPS URI in any request that can result in the establishment of a
> dialog. For the methods defined in this specification, that includes
> only the INVITE request.
>
> -- Alex
>
> > On 24 Jan 2024, at 05:42, 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:
>
> --
> Alex Balashov
> Principal Consultant
> Evariste Systems LLC
> Web: https://evaristesys.com
> Tel: +1-706-510-6800
>
> __________________________________________________________
> 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!
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