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--- a/libupnpp/discovery.hxx
+++ b/libupnpp/discovery.hxx
@@ -1,18 +1,18 @@
 /* Copyright (C) 2013 J.F.Dockes
- *	 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 2 of the License, or
- *	 (at your option) any later version.
+ *   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 2 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.
+ *   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, write to the
- *	 Free Software Foundation, Inc.,
- *	 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program; if not, write to the
+ *   Free Software Foundation, Inc.,
+ *   59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  */
 #ifndef _UPNPPDISC_H_X_INCLUDED_
 #define _UPNPPDISC_H_X_INCLUDED_
@@ -24,67 +24,59 @@
 /**
  * Manage UPnP discovery and maintain a directory of active devices. Singleton.
  *
- * We are only interested in MediaServers with a ContentDirectory service
- * for now, but this could be made more general, by removing the filtering.
  */
 class UPnPDeviceDirectory {
 public:
-	/** Retrieve the singleton object for the discovery service,
-	 * and possibly start it up if this is the first call.
-	 *
-	 * This initializes the discovery service on first call, starting
-	 * the message-handling thread, registering our message handlers, 
-	 * and initiating an asynchronous UPnP device search. 
-	 *
-	 * The search implies a timeout period (the specified interval
-	 * over which the servers will send replies at random points). Any
-	 * subsequent getDirServices() call will block until the timeout
-	 * is expired, so that the client can choose to do something else
-	 * to use the time before getDirServices() can be hoped to return
-	 * immediate results. Use getRemainingDelay() to know the current
-	 * state of things.
-	 *
-	 * We need a separate thread to process the messages coming up
-	 * from libupnp, because some of them will in turn trigger other
-	 * calls to libupnp, and this must not be done from the libupnp
-	 * thread context which reported the initial message.
-	 */
-	static UPnPDeviceDirectory *getTheDir(time_t search_window = 1);
+    /** Retrieve the singleton object for the discovery service,
+     * and possibly start it up if this is the first call.
+     *
+     * This initializes the discovery service on first call, starting
+     * the message-handling thread, registering our message handlers, 
+     * and initiating an asynchronous UPnP device search. 
+     *
+     * The search implies a timeout period (the specified interval
+     * over which the servers will send replies at random points). Any
+     * subsequent getDirServices() call will block until the timeout
+     * is expired, so that the client can choose to do something else
+     * to use the time before getDirServices() can be hoped to return
+     * immediate results. Use getRemainingDelay() to know the current
+     * state of things.
+     *
+     * We need a separate thread to process the messages coming up
+     * from libupnp, because some of them will in turn trigger other
+     * calls to libupnp, and this must not be done from the libupnp
+     * thread context which reported the initial message.
+     */
+    static UPnPDeviceDirectory *getTheDir(time_t search_window = 1);
 
-	/** Clean up before exit. Do call this.*/
-	static void terminate();
+    /** Clean up before exit. Do call this.*/
+    static void terminate();
 
-	/** Retrieve the directory services currently seen on the network */
-	bool getDirServices(std::vector<ContentDirectoryService>&);
-	/** Retrieve specific service designated by its friendlyName */
-	bool getServer(const string& friendlyName, ContentDirectoryService& server);
+    /** Retrieve the directory services currently seen on the network */
+    bool getDirServices(std::vector<ContentDirectoryService>&);
+    /** Retrieve specific service designated by its friendlyName */
+    bool getServer(const string& friendlyName, ContentDirectoryService& server);
 
-	/** My health */
-	bool ok() {return m_ok;}
-	/** My diagnostic if health is bad */
-	const std::string getReason() {return m_reason;}
+    /** My health */
+    bool ok() {return m_ok;}
+    /** My diagnostic if health is bad */
+    const std::string getReason() {return m_reason;}
 
-	/** Remaining time until current search complete */
-	time_t getRemainingDelay();
+    /** Remaining time until current search complete */
+    time_t getRemainingDelay();
 
 private:
-	UPnPDeviceDirectory(time_t search_window);
-	UPnPDeviceDirectory(const UPnPDeviceDirectory &);
-	UPnPDeviceDirectory& operator=(const UPnPDeviceDirectory &);
-	bool search();
-	void expireDevices();
+    UPnPDeviceDirectory(time_t search_window);
+    UPnPDeviceDirectory(const UPnPDeviceDirectory &);
+    UPnPDeviceDirectory& operator=(const UPnPDeviceDirectory &);
+    bool search();
+    void expireDevices();
 
-	bool m_ok;
-	std::string m_reason;
-	int m_searchTimeout;
-	time_t m_lastSearch;
+    bool m_ok;
+    std::string m_reason;
+    int m_searchTimeout;
+    time_t m_lastSearch;
 };
 
 
 #endif /* _UPNPPDISC_H_X_INCLUDED_ */
-/* Local Variables: */
-/* mode: c++ */
-/* c-basic-offset: 4 */
-/* tab-width: 4 */
-/* indent-tabs-mode: t */
-/* End: */