Create a Socket server in C # and connect with Javascript

It turns out that I need to make a server to communicate clients with each other but in C #.

This is the code

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Net;             
using System.Net.Sockets;

namespace socket
{
    class Program
    {
        static void Main(string[] args)
        {
            Socket socket = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
            IPEndPoint direccion = new IPEndPoint(IPAddress.Any, 1234);

            byte[] payload;
            try
            {
                payload = new byte[255];
                socket.Bind(direccion); 
                socket.Listen(1); 
                Console.WriteLine("Escuchando...");
                Socket listen = socket.Accept();
                int a = listen.Receive(payload, 0, payload.Length, 0);
                Array.Resize(ref payload, a);
                Console.WriteLine("Cliente dice: " + Encoding.Default.GetString(payload)); 
                Console.WriteLine("Conectado con exito");
                socket.Close();

            }
            catch (Exception error)
            {
                Console.WriteLine("Error: {0}", error.ToString());
            }
            Console.ReadLine();
        }

    }
}

Ok, up there I think everything is fine, because to connect to the server I use this Javascript code

        var Server;
        $(document).ready(function() {

            Server = new FancyWebSocket('ws://192.168.1.10:1234');

            Server.bind('open', function() {
                console.log("Cliente conectado");
            });

            Server.bind('close', function( data ) {
                console.log("Cliente desconectado");
            });

            Server.bind('message', function( payload ) {
                console.log(payload);
            });
            Server.connect();

            // ACA ES DONDE ME DA EL ERROR
            Server.send( 'message', 'Hola' );
        });

I'm using jQuery and a library called FancyWebSocket.js

Ok when I execute the JS code to connect to the socket, this response gives me on the server

And this gives me the client

The server seems to work perfectly, but now, how to send messages to the server and send them to the rest of the connected clients?