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ChatApplication

Chatovací program

C# .NET

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 ChatApplication
{
    public partial class Form1 : Form
    {
        Socket sck;
        EndPoint epLocal, epremote;
        byte[] buffer;
 

        public Form1()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {

            sck = new Socket(AddressFamily.InterNetwork, SocketType.Dgram, ProtocolType.Udp);
            sck.SetSocketOption(SocketOptionLevel.Socket, SocketOptionName.ReuseAddress,true);

            textlocalip.Text = Getlocalip();
            textremoteip.Text = Getlocalip();

        }
        private string Getlocalip()
          {
              IPHostEntry host;
              host = Dns.GetHostEntry(Dns.GetHostName());
              foreach (IPAddress ip in host.AddressList)
              {
                  if (ip.AddressFamily == AddressFamily.InterNetwork)
                      return ip.ToString();
              }
              return "";
               }

        private void buttonconnect_Click(object sender, EventArgs e)
        {
            epLocal = new IPEndPoint(IPAddress.Parse(textlocalip.Text), Convert.ToInt32(textlocalport.Text));
            sck.Bind(epLocal);

            epremote = new IPEndPoint(IPAddress.Parse(textremoteip.Text), Convert.ToInt32(textremoteport.Text));
            sck.Connect(epremote);

            buffer = new byte[1500];
            sck.BeginReceiveFrom(buffer, 0, buffer.Length, SocketFlags.None, ref epremote, new AsyncCallback(MessageCallBack), buffer);        
            }
         private void MessageCallBack(IAsyncResult aResult)
        {
         try
{
            byte[] receiveData = new byte[1500];
            receiveData = (byte[])aResult.AsyncState;

            ASCIIEncoding aEncoding = new ASCIIEncoding();
            string receiveMessage = aEncoding.GetString(receiveData);
             listmessage.Items.Add("Přítel: " + receiveMessage);

             buffer = new byte[1500];
             sck.BeginReceiveFrom(buffer, 0, buffer.Length, SocketFlags.None, ref epremote, new AsyncCallback(MessageCallBack), buffer);
        }
             catch (Exception ex)
             {
                 MessageBox.Show(ex.ToString());
}
    }

         private void buttonsend_Click(object sender, EventArgs e)
         {
             ASCIIEncoding aEncoding = new ASCIIEncoding();
             byte[] sendingMessage = new byte[1500];
             sendingMessage = aEncoding.GetBytes(textmessage.Text);
             sck.Send(sendingMessage);
             listmessage.Items.Add("Já: " + textmessage.Text);
             textmessage.Text = "";
         }
    }
}

Neformátovaný

Přidáno: 21.8.2015
Expirace: Neuvedeno

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Autor: David Mlčoch
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