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diff --git a/kopete/protocols/jabber/jingle/libjingle/talk/base/network.h b/kopete/protocols/jabber/jingle/libjingle/talk/base/network.h
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+/*
+ * libjingle
+ * Copyright 2004--2005, Google Inc.
+ *
+ * Redistribution and use in source and binary forms, with or without 
+ * modification, are permitted provided that the following conditions are met:
+ *
+ *  1. Redistributions of source code must retain the above copyright notice, 
+ *     this list of conditions and the following disclaimer.
+ *  2. Redistributions in binary form must reproduce the above copyright notice,
+ *     this list of conditions and the following disclaimer in the documentation
+ *     and/or other materials provided with the distribution.
+ *  3. The name of the author may not be used to endorse or promote products 
+ *     derived from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
+ * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 
+ * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
+ * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
+ * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
+ * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 
+ * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 
+ * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifndef __NETWORK_H__
+#define __NETWORK_H__
+
+#include "talk/base/basictypes.h"
+
+#include <deque>
+#include <map>
+#include <string>
+#include <vector>
+
+namespace cricket {
+
+class Network;
+class NetworkSession;
+
+// Keeps track of the available network interfaces over time so that quality
+// information can be aggregated and recorded.
+class NetworkManager {
+public:
+
+  // Updates and returns the current list of networks available on this machine.
+  // This version will make sure that repeated calls return the same object for
+  // a given network, so that quality is tracked appropriately.
+  void GetNetworks(std::vector<Network*>& networks);
+
+  // Reads and writes the state of the quality database in a string format.
+  std::string GetState();
+  void SetState(std::string str);
+
+  // Creates a network object for each network available on the machine.
+  static void CreateNetworks(std::vector<Network*>& networks);
+
+private:
+  typedef std::map<std::string,Network*> NetworkMap;
+
+  NetworkMap networks_;
+};
+
+// Represents a Unix-type network interface, with a name and single address.
+// It also includes the ability to track and estimate quality.
+class Network {
+public:
+  Network(const std::string& name, uint32 ip);
+
+  // Returns the OS name of this network.  This is considered the primary key
+  // that identifies each network.
+  const std::string& name() const { return name_; }
+
+  // Identifies the current IP address used by this network.
+  uint32 ip() const { return ip_; }
+  void set_ip(uint32 ip) { ip_ = ip; }
+
+  // Updates the list of sessions that are ongoing.
+  void StartSession(NetworkSession* session);
+  void StopSession(NetworkSession* session);
+
+  // Re-computes the estimate of near-future quality based on the information
+  // as of this exact moment.
+  void EstimateQuality();
+
+  // Returns the current estimate of the near-future quality of connections
+  // that use this local interface.
+  double quality() { return quality_; }
+
+private:
+  typedef std::vector<NetworkSession*> SessionList;
+
+  std::string name_;
+  uint32 ip_;
+  SessionList sessions_;
+  double uniform_numerator_;
+  double uniform_denominator_;
+  double exponential_numerator_;
+  double exponential_denominator_;
+  uint32 last_data_time_;
+  double quality_;
+
+  // Updates the statistics maintained to include the given estimate.
+  void AddDataPoint(uint32 time, double quality);
+
+  // Converts the internal state to and from a string.  This is used to record
+  // quality information into a permanent store.
+  void SetState(std::string str);
+  std::string GetState();
+
+  friend class NetworkManager;
+};
+
+// Represents a session that is in progress using a particular network and can
+// provide data about the quality of the network at any given moment.
+class NetworkSession {
+public:
+  // Determines whether this session has an estimate at this moment.  We will
+  // only call GetCurrentQuality when this returns true.
+  virtual bool HasQuality() = 0;
+
+  // Returns an estimate of the quality at this exact moment.  The result should
+  // be a MOS (mean opinion score) value.
+  virtual float GetCurrentQuality() = 0;
+
+};
+
+const double QUALITY_BAD  = 3.0;
+const double QUALITY_FAIR = 3.35;
+const double QUALITY_GOOD = 3.7;
+
+} // namespace cricket
+
+#endif // __NETWORK_H__