slp_get_langlen
off = SLP_HDRLEN + slp_get_langlen(reply);
off = SLP_HDRLEN + slp_get_langlen(reply);
off = SLP_HDRLEN + slp_get_langlen(reply);
off = SLP_HDRLEN + slp_get_langlen(reply);
off = SLP_HDRLEN + slp_get_langlen(reply);
langlen = slp_get_langlen(reply);
langlen = slp_get_langlen(msg);