[SR-Users] SIP NOTIFY problem in "presence_dialoginfo" module?
Daniel-Constantin Mierla
miconda at gmail.com
Wed Mar 30 16:59:23 CEST 2011
Hello,
On 3/30/11 3:01 PM, Klaus Feichtinger wrote:
> Hello list,
>
> I have a special situation in which string characters of the "root-line"
> of the notify-body are overwritten by Kamailio. In detail: the root-line
> of the NOTIFY message sent to the subscriber looks like:
> <dialog-info xmlns="urn:ietf:params:xml:ns:dialog-info" version="1" ll"
> entity="sip:117090 at 10.16.10.99"> instead of
> <dialog-info xmlns="urn:ietf:params:xml:ns:dialog-info" version="1"
> state="full" entity="sip:117090 at 10.16.10.99"> In other words: the string
> state="full" is overwritten by space characters.
Is it by space or by the versios="1"? Maybe the email body encoding ate
the spaces, above looks like one space before 'll"'.
Cheers,
Daniel
> Therefore the message
> is no longer "valid" and the parser of the subscriber-user agent has
> problems....
>
> The exact scenario in my use case is, that user agents can subscribe the
> events "presence" and "dialog" on Kamailio. The information about
> presence and dialog-states is published to Kamailio by PUBLISH messages
> from the user agents themselves. Kamailio does not have to generate this
> information itself. In the following lines I have an excerpt of the
> signalisation: 1) initial subscription of party A, 2) the responded
> notification (without body) 3) subscription of party B 4) the responded
> notification (with body) 5) a publish message of the subscribed party B
> with actual dialog information and 6) the notification with body to the
> subscriber A.
>
>
> 1) Initial SUBSCRIBE message of party A:
> ======================================SUBSCRIBE sip:117090 at 10.16.10.99
> SIP/2.0 Via: SIP/2.0/UDP 10.16.10.93:5060;rport;branch=z9hG4bK1411449981
> From:<sip:117093 at 10.16.10.99>;tag=2453899634-24035392-1301468026894 To:
> <sip:117090 at 10.16.10.99>
> Call-ID: 2442490492-24035392-1301468026894 at 10.16.10.93
> CSeq: 20 SUBSCRIBE
> Contact:<sip:117093 at 10.16.10.93:5060>
> Max-Forwards: 70
> User-Agent: SipTapi
> Expires: 3600
> Event: dialog
> Content-Length: 0
>
> 2) Responded NOTIFY message from Kamailio:
> ========================================NOTIFY
> sip:117093 at 10.16.10.93:5060 SIP/2.0 Via: SIP/2.0/UDP
> 10.16.10.99;branch=z9hG4bK7cc7.08e060b6000000000000000000000000.0
> To: sip:117093 at 10.16.10.99;tag=2453899634-24035392-1301468026894
> From: sip:117090 at 10.16.10.99;tag=a23c71953194c2c72e41c4d20e4f7127-86e1
> CSeq: 1 NOTIFY
> Call-ID: 2442490492-24035392-1301468026894 at 10.16.10.93
> Content-Length: 0
> User-Agent: kamailio (3.1.2 (i386/linux))
> Max-Forwards: 70
> Event: dialog
> Contact:<sip:10.16.10.99:5060>
> Subscription-State: active;expires=3670
>
>
> 3) Initial SUBSCRIBE message of party B:
> ======================================SUBSCRIBE sip:117093 at 10.16.10.99
> SIP/2.0 Via: SIP/2.0/UDP 10.16.10.90:5060;rport;branch=z9hG4bK4016956575
> From:<sip:117090 at 10.16.10.99>;tag=2605346227-26329880-1301468174702 To:
> <sip:117093 at 10.16.10.99>
> Call-ID: 2982039389-26329880-1301468174702 at 10.16.10.90
> CSeq: 20 SUBSCRIBE
> Contact:<sip:117090 at 10.16.10.90:5060>
> Max-Forwards: 70
> User-Agent: SipTapi
> Expires: 3600
> Event: dialog
> Content-Length: 0
>
> 4) Responded NOTIFY message from Kamailio (with version number
> "00000000000"!!!!):
> ==============================================================================NOTIFY
> sip:117090 at 10.16.10.90:5060 SIP/2.0 Via: SIP/2.0/UDP
> 10.16.10.99;branch=z9hG4bK10e8.31cb2284000000000000000000000000.0
> To: sip:117090 at 10.16.10.99;tag=2605346227-26329880-1301468174702
> From: sip:117093 at 10.16.10.99;tag=a23c71953194c2c72e41c4d20e4f7127-5f56
> CSeq: 1 NOTIFY
> Call-ID: 2982039389-26329880-1301468174702 at 10.16.10.90
> Content-Length: 593
> User-Agent: kamailio (3.1.2 (i386/linux))
> Max-Forwards: 70
> Event: dialog
> Contact:<sip:10.16.10.99:5060>
> Subscription-State: active;expires=3670
> Content-Type: application/dialog-info+xml
>
> <?xml version="1.0"?>
> <dialog-info xmlns="urn:ietf:params:xml:ns:dialog-info"
> version="00000000000" state="full" entity="117093 at 10.16.10.99">
> <dialog id="3375446242-26591296-1301467877329 at 10.16.10.93"
> call-id="3375446242-26591296-1301467877329 at 10.16.10.93"
> direction="initiator">
> <state>terminated</state>
> <remote>
> <identity>sip:019992116002 at 10.16.10.99</identity>
> <target uri="sip:019992116002 at 10.16.10.99"/>
> </remote>
> <local>
> <identity>sip:117093 at 10.16.10.99</identity>
> <target uri="sip:117093 at 10.16.10.99"/>
> </local>
> </dialog>
> </dialog-info>
>
> 5) The subscribed party is sending a PUBLISH message with following
> information:
> ============================================================================PUBLISH
> sip:117090 at 10.16.10.99 SIP/2.0 Via: SIP/2.0/UDP
> 10.16.10.90:5060;rport;branch=z9hG4bK348084694
> From:<sip:117090 at 10.16.10.99>;tag=3644648667-26329880-1301468223499 To:
> <sip:117090 at 10.16.10.99>
> Call-ID: 332031778-26329880-1301468223499 at 10.16.10.90
> CSeq: 20 PUBLISH
> Max-Forwards: 70
> User-Agent: SipTapi
> Content-Disposition: render;handling=required
> Expires: 3600
> Event: dialog
> Content-Type: application/dialog-info+xml
> Content-Length: 592
>
> <?xml version="1.0"?>
> <dialog-info xmlns="urn:ietf:params:xml:ns:dialog-info" version="4"
> state="full" entity="sip:117090 at 10.16.10.99">
> <dialog id="2769397361-26329880-1301468223108 at 10.16.10.90"
> call-id="2769397361-26329880-1301468223108 at 10.16.10.90"
> direction="initiator">
> <state>confirmed</state>
> <remote>
> <identity><sip:116001 at 10.16.10.99></identity>
> <target uri="<sip:116001 at 10.16.10.99>"/>
> </remote>
> <local>
> <identity>sip:117090 at 10.16.10.99</identity>
> <target uri="sip:117090 at 10.16.10.99"/>
> </local>
> </dialog>
> </dialog-info>
>
>
> 6) Status informative NOTIFY message from Kamailio (built from the
> PUBLISH message above - with correct version but string overwriting!!!):
> =======================================================================================================================================NOTIFY
> sip:117093 at 10.16.10.93:5060 SIP/2.0 Via: SIP/2.0/UDP
> 10.16.10.99;branch=z9hG4bK4cc7.faa8dc87000000000000000000000000.0
> To: sip:117093 at 10.16.10.99;tag=2453899634-24035392-1301468026894
> From: sip:117090 at 10.16.10.99;tag=a23c71953194c2c72e41c4d20e4f7127-86e1
> CSeq: 2 NOTIFY
> Call-ID: 2442490492-24035392-1301468026894 at 10.16.10.93
> Content-Length: 592
> User-Agent: kamailio (3.1.2 (i386/linux))
> Max-Forwards: 70
> Event: dialog
> Contact:<sip:10.16.10.99:5060>
> Subscription-State: active;expires=3570
> Content-Type: application/dialog-info+xml
>
> <?xml version="1.0"?>
> <dialog-info xmlns="urn:ietf:params:xml:ns:dialog-info" version="1" ll"
> entity="sip:117090 at 10.16.10.99">
> <dialog id="2769397361-26329880-1301468223108 at 10.16.10.90"
> call-id="2769397361-26329880-1301468223108 at 10.16.10.90"
> direction="initiator">
> <state>confirmed</state>
> <remote>
> <identity><sip:116001 at 10.16.10.99></identity>
> <target uri="<sip:116001 at 10.16.10.99>"/>
> </remote>
> <local>
> <identity>sip:117090 at 10.16.10.99</identity>
> <target uri="sip:117090 at 10.16.10.99"/>
> </local>
> </dialog>
> </dialog-info>
>
>
>
> Debug information of Kamailio and information in the source code show
> that the version number "00000000000" is a placeholder only, which
> should be replaced with a valid version number. However, it seems that
> there is a problem in handling these strings. The version number is
> replaced, but in case that the version id is only one character long,
> ten space characters are inserted- overwriting other information......
>
>
> Can anybody comment this problem? Is this a bug of the
> presence_dialoginfo- or another module?
>
> Thanks in advance!
>
> Regards,
> Klaus
>
> P.S. additional information from source code an debug output of
> kamailio:
>
> notify_body.c:
> [...]
> /* The version must be increased for each new document and is a 32bit
> int.
> As the version is different for each watcher, we can not set here the
> correct value. Thus, we just put here a placeholder which will be
> replaced by the correct value in the aux_body_processing callback.
> Thus we have CPU intensive XML aggregation only once and can use
> quick search&replace in the per-watcher aux_body_processing callback.
> We use 11 chracters as an signed int (although RFC says unsigned int
> we use signed int as presence module stores "version" in DB as
> signed int) has max. 10 characters + 1 character for the sign
> */
> [...]
>
> Debug information from Kamailio:
> Ad 4)
> SipSrv1 /usr/sbin/kamailio[26764]: DEBUG: presence_dialoginfo
> [notify_body.c:67]: [pres_user]=117093 [pres_domain]= 10.16.10.99, [n]=1
> SipSrv1 /usr/sbin/kamailio[26764]: DEBUG: presence_dialoginfo
> [notify_body.c:107]: [pres_user]=117093 [pres_domain]= 10.16.10.99,
> [n]=1 SipSrv1 /usr/sbin/kamailio[26764]: DEBUG: presence_dialoginfo
> [notify_body.c:199]: node type: Element, name: dialog
> SipSrv1 /usr/sbin/kamailio[26764]: DEBUG: presence_dialoginfo
> [notify_body.c:73]: [n_body]=0x835fe54
> SipSrv1 /usr/sbin/kamailio[26764]: DEBUG: presence_dialoginfo
> [notify_body.c:76]: [*n_body]=<?xml version="1.0"?>#012<dialog-info
> xmlns="urn:ietf:params:xml:ns:dialog-info" version="00000000000"
> state="full" entity="117093 at 10.16.10.99">#012<dialog
> id="6b1de4df-6c9ce978 at 10.16.10.203"
> call-id="6b1de4df-6c9ce978 at 10.16.10.203" direction="recipient">#012
> <state>confirmed</state>#012<remote>#012
> <identity>sip:116001 at 10.16.10.99</identity>#012<target
> uri="sip:116001 at 10.16.10.99"/>#012</remote>#012<local>#012
> <identity>sip:117093 at 10.16.10.99</identity>#012<target
> uri="sip:117093 at 10.16.10.99"/>#012</local>#012
> </dialog>#012</dialog-info>#012
> SipSrv1 /usr/sbin/kamailio[26764]: DEBUG: presence_dialoginfo
> [notify_body.c:328]: replace version with "1"
> SipSrv1 /usr/sbin/kamailio[26764]: DEBUG: presence [notify.c:1461]:
> dialog info:
> SipSrv1 /usr/sbin/kamailio[26764]: DEBUG: presence [notify.c:122]:
> #012#011[pres_uri]=
> sip:117093 at 10.16.10.99#012#011[to_user]117093#011[to_domain]=
> 10.16.10.99#012#011[w_user]=
> 117090#011[w_domain]10.16.10.99#012#011[event]= dialog#012#011[status]=
> active#012#011[expires]3519#012#011[callid]3119346140-8635704-1301477522967 at 10.16.10.90#011[local_cseq]=1#012#011[to_tag
> ]=
> a23c71953194c2c72e41c4d20e4f7127-7529#011[from_tag]2282475328-8635704-1301477522967#012#011[contact]sip:117090 at 10.16.10.90:5060#011[record_route]SipSrv1
> /usr/sbin/kamailio[26764]: DEBUG: presence [notify.c:234]: expires 3519
> SipSrv1 /usr/sbin/kamailio[26764]: DEBUG: presence [notify.c:1555]:
> headers:#012Max-Forwards: 70#015#012Event: dialog#015#012Contact:
> <sip:10.16.10.99:5060>#015#012Subscription-State:
> active;expires=3570#015#012Content-Type:
> application/dialog-info+xml#015#012 SipSrv1 /usr/sbin/kamailio[26764]:
> DEBUG: presence [notify.c:940]: CONTACT sip:117090 at 10.16.10.90:5060
> SipSrv1 /usr/sbin/kamailio[26764]: DEBUG:<core> [socket_info.c:501]:
> grep_sock_info - checking if host==us: 11==11&& [10.16.10.99]
> =[10.16.10.99] SipSrv1 /usr/sbin/kamailio[26764]: DEBUG:<core>
> [socket_info.c:504]: grep_sock_info - checking if port 5060 matches port
> 5060
> SipSrv1 /usr/sbin/kamailio[26764]: DEBUG: presence [notify.c:1729]:
> ==22/6/37 SipSrv1 /usr/sbin/kamailio[26764]: DEBUG: tm [uac.c:240]:
> DEBUG:tm:t_uac: next_hop=<sip:117090 at 10.16.10.90:5060>
> SipSrv1 /usr/sbin/kamailio[26764]: DEBUG: tm [uac.c:181]: DEBUG:
> dlg2hash: 27355
> SipSrv1 /usr/sbin/kamailio[26764]: DEBUG:<core> [usr_avp.c:646]:
> DEBUG:destroy_avp_list: destroying list (nil)
> SipSrv1 /usr/sbin/kamailio[26764]: DEBUG:<core> [usr_avp.c:646]:
> DEBUG:destroy_avp_list: destroying list (nil)
> SipSrv1 /usr/sbin/kamailio[26764]: DEBUG:<core> [usr_avp.c:646]:
> DEBUG:destroy_avp_list: destroying list (nil)
> SipSrv1 /usr/sbin/kamailio[26764]: DEBUG:<core> [usr_avp.c:646]:
> DEBUG:destroy_avp_list: destroying list (nil)
> SipSrv1 /usr/sbin/kamailio[26764]: DEBUG:<core> [usr_avp.c:646]:
> DEBUG:destroy_avp_list: destroying list (nil)
> SipSrv1 /usr/sbin/kamailio[26764]: DEBUG:<core> [usr_avp.c:646]:
> DEBUG:destroy_avp_list: destroying list (nil)
> SipSrv1 /usr/sbin/kamailio[26764]: INFO: presence [notify.c:1586]:
> NOTIFY sip:117090 at 10.16.10.99 via sip:117090 at 10.16.10.90:5060 on behalf
> of sip:117093 at 10.16.10.99 for event dialog
>
>
> Ad 6)
> SipSrv1 /usr/sbin/kamailio[26764]: DEBUG: presence_dialoginfo
> [notify_body.c:67]: [pres_user]=117093 [pres_domain]= 10.16.10.99, [n]=1
> SipSrv1 /usr/sbin/kamailio[26764]: DEBUG: presence_dialoginfo
> [notify_body.c:107]: [pres_user]=117093 [pres_domain]= 10.16.10.99,
> [n]=1 SipSrv1 /usr/sbin/kamailio[26764]: DEBUG: presence_dialoginfo
> [notify_body.c:199]: node type: Element, name: dialog
> SipSrv1 /usr/sbin/kamailio[26764]: DEBUG: presence_dialoginfo
> [notify_body.c:73]: [n_body]=0x835fcb0
> SipSrv1 /usr/sbin/kamailio[26764]: DEBUG: presence_dialoginfo
> [notify_body.c:76]: [*n_body]=<?xml version="1.0"?>#012<dialog-info
> xmlns="urn:ietf:params:xml:ns:dialog-info" version="00000000000"
> state="full" entity="117093 at 10.16.10.99">#012<dialog
> id="6b1de4df-6c9ce978 at 10.16.10.203"
> call-id="6b1de4df-6c9ce978 at 10.16.10.203" direction="recipient">#012
> <state>terminated</state>#012<remote>#012
> <identity>sip:116001 at 10.16.10.99</identity>#012<target
> uri="sip:116001 at 10.16.10.99"/>#012</remote>#012<local>#012
> <identity>sip:117093 at 10.16.10.99</identity>#012<target
> uri="sip:117093 at 10.16.10.99"/>#012</local>#012
> </dialog>#012</dialog-info>#012
> SipSrv1 /usr/sbin/kamailio[26764]: DEBUG: presence_dialoginfo
> [notify_body.c:328]: replace version with "2"
> SipSrv1 /usr/sbin/kamailio[26764]: DEBUG: presence [notify.c:1461]:
> dialog info:
> SipSrv1 /usr/sbin/kamailio[26764]: DEBUG: presence [notify.c:122]:
> #012#011[pres_uri]=
> sip:117093 at 10.16.10.99#012#011[to_user]117093#011[to_domain]=
> 10.16.10.99#012#011[w_user]=
> 117090#011[w_domain]10.16.10.99#012#011[event]= dialog#012#011[status]=
> active#012#011[expires]3242#012#011[callid]3119346140-8635704-1301477522967 at 10.16.10.90#011[local_cseq]=2#012#011[to_tag
> ]=
> a23c71953194c2c72e41c4d20e4f7127-7529#011[from_tag]2282475328-8635704-1301477522967#012#011[contact]sip:117090 at 10.16.10.90:5060#011[record_route]=
> SipSrv1 /usr/sbin/kamailio[26764]: DEBUG: presence [notify.c:234]:
> expires 3242 SipSrv1 /usr/sbin/kamailio[26764]: DEBUG: presence
> [notify.c:1555]: headers:#012Max-Forwards: 70#015#012Event:
> dialog#015#012Contact:
> <sip:10.16.10.99:5060>#015#012Subscription-State:
> active;expires=3270#015#012Content-Type:
> application/dialog-info+xml#015#012 SipSrv1 /usr/sbin/kamailio[26764]:
> DEBUG: presence [notify.c:940]: CONTACT sip:117090 at 10.16.10.90:5060
> SipSrv1 /usr/sbin/kamailio[26764]: DEBUG:<core> [socket_info.c:501]:
> grep_sock_info - checking if host==us: 11==11&& [10.16.10.99]
> =[10.16.10.99] SipSrv1 /usr/sbin/kamailio[26764]: DEBUG:<core>
> [socket_info.c:504]: grep_sock_info - checking if port 5060 matches port
> 5060
> SipSrv1 /usr/sbin/kamailio[26764]: DEBUG: presence [notify.c:1729]:
> ==22/6/37 SipSrv1 /usr/sbin/kamailio[26764]: DEBUG: tm [uac.c:240]:
> DEBUG:tm:t_uac: next_hop=<sip:117090 at 10.16.10.90:5060>
> SipSrv1 /usr/sbin/kamailio[26764]: DEBUG: tm [uac.c:181]: DEBUG:
> dlg2hash: 27356
> SipSrv1 /usr/sbin/kamailio[26764]: DEBUG:<core> [usr_avp.c:646]:
> DEBUG:destroy_avp_list: destroying list (nil)
> SipSrv1 /usr/sbin/kamailio[26764]: DEBUG:<core> [usr_avp.c:646]:
> DEBUG:destroy_avp_list: destroying list (nil)
> SipSrv1 /usr/sbin/kamailio[26764]: DEBUG:<core> [usr_avp.c:646]:
> DEBUG:destroy_avp_list: destroying list (nil)
> SipSrv1 /usr/sbin/kamailio[26764]: DEBUG:<core> [usr_avp.c:646]:
> DEBUG:destroy_avp_list: destroying list (nil)
> SipSrv1 /usr/sbin/kamailio[26764]: DEBUG:<core> [usr_avp.c:646]:
> DEBUG:destroy_avp_list: destroying list (nil)
> SipSrv1 /usr/sbin/kamailio[26764]: DEBUG:<core> [usr_avp.c:646]:
> DEBUG:destroy_avp_list: destroying list (nil)
> SipSrv1 /usr/sbin/kamailio[26764]: INFO: presence [notify.c:1586]:
> NOTIFY sip:117090 at 10.16.10.99 via sip:117090 at 10.16.10.90:5060 on behalf
> of sip:117093 at 10.16.10.99 for event dialog
>
>
>
>
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--
Daniel-Constantin Mierla
http://www.asipto.com
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