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  1. using System;
  2. using System.Collections.Generic;
  3. using System.ComponentModel;
  4. using System.Data;
  5. using System.Diagnostics;
  6. using System.Drawing;
  7. using System.Linq;
  8. using System.Net;
  9. using System.Net.Sockets;
  10. using System.Text;
  11. using System.Threading;
  12. using System.Threading.Tasks;
  13. using System.Windows.Forms;
  14.  
  15. namespace UDPTest
  16. {
  17.     public partial class Form1 : Form
  18.     {
  19.         public Form1()
  20.         {
  21.             InitializeComponent();
  22.         }
  23.  
  24.  
  25.         private void button1_Click(object sender, EventArgs e)
  26.         {
  27.             UdpClient server = new UdpClient(8008);
  28.             IPEndPoint remoteIPEndPoint = new IPEndPoint(IPAddress.Any, 0);
  29.             List<IPEndPoint> endPoints = new List<IPEndPoint>();
  30.             bool add = true;
  31.  
  32.             Thread serverThread = new Thread(delegate()
  33.                 {
  34.                     Thread serverReceive = new Thread(delegate()
  35.                         {
  36.                             while(true)
  37.                             {
  38.                                 byte[] receivedBytes = server.Receive(ref remoteIPEndPoint);
  39.                                 string data = Encoding.UTF8.GetString(receivedBytes);
  40.                                 MessageBox.Show(data);
  41.  
  42.                                 byte[] returned = Encoding.UTF8.GetBytes("Klient otrzymał potwierdzenie od serwera.");
  43.  
  44.                                 if(endPoints.Count < 3)
  45.                                 {
  46.                                     for (int i = 0; i < endPoints.Count; i++ )
  47.                                     {
  48.                                         if (remoteIPEndPoint.Port == endPoints[i].Port)
  49.                                             add = false;
  50.  
  51.                                     }
  52.  
  53.                                     if(add == true)
  54.                                         endPoints.Add(remoteIPEndPoint);
  55.                                 }
  56.  
  57.                                 for (int i = 0; i < endPoints.Count; i++)
  58.                                     server.Send(returned, returned.Length, endPoints[i]);
  59.  
  60.                                 add = true;
  61.  
  62.                             }
  63.  
  64.                         });
  65.  
  66.                     serverReceive.IsBackground = true;
  67.                     serverReceive.Start();
  68.  
  69.                 });
  70.  
  71.             serverThread.IsBackground = true;
  72.             serverThread.Start();
  73.  
  74.         }
  75.  
  76.         UdpClient client;
  77.         UdpClient client2;
  78.         IPEndPoint remoteIPEndPoint = new IPEndPoint(IPAddress.Any, 0);
  79.  
  80.         private void button2_Click(object sender, EventArgs e)
  81.         {
  82.             client = new UdpClient();
  83.             IPAddress address = IPAddress.Parse("127.0.0.1");
  84.             client.Connect(address, 8008);
  85.  
  86.             Thread receiveClient = new Thread(delegate()
  87.                 {
  88.                     while(true)
  89.                     {
  90.                         byte[] rcvPacket = client.Receive(ref remoteIPEndPoint);
  91.                         string rcvData = Encoding.UTF8.GetString(rcvPacket);
  92.                         MessageBox.Show("Klient: " + rcvData);
  93.                     }
  94.  
  95.                 });
  96.  
  97.             receiveClient.IsBackground = true;
  98.             receiveClient.Start();
  99.  
  100.         }
  101.  
  102.  
  103.         private void button3_Click(object sender, EventArgs e)
  104.         {
  105.             client2 = new UdpClient();
  106.             IPAddress address = IPAddress.Parse("127.0.0.1");
  107.             client2.Connect(address, 8008);
  108.  
  109.             Thread receiveClient = new Thread(delegate()
  110.                 {
  111.                     while(true)
  112.                     {
  113.                         byte[] rcvPacket = client2.Receive(ref remoteIPEndPoint);
  114.                         string rcvData = Encoding.UTF8.GetString(rcvPacket);
  115.                         MessageBox.Show("Klient2: " + rcvData);
  116.                     }
  117.  
  118.                 });
  119.  
  120.             receiveClient.IsBackground = true;
  121.             receiveClient.Start();
  122.         }
  123.  
  124.         private void button5_Click(object sender, EventArgs e)
  125.         {
  126.             sendMessage(client2, "Klient2 wysłał wiadomość.");
  127.  
  128.         }
  129.  
  130.         private void button4_Click(object sender, EventArgs e)
  131.         {
  132.             sendMessage(client, "Klient wysłał wiadomość.");
  133.         }
  134.         void sendMessage(UdpClient udp, string message)
  135.         {
  136.             byte[] sendBytes = Encoding.UTF8.GetBytes(message);
  137.             udp.Send(sendBytes, sendBytes.Length);
  138.         }
  139.  
  140.     }
  141. }
  142.  
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin
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Standard input is empty
compilation info 
prog.cs(4,14): error CS0234: The type or namespace name `Data' does not exist in the namespace `System'. Are you missing an assembly reference?
prog.cs(12,24): error CS0234: The type or namespace name `Tasks' does not exist in the namespace `System.Threading'. Are you missing an assembly reference?
prog.cs(13,14): error CS0234: The type or namespace name `Windows' does not exist in the namespace `System'. Are you missing an assembly reference?
Compilation failed: 3 error(s), 0 warnings
stdout
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Standard output is empty
https://ideone.com/0oS2H0
language:
C# (gmcs 5.20.1)
created:
9 years ago
visibility:
public

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