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</o:shapelayout></xml><![endif]--></head><body lang=FR link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span lang=EN-US>Hi,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>I use Kamailio as a stateless proxy with UDP + TCP.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>When TCP is used, I get the following TCP errors:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>WARNING: <core> [receive.c:265]: receive_msg(): error while trying onreply script<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>ERROR: <core> [tcp_main.c:4338]: tcpconn_main_timeout(): connect xxxxxxxxx failed (timeout)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>WARNING: <core> [receive.c:265]: receive_msg(): error while trying onreply script<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>ERROR: <core> [tcp_main.c:4338]: tcpconn_main_timeout(): connect xxxxxxxxxx failed (timeout)<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>The TCP config in my script:<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>tcp_connection_lifetime=3605<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>I get this issue when I receive replies to INVITE from the UAS.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>I can see the replies using ngrep but Kamailio doesn't seem to be able to process them correctly.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>I precise that the UAS is behind NAT and NAT configuration is correct (the INVITE does reach the UAS).<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>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.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p><p class=MsoNormal><span lang=EN-US>Thanks,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Mickael<o:p></o:p></span></p></div></body></html>