How to set it up as VPN?

[cornzzy]

Followed the doc and ran the local server via the .aar file and x/mobileproxy on flutter android:

  override fun onMethodCall(call: MethodCall, result: Result) {
    if (call.method == "initProxy") {
      val dialer = StreamDialer("split:2|ss://[email protected]:5/?prefix=HTTP%2F1.1%20")
      val proxy = Mobileproxy.runProxy("localhost:0", dialer)
      
      result.success(proxy.address())
    } else {
      result.notImplemented()
    }
  }

And in dart used the returned address for http:

HttpClient client = HttpClient();
client.findProxy = (Uri uri) {
  return "PROXY $_address";
};

The proxy server works great and testing it shows that it did connect to shadowsocks server but now how do I go about passing it to tun? The .aar file has a limited set of functions. I guess I need to import network too? The following doesn't output to aar:
gomobile bind -ldflags='-s -w' -target=android -androidapi=21 -o all.aar github.com/Jigsaw-Code/outline-sdk/network

with this error:

gobind\go_networkmain.go:35:24: cannot use (*proxynetwork_PacketResponseReceiver)(_param_respWriter_ref) (value of type *proxynetwork_PacketResponseReceiver) as network.PacketResponseReceiver value in assignment: *proxynetwork_PacketResponseReceiver does not implement network.PacketResponseReceiver (missing method WriteFrom)

How do I create tun and pass the proxy server to it?