?? 40b6e135fd60001d1634a073c72f607a
字號:
import java.net.*;
import java.io.*;
public class UDPClientDemo {
private DatagramSocket s;
private InetAddress hostAddress;
private byte[] buf=new byte[1000];
private DatagramPacket dp=new DatagramPacket(buf,buf.length);
public UDPClientDemo(){
try
{
s=new DatagramSocket();
hostAddress=InetAddress.getByName("localhost");
System.out.println("Client start....");
while(true)
{
String strOutMess="";
BufferedReader stdin=new BufferedReader(new InputStreamReader(System.in));
strOutMess=stdin.readLine();
if(strOutMess.equals("bye")) break;
String strOut="[Client say]:"+strOutMess;
byte[]buf=strOut.getBytes();
DatagramPacket out=new DatagramPacket(buf,buf.length,hostAddress,4200);
s.send(out);
s.receive(dp);
String strReceived="("+dp.getAddress()+":"+dp.getPort()+")"+
new String(dp.getData(),0,dp.getLength());
System.out.println(strReceived);
}
}
catch(UnknownHostException e)
{
System.out.println("未找到服務器");
System.exit(1);
}
catch(SocketException se)
{
System.out.println("打開套接字錯誤!");
se.printStackTrace();
System.exit(1);
}
catch(IOException ie)
{
System.err.println("IO error!");
}
}
/**
* @param args
*/
public static void main(String[] args) {
// TODO Auto-generated method stub
}
}
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