httptoolkit VS PCAPdroid

HTTP Toolkit, you will need to install one in your PC and another one in the emulator.

Maybe not exactly what you're looking for, but if you could side-load on windows this app should work. https://httptoolkit.com/

use https://httptoolkit.com/ but it's getting a bit off-topic :)

I run HTTP Toolkit (https://httptoolkit.com) which passed $2k a couple of years back. No longer a side project, as it's made enough money for me to work on it full time for a fair while now, but it certainly started that way, and it's still a one-man show (plus many wonderful open-source contributors).

I suspect that'll be a common theme in answers here though: if you have a side project making $2k a month, in most of the world that's enough for you to go full-time and try to take it further. If you can make $2k/month on something working only part-time, you can definitely make a lot more if you focus on it.

On your questions: HTTP Toolkit is a desktop app (plus a mobile app and other components for integrations) but it's an Electron app that effectively functions as a SaaS (with a freemium subscription model) that just happens to have a component that runs on your computer. And actually getting to $2k wasn't overnight at all - it took a couple of years of slow steady slog. A few inflection points that made a notable difference (releasing rewriting support & Android support particularly) but mostly it was a matter of "just keep pushing", trusting the trajectory would keep going, and steadily grinding upwards. It's great where it is now, but it's hard work - a solo business is not for the faint of heart!

you can use tools like https://httptoolkit.com/ to check the requests

PCAPdroid (version 1.6.9): No-root network monitor and traffic dump tool for Android devices

PCAPdroid mitm (version 16): Mitm addon for PCAPdroid

https://github.com/emanuele-f/PCAPdroid is very good, shows content too (for http)

There's also PCAPdroid [1] which you can run straight from your phone with no root. Works with https traffic too when you enable the mitm setting.

[1]: https://github.com/emanuele-f/PCAPdroid

Also whenever I mess around with http stuff I like to use tools like Fiddler Classic (PC) and PCAPdroid (Android) to know what I need to do vs. what I'm sending/requesting. With this you can perform the desired action manually while capturing all the packets of that action with headers. Then when you replicate the functionality, you capture the packets again and compare both to verify that your code behaves identically/similarly to what you manually did.

Try PCAPdroid. It'll show the app as well as the destination IP.

PCAPdroid (version 1.5.1): No-root network monitor and traffic dump tool for Android devices

I'm rather fond of PCAPdroid, just leave everything to default and start monitoring. Ideally you should only see ~100b be sent via netd and nothing else if you are not using your phone (and disabled background update checks in say NetGuard, Firefox, etc.). It takes up the VPN slot so be aware of that.

PCAPdroid should do the same thing