java - Java (Android) 中的 UDP 客户端，用于从 X-Plane 12 获取数据

Question

我尝试用Java从X-Plane 12读取UDP流。这是我尝试的方法:

public class EchoClient {
@Test
public void echo() throws IOException {
    DatagramSocket socket;
    InetAddress address;

    byte[] buf;
    socket = new DatagramSocket();
    address = InetAddress.getByName("localhost");
    String msg = "TEST";
    buf = msg.getBytes();
    DatagramPacket packet
            = new DatagramPacket(buf, buf.length, address, 49000);
    socket.send(packet);
    packet = new DatagramPacket(buf, buf.length);
    System.out.println("hi there");
    while(true) {
        socket.receive(packet); // it "stops" here... without an error 
        String received = new String(
                packet.getData(), 0, packet.getLength());
        System.out.println(received);
    }
}}

X-Plane 正在运行并且 UDP 选项已激活 - 但我的程序在控制台上没有打印任何内容..并且它会永远运行(虽然 true)

Answer 1

接收被阻止并等待接收数据包。您之前发送的数据包被丢弃在地板上，因为没有人在听。