add test solution and try to fix get id code bug

server.test/.gitignore

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+bin
+obj

server.test/UDPServerTest.cs

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+namespace server.test.UDPServer;
+
+public class UnitTest1
+{
+    [Fact]
+    public void UDPDataDeepClone()
+    {
+        var udpData = new UDPData()
+        {
+            DateTime = DateTime.Now,
+            Address = "127.0.0.1",
+            Port = 1234,
+            Data = new byte[] { 0xf0, 00, 00, 00 },
+            HasRead = false
+        };
+        var cloneUdpData = udpData.DeepClone();
+
+        Assert.Equal(udpData.DateTime, cloneUdpData.DateTime);
+        Assert.Equal(udpData.Address, cloneUdpData.Address);
+        Assert.Equal(udpData.Port, cloneUdpData.Port);
+        Assert.Equal(udpData.Data, cloneUdpData.Data);
+        Assert.Equal(udpData.HasRead, cloneUdpData.HasRead);
+
+        udpData.DateTime = DateTime.Now;
+        udpData.Address = "192.168.1.1";
+        udpData.Port = 33000;
+        udpData.Data = new byte[] { 0x0f, 00, 00, 00 };
+        udpData.HasRead = true;
+
+        Assert.NotEqual(udpData.DateTime, cloneUdpData.DateTime);
+        Assert.NotEqual(udpData.Address, cloneUdpData.Address);
+        Assert.NotEqual(udpData.Port, cloneUdpData.Port);
+        Assert.NotEqual(udpData.Data, cloneUdpData.Data);
+        Assert.NotEqual(udpData.HasRead, cloneUdpData.HasRead);
+    }
+}

server.test/server.test.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net9.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="coverlet.collector" Version="6.0.2" />
+    <PackageReference Include="Microsoft.AspNetCore.Mvc.Testing" Version="9.0.4" />
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.12.0" />
+    <PackageReference Include="xunit" Version="2.9.2" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.8.2" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <Using Include="Xunit" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\server\server.csproj" />
+  </ItemGroup>
+
+</Project>