How to run a native binary from a webapp?

[farooqkz]

Hello. For writing KaiOS version of DeltaChat, we need to run a native binary which is the core functionality of the app. How could we achieve this from the webapp?

cc @Simon-Laux

[Simon-Laux]

On rooted devices it's just android without java so it's simple, but would be nice to have some cleaner option that also works on non-rooted devices so that the app could be added to kaiOS store sometime in the future officially.

Why do we need a native binary?
Because deltachat-core-rust doesn't yet compile to wasm, and wasm might still need some extra features. Also kaiOS 2.x has no wasm support to my knowledge.

Why is there low risk?
Delta chat core is opensource and the html/frontend/ui app will be as well.
The only risk I could imagine is impact on battery, but we also have an interesst in reducing battery usage because of our android and iOS app that are based on the same core library.

[ffoxD]

I believe that the ability to run native binaries would greatly benefit app developers, KaiOS partners and KaiOS as a platform. Palm webOS, which used the same Web app approach that FirefoxOS and KaiOS do, allowed developers to integrate native code into their apps. I hope KaiOS takes this into consideration