网络编程(UDP传输优化)
* 接收端Receive
DatagramSocket socket = new DatagramSocket(6666); //创建socket相当于创建码头
DatagramPacket packet = new DatagramPacket(new byte[1024], 1024);//创建packet相当于创建集装箱
while(true) {
socket.receive(packet); //接收货物
byte[] arr = packet.getData();
int len = packet.getLength();
String ip = packet.getAddress().getHostAddress();
System.out.println(ip + ":" + new String(arr,0,len));
}
* 发送端Send
DatagramSocket socket = new DatagramSocket(); //创建socket相当于创建码头
Scanner sc = new Scanner(System.in);
while(true) {
String str = sc.nextLine();
if("quit".equals(str)) //如果输入quit则停止
break;
DatagramPacket packet = //创建packet相当于创建集装箱
new DatagramPacket(str.getBytes(), str.getBytes().length, InetAddress.getByName("127.0.0.1"), 6666);
socket.send(packet); //发货
}
//关闭连接
socket.close();
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