[asterisk-dev] Possible bug: PJSIP stateless behavior when transport=tcp

[Anatoli]

Hi all,

It looks like there is a bug in PJSIP, but I've submitted a bug in Asterisk tracker as I'm not sure if it occurs only in connection with res_pjsip.

Basically, when an endpoint registers via TCP, PJSIP processes everything as corresponds: the communication is via TCP, REGISTER/ACK pass OK, the endpoint can even establish calls. But, when another endpoint calls to the first one, PJSIP tries to send INVITE message in a new TCP session establishing it to the port already opened for the first session. This would be OK for a UDP, but not for TCP.

For more information please check the bug report here: https://issues.asterisk.org/jira/browse/ASTERISK-24889.

Regards,
Anatoli