参考 : java测试rtsp地址连接状态，测试RTSP连接状态是否成功，java如何测试rtsp地址连接是否成功_rtsp地址测试-CSDN博客

import java.net.Socket;

public class RTSPUtils {
    
    // 设置连接超时时间为1秒
    private static final int TIMEOUT_MS = 1000;

    public static boolean RtspStatus(String ip, Integer port) {
        try (Socket socket = new Socket()) {
            socket.connect(new java.net.InetSocketAddress(ip, port), TIMEOUT_MS);
            if (!socket.isConnected()) {
                return false;
            }
            return true;
        } catch (Exception e) {
            e.printStackTrace();
            return false;
        }
    }
}