1 files changed, 36 insertions, 0 deletions
diff --git a/lib/layer/iterate.h b/lib/layer/iterate.h
new file mode 100644
index 0000000..a9395bf
--- /dev/null
+++ b/lib/layer/iterate.h
@@ -0,0 +1,36 @@
+/*  Copyright (C) 2014-2017 CZ.NIC, z.s.p.o. <knot-dns@labs.nic.cz>
+
+    This program is free software: you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation, either version 3 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+
+    You should have received a copy of the GNU General Public License
+    along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+#pragma once
+
+#include "lib/layer.h"
+#include "lib/rplan.h"
+
+/* Packet classification. */
+enum {
+	PKT_NOERROR   = 1 << 0, /* Positive response */
+	PKT_NODATA    = 1 << 1, /* No data response */
+	PKT_NXDOMAIN  = 1 << 2, /* Negative response */
+	PKT_REFUSED   = 1 << 3, /* Refused response */
+	PKT_ERROR     = 1 << 4  /* Bad message */
+};
+
+/** Classify response by type. */
+int kr_response_classify(const knot_pkt_t *pkt);
+
+/** Make next iterative query. */
+KR_EXPORT
+int kr_make_query(struct kr_query *query, knot_pkt_t *pkt);