Hi,

I use Kamailio as a stateless proxy with UDP + TCP.

When TCP is used, I get the following TCP errors:

WARNING: <core> [receive.c:265]: receive_msg(): error while trying onreply script

ERROR: <core> [tcp_main.c:4338]: tcpconn_main_timeout(): connect xxxxxxxxx failed (timeout)

WARNING: <core> [receive.c:265]: receive_msg(): error while trying onreply script

ERROR: <core> [tcp_main.c:4338]: tcpconn_main_timeout(): connect xxxxxxxxxx failed (timeout)

The TCP config in my script:

tcp_connection_lifetime=3605

I get this issue when I receive replies to INVITE from the UAS.

I can see the replies using ngrep but Kamailio doesn't seem to be able to process them correctly.

I precise that the UAS is behind NAT and NAT configuration is correct (the INVITE does reach the UAS).

I also precise that the UAS sends keepalive every 5 sec (I can see the ping-pong using ngrep). I set it to 5 sec to eliminate the possibility that the NAT closes the connection.

Thanks,

Mickael