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annotate ServerMonitor/Objects/Checks/PingCheck.cs @ 14:2db36ab759de

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author Brad Greco <brad@bgreco.net>
date Mon, 22 Apr 2019 21:10:42 -0400
parents 453ecc1ed9ea
children 68d7834dc28e
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1 using System;
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2 using System.Collections.Generic;
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3 using System.ComponentModel;
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4 using System.Linq;
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5 using System.Net.NetworkInformation;
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6 using System.Text;
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7 using System.Threading;
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8 using System.Threading.Tasks;
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9
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10 namespace ServerMonitorApp
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11 {
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12 [DisplayName("Ping check"), Description("Check if the server responds to a ping request"), DisplayWeight(0)]
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13 public class PingCheck : Check
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14 {
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15 protected async override Task<CheckResult> ExecuteCheckAsync(CancellationToken token)
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16 {
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17 using (Ping ping = new Ping())
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18 {
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19 try
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20 {
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21 PingReply reply = await ping.SendPingAsync(Server.Host, Timeout);
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22 if (reply.Status == IPStatus.Success)
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23 return Pass(string.Format("Reply received in {0} ms", reply.RoundtripTime));
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24 else
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25 return Fail("Ping result: " + reply.Status);
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26 }
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27 catch (PingException e)
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28 {
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29 return Fail(e);
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30 }
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31 }
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32
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33 // Cancellable version that doesn't actulaly work
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34 // might be useful as a TaskCompletionSource example though
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35 //
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36 //TaskCompletionSource<CheckResult> tcs = new TaskCompletionSource<CheckResult
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37 //
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38 //using (Ping ping = new Ping())
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39 //{
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40 // token.Register(ping.SendAsyncCancel);
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41 // ping.PingCompleted += (sender, e) =>
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42 // {
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43 // if (e.Error != null)
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44 // tcs.SetResult(Fail("Ping failed: " + e.Error.GetBaseException().Message));
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45 // else if (e.Reply.Status != IPStatus.Success)
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46 // tcs.SetResult(Fail("Ping failed: " + e.Reply.Status.ToString()));
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47 // else
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48 // tcs.SetResult(Pass("Ping completed in " + e.Reply.RoundtripTime + "ms"));
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49 // };
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50 // ping.SendAsync(Server.Host, Timeout, null);
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51 //}
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52
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53 //return tcs.Task;
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54 }
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55 }
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56 }