+/* Sends each of the messages in list 'replies' on 'ofconn' in order,
+ * accounting them as replies. */
+void
+ofconn_send_replies(const struct ofconn *ofconn, struct list *replies)
+{
+ struct ofpbuf *reply, *next;
+
+ LIST_FOR_EACH_SAFE (reply, next, list_node, replies) {
+ list_remove(&reply->list_node);
+ ofconn_send_reply(ofconn, reply);
+ }
+}
+
+/* Sends 'error', which should be an OpenFlow error created with
+ * e.g. ofp_mkerr(), on 'ofconn', as a reply to 'request'. Only at most the
+ * first 64 bytes of 'request' are used. */
+void
+ofconn_send_error(const struct ofconn *ofconn,
+ const struct ofp_header *request, int error)
+{
+ struct ofpbuf *msg;
+
+ msg = ofputil_encode_error_msg(error, request);
+ if (msg) {
+ static struct vlog_rate_limit err_rl = VLOG_RATE_LIMIT_INIT(10, 10);
+
+ if (!VLOG_DROP_INFO(&err_rl)) {
+ const struct ofputil_msg_type *type;
+ const char *type_name;
+ size_t request_len;
+ char *error_s;
+
+ request_len = ntohs(request->length);
+ type_name = (!ofputil_decode_msg_type_partial(request,
+ MIN(64, request_len),
+ &type)
+ ? ofputil_msg_type_name(type)
+ : "invalid");
+
+ error_s = ofputil_error_to_string(error);
+ VLOG_INFO("%s: sending %s error reply to %s message",
+ rconn_get_name(ofconn->rconn), error_s, type_name);
+ free(error_s);
+ }
+ ofconn_send_reply(ofconn, msg);
+ }
+}
+