+ nr_vps_append (&pkt->rpkt->vps, vp);
+
+ return RSE_OK;
+}
+
+/* TODO: Rename rs_packet_append_avp, indicating that encoding is
+ being done. */
+int
+rs_packet_append_avp (struct rs_packet *pkt,
+ unsigned int attr, unsigned int vendor,
+ const void *data, size_t data_len)
+{
+ const DICT_ATTR *da;
+ int err;
+
+ assert (pkt);
+
+ da = nr_dict_attr_byvalue (attr, vendor);
+ if (da == NULL)
+ return RSE_ATTR_TYPE_UNKNOWN;
+
+ err = nr_packet_attr_append (pkt->rpkt, NULL, da, data, data_len);
+ if (err < 0)
+ return rs_err_conn_push (pkt->conn, -err, __func__);
+
+ return RSE_OK;
+}
+
+void
+rs_packet_avps (struct rs_packet *pkt, rs_avp ***vps)
+{
+ assert (pkt);
+ *vps = &pkt->rpkt->vps;
+}
+
+unsigned int
+rs_packet_code (struct rs_packet *pkt)
+{
+ assert (pkt);
+ return pkt->rpkt->code;
+}
+
+rs_const_avp *
+rs_packet_find_avp (struct rs_packet *pkt, unsigned int attr, unsigned int vendor)
+{
+ assert (pkt);
+ return rs_avp_find_const (pkt->rpkt->vps, attr, vendor);