Hi,

I experienced something similar on Debian Stretch, nevertheless on Debian Jessie it worked fine. We use TLS and I was thinking that it is something to do with SSL libraries, but never had chance to find out. But maybe my problem was nothing to do with what you just described.

Jurijs

On Wed, Feb 27, 2019 at 12:54 PM Kristijan Vrban <vrban.lkml@gmail.com> wrote:

Hi kamailios,

i have a creepy situation with v5.2.1 stable Kamilio. After a day or
so, Kamailio stop to process incoming SIP traffic via TCP. The
incoming TCP network packages get TCP-ACK from the OS (Debian 9,
4.18.0-15-generic-Linux) but Kamailio does not show any processing for
the SIP-Traffic incoming via TCP. No logs, nothing. While traffic via
UDP is working just totally fine.

When i look via command "netstat -ntp" is see, that the Recv-Q get
bigger and bigger. e.g.:

Proto Recv-Q Send-Q Local Address Foreign Address State PID/Program
name tcp 4566 0 172.17.217.12:5060 xxx.xxx.xxx.xxx:57252 ESTABLISHED
31347/kamailio

After Kamailio restart, all is working fine again for a day. We have
maybe 10-20 devices online via TCP and low call volume (1-2 call per
minute). The only settings for tcp we have is "tcp_delayed_ack=no"

How to could we debug this situation? Again, no error, no warings in
the log. Just nothing.

Kristijan

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