Csharp/C Sharp/Network/Udp Server

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Binary Udp Server

<source lang="csharp"> /* C# Network Programming by Richard Blum Publisher: Sybex ISBN: 0782141765

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using System; using System.Net; using System.Net.Sockets; using System.Text; public class BinaryUdpSrvr {

  public static void Main()
  {
     byte[] data = new byte[1024];
     IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 9050);
     UdpClient newsock = new UdpClient(ipep);
     Console.WriteLine("Waiting for a client...");
     IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);
     data = newsock.Receive(ref sender);
     Console.WriteLine("Message received from {0}:", sender.ToString());
     Console.WriteLine(Encoding.ASCII.GetString(data, 0, data.Length));
     string welcome = "Welcome to my test server";
     data = Encoding.ASCII.GetBytes(welcome);
     newsock.Send(data, data.Length, sender);
     byte[] data1 = newsock.Receive(ref sender);
     int test1 = BitConverter.ToInt32(data1, 0);
     Console.WriteLine("test1 = {0}", test1);
     byte[] data2 = newsock.Receive(ref sender);
     double test2 = BitConverter.ToDouble(data2, 0);
     Console.WriteLine("test2 = {0}", test2);
     byte[] data3 = newsock.Receive(ref sender);
     int test3 = BitConverter.ToInt32(data3, 0);      
     Console.WriteLine("test3 = {0}", test3);
     byte[] data4 = newsock.Receive(ref sender);
     bool test4 = BitConverter.ToBoolean(data4, 0);
     Console.WriteLine("test4 = {0}", test4.ToString());
     byte[] data5 = newsock.Receive(ref sender);
     string test5 = Encoding.ASCII.GetString(data5);
     Console.WriteLine("test5 = {0}", test5);
     newsock.Close();
  }

}

      </source>


Simple Udp Server

<source lang="csharp"> /* C# Network Programming by Richard Blum Publisher: Sybex ISBN: 0782141765

  • /

using System; using System.Net; using System.Net.Sockets; using System.Text; public class SimpleUdpSrvr {

  public static void Main()
  {
     int recv;
     byte[] data = new byte[1024];
     IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 9050);
     Socket newsock = new Socket(AddressFamily.InterNetwork,
                     SocketType.Dgram, ProtocolType.Udp);
     newsock.Bind(ipep);
     Console.WriteLine("Waiting for a client...");
     IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);
     EndPoint Remote = (EndPoint)(sender);
     recv = newsock.ReceiveFrom(data, ref Remote);
     Console.WriteLine("Message received from {0}:", Remote.ToString());
     Console.WriteLine(Encoding.ASCII.GetString(data, 0, recv));
     string welcome = "Welcome to my test server";
     data = Encoding.ASCII.GetBytes(welcome);
     newsock.SendTo(data, data.Length, SocketFlags.None, Remote);
     while(true)
     {
        data = new byte[1024];
        recv = newsock.ReceiveFrom(data, ref Remote);
      
        Console.WriteLine(Encoding.ASCII.GetString(data, 0, recv));
        newsock.SendTo(data, recv, SocketFlags.None, Remote);
     }
  }

}

      </source>


Test Udp Server

<source lang="csharp"> /* C# Network Programming by Richard Blum Publisher: Sybex ISBN: 0782141765

  • /

using System; using System.Net; using System.Net.Sockets; using System.Text; public class TestUdpSrvr {

  public static void Main()
  {
     int recv;
     byte[] data = new byte[1024];
     IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 9050);
     Socket newsock = new Socket(AddressFamily.InterNetwork,
                     SocketType.Dgram, ProtocolType.Udp);
     newsock.Bind(ipep);
     Console.WriteLine("Waiting for a client...");
     IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);
     EndPoint tmpRemote = (EndPoint)(sender);
     recv = newsock.ReceiveFrom(data, ref tmpRemote);
     Console.WriteLine("Message received from {0}:", tmpRemote.ToString());
     Console.WriteLine(Encoding.ASCII.GetString(data, 0, recv));
     string welcome = "Welcome to my test server";
     data = Encoding.ASCII.GetBytes(welcome);
     newsock.SendTo(data, data.Length, SocketFlags.None, tmpRemote);
     for(int i = 0; i < 5; i++)
     {
        data = new byte[1024];
        recv = newsock.ReceiveFrom(data, ref tmpRemote);
        Console.WriteLine(Encoding.ASCII.GetString(data, 0, recv));
     }
     newsock.Close();
  }

}

      </source>


Udp Server Sample

<source lang="csharp"> /* C# Network Programming by Richard Blum Publisher: Sybex ISBN: 0782141765

  • /

using System; using System.Net; using System.Net.Sockets; using System.Text; public class UdpSrvrSample {

  public static void Main()
  {
     byte[] data = new byte[1024];
     IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 9050);
     UdpClient newsock = new UdpClient(ipep);
     Console.WriteLine("Waiting for a client...");
     IPEndPoint sender = new IPEndPoint(IPAddress.Any, 0);
     data = newsock.Receive(ref sender);
     Console.WriteLine("Message received from {0}:", sender.ToString());
     Console.WriteLine(Encoding.ASCII.GetString(data, 0, data.Length));
     string welcome = "Welcome to my test server";
     data = Encoding.ASCII.GetBytes(welcome);
     newsock.Send(data, data.Length, sender);
     while(true)
     {
        data = newsock.Receive(ref sender);
      
        Console.WriteLine(Encoding.ASCII.GetString(data, 0, data.Length));
        newsock.Send(data, data.Length, sender);
     }
  }

}

      </source>