Client server socket programming

See more:

C#

Server coding

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Net;
using System.Net.Sockets;
namespace MultiCon
{
    class Listener
    {
        Socket s;
        public bool Listening
        {
            get;
            private set;
        }
        public int Port
        {
            get;
            private set;
        }
        public Listener(int port)
        {
            Port= port;
            s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);

        }
        public void start()
        {
            if (Listening)
                return;
            s.Bind(new IPEndPoint(0, Port));
            s.Listen(0);
            s.BeginAccept(callback, null);
            Listening = true;
        }
        public void stop()
        {
            if (!Listening)
                return;
            s.Close();
            s.Dispose();
            s = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
        }
        void callback(IAsyncResult ar)
        {
            try
            {
                Socket s = this.s.EndAccept(ar);
                if (SocketAccepted != null)
                {
                    SocketAccepted(s);
                }
                this.s.BeginAccept(callback, null);
            }
            
            catch(Exception e)
            {
                Console.WriteLine(e.Message);
            }
        }
        public delegate void SocketAcceptedHandler(Socket e);
        public event SocketAcceptedHandler SocketAccepted;
    }
}

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Net;
using System.Net.Sockets;
using System.Windows.Forms;
namespace MultiCon
{
    class Program
    {
        
        
        static void Main(string[] args)
        {
            Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Main());
        }
       
    }
}

Client Side Programming

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Net;
using System.Net.Sockets;
namespace MultiCon_C
{
    public partial class Main : Form
    {
        Socket sck;
        public Main()
        {
            InitializeComponent();
            sck = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
          
        }

        private void btnconnect_Click(object sender, EventArgs e)
        {
            sck.Connect("192.168.201.5", 22);
            MessageBox.Show("Connected");
        }

        private void btnsend_Click(object sender, EventArgs e)
        {
            int s=sck.Send(Encoding.Default.GetBytes(txtMsg.Text));
            if(s>0)
            {
                MessageBox.Show("Data Sent");
            }
        }

        private void btnclose_Click(object sender, EventArgs e)
        {
            sck.Close();
            sck.Dispose();
            Close();
        }

        private void txtMsg_TextChanged(object sender, EventArgs e)
        {

        }
    }
}

What I have tried:

I m getting this error while running the code clicking on the connect button from the client side.

System.Net.Sockets.SocketException (0x80004005): A connection attempt failed because the connected party did not properly respond after a period of time, or established connection failed because connected host has failed to respond