Hi, with full debug is see this in log for every incoming TCP SIP request:
Mar 14 12:10:15 kamailio-preview /usr/sbin/kamailio[17940]: DEBUG: <core> [core/tcp_main.c:3871]: send2child(): WARNING: no free tcp receiver, connection passed to the least busy one (105) Mar 14 12:10:15 kamailio-preview /usr/sbin/kamailio[17940]: DEBUG: <core> [core/tcp_main.c:3875]: send2child(): selected tcp worker 2 27(17937) for activity on [tls:172.17.217.10:5061], 0x7fdaeda8f928
So the Kamailio TCP process is working, and received TCP traffic. But the tcp workers are somehow busy.
When i attach via strace to the TCP worker, i do not see any activity. Just:
futex(0x7fdaeca92f8c, FUTEX_WAIT_PRIVATE, 1, NULL
and nothing, even when i see the main tcp process choose this worker process.
Kristijan
Am Mi., 27. Feb. 2019 um 15:14 Uhr schrieb Kristijan Vrban vrban.lkml@gmail.com:
first of all thanks for the feedback. i prepared our system now to run with debug=3 I hope to see more then then.
Am Mi., 27. Feb. 2019 um 11:53 Uhr schrieb Kristijan Vrban vrban.lkml@gmail.com:
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