使用 JSch 的 Android 应用程序 VPN 客户端连接到我自己的 ubuntu 服务器并通过 ssh 发送所有设备流量

Question

我有一个 ubuntu vps，其中包含以下详细信息： 用户名：root 主机：abc.domain.xyz 端口：2222 密码授权

我需要我自己的 ssh 上的 vpn 客户端应用程序（如 napsternetV 或 Netmod）——只需 SSH 连接

我找到了 JSch 库，但我无法将此库连接到 Android VpnService 并通过 ssh 发送所有流量

经过多次尝试，我找到了这段代码：

public class MyVpnService extends VpnService {
    private Thread mThread;
    private boolean mIsRunning;

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {
        Log.d("soheil", "onStartCommand");

        // Start a new thread that establishes the SSH connection and routes traffic through it
        mThread = new Thread(new Runnable() {
            @Override
            public void run() {
                try {
                    // Create an SSH connection
                    JSch jsch = new JSch();
                    Session session = jsch.getSession("root", "abc.domain.xyz", 2222);
                    session.setPassword("12345");
                    session.setConfig("StrictHostKeyChecking", "no");
                    session.connect();

                    // Forward all traffic through the SSH connection
                    session.setPortForwardingR(2222, "localhost", 5678);

                    // Get the local and remote ports
                    int localPort = session.getAssignedLocalPort();
                    int remotePort = Integer.parseInt(session.getPortForwardingL()[0]);

                    // Configure the VPN interface
                    Builder builder = new Builder();
                    builder.addAddress("10.0.0.2", 24);
                    builder.addRoute("0.0.0.0", 0);
                    builder.setSession(String.valueOf(session));
                    ParcelFileDescriptor vpnInterface = builder.establish();

                    // Route all traffic through the VPN interface
                    runVpn(vpnInterface, localPort, remotePort);
                } catch (Exception e) {
                    e.printStackTrace();
                }
            }
        });
        mThread.start();

        mIsRunning = true;

        return START_STICKY;
    }

    private void runVpn(ParcelFileDescriptor vpnInterface, int localPort, int remotePort) {
        try {
            byte[] packet = new byte[4096];
            DatagramChannel tunnel = DatagramChannel.open();
            tunnel.connect(new InetSocketAddress("127.0.0.1", localPort));

            while (mIsRunning) {
                vpnInterface.read(packet);
                ByteBuffer buffer = ByteBuffer.wrap(packet);
                tunnel.write(buffer);

                buffer.clear();
                tunnel.read(buffer);
                vpnInterface.write(packet);
            }
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            try {
                if (vpnInterface != null) {
                    vpnInterface.close();
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
}

但我得到了错误：

vpnInterface.read()

和

vpnInterface.write()

和

session.getAssignedLocalPort()