Hi Can someone give advice on the best approach for tracking responses of messages sent with pjsip_endpt_send_request_stateless(..) I send Message messages that are not connected to any ongoing dialog and I want to know if I got a OK or ERROR response for this message. My current guess is that I track some parameters in the tdata and then check in on_rx_response(..) if I receive something that matches what I sent. However Im not sure if this is the best approach so suggestions are very welcome.