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diff --git a/src/dht/gnunet-service-wdht_clients.h b/src/dht/gnunet-service-wdht_clients.h
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+++ b/src/dht/gnunet-service-wdht_clients.h
@@ -0,0 +1,149 @@
+/*
+     This file is part of GNUnet.
+     Copyright (C) 2009, 2010, 2011 Christian Grothoff (and other contributing authors)
+
+     GNUnet 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.
+
+     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
+     General Public License for more details.
+
+     You should have received a copy of the GNU General Public License
+     along with GNUnet; see the file COPYING.  If not, write to the
+     Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+     Boston, MA 02111-1307, USA.
+*/
+
+/**
+ * @file dht/gnunet-service-xdht_clients.h
+ * @brief GNUnet DHT service's client management code
+ * @author Christian Grothoff
+ * @author Nathan Evans
+ */
+#ifndef GNUNET_SERVICE_DHT_CLIENT_H
+#define GNUNET_SERVICE_DHT_CLIENT_H
+
+#include "gnunet_util_lib.h"
+#include "gnunet_block_lib.h"
+
+/**
+ * Handle a reply we've received from another peer.  If the reply
+ * matches any of our pending queries, forward it to the respective
+ * client(s).
+ *
+ * @param expiration when will the reply expire
+ * @param key the query this reply is for
+ * @param get_path_length number of peers in @a get_path
+ * @param get_path path the reply took on get
+ * @param put_path_length number of peers in @a put_path
+ * @param put_path path the reply took on put
+ * @param type type of the reply
+ * @param data_size number of bytes in @a data
+ * @param data application payload data
+ */
+void
+GDS_CLIENTS_handle_reply (struct GNUNET_TIME_Absolute expiration,
+                          const struct GNUNET_HashCode *key,
+                          unsigned int get_path_length,
+                          const struct GNUNET_PeerIdentity *get_path,
+                          unsigned int put_path_length,
+                          const struct GNUNET_PeerIdentity *put_path,
+                          enum GNUNET_BLOCK_Type type, size_t data_size,
+                          const void *data);
+
+
+/**
+ * Check if some client is monitoring GET messages and notify
+ * them in that case.
+ *
+ * @param options Options, for instance RecordRoute, DemultiplexEverywhere.
+ * @param type The type of data in the request.
+ * @param hop_count Hop count so far.
+ * @param path_length number of entries in path (or 0 if not recorded).
+ * @param path peers on the GET path (or NULL if not recorded).
+ * @param desired_replication_level Desired replication level.
+ * @param key Key of the requested data.
+ */
+void
+GDS_CLIENTS_process_get (uint32_t options,
+                         enum GNUNET_BLOCK_Type type,
+                         uint32_t hop_count,
+                         uint32_t desired_replication_level,
+                         unsigned int path_length,
+                         const struct GNUNET_PeerIdentity *path,
+                         const struct GNUNET_HashCode *key);
+
+
+/**
+ * Check if some client is monitoring GET RESP messages and notify
+ * them in that case.
+ *
+ * @param type The type of data in the result.
+ * @param get_path Peers on GET path (or NULL if not recorded).
+ * @param get_path_length number of entries in @a get_path.
+ * @param put_path peers on the PUT path (or NULL if not recorded).
+ * @param put_path_length number of entries in @a get_path.
+ * @param exp Expiration time of the data.
+ * @param key Key of the @a data.
+ * @param data Pointer to the result data.
+ * @param size Number of bytes in @a data.
+ */
+void
+GDS_CLIENTS_process_get_resp (enum GNUNET_BLOCK_Type type,
+                              const struct GNUNET_PeerIdentity *get_path,
+                              unsigned int get_path_length,
+                              const struct GNUNET_PeerIdentity *put_path,
+                              unsigned int put_path_length,
+                              struct GNUNET_TIME_Absolute exp,
+                              const struct GNUNET_HashCode * key,
+                              const void *data,
+                              size_t size);
+
+
+/**
+ * Check if some client is monitoring PUT messages and notify
+ * them in that case.
+ *
+ * @param options Options, for instance RecordRoute, DemultiplexEverywhere.
+ * @param type The type of data in the request.
+ * @param hop_count Hop count so far.
+ * @param path_length number of entries in path (or 0 if not recorded).
+ * @param path peers on the PUT path (or NULL if not recorded).
+ * @param desired_replication_level Desired replication level.
+ * @param exp Expiration time of the data.
+ * @param key Key under which data is to be stored.
+ * @param data Pointer to the data carried.
+ * @param size Number of bytes in data.
+ */
+void
+GDS_CLIENTS_process_put (uint32_t options,
+                         enum GNUNET_BLOCK_Type type,
+                         uint32_t hop_count,
+                         uint32_t desired_replication_level,
+                         unsigned int path_length,
+                         const struct GNUNET_PeerIdentity *path,
+                         struct GNUNET_TIME_Absolute exp,
+                         const struct GNUNET_HashCode * key,
+                         const void *data,
+                         size_t size);
+
+/**
+ * Initialize client subsystem.
+ *
+ * @param server the initialized server
+ */
+void
+GDS_CLIENTS_init (struct GNUNET_SERVER_Handle *server);
+
+
+/**
+ * Shutdown client subsystem.
+ */
+void
+GDS_CLIENTS_done (void);
+
+#endif