HTTP2 Adapter doesn't work with gzip response

[vicenterusso]

Package

http2_adapter

Version

2.3.0

Output of flutter doctor -v

[!] Flutter (Channel stable, 3.7.12, on Fedora Linux 36 (KDE Plasma) 5.18.13-200.fc36.x86_64, locale pt_BR.UTF-8)
    • Flutter version 3.7.12 on channel stable at /home/vicente/fvm/versions/3.7.12
    ! Warning: `dart` on your path resolves to /home/linuxbrew/.linuxbrew/Cellar/dart/2.17.6/libexec/bin/dart, which is not inside your current Flutter SDK checkout at /home/vicente/fvm/versions/3.7.12. Consider adding /home/vicente/fvm/versions/3.7.12/bin to the front of your path.
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 4d9e56e694 (2 months ago), 2023-04-17 21:47:46 -0400
    • Engine revision 1a65d409c7
    • Dart version 2.19.6
    • DevTools version 2.20.1
    • If those were intentional, you can disregard the above warnings; however it is recommended to use "git" directly to perform update checks and upgrades.

[✓] Android toolchain - develop for Android devices (Android SDK version 33.0.0)
    • Android SDK at /home/vicente/Android/Sdk
    • Platform android-33, build-tools 33.0.0
    • Java binary at: /opt/android-studio/jre/bin/java
    • Java version OpenJDK Runtime Environment (build 11.0.12+0-b1504.28-7817840)
    • All Android licenses accepted.

[✓] Chrome - develop for the web
    • Chrome at google-chrome

[✗] Linux toolchain - develop for Linux desktop
    ✗ clang++ is required for Linux development.
      It is likely available from your distribution (e.g.: apt install clang), or can be downloaded from https://releases.llvm.org/
    ✗ CMake is required for Linux development.
      It is likely available from your distribution (e.g.: apt install cmake), or can be downloaded from https://cmake.org/download/
    ✗ ninja is required for Linux development.
      It is likely available from your distribution (e.g.: apt install ninja-build), or can be downloaded from https://github.com/ninja-build/ninja/releases
    • pkg-config version 1.8.0
    ✗ GTK 3.0 development libraries are required for Linux development.
      They are likely available from your distribution (e.g.: apt install libgtk-3-dev)

[✓] Android Studio (version 2021.2)
    • Android Studio at /opt/android-studio
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 11.0.12+0-b1504.28-7817840)

[✓] VS Code (version 1.79.2)
    • VS Code at /usr/share/code
    • Flutter extension version 3.66.0

[✓] Connected device (3 available)
    • sdk gphone64 x86 64 (mobile) • emulator-5554 • android-x64    • Android 12 (API 31) (emulator)
    • Linux (desktop)              • linux         • linux-x64      • Fedora Linux 36 (KDE Plasma) 5.18.13-200.fc36.x86_64
    • Chrome (web)                 • chrome        • web-javascript • Google Chrome 109.0.5414.74

[✓] HTTP Host Availability
    • All required HTTP hosts are available

! Doctor found issues in 2 categories.

Dart Version

2.19.6

Steps to Reproduce

Any response with compressed content will throw an error "Unexpected character"

Expected Result

Any response with compressed content should be uncompressed automatically

Actual Result

I have no specific logs, just a DioExceptionType.unknown

[AlexV525]

Could you identify if the http2 package works with GZIP responses? If yes, then it's our adapter's issue, otherwise, it's caused by that package.

[vicenterusso]

I believe that http2 doesnt support automatic gzip decompression.

dart-lang/http#1357