Hi, I've noticed that pjsua-lib 1.0.2 uses different proxies within one INVITE transaction when DNS SRV is used. As far as I understood RFC 3263, the client must do procedures to discover and select proxy only once per transaction. Fox example, I'm using callcentric.com as a SIP provider. It has the following records in DNS. ;; ANSWER SECTION: _sip._udp.callcentric.com. 3600 IN SRV 15 7 5080 alpha1.callcentric.com. _sip._udp.callcentric.com. 3600 IN SRV 15 7 5080 alpha3.callcentric.com. I make a call to sip:12345678901 at callcentric.com, pjsua-lib sends INVITE to alpha1.callcentric.com. Then, without call ever being confirmed, I hang-up and pjsua-lib sends CANCEL to alpha3.callcentric.com. It keeps resending CANCEL to alpha3.callcentric.com without any reply from it because it probably doesn't know anything about my call. The calling ends with the timeout. Sometimes it chooses the same proxy, in which case everything is fine. Did I understand everything right and pjsip shouldn't behave that way or is that a problem with the provider? Alexei
