package cn.charp3;
import java.net.DatagramSocket;
import java.net.SocketException;
public class charDemo {
public static void main(String[] args) throws Exception {
DatagramSocket send=new DatagramSocket();
DatagramSocket rece=new DatagramSocket(10001);
new Thread(new Send(send)).start();
new Thread(new Rece(rece)).start();
}
}
package cn.charp3;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
import java.net.InetAddress;
public class Send implements Runnable {
private DatagramSocket ds;
public Send(DatagramSocket ds)
{
this.ds=ds;
}
@Override
public void run() {
try {
BufferedReader bufr=new BufferedReader(new InputStreamReader(System.in));
String line=null;
while((line=bufr.readLine())!=null)
{
byte[] buf=line.getBytes();
DatagramPacket dp=new DatagramPacket(buf,buf.length,InetAddress.getByName("192.168.0.255"), 10001);
ds.send(dp);
}
} catch (Exception e) {
// TODO: handle exception
}
}
}
package cn.charp3;
import java.net.DatagramPacket;
import java.net.DatagramSocket;
public class Rece implements Runnable {
private DatagramSocket ds;
public Rece(DatagramSocket ds)
{
this.ds=ds;
}
@Override
public void run() {
try{
while(true)
{
byte[] buf=new byte[1024];
DatagramPacket dp=new DatagramPacket(buf,buf.length);
ds.receive(dp);
String ip=dp.getAddress().getHostAddress();
int port=dp.getPort();
String text=new String(dp.getData(),0,dp.getLength());
System.out.println(ip+""+port+""+text);
if(text.equals("886")){
System.out.println(ip+"退出了");
}
}
}catch(Exception e)
{
}
}
}