Hi, see here for TLS transport (TCP as well) http://www.pjsip.org/pjsip/docs/html/group__PJSIP__TRANSPORT__TLS.htm The function pjsip_tls_transport_start(), note that "Register support for SIP TLS transport by creating TLS listener on the specified address and port. This function will create an instance of SIP TLS transport factory and register it to the transport manager." In most case, we're clients, so we just want to register tpfactory to tpmgr. Why need to create transport listener as well here ? -- Khoa Pham HCMC University of Science www.fantageek.com -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.pjsip.org/pipermail/pjsip_lists.pjsip.org/attachments/20130604/6ef1a627/attachment-0001.html>