[asterisk-bugs] [JIRA] (ASTERISK-27985) chan_pjsip will not respond to INVITES when cel_aggregation_topic queue length is > 0

[xrobau (JIRA)]

xrobau created ASTERISK-27985:
---------------------------------

             Summary: chan_pjsip will not respond to INVITES when cel_aggregation_topic queue length is > 0
                 Key: ASTERISK-27985
                 URL: https://issues.asterisk.org/jira/browse/ASTERISK-27985
             Project: Asterisk
          Issue Type: Bug
      Security Level: None
          Components: CEL/cel_odbc
    Affects Versions: 13.22.0
         Environment: FreePBX 14, SNG7
            Reporter: xrobau
         Attachments: pjsip-ignored.txt

We've had sporadic reports of AGIs causing audio glitches on heavy systems (which we believe is related to https://issues.asterisk.org/jira/browse/ASTERISK-26257 but is NOT limited to confbridge, MOH and Playback/Background is also affected).

{code}
exten => 998,1,Answer
 same => n,Dial(Local/999 at from-internal-custom/n,300,gm(default))
 same => n,Playback(beep)
 same => n,Goto(1)

exten => 999,1,Set(COUNT=0)
 same => n(loop),GotoIf($[ ${COUNT} > 1000 ]?toomany)
 same => n,Gosub(testtrigger)
 same => n,Set(COUNT=$[ ${COUNT} + 1 ])
 same => n,Goto(loop)
 same => n(toomany),Hangup
 same => n(testtrigger),Dial(SIP/8675309 at 127.0.0.1:5160,1,g)
 same => n,Return
{code}

The above dialplan simulates a call entering the 'from-pstn' context of FreePBX, which then does - after the standard dialplan - a Hangup. 

This causes Asterisk to create about 20-30 calls per second (but does not trigger the audio issue, unfortunately).  It does however trigger a new issue where PJSIP channel INVITES are ignored until the cel_aggregation_topic queue is empty:

{code}
Processor                                      Processed   In Queue  Max Depth  Low water High water
... skipped lines ...
subm:cdr_engine-00000003                         5780891          0       2347       4500       5000
subm:cel_aggregation_topic-00000006              4968215     786689    2961396       2700       3000
subm:endpoint_topic_all-cached-00000008              794          0         13        450        500
subm:endpoint_topic_all-cached-0000005a              778          0         13        450        500
subm:manager_topic-00000007                      5962603          0        344       2700       3000
{code}

While the queue is being processed, pjsip calls are ignored.  chan_sip calls are answered and processed correctly, increasing the queue size.





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