lehttp_overrides
A Flutter package to resolve Let's Encrypt SSL certificate problems with Android 7.1.1 and below
More information here (Italian)
Getting Started
To enable the fix you need to add this line at the beginning of your project:
import 'package:lehttp_overrides/lehttp_overrides.dart';
void main() {
if (Platform.isAndroid) {
HttpOverrides.global = LEHttpOverrides();
}
runApp(const MyApp());
}
This works if you are using ISRG Root X1 certificate path by adding ISRG Root X1 CA to certificate store.
This is harmless on Android > 7.1.1 because the system already has it.
An optional parameter of the constructor allowExpiredDSTX3 (defaults: false) allows to accept as valid the DST Root CA X3 expired certificate. OpenSSL >= 1.1 should not trigger this check, but old Android versions still need it.
My suggestion is to leave this disabled and use ISRG Root X1 certiicate path.
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