[sr-dev] [kamailio/kamailio] Frequently TCP/TLS sessions remain in CLOSE_WAIT (#1881)

[Daniel-Constantin Mierla]

Tune the tcp keepalive parameters to shorten the lifetime duration of these sockets -- there are couple of them, see:

  * https://www.kamailio.org/wiki/cookbooks/devel/core#tcp_keepalive

Also, you can tune at OS level with sysctl. The OS value can be seen in the file:

```
/proc/sys/net/ipv4/tcp_keepalive_time
```

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