dgmrecv.java

来自「client server using socket programing 」· Java 代码 · 共 28 行

// DgmRecv.java receives a little UDP message via DatagramPacket

import java.net.*;
import java.io.*;

public class DgmRecv
{
  static final int PORT = 3030;
  
  static final int BUF_SIZE = 128;  // arbitrary size

  public static void main(String[] args)
    throws Exception
  {
    DatagramSocket sock = new DatagramSocket(PORT);
    byte[] buf = new byte[BUF_SIZE];
    DatagramPacket pack= new DatagramPacket(buf, buf.length);

    System.out.println( "DgmRecv listener ready" );
    
    sock.receive(pack);

    System.out.println( new String(buf, 0, pack.getLength()) );
    System.out.println( " from " + pack.getAddress() );
  }
}