1 files changed, 73 insertions, 0 deletions

diff --git a/src/service/nse/nse.h b/src/service/nse/nse.h
new file mode 100644
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+++ b/src/service/nse/nse.h
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+/*
+     This file is part of GNUnet.
+     Copyright (C) 2001-2011 GNUnet e.V.
+
+     GNUnet 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 of the License,
+     or (at your option) any later version.
+
+     GNUnet 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
+     Affero General Public License for more details.
+
+     You should have received a copy of the GNU Affero General Public License
+     along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+     SPDX-License-Identifier: AGPL3.0-or-later
+ */
+
+/**
+ * @author Nathan Evans
+ * @file nse/nse.h
+ *
+ * @brief Common type definitions for the network size estimation
+ *        service and API.
+ */
+#ifndef NSE_H
+#define NSE_H
+
+#include "gnunet_common.h"
+
+GNUNET_NETWORK_STRUCT_BEGIN
+
+/**
+ * Network size estimate sent from the service
+ * to clients.  Contains the current size estimate
+ * (or 0 if none has been calculated) and the
+ * standard deviation of known estimates.
+ *
+ */
+struct GNUNET_NSE_ClientMessage
+{
+  /**
+   * Type: GNUNET_MESSAGE_TYPE_NSE_ESTIMATE
+   */
+  struct GNUNET_MessageHeader header;
+
+  /**
+   * For alignment.
+   */
+  uint32_t reserved GNUNET_PACKED;
+
+  /**
+   * Timestamp at which the server received the message.
+   */
+  struct GNUNET_TIME_AbsoluteNBO timestamp;
+
+  /**
+   * The current estimated network size.
+   */
+  double size_estimate GNUNET_PACKED;
+
+  /**
+   * The standard deviation (rounded down
+   * to the nearest integer) of size
+   * estimations.
+   */
+  double std_deviation GNUNET_PACKED;
+};
+GNUNET_NETWORK_STRUCT_END
+
+#endif