Add Ping command

PlantBox.Broker/Program.cs

@@ -1,4 +1,8 @@
-using System;
+using PlantBox.Shared.Communication;
+using PlantBox.Shared.Communication.Commands;
+using System;
+using System.Net;
+using System.Net.Sockets;
 
 namespace PlantBox.Broker
 {
@@ -7,6 +11,29 @@ namespace PlantBox.Broker
         static void Main(string[] args)
         {
             Console.WriteLine("Hello World!");
+            var listener = new TcpListener(IPAddress.Any, Connection.TCP_PORT);
+            listener.Start();
+
+            while (true)
+            {
+                try
+                {
+                    var client = listener.AcceptTcpClient();
+                    var stream = new CommandStream(client.GetStream());
+
+                    var command = stream.Receive();
+                    Console.WriteLine(command);
+
+                    var ping = new Ping().Deserialize(command.Arguments);
+                    Console.WriteLine($"Ping: {ping.Message}");
+
+                    stream.Send(new Ping(ping.Message).ToCommandPacket(Command.Ping, command.ID));
+                }
+                catch (Exception)
+                {
+
+                }
+            }
         }
     }
 }

PlantBox.Shared/Communication/Commands/CommandSerializable.cs

@@ -8,7 +8,7 @@ namespace PlantBox.Shared.Communication.Commands
     /// A class serializable to a <see cref="CommandPacket"/>
     /// </summary>
     /// <typeparam name="T"></typeparam>
-    public abstract class CommandSerializable<T>
+    public abstract class CommandSerializable<T> where T : new()
     {
         /// <summary>
         /// Serialize all the values in a string <see cref="Array"/>,

PlantBox.Shared/Communication/Commands/Ping.cs

@@ -0,0 +1,41 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace PlantBox.Shared.Communication.Commands
+{
+    public class Ping : CommandSerializable<Ping>
+    {
+        public string Message { get; set; }
+
+        public Ping()
+        {
+
+        }
+        public Ping(string message)
+        {
+            Message = message;
+        }
+
+        public override Ping Deserialize(string[] arguments)
+        {
+            if (arguments == null)
+            {
+                throw new ArgumentNullException(nameof(arguments));
+            }
+            if (arguments.Length < 1)
+            {
+                throw new ArgumentException($"Excepted at least 1 argument, got {arguments.Length}");
+            }
+
+            Message = arguments[0];
+
+            return this;
+        }
+
+        public override string[] Serialize()
+        {
+            return new string[] { Message };
+        }
+    }
+}