Android and iOS support

[quininer]

I think we can look at how chromium is implemented.

https://github.com/chromium/chromium/blob/master/net/cert/cert_verify_proc_android.cc
https://github.com/chromium/chromium/blob/master/net/cert/cert_verify_proc_ios.cc

[buraktabn]

Any updates on this?

[djc]

Nope -- but if you're willing to contribute I'm happy to provide any guidance you need.

[buraktabn]

TBH, I was planning on it because of paritytech/subxt#563. However, using webpki seems to work on Android.

[cpu]

Android and iOS are both supported by https://github.com/rustls/rustls-platform-verifier

Is there user demand for a native-certs solution or should we suggest users consider using the platform verifier instead? That crate isn't quite ready for primetime but I also suspect we can get it ready sooner than we could add support for those platforms here.

[djc]

iOS support might be as easy as enabling the security-framework path for ios in addition to macos, I think?

But in general, the rustls-platform-verifier is probably a better alternative for most use cases.

[djc]

rustls-platform-verifier has been released and is probably a better option in most cases.