2 posts about #mobile

You can forward/reverse ports on Android device using adb

I'm developing an Android app as a side project and today I learned about adb forward and adb reverse. Basically, they allow you to forward or reverse traffic to specific ports between an Android device and your development machine.

Let's say I need my app to fetch something from http://localhost:3000/some-data. When the app is running on the phone localhost refers to the phone itself, and my server is running in my dev machine. So, if I do this:

adb reverse tcp:3000 tcp:3000

Now when the app tries to access localhost:3000 it will actually reach out to my dev machine's 3000 port. Very useful if you're developing the app's backend as well (as I am).

Similarly, if I wanted to access a server inside the phone from my dev machine, I could run:

adb forward tcp:5000 tcp:5000

And now if I run curl http://localhost:5000 in my dev machine it will hit the server running on the phone. Pretty neat!

Turbo Native wrappers are generally available and working well

I've been waiting for updates to this technology for a long time and today found out that it's already available.

The website is here: https://turbo.hotwire.dev/handbook/native

And there's a cool blog post about it here: https://blog.minthesize.com/turbo-native