[SR-Users] linphone & presence_xml ERROR
Pali Rohár
pali.rohar at gmail.com
Sun Jul 1 10:17:41 CEST 2018
I reported this problem to linphone mailing list:
http://lists.nongnu.org/archive/html/linphone-users/2018-06/msg00021.html
On Wednesday 27 June 2018 10:39:10 Daniel-Constantin Mierla wrote:
> Hello,
>
> thanks for sharing, might help others facing same issue!
>
> Cheers,
> Daniel
>
>
> On 26.06.18 18:43, Pali Rohár wrote:
> > Hi! Thank you very much for hints. I was able to fix those invalid XML
> > bodies produced by Linphone by following kamailio.cfg code:
> >
> > # Fix invalid XML produced by Linphone
> > if(has_body("application/pidf+xml") && search_hf("User-Agent", "Linphone", "a")) {
> > subst_body('/(<presence.*entity=".*)<(sip:.*)>(".*>)/\1<\2>\3/g');
> > subst_body('/(<contact[^>]*>.*)<(sip:.*)>(.*<\/contact>)/\1<\2>\3/g');
> > msg_apply_changes();
> > }
> >
> > I put it into "route[PRESENCE]" section inside "if(is_method("PUBLISH")) {".
> >
> > It is a hack, but it is working fine. Linphone now can show online
> > status correctly.
> >
> > On Tuesday 26 June 2018 10:45:07 Daniel-Constantin Mierla wrote:
> >> Hello,
> >>
> >> if you want to try to fix it inside kamailio.cfg, look at the
> >> subst/replace functions from textops module and once those operations
> >> are done, do msg_apply_changes() from textopsx module.
> >>
> >> Cheers,
> >> Daniel
> >>
> >>
> >> On 25.06.18 16:03, Pali Rohár wrote:
> >>> Ah, seems you are right. It is invalid XML. I have not spotted that when
> >>> doing packet dumps.
> >>>
> >>> So I would report bug to linphone project. I (as a user) have no control
> >>> on what linphone SIP client send to server...
> >>>
> >>> It looks like that linphone forgot to encode entity="..." and content of
> >>> <contact>. Is there any way to "fix" these two problems in kamailio
> >>> server? Probably as doing some replace filter in kamailio config file
> >>> for incoming packets?
> >>>
> >>> Because current version of linphone is widely used and it would take
> >>> time if linphone fixes this issue and users updates current broken
> >>> version.
> >>>
> >>> On Monday 25 June 2018 15:47:19 Daniel-Constantin Mierla wrote:
> >>>> Hello,
> >>>>
> >>>> the error is printed because the parsing of the XML body in PUBLISH
> >>>> fails -- an invalid XML document. Quickly looking at it:
> >>>>
> >>>>
> >>>> <?xml version="1.0" encoding="UTF-8"?>
> >>>> <presence xmlns="urn:ietf:params:xml:ns:pidf"
> >>>> xmlns:dm="urn:ietf:params:xml:ns:pidf:data-model"
> >>>> xmlns:rpid="urn:ietf:params:xml:ns:pidf:rpid" entity="User <sip:USER at HOST>">
> >>>> <tuple id="sg89ae">
> >>>> <status><basic>closed</basic></status>
> >>>> <contact priority="0.8">User <sip:USER at HOST></contact>
> >>>> </tuple>
> >>>> </presence>
> >>>>
> >>>>
> >>>> the issue likely is the content of the <contact>...</contact>, it has
> >>>> <sip:...> which is an opening tag from XML point of view. Either encode
> >>>> < and > there, or put the sip address without them.
> >>>>
> >>>> Cheers,
> >>>> Daniel
> >>>>
> >>>> On 23.06.18 22:21, Pali Rohár wrote:
> >>>>> Hi!
> >>>>>
> >>>>> I'm using linphone 3.6.1 as SIP client and Kamailio 4.4.4 as proxy
> >>>>> server and registrar.
> >>>>>
> >>>>> And every time I try to change online status (presence) in linphone
> >>>>> client, I see following error messages in kamailio server log:
> >>>>>
> >>>>> ERROR: presence_xml [add_events.c:167]: xml_publ_handl(): bad body format
> >>>>> ERROR: presence [publish.c:443]: handle_publish(): in event specific publish handling
> >>>>> ERROR: tm [t_reply.c:533]: _reply_light(): ERROR: _reply_light: can't generate 500 reply when a final 415 was sent out
> >>>>> ERROR: sl [sl.c:269]: send_reply(): failed to reply stateful (tm)
> >>>>> ERROR: presence [utils_func.c:146]: send_error_reply(): sending 500 Server Internal Error reply
> >>>>> ERROR: presence [publish.c:492]: handle_publish(): failed to send error reply
> >>>>>
> >>>>> So it looks like kamailio is not able to parse presence change which is
> >>>>> linphone doing. I captured traffic via tcpdump what linphone sends:
> >>>>>
> >>>>> 21:58:58.704792 IP (tos 0x68, ttl 64, id 64109, offset 0, flags [DF], proto UDP (17), length 32)
> >>>>> LINPHONE_IP_ADDRESS.5060 > KAMAILIO_IP_ADDRESS.5060: SIP
> >>>>> 21:58:58.704919 IP (tos 0x68, ttl 64, id 64110, offset 0, flags [DF], proto UDP (17), length 752)
> >>>>> LINPHONE_IP_ADDRESS.5060 > KAMAILIO_IP_ADDRESS.5060: SIP, length: 724
> >>>>> PUBLISH sip:USER at HOST SIP/2.0
> >>>>> Via: SIP/2.0/UDP LINPHONE_IP_ADDRESS:5060;rport;branch=z9hG4bK2049418743
> >>>>> From: User <sip:USER at HOST>;tag=184282924
> >>>>> To: User <sip:USER at HOST>
> >>>>> Call-ID: 1435474953
> >>>>> CSeq: 26 PUBLISH
> >>>>> Content-Type: application/pidf+xml
> >>>>> Max-Forwards: 70
> >>>>> User-Agent: Linphone/3.6.1 (eXosip2/4.1.0)
> >>>>> Expires: 600
> >>>>> Event: presence
> >>>>> Content-Length: 353
> >>>>>
> >>>>> <?xml version="1.0" encoding="UTF-8"?>
> >>>>> <presence xmlns="urn:ietf:params:xml:ns:pidf" xmlns:dm="urn:ietf:params:xml:ns:pidf:data-model" xmlns:rpid="urn:ietf:params:xml:ns:pidf:rpid" entity="User <sip:USER at HOST>">
> >>>>> <tuple id="sg89ae">
> >>>>> <status><basic>closed</basic></status>
> >>>>> <contact priority="0.8">User <sip:USER at HOST></contact>
> >>>>> </tuple>
> >>>>> </presence>
> >>>>> 21:58:58.710097 IP (tos 0x10, ttl 53, id 10255, offset 0, flags [none], proto UDP (17), length 473)
> >>>>> KAMAILIO_IP_ADDRESS.5060 > LINPHONE_IP_ADDRESS.5060: SIP, length: 445
> >>>>> SIP/2.0 407 Proxy Authentication Required
> >>>>> Via: SIP/2.0/UDP LINPHONE_IP_ADDRESS:5060;rport=5060;branch=z9hG4bK2049418743;received=EXTERNAL_IP_ADDRESS
> >>>>> From: User <sip:USER at HOST>;tag=184282924
> >>>>> To: User <sip:USER at HOST>;tag=515cb47c4c34ffa85b598d6b25676122.744d
> >>>>> Call-ID: 1435474953
> >>>>> CSeq: 26 PUBLISH
> >>>>> Proxy-Authenticate: Digest realm="HOST", nonce="NONCE"
> >>>>> Server: kamailio (4.4.4 (x86_64/linux))
> >>>>> Content-Length: 0
> >>>>>
> >>>>> 21:58:58.718147 IP (tos 0x68, ttl 64, id 64111, offset 0, flags [DF], proto UDP (17), length 940)
> >>>>> LINPHONE_IP_ADDRESS.5060 > KAMAILIO_IP_ADDRESS.5060: SIP, length: 912
> >>>>> PUBLISH sip:USER at HOST SIP/2.0
> >>>>> Via: SIP/2.0/UDP LINPHONE_IP_ADDRESS:5060;rport;branch=z9hG4bK1165141043
> >>>>> From: User <sip:USER at HOST>;tag=184282924
> >>>>> To: User <sip:USER at HOST>
> >>>>> Call-ID: 1435474953
> >>>>> CSeq: 27 PUBLISH
> >>>>> Proxy-Authorization: Digest username="USER", realm="HOST", nonce="NONCE", uri="sip:USER at HOST", response="RESP", algorithm=MD5
> >>>>> Content-Type: application/pidf+xml
> >>>>> Max-Forwards: 70
> >>>>> User-Agent: Linphone/3.6.1 (eXosip2/4.1.0)
> >>>>> Expires: 600
> >>>>> Event: presence
> >>>>> Content-Length: 353
> >>>>>
> >>>>> <?xml version="1.0" encoding="UTF-8"?>
> >>>>> <presence xmlns="urn:ietf:params:xml:ns:pidf" xmlns:dm="urn:ietf:params:xml:ns:pidf:data-model" xmlns:rpid="urn:ietf:params:xml:ns:pidf:rpid" entity="User <sip:USER at HOST>">
> >>>>> <tuple id="sg89ae">
> >>>>> <status><basic>closed</basic></status>
> >>>>> <contact priority="0.8">User <sip:USER at HOST></contact>
> >>>>> </tuple>
> >>>>> </presence>
> >>>>>
> >>>>> 21:58:58.781668 IP (tos 0x10, ttl 53, id 10259, offset 0, flags [none], proto UDP (17), length 380)
> >>>>> KAMAILIO_IP_ADDRESS.5060 > LINPHONE_IP_ADDRESS.5060: SIP, length: 352
> >>>>> SIP/2.0 415 Unsupported media type
> >>>>> Via: SIP/2.0/UDP LINPHONE_IP_ADDRESS:5060;rport=5060;branch=z9hG4bK1165141043;received=EXTERNAL_IP_ADDRESS
> >>>>> From: User <sip:USER at HOST>;tag=184282924
> >>>>> To: User <sip:USER at HOST>;tag=97d8e785fdf42bf9622a64c13c504961-3901
> >>>>> Call-ID: 1435474953
> >>>>> CSeq: 27 PUBLISH
> >>>>> Server: kamailio (4.4.4 (x86_64/linux))
> >>>>> Content-Length: 0
> >>>>>
> >>>>> I replaced ip addresses in packets by KAMAILIO_IP_ADDRESS,
> >>>>> LINPHONE_IP_ADDRESS and EXTERNAL_IP_ADDRESS strings and also SIP account
> >>>>> by USER at HOST. Maybe it helps you.
> >>>>>
> >>>>> Any idea why kamailio refuse presence update and reports those error
> >>>>> into error log?
> >>>>>
> >>>>> Or is there any special setting which is needed for linphone or other
> >>>>> SIP clients for online status / presence support?
> >>>>>
> >>>>>
> >>>>>
> >>>>> _______________________________________________
> >>>>> Kamailio (SER) - Users Mailing List
> >>>>> sr-users at lists.kamailio.org
> >>>>> https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
> >
> >
> > _______________________________________________
> > Kamailio (SER) - Users Mailing List
> > sr-users at lists.kamailio.org
> > https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>
--
Pali Rohár
pali.rohar at gmail.com
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