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using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Diagnostics;
using System.Drawing;
using System.Linq;
using System.Net;
using System.Net.Sockets;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
namespace _05_SocketServidorUDP {
public partial class Form1 : Form {
public Form1() {
InitializeComponent();
}
private void button1_Click(object sender, EventArgs e) {
int numDatos;
byte[] byteRecibidos = new byte[1000];
byte[] byteEnviados = new byte[1000];
Socket miSocketServidor = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
IPEndPoint miDireccionEscucha = new IPEndPoint(IPAddress.Any, 2000);
try {
miSocketServidor.Bind(miDireccionEscucha);
IPEndPoint receptor = new IPEndPoint(IPAddress.Any, 0);
EndPoint remoto = (EndPoint)(receptor);
//recepción de datos
numDatos = miSocketServidor.ReceiveFrom(byteRecibidos, ref remoto);
Debug.WriteLine("Datos recibidos del cliente: " + remoto.ToString());
this.label1.Text = Encoding.ASCII.GetString(byteRecibidos, 0, numDatos);
//envío de datos
byteEnviados = Encoding.ASCII.GetBytes(this.textBox1.Text);
miSocketServidor.SendTo(byteEnviados, byteEnviados.Length, SocketFlags.None, remoto);
miSocketServidor.Close();
}
catch (Exception error) {
Debug.WriteLine("Error: {0}", error.ToString());
}
}
}
}

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