?? clientserver.java
字號:
import java.io.*;
import java.net.*;
public class ClientServer
{
public static void main(String args[])
{
DatagramSocket UdpClientSocket;
DatagramPacket ClientPacket;
InetAddress RemoteHost;
int RemotePort;
byte dataBuf[]=new byte[512];
String Datagram,s;
/* if(args.length<3)
{
System.out.println("請輸入本地端口號,遠程服務器主機名,服務器端口號");
System.exit(0);
}*/
try{
UdpClientSocket=new DatagramSocket(8000);
RemoteHost=InetAddress.getByName("dcx");
RemotePort=8000;
Datagram=new String("This mail is from"+InetAddress.getLocalHost().getHostName()+",give me a reicept\nif you can receive it,thank you!");
Datagram.getBytes(0,Datagram.length(),dataBuf,0);
//把字符竄型的字符變成字節型的
ClientPacket=new DatagramPacket(dataBuf,512,RemoteHost,RemotePort);
UdpClientSocket.send(ClientPacket);
//send message
for(int i=0;i<512;i++)
dataBuf[i]=0;//CLEAR
// UdpClientSocket.receive(ClientPacket);
// Datagram=new String(ClientPacket.getData());
// System.out.println("從遠程服務器主機"+ClientPacket.getAddress()+"收到如下應答信息");
// System.out.println(Datagram);
UdpClientSocket.close();
}
catch(Exception e)
{
System.err.println(e);
}
}
}
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