Hello, the problem is the empty qop value, it has to be a token there, usually auth or auth-int.
The 'truncated' in the wireshark is just to indicate that it does not display the entire field there, just part of it, but internally it has all of it -- subsequently to that field is the list of parsed attributes insides it, which shows qop being empty. Cheers, Daniel On 19.11.25 02:02, David Cunningham via sr-users wrote: > Hi Henning, > > Thank you for the reply. An ngrep shows the full SIP packet, and there > is an empty "qop" value in the Authorization header: > > Authorization: Digest realm="sip.example.com > <http://sip.example.com>", nonce="aR0SEGkdEOQ2eLjMXqc05nC5+GDLOKUy", > algorithm=MD5, username="123456789", uri="sip:sip.example.com:5060 > <http://sip.example.com:5060>", > response="21c1d546986a43c871486fcf2ef3ff83", > cnonce="IWbhxqr9ut1LqMwj", nc=00000001, qop=. > > So I'm not sure why Wireshark says the packet is truncated. Would you > have any ideas on where to look for the reason? > > > On Wed, 19 Nov 2025 at 06:02, Henning Westerholt <[email protected]> wrote: > > Hello David, > > > > the cnonce is not so common but usually supported from kamailio. > If you are having a trace, have a look to the raw SIP packet to > see if it was maybe really truncated on the wire. The QOP seems to > be missing/truncated from the dump below. > > > > Cheers, > > > > Henning > > > > *From:*David Cunningham via sr-users <[email protected]> > *Sent:* Dienstag, 18. November 2025 03:34 > *To:* Kamailio (SER) - Users Mailing List > <[email protected]> > *Cc:* David Cunningham <[email protected]> > *Subject:* [SR-Users] error while parsing credentials > > > > Hello, > > > > We have one particular device which won't authenticate with > Kamailio, and are looking for any insight into why. When Kamailio > receives the REGISTER it logs: > > > > Nov 17 17:50:37 sip /sbin/kamailio[2293367]: ERROR: {1 2 REGISTER > mrXSmu5Gh} <core> [core/parser/digest/digest.c:323]: > find_credentials(): error while parsing credentials > Nov 17 17:50:37 sip /sbin/kamailio[2293367]: ERROR: {1 2 REGISTER > mrXSmu5Gh} auth [api.c:73]: pre_auth(): Error while looking for > credentials > > > > A redacted copy of the REGISTER is below. I note two unusual things: > > - On the Authorization header it says "[truncated]Authorization". > > - It includes a "cnonce" (client nonce) in the Authorization data, > which is unusual compared to our other SIP devices. > > Thanks in advance! > > > > Session Initiation Protocol (REGISTER) > Request-Line: REGISTER sip:sip.example.com:5060 > <http://sip.example.com:5060> SIP/2.0 > Message Header > To: "C25" <sip:[email protected] > <mailto:sip%[email protected]>> > SIP to display info: "C25" > SIP to address: sip:[email protected] > <mailto:sip%[email protected]> > SIP to address User Part: 123456789 > SIP to address Host Part: sip.example.com > <http://sip.example.com> > From: "C25" <sip:[email protected] > <mailto:sip%[email protected]>>;tag=mmVG392Qv > SIP from display info: "C25" > SIP from address: sip:[email protected] > <mailto:sip%[email protected]> > SIP from tag: mmVG392Qv > Contact: <sip:[email protected]:65477;transport=udp> > Contact URI: > sip:[email protected]:65477;transport=udp > Via: SIP/2.0/UDP 11.22.221.114:65477;branch=z9hG4bK.X0v8d63yc > CSeq: 2 REGISTER > Call-ID: iYC5fcJqy > [Generated Call-ID: iYC5fcJqy] > Max-Forwards: 70 > Allow: INVITE, ACK, CANCEL, BYE, OPTIONS, NOTIFY > User-Agent: Rogue sip 7.1.11 (stm32mp15-ya157c-v2) linux > Expires: 3600 > [truncated]Authorization: Digest realm="sip.example.com > <http://sip.example.com>", > nonce="aRvGYGkbxTQrS5pTzBoahdefo1xCqskN", algorithm=MD5, > username="123456789", uri="sip:sip.example.com:5060 > <http://sip.example.com:5060>", > response="ab717ce439c666e9b5651d0dc74dff9a", cnonce="MzrTCxYCoCPxZ > Authentication Scheme: Digest > Realm: "sip.example.com <http://sip.example.com>" > Nonce Value: "aRvGYGkbxTQrS5pTzBoahdefo1xCqskN" > Algorithm: MD5 > Username: "123456789" > Authentication URI: "sip:sip.example.com:5060 > <http://sip.example.com:5060>" > Digest Authentication Response: > "ab717ce439c666e9b5651d0dc74dff9a" > CNonce Value: "MzrTCxYCoCPxZ91a" > Nonce Count: 00000001 > QOP: > Content-Length: 0 > > > > -- > > David Cunningham, Voisonics Limited > http://voisonics.com/ > USA: +1 213 221 1092 > New Zealand: +64 (0)28 2558 3782 > > > > -- > David Cunningham, Voisonics Limited > http://voisonics.com/ > USA: +1 213 221 1092 > New Zealand: +64 (0)28 2558 3782 > > __________________________________________________________ > Kamailio - Users Mailing List - Non Commercial Discussions -- > [email protected] > To unsubscribe send an email to [email protected] > Important: keep the mailing list in the recipients, do not reply only to the > sender! -- Daniel-Constantin Mierla (@ asipto.com) twitter.com/miconda -- linkedin.com/in/miconda Kamailio Consultancy, Training and Development Services -- asipto.com Kamailio Advanced Training, Dec 1-4, 2025 -- asipto.com
__________________________________________________________ Kamailio - Users Mailing List - Non Commercial Discussions -- [email protected] To unsubscribe send an email to [email protected] Important: keep the mailing list in the recipients, do not reply only to the sender!
