Dear, ? ?I want to add XMPP protocol to pjsip, now studying apis, I found pjlib start ssl socket connection automaticly, user can not send/recv plain data before negotiation. But XMPP connection needs such feature: 1. client setup a tcp connection with jabber server 2. client/server talk something under non ssl stage 3. start ssl negotiation with previous tcp connection 4. client/server talk under ssl any advice? bo