SDP_SESSION_LOCAL
if (!(ss->flags & SDP_SESSION_LOCAL)) {
if (data == NULL || datalen == 0 || !(ss->flags & SDP_SESSION_LOCAL)) {
datalen == 0 || !(ss->flags & SDP_SESSION_LOCAL)) {
ss->flags |= SDP_SESSION_LOCAL;
if (l == NULL || ss == NULL || ss->flags & SDP_SESSION_LOCAL) {