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import java.io.*; import java.net.*;
/** * demonstrates how to write datagram server * * @see datagramclientdemo ***/ public class datagramserverdemo { public static void main(string args[]) throws exception { byte data[] = new byte[20];
// client on port 4444, server on 5555 datagramsocket socket = new datagramsocket(5555); datagrampacket packet = new datagrampacket(data, 20);
socket.receive(packet); string received = new string(packet.getdata(), 0); system.out.println(received);
string sendmsg="hello back"; sendmsg.getbytes(0, sendmsg.length(), data, 0); packet = new datagrampacket(data, 20, packet.getaddress(), packet.getport()); socket.send(packet); } }
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