Lesson 02

NetPulse.sln

@@ -7,6 +7,8 @@ Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "src", "src", "{827E0CD3-B72
 EndProject
 Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NetPulse.Core", "src\NetPulse.Core\NetPulse.Core.csproj", "{B996D138-9747-4AE9-9FEB-586D6F9CD97E}"
 EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "NetPulse.Cli", "src\NetPulse.Cli\NetPulse.Cli.csproj", "{3E57F4B5-0012-43F7-A016-5B60A27A1D0A}"
+EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
 		Debug|Any CPU = Debug|Any CPU
@@ -29,11 +31,24 @@ Global
 		{B996D138-9747-4AE9-9FEB-586D6F9CD97E}.Release|x64.Build.0 = Release|Any CPU
 		{B996D138-9747-4AE9-9FEB-586D6F9CD97E}.Release|x86.ActiveCfg = Release|Any CPU
 		{B996D138-9747-4AE9-9FEB-586D6F9CD97E}.Release|x86.Build.0 = Release|Any CPU
+		{3E57F4B5-0012-43F7-A016-5B60A27A1D0A}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{3E57F4B5-0012-43F7-A016-5B60A27A1D0A}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{3E57F4B5-0012-43F7-A016-5B60A27A1D0A}.Debug|x64.ActiveCfg = Debug|Any CPU
+		{3E57F4B5-0012-43F7-A016-5B60A27A1D0A}.Debug|x64.Build.0 = Debug|Any CPU
+		{3E57F4B5-0012-43F7-A016-5B60A27A1D0A}.Debug|x86.ActiveCfg = Debug|Any CPU
+		{3E57F4B5-0012-43F7-A016-5B60A27A1D0A}.Debug|x86.Build.0 = Debug|Any CPU
+		{3E57F4B5-0012-43F7-A016-5B60A27A1D0A}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{3E57F4B5-0012-43F7-A016-5B60A27A1D0A}.Release|Any CPU.Build.0 = Release|Any CPU
+		{3E57F4B5-0012-43F7-A016-5B60A27A1D0A}.Release|x64.ActiveCfg = Release|Any CPU
+		{3E57F4B5-0012-43F7-A016-5B60A27A1D0A}.Release|x64.Build.0 = Release|Any CPU
+		{3E57F4B5-0012-43F7-A016-5B60A27A1D0A}.Release|x86.ActiveCfg = Release|Any CPU
+		{3E57F4B5-0012-43F7-A016-5B60A27A1D0A}.Release|x86.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
 	EndGlobalSection
 	GlobalSection(NestedProjects) = preSolution
 		{B996D138-9747-4AE9-9FEB-586D6F9CD97E} = {827E0CD3-B72D-47B6-A68D-7590B98EB39B}
+		{3E57F4B5-0012-43F7-A016-5B60A27A1D0A} = {827E0CD3-B72D-47B6-A68D-7590B98EB39B}
 	EndGlobalSection
 EndGlobal

src/NetPulse.Cli/NetPulse.Cli.csproj

@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <ItemGroup>
+    <ProjectReference Include="..\NetPulse.Core\NetPulse.Core.csproj" />
+  </ItemGroup>
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net9.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

src/NetPulse.Cli/Program.cs

@@ -0,0 +1,71 @@
+using System.Net.NetworkInformation;
+using NetPulse.Core.Domain;
+
+if (args.Length == 0)
+{
+    Console.WriteLine("Usage: netpulse ping <hostname>");
+    return;
+}
+
+var command = args[0].ToLowerInvariant();
+
+switch (command)
+{
+    case "ping":
+        if (args.Length <2)
+        {
+            Console.WriteLine("Missing hostname/IP");
+            return;
+        }
+
+        var target = args[1];
+        await RunPingAsync(target);
+        break;
+
+    default:
+        Console.WriteLine($"Unkown command: {command}");
+            break;
+}
+
+static async Task RunPingAsync(string target)
+{
+    using var pinger = new Ping();
+
+    try
+    {
+        var reply = await pinger.SendPingAsync(target, 2000);
+
+        var result = new PingResult
+        {
+            TargetId = Guid.Empty,
+            Timestamputc = DateTime.UtcNow,
+            Success = reply.Status == IPStatus.Success,
+            LatencyMs = reply.Status == IPStatus.Success ? reply.RoundtripTime : null,
+            ErrorMessage = reply.Status != IPStatus.Success ? reply.Status.ToString() : null
+        };
+
+        Console.WriteLine(
+            result.Success
+            ? $"Ping to {target} succeeded in {result.LatencyMs} ms"
+            : $"Ping to {target} failed: {result.ErrorMessage}");
+
+        SaveMockResult(result);
+    }
+    catch (Exception ex)
+    {
+        Console.WriteLine($"Ping failed: {ex.Message}");
+        if (ex.InnerException is not null)
+        {
+            Console.WriteLine($"Innter: {ex.InnerException.Message}");
+        }
+    }
+}
+
+static void SaveMockResult(PingResult result)
+{
+    Console.WriteLine(" --- Saved Result ---");
+    Console.WriteLine($"ID: {result.Id}");
+    Console.WriteLine($"Success: {result.Success}");
+    Console.WriteLine($"Latency: {result.LatencyMs}");
+    Console.WriteLine($"Error: {result.ErrorMessage}");
+}

src/NetPulse.Core/Domain/PingResult.cs

@@ -15,7 +15,7 @@ public class PingResult
     /// <summary>
     /// When the check was performed (UTC).
     /// </summary>
-    public DateTime TimeStampUtc { get; init; }
+    public DateTime Timestamputc { get; init; }
 
     /// <summary>
     /// If the ping succeeded.