UDP的键盘录入

package broadview;


import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
import java.net.SocketException;


public class UDP {


/**
* @UDP的键盘录入
*/
public static void main(String[] args) throws Exception {


udp_send();

udp_receive();
}
private static void udp_send() throws Exception {


DatagramSocket ds = new DatagramSocket();

BufferedReader buf = 
new BufferedReader(new InputStreamReader(System.in));

String line = null;

while((line=buf.readLine())!=null){
if("886".equals(line))
break;

byte[] b = line.getBytes();

DatagramPacket dp = new DatagramPacket(b,b.length,InetAddress.getByName("115.156.155.113"),10001);

ds.send(dp);
}
ds.close();
}

private static void udp_receive() throws Exception {


DatagramSocket ds = new DatagramSocket(10001);
while(true){
byte[] buf = new byte[1024];
DatagramPacket dp = new DatagramPacket(buf,buf.length);

ds.receive(dp);

String ip = dp.getAddress().getHostAddress();
String data = new String(dp.getData(),0,dp.getLength());
sop(ip+"::"+data);
}
//接收端想接收数据就得一直开着，所以不关
}


public static void sop(Object o){
System.out.println(o);
}


}