Hello,

what is the kamailio version?

Were these bare tcp or also tls connections? Stretch comes with libssl 1.1 which is a major refactoring and wondering if that can be an effect.

Did you have to restart or the connections were ended after a while? Being just a temporary pike ...

What is the tcp connection lifetime value you use?

Might help a bit, you can increase the number of max tcp connections in kamailio (default is 2024).

  - https://www.kamailio.org/wiki/cookbooks/5.0.x/core#tcp_max_connections

Cheers,
Daniel

On 28.09.17 07:51, Jurijs Ivolga wrote:

Hi Guys,

I recently tried to use Debian Stretch in production and it didn't went well. On load(500k-700k SIP messages per day) I get a problem that at some point there was a pike of CLOSE_WAIT connections(up to 2k of CLOSE_WAIT connections) and no new connections was possible, I tried to figure out where problem is, but I didn't found anything in system or Kamailio logs, Kamailio just stopped to receive traffic via TCP, but UDP continued to work. Test environment where was no load I didn't faced such issue.

Just curious is there anybody who are using Debian Stretch in production without issues?

Jurijs

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