[asterisk-users] 13.22.0 - HTTP session count exceeded 100 sessions - instance unusable

Joshua C. Colp jcolp at sangoma.com
Wed Jul 1 07:54:38 CDT 2020

On Wed, Jul 1, 2020 at 9:49 AM Stefan Viljoen <viljoens at verishare.co.za>

> Hi all
> I'm running an Asterisk 13.22.0 instance on Centos 7 - I7-8700 12 core HT
> with 16GB of RAM.
> The server maintains a total active call count of approx 285 calls with 440
> channels at any one time. The totals never go below 200 calls concurrently
> active.
> For the kernel, top reports load levels at around 5.0 to 6.0 constantly.
> I'm having issues where at random intervals, the CLI is filled with
> thousands of these lines
> [Jul  1 14:32:24] WARNING[11530]: http.c:1942 httpd_helper_thread: HTTP
> session count exceeded 100 sessions.
> This appears to be some form of race condition, the Asterisk instance goes
> completely unresponsive, all RTP stops and all calls get hung up the moment
> these appear on the CLI. All registered SIP phones then deregister off the
> server withing one to two minutes.

This isn't really a race condition. The message occurs when the limit for
simultaneous HTTP sessions is exceeded. You haven't explained what the HTTP
server in Asterisk is being used for, so I'd start with investigating that.
Is ARI being used? WebRTC? If you do a packet capture on it do you see a
flood of incoming HTTP connection attempts?

Joshua C. Colp
Asterisk Technical Lead
Sangoma Technologies
Check us out at www.sangoma.com and www.asterisk.org
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