private static void runCallback()
        {
            while (true)
            {
                logInfo("Sending callback data to master server.");
                try
                {
                    string json = "json={\"version\":\"" + VersionNum + "\"," +
                                  "\"protocol\":\"" + ProtocolVersion + "\"," +
                                  "\"mono\":\"" + IsMono + "\"," +
                                  "\"proxyPort\":\"" + config.proxyPort + "\"," +
                                  "\"maxSlots\":\"" + config.maxClients + "\"," +
                                  "\"clientCount\":\"" + clientCount + "\"}";
                    byte[] buffer = Encoding.UTF8.GetBytes(json);

                    WebRequest request = WebRequest.Create("http://callback.avilance.com/");
                    request.ContentType = "application/x-www-form-urlencoded";
                    request.Method = "POST";
                    request.ContentLength = buffer.Length;
                    Stream streamWriter = request.GetRequestStream();
                    streamWriter.Write(buffer, 0, buffer.Length);
                    streamWriter.Close();
                }
                catch (Exception e)
                {
                    logDebug("Callback", e.ToString());
                }
                Thread.Sleep(1000 * 60 * 15);
            }
        }