Initiate server (+Basic connection)

client/App.config

@@ -0,0 +1,8 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<configuration>
+	<appSettings>
+		<add key="SERVER_IP" value="localhost"/>
+		<add key="PORT" value="25565"/>
+		<add key="PSWD" value="password"/>
+	</appSettings>
+</configuration>

client/Game1.cs

@@ -1,10 +1,19 @@
-using Microsoft.Xna.Framework;
+using LiteNetLib;
+using LiteNetLib.Utils;
+using Microsoft.Xna.Framework;
 using Microsoft.Xna.Framework.Graphics;
+using System;
+using System.Collections.Generic;
 
 namespace client
 {
     public class Game1 : Game
     {
+        // Network
+        EventBasedNetListener listener = new();
+        NetManager client;
+        NetPeer server;
+
         // Game instances
         private Player pl1;
         private Player pl2;
@@ -23,10 +32,32 @@ namespace client
             _graphics = new GraphicsDeviceManager(this);
             Content.RootDirectory = "Content";
             IsMouseVisible = true;
+
+            Dictionary<string, string> settings = Lib.ReadAllSettings();
+            if (!settings.ContainsKey("SERVER_IP") || (settings.ContainsKey("SERVER_IP") && Lib.ReadSetting("SERVER_IP") == null))
+            {
+                Console.Error.WriteLine("Server IP missing in config file!");
+            } else if (!settings.ContainsKey("PORT") || (settings.ContainsKey("PORT") && Lib.ReadSetting("PORT") == null))
+            {
+                Console.Error.WriteLine("Port missing in config file!");
+            } else if (!settings.ContainsKey("PSWD") || (settings.ContainsKey("PSWD") && Lib.ReadSetting("PSWD") == null))
+            {
+                Console.Error.WriteLine("Server password missing in config file!");
+            }
         }
 
         protected override void Initialize()
         {
+            // Network
+            client = new NetManager(listener);
+            client.Start();
+            server = client.Connect(Lib.ReadSetting("SERVER_IP"), int.Parse(Lib.ReadSetting("PORT")), Lib.ReadSetting("PSWD"));
+            if (server == null)
+            {
+                // TODO: Replace by a error message :)
+                Exit();
+            }
+
             // Window
             Window.Title = "Pong";
 

client/Lib/Lib.cs

@@ -0,0 +1,78 @@
+using System;
+using System.Collections.Generic;
+using System.Configuration;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace client
+{
+    public class Lib
+    {
+        public static Dictionary<string, string> ReadAllSettings()
+        {
+            Dictionary<string, string> settings = new();
+            try
+            {
+                var appSettings = ConfigurationManager.AppSettings;
+
+                if (appSettings.Count == 0)
+                {
+                    Console.Error.WriteLine("AppSettings is empty.");
+                    return settings;
+                }
+                else
+                {
+                    foreach (var key in appSettings.AllKeys)
+                    {
+                        settings.Add(key, appSettings[key]);
+                    }
+                }
+                return settings;
+            }
+            catch (ConfigurationErrorsException)
+            {
+                Console.Error.WriteLine("Error reading app settings");
+                return settings;
+            }
+        }
+
+        public static string? ReadSetting(string key)
+        {
+            try
+            {
+                var appSettings = ConfigurationManager.AppSettings;
+                string? result = appSettings[key] ?? null;
+                return result;
+            }
+            catch (ConfigurationErrorsException)
+            {
+                Console.Error.WriteLine("Error reading app settings");
+                return null;
+            }
+        }
+
+        public static void AddUpdateAppSettings(string key, string value)
+        {
+            try
+            {
+                var configFile = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
+                var settings = configFile.AppSettings.Settings;
+                if (settings[key] == null)
+                {
+                    settings.Add(key, value);
+                }
+                else
+                {
+                    settings[key].Value = value;
+                }
+                configFile.Save(ConfigurationSaveMode.Modified);
+                ConfigurationManager.RefreshSection(configFile.AppSettings.SectionInformation.Name);
+            }
+            catch (ConfigurationErrorsException)
+            {
+                Console.Error.WriteLine("Error writing app settings");
+            }
+        }
+    }
+}

client/client.csproj

@@ -19,6 +19,7 @@
     <EmbeddedResource Include="Icon.bmp" />
   </ItemGroup>
   <ItemGroup>
+    <PackageReference Include="LiteNetLib" Version="0.9.5.2" />
     <PackageReference Include="MonoGame.Extended" Version="3.8.0" />
     <PackageReference Include="MonoGame.Framework.DesktopGL" Version="3.8.1.303" />
     <PackageReference Include="MonoGame.Content.Builder.Task" Version="3.8.1.303" />

server/App.config

@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8" ?>
+<configuration>
+	<appSettings>
+		<add key="PORT" value="25565"/>
+		<add key="PSWD" value="password"/>
+	</appSettings>
+</configuration>

server/Lib/Lib.cs

@@ -0,0 +1,73 @@
+using System.Configuration;
+
+namespace Server
+{
+    public class Lib
+    {
+        public static Dictionary<string, string> ReadAllSettings()
+        {
+            Dictionary<string, string> settings = new();
+            try
+            {
+                var appSettings = ConfigurationManager.AppSettings;
+
+                if (appSettings.Count == 0)
+                {
+                    Console.Error.WriteLine("AppSettings is empty.");
+                    return settings;
+                }
+                else
+                {
+                    foreach (var key in appSettings.AllKeys)
+                    {
+                        settings.Add(key, appSettings[key]);
+                    }
+                }
+                return settings;
+            }
+            catch (ConfigurationErrorsException)
+            {
+                Console.Error.WriteLine("Error reading app settings");
+                return settings;
+            }
+        }
+
+        public static string? ReadSetting(string key)
+        {
+            try
+            {
+                var appSettings = ConfigurationManager.AppSettings;
+                string? result = appSettings[key] ?? null;
+                return result;
+            }
+            catch (ConfigurationErrorsException)
+            {
+                Console.Error.WriteLine("Error reading app settings");
+                return null;
+            }
+        }
+
+        public static void AddUpdateAppSettings(string key, string value)
+        {
+            try
+            {
+                var configFile = ConfigurationManager.OpenExeConfiguration(ConfigurationUserLevel.None);
+                var settings = configFile.AppSettings.Settings;
+                if (settings[key] == null)
+                {
+                    settings.Add(key, value);
+                }
+                else
+                {
+                    settings[key].Value = value;
+                }
+                configFile.Save(ConfigurationSaveMode.Modified);
+                ConfigurationManager.RefreshSection(configFile.AppSettings.SectionInformation.Name);
+            }
+            catch (ConfigurationErrorsException)
+            {
+                Console.Error.WriteLine("Error writing app settings");
+            }
+        }
+    }
+}

server/Program.cs

@@ -0,0 +1,60 @@
+using LiteNetLib;
+using LiteNetLib.Utils;
+
+namespace Server
+{
+    public class Program
+    {
+        static EventBasedNetListener listener = new();
+        static NetManager? server;
+
+        static string? port;
+        static string? pswd;
+
+        public static void Main(string[] args)
+        {
+            server = new NetManager(listener);
+            port = Lib.ReadSetting("PORT");
+            pswd = Lib.ReadSetting("PSWD");
+
+            if (port != null && pswd != null)
+            {
+                Console.WriteLine($"Server started on port {port}");
+                server.Start(int.Parse(port));
+            }
+            else
+            {
+                Console.Error.WriteLine("Missing port or password in config file !\nClosing server...");
+                return;
+            }
+
+
+            listener.ConnectionRequestEvent += request =>
+            {
+                Console.WriteLine($"New connection request from \"{request.RemoteEndPoint}\"");
+                request.AcceptIfKey(pswd);
+            };
+
+            listener.PeerConnectedEvent += peer =>
+            {
+                Console.WriteLine("Connection accepted for: {0}", peer.EndPoint);
+                /* NetDataWriter writer = new();
+                writer.Put("Hello client!");
+                peer.Send(writer, DeliveryMethod.ReliableOrdered); */
+            };
+
+            listener.PeerDisconnectedEvent += (peer, infos) =>
+            {
+                Console.WriteLine($"{peer.EndPoint} has left.\nError code: {infos.SocketErrorCode}\nReason: {infos.Reason}");
+            };
+
+            while (!Console.KeyAvailable)
+            {
+                server.PollEvents();
+                Thread.Sleep(15);
+            }
+
+            server.Stop();
+        }
+    }
+}

server/server.csproj

@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="LiteNetLib" Version="0.9.5.2" />
+    <PackageReference Include="System.Configuration.ConfigurationManager" Version="6.0.1" />
+  </ItemGroup>
+
+</Project>

server/server.sln

@@ -0,0 +1,25 @@
+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.3.32929.385
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "server", "server.csproj", "{AB011134-CF45-4362-B3AC-5F11D9C39B80}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{AB011134-CF45-4362-B3AC-5F11D9C39B80}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{AB011134-CF45-4362-B3AC-5F11D9C39B80}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{AB011134-CF45-4362-B3AC-5F11D9C39B80}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{AB011134-CF45-4362-B3AC-5F11D9C39B80}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ExtensibilityGlobals) = postSolution
+		SolutionGuid = {B988A71C-6FD9-4115-805D-94C7CB8E3893}
+	EndGlobalSection
+EndGlobal