Hey there, I found a logging error in https://github.com/pjsip/pjproject/blob/master/pjsip/src/pjsip/sip_transport_tls.c In the function on_accept_complete2() there is the following log statement: PJ_LOG(4,(listener->factory.obj_name,        "TLS listener %s: got incoming TLS connection "        "from %s, sock=%d",        pj_addr_str_print(&listener->factory.addr_name.host,                          listener->factory.addr_name.port, addr_buf,                          sizeof(addr_buf), 1),        pj_sockaddr_print(src_addr, addr, sizeof(addr), 3),        new_ssock)); Which leads to output like this: "TLS listener 10.137.8.11:5061: got incoming TLS connection from 10.137.8.19:38963, sock=-335377176" I guess new_ssock once was the underlying socket but is an opaque structure now, breaking this log statement. All the best, Andreas Wehrmann