import java.io.IOException;import java.net.DatagramPacket;import java.net.DatagramSocket;import java.net.InetAddress;import java.net.SocketException;import java.net.UnknownHostException;import java.util.Date;
public class TestIPMSG {
public static void main(String[] args) { DatagramSocket socket; InetAddress address;
long IPMSG_SENDMSG = 0x00000020;
String SENDER = "张恩明"; String HOST = "localhost"; String MSG_CONTENT = "我要死了";
try { socket = new DatagramSocket(); address = InetAddress.getByName("192.168.1.18");// 发送给消息的地址
/** * IPMSG收发数据包的格式(一行): * * version(IPMSG版本):no(消息编号,可以用系统时间):user(发送消息的用户名): * host(发送消息的主机名):command(上述 Command 常量,可以用 | 组合多个值): * msg(消息内容) */ byte[] buffer = ("1:" + new Date().getTime() + ":" + SENDER + ":" + HOST + ":" + IPMSG_SENDMSG + ":" + MSG_CONTENT) .getBytes();
DatagramPacket packet = new DatagramPacket(buffer, buffer.length, address, 2425); socket.send(packet); // 发送报文 packet = new DatagramPacket(buffer, buffer.length); socket.receive(packet);// 接收回应
String message = new String(packet.getData()); // 得到报文信息
System.out.println(message); // 显示对方返回的信息 } catch (UnknownHostException e) { e.printStackTrace(); } catch (SocketException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); }
}
}
相关资源:UDP发送信息