JAVA UDP客户端服务端编写实例,
byte[] buffer=new byte[256]; //缓冲区数组
DatagramSocket socket=new DatagramSocket(port);//实例化数据报Socket
DatagramPacket packet;
System.out.println("Server start..."); //输出运行信息
while (true){
packet=new DatagramPacket(buffer,buffer.length); //实例化数据报
socket.receive(packet); //接受请求
InetAddress target=packet.getAddress();
System.out.println("Received from" target); //输出请求地址
int port=packet.getPort(); //得到接收端口
byte[] message="This is server,Who are you?".getBytes(); //服务器返回信息
packet=new DatagramPacket(message,message.length,target,port); //实例化数据报
socket.send(packet); //发送数据报
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