socket UDP

 

//receive UDP package

 

 

public class

Program

{

 

 

private const int

listenPort = 11000;

 

 

public static void

Main()

{

Socket s =

 

new

Socket(AddressFamily.InterNetworkV6, SocketType.Dgram,

ProtocolType.Udp);

IPEndPoint ipep =

 

new

IPEndPoint(IPAddress.IPv6Any, listenPort);

s.Bind(ipep);

 

 

while (true

)

{

 

 

byte[] b = new byte

[10];

s.Receive(b);

 

 

string str = System.Text.Encoding

.ASCII.GetString(b, 0, b.Length);

 

 

Console

.WriteLine(str.Trim());

 

 

 

/////////////////////////////////////////////////////////////////////////

 

 

// send UDP

class

 

Program

{

 

private const int listenPort = 11000;

 

static void Main(string[] args)

{

Socket s =

new Socket(AddressFamily.InterNetworkV6, SocketType.Dgram,

ProtocolType.Udp);

 

//IPAddress broadcast = IPAddress.Parse("fe80::216:eaff:feb1:e3c4");

IPAddress broadcast = IPAddress.Parse(

"fe80::c0b3:e4cf:44f5:32b5");

 

//IPAddress broadcast = IPAddress.Parse("192.168.1.103");

 

//IPAddress broadcast = IPAddress.Parse("10.42.43.1");

 

//IPAddress broadcast = IPAddress.Parse("::1");

 

byte[] sendbuf = Encoding.ASCII.GetBytes("hello");

IPEndPoint ep =

new IPEndPoint(broadcast, listenPort);

 

while (true)

{

s.SendTo(sendbuf, ep);

}

 

Console.WriteLine("Message sent to the broadcast address");

}