[SR-Users] evapi tcp parsing??

Daniel-Constantin Mierla miconda at gmail.com
Sun Oct 11 19:29:47 CEST 2015


Hello,

wondering if you had the time to test and see if the issue has been fixed...

Cheers,
Daniel

On 30/09/15 08:31, Daniel-Constantin Mierla wrote:
> Hello,
>
> thanks for troubleshooting further and pointing to the issue. I pushed
> a patch last night, hopefully fixes it. Try with latest master branch
> and let me know the results.
>
> Cheers,
> Daniel
>
> On 29/09/15 14:15, Jayesh Nambiar wrote:
>> Hi Daniel,
>> Taking a second look at the NGREP Trace I think I can see what is
>> going wrong. The message in the third packet was discarded by Evapi
>> module. If you look at the first two packets carefully, the first
>> packet ends at Dev and the second packet is the continuation of first
>> packet which starts with "iceId". The first two packets are processed
>> perfectly fine.
>> Now the third packet is a new message, but Kamailio is trying to
>> continue the third packet again with the first packet. So even when
>> the third packet starts with '146:' Kamailio considers it to be
>> starting with 'Dev146'. This causes the evapi to discard this message
>> since it does not remain a valid netstring then. Here the three
>> packets that I'm talking about:
>>
>> T 198.24.63.45:48905 <http://198.24.63.45:48905> -> 198.24.63.39:3927 <http://198.24.63.39:3927> [A]
>>   146:{"event":"REGISTER","tindex":"43213","tlabel":"220429340","PhoneNumber":"11151","DeviceId":"abcd1234abcd1234","CallId":"10932-15480 at 198.24.63.39 <mailto:10932-15480 at 198.24.63.39>"},146:{"event":"REGISTER","tindex":"52174","tlabel":"708781916","PhoneNumber":"11150","DeviceId":"abcd1234abcd1234","CallId":"10933-15480 at 198.24.63.39 <mailto:10933-15480 at 198.24.63.39>"},147:{"event":"REGISTER","tindex":"34251","tlabel":"1354642017","PhoneNumber":"11153","DeviceId":"abcd1234abcd1234","CallId":"10935-15480 at 198.24.63.39 <mailto:10935-15480 at 198.24.63.39>"},146:{"event":"REGISTER","tindex":"7366","tlabel":"1368396808","PhoneNumber":"11154","DeviceId":"abcd1234abcd1234","CallId":"10936-15480 at 198.24.63.39 <mailto:10936-15480 at 198.24.63.39>"},146:{"event":"REGISTER","tindex":"25289","tlabel":"119788881","PhoneNumber":"11152","DeviceId":"abcd1234abcd1234","C
>> allId":"10934-15480 at 198.24.63.39 <mailto:10934-15480 at 198.24.63.39>"},146:{"event":"REGISTER","tindex":"16327","tlabel":"971937029","PhoneNumber":"11155","DeviceId":"abcd1234abcd1234","CallId":"10937-15480 at 198.24.63.39 <mailto:10937-15480 at 198.24.63.39>"},146:{"event":"REGISTER","tindex":"22242","tlabel":"609737074","PhoneNumber":"11156","DeviceId":"abcd1234abcd1234","CallId":"10938-15480 at 198.24.63.39 <mailto:10938-15480 at 198.24.63.39>"},146:{"event":"REGISTER","tindex":"10720","tlabel":"930036340","PhoneNumber":"11157","DeviceId":"abcd1234abcd1234","CallId":"10939-15480 at 198.24.63.39 <mailto:10939-15480 at 198.24.63.39>"},146:{"event":"REGISTER","tindex":"61133","tlabel":"450961398","PhoneNumber":"11158","DeviceId":"abcd1234abcd1234","CallId":"10940-15480 at 198.24.63.39 <mailto:10940-15480 at 198.24.63.39>"},146:{"event":"R
>> EGISTER","tindex":"43210","tlabel":"639090568","PhoneNumber":"11160","Dev                                                                                                         
>>
>> T 198.24.63.45:48905 <http://198.24.63.45:48905> -> 198.24.63.39:3927 <http://198.24.63.39:3927> [AP]
>>   iceId":"abcd1234abcd1234","CallId":"10942-15480 at 198.24.63.39 <mailto:10942-15480 at 198.24.63.39>"},146:{"event":"REGISTER","tindex":"4559","tlabel":"1701553747","PhoneNumber":"11159","DeviceId":"abcd1234abcd1234","CallId":"10941-15480 at 198.24.63.39 <mailto:10941-15480 at 198.24.63.39>"},
>>                                                                                                                                                                                                
>> T 198.24.63.45:48905 <http://198.24.63.45:48905> -> 198.24.63.39:3927 <http://198.24.63.39:3927> [AP]
>>   146:{"event":"REGISTER","tindex":"52171","tlabel":"748030241","PhoneNumber":"11161","DeviceId":"abcd1234abcd1234","CallId":"10943-15480 at 198.24.63.39 <mailto:10943-15480 at 198.24.63.39>"},
>>
>> On Tue, Sep 29, 2015 at 4:43 PM Jayesh Nambiar <jayesh1017 at gmail.com
>> <mailto:jayesh1017 at gmail.com>> wrote:
>>
>>     Hi Daniel:
>>     I did a new test where I stopped as soon as I saw one message
>>     that got discarded. Basically the following message got discarded:
>>     {"event":"REGISTER","tindex":"52171","tlabel":"748030241","PhoneNumber":"11161","DeviceId":"abcd1234abcd1234","CallId":"10943-15480 at 198.24.63.39"}
>>     The CallId parameter in the above json is auto incremented, so I
>>     tried gathering logs for messages with following CallIds:
>>     "CallId":"10940-15480 at 198.24.63.39 <mailto:10940-15480 at 198.24.63.39>"
>>     "CallId":"10941-15480 at 198.24.63.39 <mailto:10941-15480 at 198.24.63.39>"
>>     "CallId":"10942-15480 at 198.24.63.39 <mailto:10942-15480 at 198.24.63.39>"
>>     "CallId":"10943-15480 at 198.24.63.39 <mailto:10943-15480 at 198.24.63.39>"
>>     "CallId":"10944-15480 at 198.24.63.39 <mailto:10944-15480 at 198.24.63.39>"
>>     "CallId":"10945-15480 at 198.24.63.39 <mailto:10945-15480 at 198.24.63.39>"
>>
>>     And the message with CallID "CallId":"10943-15480 at 198.24.63.39
>>     <http://198.24.63.39>" got discarded.
>>
>>     Here's the bunch of kamailio logs printed by the evapi module:
>>     *Logs for processed messages just before the discarded message:*
>>     DEBUG: evapi [evapi_dispatch.c:492]: evapi_recv_notify():
>>     received [0x7f43da494ad0]
>>     [146:{"event":"REGISTER","tindex":"61133","tlabel":"450961398","PhoneNumber":"11158","DeviceId":"abcd1234abcd1234","CallId":"10940-15480 at 198.24.63.39"},]
>>     (151)
>>
>>     NOTICE: evapi_recv_client(): {0} [198.24.63.45:48905
>>     <http://198.24.63.45:48905>] - received
>>     [147:{"event":"REGISTER","tindex":"25291","tlabel":"2047024302","PhoneNumber":"11132","DeviceId":"abcd1234abcd1234","CallId":"10914-15480 at 198.24.63.39"},146:{"event":"REGISTER","tindex":"61136","tlabel":"839735223","PhoneNumber":"11148","DeviceId":"abcd1234abcd1234","CallId":"10930-15480 at 198.24.63.39"},143:{"event":"REGISTER","tindex":"4562","tlabel":"6586867","PhoneNumber":"11149","DeviceId":"abcd1234abcd1234","CallId":"10931-15480 at 198.24.63.39"},146:{"event":"REGISTER","tindex":"43213","tlabel":"220429340","PhoneNumber":"11151","DeviceId":"abcd1234abcd1234","CallId":"10932-15480 at 198.24.63.39"},146:{"event":"REGISTER","tindex":"52174","tlabel":"708781916","PhoneNumber":"11150","DeviceId":"abcd1234abcd1234","CallId":"10933-15480 at 198.24.63.39"},147:{"event":"REGISTER","tindex":"34251","tlabel":"1354642017","PhoneNumber":"11153","DeviceId":"abcd1234abcd1234","CallId":"10935-15480 at 198.24.63.39"},146:{"event":"REGISTER","tindex":"7366","tlabel":"1368396808","PhoneNumber":"11154","DeviceId":"abcd1234abcd1234","CallId":"10936-15480 at 198.24.63.39"},146:{"event":"REGISTER","tindex":"25289","tlabel":"119788881","PhoneNumber":"11152","DeviceId":"abcd1234abcd1234","CallId":"10934-15480 at 198.24.63.39"},146:{"event":"REGISTER","tindex":"16327","tlabel":"971937029","PhoneNumber":"11155","DeviceId":"abcd1234abcd1234","CallId":"10937-15480 at 198.24.63.39"},146:{"event":"REGISTER","tindex":"22242","tlabel":"609737074","PhoneNumber":"11156","DeviceId":"abcd1234abcd1234","CallId":"10938-15480 at 198.24.63.39"},146:{"event":"REGISTER","tindex":"10720","tlabel":"930036340","PhoneNumber":"11157","DeviceId":"abcd1234abcd1234","CallId":"10939-15480 at 198.24.63.39"},146:{"event":"REGISTER","tindex":"61133","tlabel":"450961398","PhoneNumber":"11158","DeviceId":"abcd1234abcd1234","CallId":"10940-15480 at 198.24.63.39"},146:{"event":"REGISTER","tindex":"43210","tlabel":"639090568","PhoneNumber":"11160","Dev]
>>     (1899) (0)
>>
>>
>>     evapi_recv_client(): executing event route for frame:
>>     [{"event":"REGISTER","tindex":"61133","tlabel":"450961398","PhoneNumber":"11158","DeviceId":"abcd1234abcd1234","CallId":"10940-15480 at 198.24.63.39"}]
>>     (146)
>>
>>     Sep 29 05:35:14 v39 /usr/local/kamailio-dev/sbin/kamailio[15387]:
>>     DEBUG: evapi [evapi_dispatch.c:492]: evapi_recv_notify():
>>     received [0x7f43da4b67e0]
>>     [146:{"event":"REGISTER","tindex":"4559","tlabel":"1701553747","PhoneNumber":"11159","DeviceId":"abcd1234abcd1234","CallId":"10941-15480 at 198.24.63.39"},]
>>     (151)
>>
>>     NOTICE: evapi [evapi_dispatch.c:290]: evapi_recv_client(): {0}
>>     [198.24.63.45:48905 <http://198.24.63.45:48905>] - received
>>     [iceId":"abcd1234abcd1234","CallId":"10942-15480 at 198.24.63.39"},146:{"event":"REGISTER","tindex":"4559","tlabel":"1701553747","PhoneNumber":"11159","DeviceId":"abcd1234abcd1234","CallId":"10941-15480 at 198.24.63.39"},]
>>     (214) (88)
>>
>>     DEBUG: evapi [evapi_dispatch.c:370]: evapi_recv_client():
>>     executing event route for frame:
>>     [{"event":"REGISTER","tindex":"4559","tlabel":"1701553747","PhoneNumber":"11159","DeviceId":"abcd1234abcd1234","CallId":"10941-15480 at 198.24.63.39"}]
>>     (146)
>>
>>     DEBUG: evapi [evapi_dispatch.c:492]: evapi_recv_notify():
>>     received [0x7f43d93c2a70]
>>     [146:{"event":"REGISTER","tindex":"43210","tlabel":"639090568","PhoneNumber":"11160","DeviceId":"abcd1234abcd1234","CallId":"10942-15480 at 198.24.63.39"},]
>>     (151)
>>
>>     DEBUG: evapi [evapi_dispatch.c:370]: evapi_recv_client():
>>     executing event route for frame:
>>     [{"event":"REGISTER","tindex":"43210","tlabel":"639090568","PhoneNumber":"11160","DeviceId":"abcd1234abcd1234","CallId":"10942-15480 at 198.24.63.39"}]
>>     (146)
>>
>>     DEBUG: evapi [evapi_dispatch.c:353]: evapi_recv_client():
>>     residual data
>>     [146:{"event":"REGISTER","tindex":"43210","tlabel":"639090568","PhoneNumber":"11160","Dev]
>>     (88)
>>
>>     DEBUG: evapi [evapi_dispatch.c:361]: evapi_recv_client(): frame
>>     size mismatch the ending char ("):
>>     [{"event":"REGISTER","tindex":"43210","tlabel":"639090568","PhoneNumber":"11160","Dev146:{"event":"REGISTER","tindex":"52171","tlabel":"748030241",]
>>     (146)
>>
>>     *Logs for discarded message:*
>>     DEBUG: evapi [evapi_dispatch.c:492]: evapi_recv_notify():
>>     received [0x7f43da3e69a0]
>>     [146:{"event":"REGISTER","tindex":"52171","tlabel":"748030241","PhoneNumber":"11161","DeviceId":"abcd1234abcd1234","CallId":"10943-15480 at 198.24.63.39"},]
>>     (151)
>>
>>     NOTICE: evapi [evapi_dispatch.c:290]: evapi_recv_client(): {0}
>>     [198.24.63.45:48905 <http://198.24.63.45:48905>] - received
>>     [146:{"event":"REGISTER","tindex":"52171","tlabel":"748030241","PhoneNumber":"11161","DeviceId":"abcd1234abcd1234","CallId":"10943-15480 at 198.24.63.39"},]
>>     (151) (88)
>>
>>     *Logs for messages after the discarded message:*
>>     DEBUG: evapi [evapi_dispatch.c:492]: evapi_recv_notify():
>>     received [0x7f43da3e6aa0]
>>     [146:{"event":"REGISTER","tindex":"25286","tlabel":"809034258","PhoneNumber":"11163","DeviceId":"abcd1234abcd1234","CallId":"10944-15480 at 198.24.63.39"},]
>>     (151)
>>
>>     NOTICE: evapi [evapi_dispatch.c:290]: evapi_recv_client(): {0}
>>     [198.24.63.45:48905 <http://198.24.63.45:48905>] - received
>>     [146:{"event":"REGISTER","tindex":"25286","tlabel":"809034258","PhoneNumber":"11163","DeviceId":"abcd1234abcd1234","CallId":"10944-15480 at 198.24.63.39"},]
>>     (151) (0)
>>
>>     DEBUG: evapi [evapi_dispatch.c:370]: evapi_recv_client():
>>     executing event route for frame:
>>     [{"event":"REGISTER","tindex":"25286","tlabel":"809034258","PhoneNumber":"11163","DeviceId":"abcd1234abcd1234","CallId":"10944-15480 at 198.24.63.39"}]
>>     (146)
>>
>>     DEBUG: evapi [evapi_dispatch.c:492]: evapi_recv_notify():
>>     received [0x7f43d9598778]
>>     [146:{"event":"REGISTER","tindex":"34248","tlabel":"187029249","PhoneNumber":"11162","DeviceId":"abcd1234abcd1234","CallId":"10945-15480 at 198.24.63.39"},]
>>     (151)
>>
>>     NOTICE: evapi [evapi_dispatch.c:290]: evapi_recv_client(): {0}
>>     [198.24.63.45:48905 <http://198.24.63.45:48905>] - received
>>     [146:{"event":"REGISTER","tindex":"34248","tlabel":"187029249","PhoneNumber":"11162","DeviceId":"abcd1234abcd1234","CallId":"10945-15480 at 198.24.63.39"},]
>>     (151) (0)
>>
>>     DEBUG: evapi [evapi_dispatch.c:370]: evapi_recv_client():
>>     executing event route for frame:
>>     [{"event":"REGISTER","tindex":"34248","tlabel":"187029249","PhoneNumber":"11162","DeviceId":"abcd1234abcd1234","CallId":"10945-15480 at 198.24.63.39"}]
>>     (146)
>>
>>     DEBUG: evapi [evapi_dispatch.c:492]: evapi_recv_notify():
>>     received [0x7f43d9598878]
>>     [145:{"event":"REGISTER","tindex":"7363","tlabel":"949153805","PhoneNumber":"11164","DeviceId":"abcd1234abcd1234","CallId":"10946-15480 at 198.24.63.39"},]
>>     (150)
>>
>>     NOTICE: evapi [evapi_dispatch.c:290]: evapi_recv_client(): {0}
>>     [198.24.63.45:48905 <http://198.24.63.45:48905>] - received
>>     [145:{"event":"REGISTER","tindex":"7363","tlabel":"949153805","PhoneNumber":"11164","DeviceId":"abcd1234abcd1234","CallId":"10946-15480 at 198.24.63.39"},]
>>     (150) (0)
>>
>>     DEBUG: evapi [evapi_dispatch.c:370]: evapi_recv_client():
>>     executing event route for frame:
>>     [{"event":"REGISTER","tindex":"7363","tlabel":"949153805","PhoneNumber":"11164","DeviceId":"abcd1234abcd1234","CallId":"10946-15480 at 198.24.63.39"}]
>>     (145)
>>
>>     Just in case if you need to see the NGREP trace for the above
>>     messages, it is here:
>>     http://pastebin.com/4zTKmBJX
>>
>>     Thanks,
>>
>>     - Jayesh
>>
>>
>>     On Tue, Sep 29, 2015 at 12:16 PM Daniel-Constantin Mierla
>>     <miconda at gmail.com <mailto:miconda at gmail.com>> wrote:
>>
>>         Hello,
>>
>>         can you send here the log messages printed by evapi that
>>         contain "] - received [" which have:
>>
>>         - the previous bunch of json documents that were processed ok
>>         (just before the one that was discarded)
>>         - the bunch of json documents that were discarded
>>         - the next bunch of json documents that were processed ok
>>
>>         The logs were sent on could of emails and pastebin, so it is
>>         hard to track them -- if you have the logs, just locate the
>>         log messages with the discarded json and send it here along
>>         with the previous and next logs.
>>
>>         Cheers,
>>         Daniel
>>
>>
>>         On 28/09/15 17:04, Jayesh Nambiar wrote:
>>>         Thank you daniel.
>>>         Yes, they all get printed by the evapi module even when they
>>>         get discarded. If you once again check the paste-bin, the
>>>         logs pasted as Kamailio Logs are all discarded packets but
>>>         show up as received by evapi module.
>>>         I believe they got discarded because a packet that came
>>>         before them was partial and evapi discarded the remaining
>>>         part of the message in the new packet and encountered error.
>>>         - Jayesh
>>>
>>>         On Mon, Sep 28, 2015 at 11:13 AM Daniel-Constantin Mierla
>>>         <miconda at gmail.com> wrote:
>>>
>>>             Hello,
>>>
>>>             I will look over it during next days.
>>>
>>>             One more thing, are the packages sent by you printed by
>>>             evapi module, even not they are not processed (but
>>>             discarded)?
>>>
>>>             Cheers,
>>>             Daniel
>>>
>>
>>         -- 
>>         Daniel-Constantin Mierla
>>         http://twitter.com/#!/miconda <http://twitter.com/#%21/miconda> - http://www.linkedin.com/in/miconda
>>         Book: SIP Routing With Kamailio - http://www.asipto.com
>>
>
> -- 
> Daniel-Constantin Mierla
> http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
> Book: SIP Routing With Kamailio - http://www.asipto.com
> Kamailio Advanced Training, Sep 28-30, 2015, in Berlin - http://asipto.com/u/kat

-- 
Daniel-Constantin Mierla
http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
Book: SIP Routing With Kamailio - http://www.asipto.com

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