Get address and port from DatagramPacket : DatagramPacket « Network Protocol « Java

1. Java
2. Network Protocol
3. DatagramPacket

Get address and port from DatagramPacket

import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;

class Main {
  private final static int BUFSIZE = 20;

  public static void main(String args[]) throws Exception {
    int port = Integer.parseInt(args[0]);
    DatagramSocket ds = new DatagramSocket(port);
    byte buffer[] = new byte[BUFSIZE];
    while (true) {
      DatagramPacket dp = new DatagramPacket(buffer, buffer.length);

      ds.receive(dp);

      InetAddress ia = dp.getAddress();
      System.out.println(ia);

      System.out.println(dp.getPort());
    }
  }
}

 

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