1 files changed, 33 insertions, 0 deletions
diff --git a/src/include/backoff.h b/src/include/backoff.h
new file mode 100644
index 000000000..0fd5683a9
--- /dev/null
+++ b/src/include/backoff.h
@@ -0,0 +1,33 @@
+/*
+  This file is part of TALER
+  Copyright (C) 2014-2018 GNUnet e.V.
+
+  TALER 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, or (at your option) any later version.
+
+  TALER 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
+  TALER; see the file COPYING.  If not, see
+  <http://www.gnu.org/licenses/>
+*/
+
+/**
+ * @file lib/backoff.h
+ * @brief backoff computation for the exchange lib
+ * @author Florian Dold
+ */
+#ifndef _TALER_BACKOFF_H
+#define _TALER_BACKOFF_H
+
+/**
+ * Random exponential backoff used in the exchange lib.
+ */
+#define EXCHANGE_LIB_BACKOFF(r) GNUNET_TIME_randomized_backoff ( \
+    (r), \
+    GNUNET_TIME_relative_multiply (GNUNET_TIME_UNIT_SECONDS, 2));
+
+#endif