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Tasks/Lab6/.vscode/launch.json

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+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "Launch ConsoleApp",
+            "type": "coreclr",
+            "request": "launch",
+            "preLaunchTask": "build ConsoleApp",
+            "program": "${workspaceFolder}/bin/Debug/net8.0/ConsoleApp.dll",
+            "args": [],
+            "cwd": "${workspaceFolder}",
+            "console": "integratedTerminal",
+            "stopAtEntry": false
+        }
+    ]
+}

Tasks/Lab6/.vscode/tasks.json

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+{
+    "version": "2.0.0",
+    "tasks": [
+        {
+            "label": "build ConsoleApp",
+            "command": "dotnet",
+            "type": "process",
+            "args": [
+                "build",
+                "${workspaceFolder}/ConsoleApp.csproj",
+                "/property:GenerateFullPaths=true",
+                "/consoleloggerparameters:NoSummary;ForceNoAlign"
+            ],
+            "problemMatcher": "$msCompile"
+        }
+    ]
+}

Tasks/Lab6/ConsoleApp.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <StartupObject>DT6.SocketClient</StartupObject>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>disable</Nullable>
+  </PropertyGroup>
+
+</Project>

Tasks/Lab6/DT6_0.cs

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+using System;
+using System.Net;
+using System.Net.Sockets;
+using System.Text;
+using System.Threading;
+using System.Threading.Tasks;
+
+namespace DT6 {
+    // Client app is the one sending messages to a Server/listener.   
+    // Both listener and client can send messages back and forth once a   
+    // communication is established.  
+    public class SocketClient {
+        
+        public static int Main(String[] args) {
+            Received += (arg) => Console.Write("Received:" + arg);
+            Task.Run(() => StartClient());
+            Thread.Sleep(1000);
+            Console.ReadKey();
+            return 0;
+        }
+        
+        public static event Action<string> Received;
+
+        public static void StartClient() {
+            try
+            {
+                using TcpClient client = new("localhost", 8000);
+                using Stream stream = client.GetStream();
+                using StreamReader reader = new(client.GetStream());
+                using StreamWriter writer = new(client.GetStream());
+                {
+                    string line;
+                    writer.WriteLine();
+
+                    while ((line = reader.ReadLine()) != null)
+                    {
+                        Received?.Invoke(line);
+                    }
+                }
+            }
+            catch (Exception e)
+            {
+                Console.WriteLine(e.ToString());  
+            }
+        }
+    }
+}

Tasks/Lab6/SocketClient.cs

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+
+    using System;  
+    using System.Net;  
+    using System.Net.Sockets;  
+    using System.Text;  
+      
+    // Client app is the one sending messages to a Server/listener.   
+    // Both listener and client can send messages back and forth once a   
+    // communication is established.  
+    public class SocketClient  
+    {  
+        public static int Main(String[] args)  
+        {  
+            StartClient();
+            Console.WriteLine("\n Press any key to continue...");  
+            Console.ReadKey();  
+            return 0;  
+        }  
+      
+      
+        public static void StartClient()  
+        {  
+            byte[] bytes = new byte[1024];  
+      
+            try  
+            {  
+                // Connect to a Remote server  
+                // Get Host IP Address that is used to establish a connection  
+                // In this case, we get one IP address of localhost that is IP : 127.0.0.1  
+                // If a host has multiple addresses, you will get a list of addresses  
+                //IPHostEntry host = Dns.GetHostEntry("localhost");  
+                //IPAddress ipAddress = host.AddressList[0];  
+                
+                IPAddress ipAddress = IPAddress.Parse("127.0.0.1");
+                IPEndPoint remoteEP = new IPEndPoint(ipAddress, 11000);  
+      
+                // Create a TCP/IP  socket.    
+                Socket sender = new Socket(ipAddress.AddressFamily,  
+                    SocketType.Stream, ProtocolType.Tcp);  
+      
+                // Connect the socket to the remote endpoint. Catch any errors.    
+                try  
+                {  
+                    // Connect to Remote EndPoint  
+                    sender.Connect(remoteEP);  
+      
+                    Console.WriteLine("Socket connected to {0}",  
+                        sender.RemoteEndPoint.ToString());  
+      
+                    // Encode the data string into a byte array.    
+                    byte[] msg = Encoding.ASCII.GetBytes("This is a test<EOF>");  
+      
+                    // Send the data through the socket.    
+                    int bytesSent = sender.Send(msg);  
+      
+                    // Receive the response from the remote device.    
+                    int bytesRec = sender.Receive(bytes);  
+                    Console.WriteLine("Echoed test = {0}",  
+                        Encoding.ASCII.GetString(bytes, 0, bytesRec));  
+      
+                    // Release the socket.    
+                    sender.Shutdown(SocketShutdown.Both);  
+                    sender.Close();  
+      
+                }  
+                catch (ArgumentNullException ane)  
+                {  
+                    Console.WriteLine("ArgumentNullException : {0}", ane.ToString());  
+                }  
+                catch (SocketException se)  
+                {  
+                    Console.WriteLine("SocketException : {0}", se.ToString());  
+                }  
+                catch (Exception e)  
+                {  
+                    Console.WriteLine("Unexpected exception : {0}", e.ToString());  
+                }  
+      
+            }  
+            catch (Exception e)  
+            {  
+                Console.WriteLine(e.ToString());  
+            }  
+        }  
+    }  

Tasks/Lab6/SocketListener.cs

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+
+    using System;  
+    using System.Net;  
+    using System.Net.Sockets;  
+    using System.Text;  
+      
+    // Socket Listener acts as a server and listens to the incoming   
+    // messages on the specified port and protocol.  
+    public class SocketListener  
+    {  
+        public static int Main(String[] args)  
+        {  
+            StartServer();  
+            Console.WriteLine("\n Press any key to continue...");  
+            Console.ReadKey();  
+            return 0;  
+        }  
+      
+         
+        public static void StartServer()  
+        {  
+            // Get Host IP Address that is used to establish a connection  
+            // In this case, we get one IP address of localhost that is IP : 127.0.0.1  
+            // If a host has multiple addresses, you will get a list of addresses  
+            // IPHostEntry host = Dns.GetHostEntry("localhost");  
+            // IPAddress ipAddress = host.AddressList[0];  
+            IPAddress ipAddress = IPAddress.Parse("127.0.0.1");
+            IPEndPoint localEndPoint = new IPEndPoint(ipAddress, 11000);    
+            
+      
+            try {   
+      
+                // Create a Socket that will use Tcp protocol      
+                Socket listener = new Socket(ipAddress.AddressFamily, SocketType.Stream, ProtocolType.Tcp);  
+                // A Socket must be associated with an endpoint using the Bind method  
+                listener.Bind(localEndPoint);  
+                // Specify how many requests a Socket can listen before it gives Server busy response.  
+                // We will listen 10 requests at a time  
+                listener.Listen(10);  
+      
+                Console.WriteLine("Waiting for a connection...");  
+                Socket handler = listener.Accept();  
+      
+                 // Incoming data from the client.    
+                 string data = null;  
+                 byte[] bytes = null;  
+      
+                while (true)  
+                {  
+                    bytes = new byte[1024];  
+                    int bytesRec = handler.Receive(bytes);  
+                    data += Encoding.ASCII.GetString(bytes, 0, bytesRec);  
+                    if (data.IndexOf("<EOF>") > -1)  
+                    {  
+                        break;  
+                    }  
+                }  
+      
+                Console.WriteLine("Text received : {0}", data);  
+      
+                byte[] msg = Encoding.ASCII.GetBytes(data);  
+                handler.Send(msg);  
+                handler.Shutdown(SocketShutdown.Both);  
+                handler.Close();  
+            }  
+            catch (Exception e)  
+            {  
+                Console.WriteLine(e.ToString());  
+            }  
+        }          
+    }  

Tasks/Lab6/UWPClient/App.xaml

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+<Application
+    x:Class="UWPClient.App"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:local="using:UWPClient">
+
+</Application>

Tasks/Lab6/UWPClient/App.xaml.cs

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+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Runtime.InteropServices.WindowsRuntime;
+using Windows.ApplicationModel;
+using Windows.ApplicationModel.Activation;
+using Windows.Foundation;
+using Windows.Foundation.Collections;
+using Windows.UI.Xaml;
+using Windows.UI.Xaml.Controls;
+using Windows.UI.Xaml.Controls.Primitives;
+using Windows.UI.Xaml.Data;
+using Windows.UI.Xaml.Input;
+using Windows.UI.Xaml.Media;
+using Windows.UI.Xaml.Navigation;
+
+namespace UWPClient
+{
+    /// <summary>
+    /// Provides application-specific behavior to supplement the default Application class.
+    /// </summary>
+    sealed partial class App : Application
+    {
+        /// <summary>
+        /// Initializes the singleton application object.  This is the first line of authored code
+        /// executed, and as such is the logical equivalent of main() or WinMain().
+        /// </summary>
+        public App()
+        {
+            this.InitializeComponent();
+            this.Suspending += OnSuspending;
+        }
+
+        /// <summary>
+        /// Invoked when the application is launched normally by the end user.  Other entry points
+        /// will be used such as when the application is launched to open a specific file.
+        /// </summary>
+        /// <param name="e">Details about the launch request and process.</param>
+        protected override void OnLaunched(LaunchActivatedEventArgs e)
+        {
+            Frame rootFrame = Window.Current.Content as Frame;
+
+            // Do not repeat app initialization when the Window already has content,
+            // just ensure that the window is active
+            if (rootFrame == null)
+            {
+                // Create a Frame to act as the navigation context and navigate to the first page
+                rootFrame = new Frame();
+
+                rootFrame.NavigationFailed += OnNavigationFailed;
+
+                if (e.PreviousExecutionState == ApplicationExecutionState.Terminated)
+                {
+                    //TODO: Load state from previously suspended application
+                }
+
+                // Place the frame in the current Window
+                Window.Current.Content = rootFrame;
+            }
+
+            if (e.PrelaunchActivated == false)
+            {
+                if (rootFrame.Content == null)
+                {
+                    // When the navigation stack isn't restored navigate to the first page,
+                    // configuring the new page by passing required information as a navigation
+                    // parameter
+                    rootFrame.Navigate(typeof(MainPage), e.Arguments);
+                }
+                // Ensure the current window is active
+                Window.Current.Activate();
+            }
+        }
+
+        /// <summary>
+        /// Invoked when Navigation to a certain page fails
+        /// </summary>
+        /// <param name="sender">The Frame which failed navigation</param>
+        /// <param name="e">Details about the navigation failure</param>
+        void OnNavigationFailed(object sender, NavigationFailedEventArgs e)
+        {
+            throw new Exception("Failed to load Page " + e.SourcePageType.FullName);
+        }
+
+        /// <summary>
+        /// Invoked when application execution is being suspended.  Application state is saved
+        /// without knowing whether the application will be terminated or resumed with the contents
+        /// of memory still intact.
+        /// </summary>
+        /// <param name="sender">The source of the suspend request.</param>
+        /// <param name="e">Details about the suspend request.</param>
+        private void OnSuspending(object sender, SuspendingEventArgs e)
+        {
+            var deferral = e.SuspendingOperation.GetDeferral();
+            //TODO: Save application state and stop any background activity
+            deferral.Complete();
+        }
+    }
+}

Tasks/Lab6/UWPClient/MainPage.xaml

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+<Page
+    x:Class="UWPClient.MainPage"
+    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
+    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
+    xmlns:local="using:UWPClient"
+    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
+    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
+    mc:Ignorable="d"
+    Background="{ThemeResource ApplicationPageBackgroundThemeBrush}" Height="250" Width="400">
+
+    <Grid>
+        <Grid.ColumnDefinitions>
+            <ColumnDefinition Width="Auto"/>
+            <ColumnDefinition/>
+        </Grid.ColumnDefinitions>
+        <Button VerticalAlignment="Center"
+                Content="Load"
+                Grid.Column="0"
+                Margin="10" Click="Button_Click" />
+        <TextBox x:Name="textBox" Grid.Column="1"
+                 Margin="10"
+                 Text="TextBox"
+                 TextWrapping="Wrap"
+                 VerticalAlignment="Stretch"
+                 AcceptsReturn="True"/>
+    </Grid>
+</Page>

Tasks/Lab6/UWPClient/MainPage.xaml.cs

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+using System;
+using System.Collections.Generic;
+using System.IO;
+using System.Linq;
+using System.Net.Sockets;
+using System.Runtime.InteropServices.WindowsRuntime;
+using System.Text;
+using System.Threading.Tasks;
+using Windows.Foundation;
+using Windows.Foundation.Collections;
+using Windows.UI.Xaml;
+using Windows.UI.Xaml.Controls;
+using Windows.UI.Xaml.Controls.Primitives;
+using Windows.UI.Xaml.Data;
+using Windows.UI.Xaml.Input;
+using Windows.UI.Xaml.Media;
+using Windows.UI.Xaml.Navigation;
+
+// The Blank Page item template is documented at https://go.microsoft.com/fwlink/?LinkId=402352&clcid=0x409
+
+namespace UWPClient
+{
+    /// <summary>
+    /// An empty page that can be used on its own or navigated to within a Frame.
+    /// </summary>
+    public sealed partial class MainPage : Page
+    {
+        public MainPage()
+        {
+            InitializeComponent();
+            Received += AppendLine;
+        }
+
+        public event Action<string> Received;
+
+        private void Button_Click(object sender, RoutedEventArgs e)
+        {
+            this.InvokeIfRequired(() => textBox.Text = "");
+            Task.Run(() => StartClient());
+        }
+
+        private void AppendLine(string line)
+        {
+            this.InvokeIfRequired(() => {
+                StringBuilder stringBuilder = new StringBuilder(textBox.Text);
+                stringBuilder.AppendLine(line);
+                textBox.Text = stringBuilder.ToString();
+            });
+        }
+
+        private void StartClient()
+        {
+            try
+            {
+                using (TcpClient client = new TcpClient("localhost", 8000))
+                using (Stream stream = client.GetStream())
+                using (StreamReader reader = new StreamReader(stream))
+                using (StreamWriter writer = new StreamWriter(stream))
+                {
+                    string line;
+                    writer.WriteLine();
+
+                    while ((line = reader.ReadLine()) != null)
+                    {
+                        Received.Invoke(line);
+                    }
+                }
+            }
+            catch (Exception e)
+            {
+                textBox.Text = e.ToString();
+            }
+        }
+    }
+}

Tasks/Lab6/UWPClient/Package.appxmanifest

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+<?xml version="1.0" encoding="utf-8"?>
+
+<Package
+  xmlns="http://schemas.microsoft.com/appx/manifest/foundation/windows10"
+  xmlns:mp="http://schemas.microsoft.com/appx/2014/phone/manifest"
+  xmlns:uap="http://schemas.microsoft.com/appx/manifest/uap/windows10"
+  IgnorableNamespaces="uap mp">
+
+  <Identity
+    Name="95776a6f-0138-4a27-8caa-d4a652187116"
+    Publisher="CN=Manuel Thalmann"
+    Version="1.0.1.0" />
+
+  <mp:PhoneIdentity PhoneProductId="95776a6f-0138-4a27-8caa-d4a652187116" PhonePublisherId="00000000-0000-0000-0000-000000000000"/>
+
+  <Properties>
+    <DisplayName>UWPClient</DisplayName>
+    <PublisherDisplayName>Manuel Thalmann</PublisherDisplayName>
+    <Logo>Assets\StoreLogo.png</Logo>
+  </Properties>
+
+  <Dependencies>
+    <TargetDeviceFamily Name="Windows.Universal" MinVersion="10.0.0.0" MaxVersionTested="10.0.0.0" />
+  </Dependencies>
+
+  <Resources>
+    <Resource Language="x-generate"/>
+  </Resources>
+
+  <Applications>
+    <Application Id="App"
+      Executable="$targetnametoken$.exe"
+      EntryPoint="UWPClient.App">
+      <uap:VisualElements
+        DisplayName="UWPClient"
+        Square150x150Logo="Assets\Square150x150Logo.png"
+        Square44x44Logo="Assets\Square44x44Logo.png"
+        Description="UWPClient"
+        BackgroundColor="transparent">
+        <uap:DefaultTile Wide310x150Logo="Assets\Wide310x150Logo.png"/>
+        <uap:SplashScreen Image="Assets\SplashScreen.png" />
+      </uap:VisualElements>
+    </Application>
+  </Applications>
+
+  <Capabilities>
+    <Capability Name="internetClient" />
+  </Capabilities>
+</Package>

Tasks/Lab6/UWPClient/PageExtension.cs

@@ -0,0 +1,13 @@
+using System;
+using Windows.UI.Xaml.Controls;
+
+namespace UWPClient
+{
+    public static class PageExtension
+    {
+        public static async void InvokeIfRequired(this Page page, Action action)
+        {
+            await page.Dispatcher.RunAsync(Windows.UI.Core.CoreDispatcherPriority.High, () => action());
+        }
+    }
+}

Tasks/Lab6/UWPClient/Properties/AssemblyInfo.cs

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+using System.Reflection;
+using System.Runtime.CompilerServices;
+using System.Runtime.InteropServices;
+
+// General Information about an assembly is controlled through the following 
+// set of attributes. Change these attribute values to modify the information
+// associated with an assembly.
+[assembly: AssemblyTitle("UWPClient")]
+[assembly: AssemblyDescription("")]
+[assembly: AssemblyConfiguration("")]
+[assembly: AssemblyCompany("")]
+[assembly: AssemblyProduct("UWPClient")]
+[assembly: AssemblyCopyright("Copyright ©  2024")]
+[assembly: AssemblyTrademark("")]
+[assembly: AssemblyCulture("")]
+
+// Version information for an assembly consists of the following four values:
+//
+//      Major Version
+//      Minor Version 
+//      Build Number
+//      Revision
+//
+// You can specify all the values or you can default the Build and Revision Numbers 
+// by using the '*' as shown below:
+// [assembly: AssemblyVersion("1.0.*")]
+[assembly: AssemblyVersion("1.0.0.0")]
+[assembly: AssemblyFileVersion("1.0.0.0")]
+[assembly: ComVisible(false)]

Tasks/Lab6/UWPClient/Properties/Default.rd.xml

@@ -0,0 +1,31 @@
+<!--
+    This file contains Runtime Directives used by .NET Native. The defaults here are suitable for most
+    developers. However, you can modify these parameters to modify the behavior of the .NET Native
+    optimizer.
+
+    Runtime Directives are documented at https://go.microsoft.com/fwlink/?LinkID=391919
+
+    To fully enable reflection for App1.MyClass and all of its public/private members
+    <Type Name="App1.MyClass" Dynamic="Required All"/>
+
+    To enable dynamic creation of the specific instantiation of AppClass<T> over System.Int32
+    <TypeInstantiation Name="App1.AppClass" Arguments="System.Int32" Activate="Required Public" />
+
+    Using the Namespace directive to apply reflection policy to all the types in a particular namespace
+    <Namespace Name="DataClasses.ViewModels" Serialize="All" />
+-->
+
+<Directives xmlns="http://schemas.microsoft.com/netfx/2013/01/metadata">
+  <Application>
+    <!--
+      An Assembly element with Name="*Application*" applies to all assemblies in
+      the application package. The asterisks are not wildcards.
+    -->
+    <Assembly Name="*Application*" Dynamic="Required All" />
+    
+    
+    <!-- Add your application specific runtime directives here. -->
+
+
+  </Application>
+</Directives>

Tasks/Lab6/UWPClient/UWPClient.csproj

@@ -0,0 +1,182 @@
+<?xml version="1.0" encoding="utf-8"?>
+<Project ToolsVersion="15.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">x86</Platform>
+    <ProjectGuid>{D7CF1F46-74E2-48E1-A43C-4288A98F0193}</ProjectGuid>
+    <OutputType>AppContainerExe</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>UWPClient</RootNamespace>
+    <AssemblyName>UWPClient</AssemblyName>
+    <DefaultLanguage>en-US</DefaultLanguage>
+    <TargetPlatformIdentifier>UAP</TargetPlatformIdentifier>
+    <TargetPlatformVersion Condition=" '$(TargetPlatformVersion)' == '' ">10.0.19041.0</TargetPlatformVersion>
+    <TargetPlatformMinVersion>10.0.17763.0</TargetPlatformMinVersion>
+    <MinimumVisualStudioVersion>14</MinimumVisualStudioVersion>
+    <FileAlignment>512</FileAlignment>
+    <ProjectTypeGuids>{A5A43C5B-DE2A-4C0C-9213-0A381AF9435A};{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}</ProjectTypeGuids>
+    <WindowsXamlEnableOverview>true</WindowsXamlEnableOverview>
+    <AppxPackageSigningEnabled>True</AppxPackageSigningEnabled>
+    <PackageCertificateThumbprint>
+    </PackageCertificateThumbprint>
+    <PackageCertificateKeyFile>UWPClient_TemporaryKey.pfx</PackageCertificateKeyFile>
+    <GenerateAppInstallerFile>False</GenerateAppInstallerFile>
+    <AppxPackageSigningTimestampDigestAlgorithm>SHA256</AppxPackageSigningTimestampDigestAlgorithm>
+    <AppxAutoIncrementPackageRevision>True</AppxAutoIncrementPackageRevision>
+    <GenerateTestArtifacts>True</GenerateTestArtifacts>
+    <AppxBundle>Always</AppxBundle>
+    <AppxBundlePlatforms>x86|x64</AppxBundlePlatforms>
+    <HoursBetweenUpdateChecks>0</HoursBetweenUpdateChecks>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x86'">
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\x86\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>full</DebugType>
+    <PlatformTarget>x86</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x86'">
+    <OutputPath>bin\x86\Release\</OutputPath>
+    <DefineConstants>TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <Optimize>true</Optimize>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>x86</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+    <UseDotNetNativeToolchain>true</UseDotNetNativeToolchain>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|ARM'">
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\ARM\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>full</DebugType>
+    <PlatformTarget>ARM</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|ARM'">
+    <OutputPath>bin\ARM\Release\</OutputPath>
+    <DefineConstants>TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <Optimize>true</Optimize>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>ARM</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+    <UseDotNetNativeToolchain>true</UseDotNetNativeToolchain>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|ARM64'">
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\ARM64\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>full</DebugType>
+    <PlatformTarget>ARM64</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+    <UseDotNetNativeToolchain>true</UseDotNetNativeToolchain>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|ARM64'">
+    <OutputPath>bin\ARM64\Release\</OutputPath>
+    <DefineConstants>TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <Optimize>true</Optimize>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>ARM64</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+    <UseDotNetNativeToolchain>true</UseDotNetNativeToolchain>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Debug|x64'">
+    <DebugSymbols>true</DebugSymbols>
+    <OutputPath>bin\x64\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>full</DebugType>
+    <PlatformTarget>x64</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+  </PropertyGroup>
+  <PropertyGroup Condition="'$(Configuration)|$(Platform)' == 'Release|x64'">
+    <OutputPath>bin\x64\Release\</OutputPath>
+    <DefineConstants>TRACE;NETFX_CORE;WINDOWS_UWP</DefineConstants>
+    <Optimize>true</Optimize>
+    <NoWarn>;2008</NoWarn>
+    <DebugType>pdbonly</DebugType>
+    <PlatformTarget>x64</PlatformTarget>
+    <UseVSHostingProcess>false</UseVSHostingProcess>
+    <ErrorReport>prompt</ErrorReport>
+    <Prefer32Bit>true</Prefer32Bit>
+    <UseDotNetNativeToolchain>true</UseDotNetNativeToolchain>
+  </PropertyGroup>
+  <PropertyGroup>
+    <RestoreProjectStyle>PackageReference</RestoreProjectStyle>
+  </PropertyGroup>
+  <ItemGroup>
+    <Compile Include="App.xaml.cs">
+      <DependentUpon>App.xaml</DependentUpon>
+    </Compile>
+    <Compile Include="MainPage.xaml.cs">
+      <DependentUpon>MainPage.xaml</DependentUpon>
+    </Compile>
+    <Compile Include="PageExtension.cs" />
+    <Compile Include="Properties\AssemblyInfo.cs" />
+  </ItemGroup>
+  <ItemGroup>
+    <AppxManifest Include="Package.appxmanifest">
+      <SubType>Designer</SubType>
+    </AppxManifest>
+  </ItemGroup>
+  <ItemGroup>
+    <Content Include="Properties\Default.rd.xml" />
+    <Content Include="Assets\LockScreenLogo.scale-200.png" />
+    <Content Include="Assets\SplashScreen.scale-200.png" />
+    <Content Include="Assets\Square150x150Logo.scale-200.png" />
+    <Content Include="Assets\Square44x44Logo.scale-200.png" />
+    <Content Include="Assets\Square44x44Logo.targetsize-24_altform-unplated.png" />
+    <Content Include="Assets\StoreLogo.png" />
+    <Content Include="Assets\Wide310x150Logo.scale-200.png" />
+  </ItemGroup>
+  <ItemGroup>
+    <ApplicationDefinition Include="App.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+    </ApplicationDefinition>
+    <Page Include="MainPage.xaml">
+      <Generator>MSBuild:Compile</Generator>
+      <SubType>Designer</SubType>
+    </Page>
+  </ItemGroup>
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NETCore.UniversalWindowsPlatform">
+      <Version>6.2.12</Version>
+    </PackageReference>
+  </ItemGroup>
+  <ItemGroup>
+    <None Include="UWPClient_TemporaryKey.pfx" />
+  </ItemGroup>
+  <PropertyGroup Condition=" '$(VisualStudioVersion)' == '' or '$(VisualStudioVersion)' &lt; '14.0' ">
+    <VisualStudioVersion>14.0</VisualStudioVersion>
+  </PropertyGroup>
+  <Import Project="$(MSBuildExtensionsPath)\Microsoft\WindowsXaml\v$(VisualStudioVersion)\Microsoft.Windows.UI.Xaml.CSharp.targets" />
+  <!-- To modify your build process, add your task inside one of the targets below and uncomment it. 
+       Other similar extension points exist, see Microsoft.Common.targets.
+  <Target Name="BeforeBuild">
+  </Target>
+  <Target Name="AfterBuild">
+  </Target>
+  -->
+</Project>

Tasks/Lab6/UWPClient/UWPClient.sln

@@ -0,0 +1,51 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 16
+VisualStudioVersion = 16.0.34902.97
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "UWPClient", "UWPClient.csproj", "{D7CF1F46-74E2-48E1-A43C-4288A98F0193}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|ARM = Debug|ARM
+		Debug|ARM64 = Debug|ARM64
+		Debug|x64 = Debug|x64
+		Debug|x86 = Debug|x86
+		Release|ARM = Release|ARM
+		Release|ARM64 = Release|ARM64
+		Release|x64 = Release|x64
+		Release|x86 = Release|x86
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{D7CF1F46-74E2-48E1-A43C-4288A98F0193}.Debug|ARM.ActiveCfg = Debug|ARM
+		{D7CF1F46-74E2-48E1-A43C-4288A98F0193}.Debug|ARM.Build.0 = Debug|ARM
+		{D7CF1F46-74E2-48E1-A43C-4288A98F0193}.Debug|ARM.Deploy.0 = Debug|ARM
+		{D7CF1F46-74E2-48E1-A43C-4288A98F0193}.Debug|ARM64.ActiveCfg = Debug|ARM64
+		{D7CF1F46-74E2-48E1-A43C-4288A98F0193}.Debug|ARM64.Build.0 = Debug|ARM64
+		{D7CF1F46-74E2-48E1-A43C-4288A98F0193}.Debug|ARM64.Deploy.0 = Debug|ARM64
+		{D7CF1F46-74E2-48E1-A43C-4288A98F0193}.Debug|x64.ActiveCfg = Debug|x64
+		{D7CF1F46-74E2-48E1-A43C-4288A98F0193}.Debug|x64.Build.0 = Debug|x64
+		{D7CF1F46-74E2-48E1-A43C-4288A98F0193}.Debug|x64.Deploy.0 = Debug|x64
+		{D7CF1F46-74E2-48E1-A43C-4288A98F0193}.Debug|x86.ActiveCfg = Debug|x86
+		{D7CF1F46-74E2-48E1-A43C-4288A98F0193}.Debug|x86.Build.0 = Debug|x86
+		{D7CF1F46-74E2-48E1-A43C-4288A98F0193}.Debug|x86.Deploy.0 = Debug|x86
+		{D7CF1F46-74E2-48E1-A43C-4288A98F0193}.Release|ARM.ActiveCfg = Release|ARM
+		{D7CF1F46-74E2-48E1-A43C-4288A98F0193}.Release|ARM.Build.0 = Release|ARM
+		{D7CF1F46-74E2-48E1-A43C-4288A98F0193}.Release|ARM.Deploy.0 = Release|ARM
+		{D7CF1F46-74E2-48E1-A43C-4288A98F0193}.Release|ARM64.ActiveCfg = Release|ARM64
+		{D7CF1F46-74E2-48E1-A43C-4288A98F0193}.Release|ARM64.Build.0 = Release|ARM64
+		{D7CF1F46-74E2-48E1-A43C-4288A98F0193}.Release|ARM64.Deploy.0 = Release|ARM64
+		{D7CF1F46-74E2-48E1-A43C-4288A98F0193}.Release|x64.ActiveCfg = Release|x64
+		{D7CF1F46-74E2-48E1-A43C-4288A98F0193}.Release|x64.Build.0 = Release|x64
+		{D7CF1F46-74E2-48E1-A43C-4288A98F0193}.Release|x64.Deploy.0 = Release|x64
+		{D7CF1F46-74E2-48E1-A43C-4288A98F0193}.Release|x86.ActiveCfg = Release|x86
+		{D7CF1F46-74E2-48E1-A43C-4288A98F0193}.Release|x86.Build.0 = Release|x86
+		{D7CF1F46-74E2-48E1-A43C-4288A98F0193}.Release|x86.Deploy.0 = Release|x86
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {6924C1B2-1829-4014-A03E-DFD4F95CFDA6}
+	EndGlobalSection
+EndGlobal

Tasks/Lab6/server5.c

@@ -0,0 +1,159 @@
+// Server side C/C++ program to demonstrate Socket programming
+// adopted by Karl Rege from sample of
+// https://www.geeksforgeeks.org/socket-programming-cc/
+// for windows: Link with ws2_32 library.
+// gcc server.c -lws2_32 -o server.exe
+// platform: Linux and Windows
+
+#ifdef _MSC_VER
+    #include <Ws2tcpip.h>
+    #include <Mswsock.h>
+#else
+    #include <unistd.h>
+#endif
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#ifdef WIN32
+    #include <Winsock2.h>
+    #include <windows.h> 
+    #include <wininet.h>
+    #include <stdlib.h>
+    typedef int socklen_t;
+#else
+    #include <unistd.h>
+    #include <errno.h>
+    #include <sys/socket.h>
+    #include <sys/ioctl.h>
+    #include <netinet/in.h>
+    #include <netinet/tcp.h>
+    #include <netdb.h>
+#endif
+
+#define BUFSIZE 1024
+#define PORT 8000
+char* rank[10] = {
+		"Mueller Stefan;02:31:14\n",
+		"Marti Adrian;02:30:09\n",
+		"Kiptum Daniel;02:11:31\n",
+		"Ancay Tarcis;02:20:02\n",
+		"Kreibuhl Christian;02:21:47\n",
+		"Ott Michael;02:33:48\n",
+		"Menzi Christoph;02:27:26\n",
+		"Oliver Ruben;02:32:12\n",
+		"Elmer Beat;02:33:53\n",
+		"Kuehni Martin;02:33:36\n"
+};
+#ifdef WIN32
+char* GetErrorMessage(DWORD dwErrorCode) { 
+    static char* pBuffer = NULL;
+    DWORD cchBufferLength = 200;
+    if (pBuffer == NULL) { // only allocate once
+        pBuffer = malloc(cchBufferLength*sizeof(char));
+    }
+    pBuffer[0] = '\0';
+    DWORD cchMsg = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
+                                 NULL, dwErrorCode, MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
+                                 pBuffer, cchBufferLength, NULL);
+    return pBuffer ;
+}
+#else
+int GetLastError() {
+    return errno;
+}
+char* GetErrorMessage(int dwErrorCode) { 
+    return strerror(dwErrorCode);
+}    
+#endif
+
+void sleep_ms(int milliseconds) { // cross-platform sleep function
+#ifdef WIN32
+    Sleep(milliseconds);
+#else
+    usleep(milliseconds * 1000);
+#endif
+}
+
+void error(char* msg){
+    int err = GetLastError();
+    fprintf(stderr,"%s \n",msg);
+    fprintf(stderr,"ERROR %d %s \n",err, GetErrorMessage(err));
+}
+
+// send data immediately but degrades performance
+void send_nodelay(int sock, char* msg, int len, int d) {
+    int flag = 1; 
+    setsockopt(sock, IPPROTO_TCP, TCP_NODELAY, (char *) &flag, sizeof(int));
+    send(sock, msg, len , d);
+    flag = 0; 
+    setsockopt(sock, IPPROTO_TCP, TCP_NODELAY, (char *) &flag, sizeof(int));
+    sleep_ms(1);  // to give the socket thread the time to send
+}
+
+int main(int argc, char const *argv[]) {
+    int server_fd, sock, valread;
+    struct sockaddr_in address;
+    int i, opt = 1;
+    int addrlen = sizeof(address);
+    char buffer[BUFSIZE] = {0};
+
+#ifdef WIN32
+    // Initialize Winsock
+    WSADATA wsaData;
+    if (WSAStartup(MAKEWORD(2,2), &wsaData) != 0) {
+        error("init failed");
+		exit(EXIT_FAILURE);
+    }
+#endif
+
+    // Creating socket file descriptor
+    if ((server_fd = socket(AF_INET, SOCK_STREAM, 0)) == 0) {
+        error("socket failed");
+        exit(EXIT_FAILURE);
+    }
+    
+    address.sin_family = AF_INET;
+    address.sin_addr.s_addr = INADDR_ANY;
+    address.sin_port = htons(PORT);
+       
+    // Forcefully attaching socket to the port 
+    if (bind(server_fd, (struct sockaddr *)&address, sizeof(address))<0) {
+        error("bind failed");
+        exit(EXIT_FAILURE);
+    }
+    printf("listen on port %d... \n",PORT);
+    if (listen(server_fd, 3) < 0) {
+        error("listen failed");
+        exit(EXIT_FAILURE);
+    }
+   
+    while (1) {
+		printf("accepting ...\n");
+		fflush(stdout);
+		if ((sock = accept(server_fd, (struct sockaddr *)&address, (socklen_t*)&addrlen))<0) {
+			error("accept failed");
+			continue;
+		}
+	
+	// send line
+#if defined(WIN32) || !defined(FILEDESC)
+		for (i = 0; i < 10; i++) {
+			send_nodelay(sock , rank[i] , strlen(rank[i]) , 0);
+			printf (".");
+		}
+#else
+	    int fd_copy = dup(sock);
+        FILE *write_fh = fdopen(fd_copy, "w");
+        int i;
+		for (i = 0; i < 10; i++) {   
+			fprintf(write_fh,"%s", rank[i]);
+			fflush(write_fh);
+			sleep_ms(1);
+		}
+#endif
+		printf("\nSENT: %d lines\n",i);
+		sleep_ms(100);
+		shutdown (sock,2);
+	}
+    return 0;
+}

zhaw-dnet2.code-workspace

@@ -9,6 +9,9 @@
         },
         {
             "path": "./Tasks/UrlTester"
+        },
+        {
+            "path": "./Tasks/Lab6"
         }
     ]
 }