From cc6540a158e2fa2fee7dd86a6b7defa5298cbadd Mon Sep 17 00:00:00 2001
From: Daniel Chalmers <MoonDPC@gmail.com>
Date: Tue, 3 Jan 2017 21:35:16 -0500
Subject: [PATCH] Re-use ping object

---
 Network Monitor/MainWindowViewModel.cs | 57 ++++++++++++++------------
 Network Monitor/NetworkHelper.cs       | 12 ++----
 2 files changed, 34 insertions(+), 35 deletions(-)

diff --git a/Network Monitor/MainWindowViewModel.cs b/Network Monitor/MainWindowViewModel.cs
index e00fbbe..e78aea9 100644
--- a/Network Monitor/MainWindowViewModel.cs	
+++ b/Network Monitor/MainWindowViewModel.cs	
@@ -87,38 +87,41 @@ private void StartLatencyReader()
             new Thread(() =>
             {
                 Thread.CurrentThread.IsBackground = true;
-                while (true)
+                using (var ping = new Ping())
                 {
-                    var reply = NetworkHelper.GetLatency();
-                    if (reply != null)
+                    while (true)
                     {
-                        var isFirstCheck = _lastLatency == -1;
-
-                        var status = reply.Status;
-                        var latency = reply.RoundtripTime;
-                        var downloadedBytes = NetworkHelper.GetDownloadedBytes();
-                        var uploadedBytes = NetworkHelper.GetUploadedBytes();
-                        var downloadDifference = downloadedBytes - _lastDownload;
-                        var uploadDifference = uploadedBytes - _lastUpload;
-                        _lastLatency = latency;
-                        _lastDownload = downloadedBytes;
-                        _lastUpload = uploadedBytes;
-                        if (!isFirstCheck)
+                        var reply = ping.GetLatency();
+                        if (reply != null)
                         {
-                            Application.Current.Dispatcher.BeginInvoke(
-                                DispatcherPriority.Background,
-                                new Action(() =>
-                                {
-                                    Latency = status == IPStatus.Success ? latency.ToString() : "Error";
-                                    LatencyStatus = status;
-                                    Download = ByteHelper.BytesToString(downloadDifference);
-                                    Upload = ByteHelper.BytesToString(uploadDifference);
-                                    DownloadBytes = downloadDifference;
-                                    UploadBytes = uploadDifference;
-                                }));
+                            var isFirstCheck = _lastLatency == -1;
+
+                            var status = reply.Status;
+                            var latency = reply.RoundtripTime;
+                            var downloadedBytes = NetworkHelper.GetDownloadedBytes();
+                            var uploadedBytes = NetworkHelper.GetUploadedBytes();
+                            var downloadDifference = downloadedBytes - _lastDownload;
+                            var uploadDifference = uploadedBytes - _lastUpload;
+                            _lastLatency = latency;
+                            _lastDownload = downloadedBytes;
+                            _lastUpload = uploadedBytes;
+                            if (!isFirstCheck)
+                            {
+                                Application.Current.Dispatcher.BeginInvoke(
+                                    DispatcherPriority.Background,
+                                    new Action(() =>
+                                    {
+                                        Latency = status == IPStatus.Success ? latency.ToString() : "Error";
+                                        LatencyStatus = status;
+                                        Download = ByteHelper.BytesToString(downloadDifference);
+                                        Upload = ByteHelper.BytesToString(uploadDifference);
+                                        DownloadBytes = downloadDifference;
+                                        UploadBytes = uploadDifference;
+                                    }));
+                            }
                         }
+                        Thread.Sleep(Settings.Default.Interval);
                     }
-                    Thread.Sleep(Settings.Default.Interval);
                 }
             }).Start();
         }
diff --git a/Network Monitor/NetworkHelper.cs b/Network Monitor/NetworkHelper.cs
index d0d4705..1978349 100644
--- a/Network Monitor/NetworkHelper.cs	
+++ b/Network Monitor/NetworkHelper.cs	
@@ -6,15 +6,11 @@ namespace Network_Monitor
 {
     public static class NetworkHelper
     {
-        public static PingReply GetLatency()
+        public static PingReply GetLatency(this Ping ping)
         {
-            if (string.IsNullOrWhiteSpace(Settings.Default.PingHost))
-            {
-                return null;
-            }
-            var ping = new Ping();
-            var reply = ping.Send(Settings.Default.PingHost, 5000);
-            return reply;
+            return string.IsNullOrWhiteSpace(Settings.Default.PingHost)
+                ? null
+                : ping.Send(Settings.Default.PingHost, 5000);
         }
 
         public static long GetDownloadedBytes()