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diff --git a/src/backend/taler-merchant-httpd_refund.h b/src/backend/taler-merchant-httpd_refund.h
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+++ b/src/backend/taler-merchant-httpd_refund.h
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+/*
+  This file is part of TALER
+  (C) 2014, 2015, 2016, 2017 INRIA
+
+  TALER is free software; you can redistribute it and/or modify it under the
+  terms of the GNU Affero 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 backend/taler-merchant-httpd_refund.c
+ * @brief HTTP serving layer mainly intended to communicate with the frontend
+ * @author Marcello Stanisci
+ */
+
+#ifndef TALER_MERCHANT_HTTPD_REFUND_H
+#define TALER_MERCHANT_HTTPD_REFUND_H
+#include <microhttpd.h>
+#include "taler-merchant-httpd.h"
+
+/**
+ * Handle request for increasing the refund associated with
+ * a contract.
+ *
+ * @param connection the MHD connection to handle
+ * @param[in,out] connection_cls the connection's closure (can be updated)
+ * @param upload_data upload data
+ * @param[in,out] upload_data_size number of bytes (left) in @a upload_data
+ * @return MHD result code
+ */
+int
+MH_handler_refund_increase (struct TMH_RequestHandler *rh,
+                            struct MHD_Connection *connection,
+                            void **connection_cls,
+                            const char *upload_data,
+                            size_t *upload_data_size);
+
+
+/**
+ * Return refund situation about a contract.
+ *
+ * @param rh context of the handler
+ * @param connection the MHD connection to handle
+ * @param[in,out] connection_cls the connection's closure (can be updated)
+ * @param upload_data upload data
+ * @param[in,out] upload_data_size number of bytes (left) in @a upload_data
+ * @return MHD result code
+ */
+int
+MH_handler_refund_lookup (struct TMH_RequestHandler *rh,
+                          struct MHD_Connection *connection,
+                          void **connection_cls,
+                          const char *upload_data,
+                          size_t *upload_data_size);
+#endif