使用的是udp协议。可以直接使用
import java.net.*;
import java.io.*;
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){
if("886".equals(line))
break;
byte [] buf=line.getBytes();
DatagramPacket dp=new DatagramPacket(buf,buf.length,InetAddress.getByName("223.247.190.204"),10004);
ds.send(dp);
}
}catch(IOException e)
{
throw new RuntimeException("fail");
}
}
}
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();
String data=new String(dp.getData(),0,dp.getLength());
System.out.println(ip+":"+data);
}
}
catch(IOException ex)
{
throw new RuntimeException("fail");
}
}
}
public class LiaoTian {
public static void main(String[] args) throws IOException{
DatagramSocket sendSocket=new DatagramSocket();
DatagramSocket receSocket =new DatagramSocket(10004);
new Thread(new Send(sendSocket)).start();
new Thread(new Rece(receSocket)).start();
}
}
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