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 -> 198.24.63.39:3927 [A]
  146:{"event":"REGISTER","tindex":"43213","tlabel":"220429340","PhoneNumber":"11151","DeviceId":"abcd1234abcd1234","CallId":"10932-15480@198.24.63.39"},146:{"event":"REGISTER","tindex":"52174","tlabel":"708781916","PhoneNumber":"11150","DeviceId":"abcd1234abcd1234","CallId":"10933-15480@198.24.63.39"},147:{"event":"REGISTER","tindex":"34251","tlabel":"1354642017","PhoneNumber":"11153","DeviceId":"abcd1234abcd1234","CallId":"10935-15480@198.24.63.39"},146:{"event":"REGISTER","tindex":"7366","tlabel":"1368396808","PhoneNumber":"11154","DeviceId":"abcd1234abcd1234","CallId":"10936-15480@198.24.63.39"},146:{"event":"REGISTER","tindex":"25289","tlabel":"119788881","PhoneNumber":"11152","DeviceId":"abcd1234abcd1234","C
allId":"10934-15480@198.24.63.39"},146:{"event":"REGISTER","tindex":"16327","tlabel":"971937029","PhoneNumber":"11155","DeviceId":"abcd1234abcd1234","CallId":"10937-15480@198.24.63.39"},146:{"event":"REGISTER","tindex":"22242","tlabel":"609737074","PhoneNumber":"11156","DeviceId":"abcd1234abcd1234","CallId":"10938-15480@198.24.63.39"},146:{"event":"REGISTER","tindex":"10720","tlabel":"930036340","PhoneNumber":"11157","DeviceId":"abcd1234abcd1234","CallId":"10939-15480@198.24.63.39"},146:{"event":"REGISTER","tindex":"61133","tlabel":"450961398","PhoneNumber":"11158","DeviceId":"abcd1234abcd1234","CallId":"10940-15480@198.24.63.39"},146:{"event":"R
EGISTER","tindex":"43210","tlabel":"639090568","PhoneNumber":"11160","Dev                                                                                                         

T 198.24.63.45:48905 -> 198.24.63.39:3927 [AP]
  iceId":"abcd1234abcd1234","CallId":"10942-15480@198.24.63.39"},146:{"event":"REGISTER","tindex":"4559","tlabel":"1701553747","PhoneNumber":"11159","DeviceId":"abcd1234abcd1234","CallId":"10941-15480@198.24.63.39"},
                                                                                                                                                                                               
T 198.24.63.45:48905 -> 198.24.63.39:3927 [AP]
  146:{"event":"REGISTER","tindex":"52171","tlabel":"748030241","PhoneNumber":"11161","DeviceId":"abcd1234abcd1234","CallId":"10943-15480@198.24.63.39"},

On Tue, Sep 29, 2015 at 4:43 PM Jayesh Nambiar <jayesh1017@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@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@198.24.63.39"

"CallId":"10941-15480@198.24.63.39"

"CallId":"10942-15480@198.24.63.39"

"CallId":"10943-15480@198.24.63.39"

"CallId":"10944-15480@198.24.63.39"

"CallId":"10945-15480@198.24.63.39"

And the message with CallID "CallId":"10943-15480@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@198.24.63.39"},] (151)

NOTICE: evapi_recv_client(): {0} [198.24.63.45:48905] - received [147:{"event":"REGISTER","tindex":"25291","tlabel":"2047024302","PhoneNumber":"11132","DeviceId":"abcd1234abcd1234","CallId":"10914-15480@198.24.63.39"},146:{"event":"REGISTER","tindex":"61136","tlabel":"839735223","PhoneNumber":"11148","DeviceId":"abcd1234abcd1234","CallId":"10930-15480@198.24.63.39"},143:{"event":"REGISTER","tindex":"4562","tlabel":"6586867","PhoneNumber":"11149","DeviceId":"abcd1234abcd1234","CallId":"10931-15480@198.24.63.39"},146:{"event":"REGISTER","tindex":"43213","tlabel":"220429340","PhoneNumber":"11151","DeviceId":"abcd1234abcd1234","CallId":"10932-15480@198.24.63.39"},146:{"event":"REGISTER","tindex":"52174","tlabel":"708781916","PhoneNumber":"11150","DeviceId":"abcd1234abcd1234","CallId":"10933-15480@198.24.63.39"},147:{"event":"REGISTER","tindex":"34251","tlabel":"1354642017","PhoneNumber":"11153","DeviceId":"abcd1234abcd1234","CallId":"10935-15480@198.24.63.39"},146:{"event":"REGISTER","tindex":"7366","tlabel":"1368396808","PhoneNumber":"11154","DeviceId":"abcd1234abcd1234","CallId":"10936-15480@198.24.63.39"},146:{"event":"REGISTER","tindex":"25289","tlabel":"119788881","PhoneNumber":"11152","DeviceId":"abcd1234abcd1234","CallId":"10934-15480@198.24.63.39"},146:{"event":"REGISTER","tindex":"16327","tlabel":"971937029","PhoneNumber":"11155","DeviceId":"abcd1234abcd1234","CallId":"10937-15480@198.24.63.39"},146:{"event":"REGISTER","tindex":"22242","tlabel":"609737074","PhoneNumber":"11156","DeviceId":"abcd1234abcd1234","CallId":"10938-15480@198.24.63.39"},146:{"event":"REGISTER","tindex":"10720","tlabel":"930036340","PhoneNumber":"11157","DeviceId":"abcd1234abcd1234","CallId":"10939-15480@198.24.63.39"},146:{"event":"REGISTER","tindex":"61133","tlabel":"450961398","PhoneNumber":"11158","DeviceId":"abcd1234abcd1234","CallId":"10940-15480@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@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@198.24.63.39"},] (151)

NOTICE: evapi [evapi_dispatch.c:290]: evapi_recv_client(): {0} [198.24.63.45:48905] - received [iceId":"abcd1234abcd1234","CallId":"10942-15480@198.24.63.39"},146:{"event":"REGISTER","tindex":"4559","tlabel":"1701553747","PhoneNumber":"11159","DeviceId":"abcd1234abcd1234","CallId":"10941-15480@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@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@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@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@198.24.63.39"},] (151)

NOTICE: evapi [evapi_dispatch.c:290]: evapi_recv_client(): {0} [198.24.63.45:48905] - received [146:{"event":"REGISTER","tindex":"52171","tlabel":"748030241","PhoneNumber":"11161","DeviceId":"abcd1234abcd1234","CallId":"10943-15480@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@198.24.63.39"},] (151)

NOTICE: evapi [evapi_dispatch.c:290]: evapi_recv_client(): {0} [198.24.63.45:48905] - received [146:{"event":"REGISTER","tindex":"25286","tlabel":"809034258","PhoneNumber":"11163","DeviceId":"abcd1234abcd1234","CallId":"10944-15480@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@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@198.24.63.39"},] (151)

NOTICE: evapi [evapi_dispatch.c:290]: evapi_recv_client(): {0} [198.24.63.45:48905] - received [146:{"event":"REGISTER","tindex":"34248","tlabel":"187029249","PhoneNumber":"11162","DeviceId":"abcd1234abcd1234","CallId":"10945-15480@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@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@198.24.63.39"},] (150)

NOTICE: evapi [evapi_dispatch.c:290]: evapi_recv_client(): {0} [198.24.63.45:48905] - received [145:{"event":"REGISTER","tindex":"7363","tlabel":"949153805","PhoneNumber":"11164","DeviceId":"abcd1234abcd1234","CallId":"10946-15480@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@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@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@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://www.linkedin.com/in/miconda
Book: SIP Routing With Kamailio - http://www.asipto.com