?? dgmrecv.java
字號:
// 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() );
}
}
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