expo-cronet

Expo config plugin to enable Cronet for React Native networking, bringing HTTP/3 (QUIC) support to your app.

Installation

npx expo install expo-cronet

Setup

Add the plugin to your app.json or app.config.js:

{
  "expo": {
    "plugins": ["expo-cronet"]
  }
}

Then run prebuild:

npx expo prebuild

Configuration

You can customize the Cronet configuration:

{
  "expo": {
    "plugins": [
      [
        "expo-cronet",
        {
          "provider": "play-services",
          "enableBrotli": true,
          "enableQuic": true,
          "enableHttp2": true
        }
      ]
    ]
  }
}

Options

| Option | Type | Default | Description | |--------|------|---------|-------------| | provider | 'play-services' | 'embedded' | 'play-services' | Cronet provider. play-services uses Google Play Services (smaller APK), embedded bundles Cronet in APK (~1-2MB larger) | | enableBrotli | boolean | true | Enable Brotli compression | | enableQuic | boolean | true | Enable QUIC protocol (HTTP/3) | | enableHttp2 | boolean | true | Enable HTTP/2 protocol |

How it works

This plugin modifies your Android app to use Cronet as the HTTP client:

1. Adds Cronet dependencies to build.gradle
2. Initializes CronetEngine in MainApplication.onCreate()
3. Sets a custom OkHttpClientFactory that uses Cronet

All network requests made via fetch() (both React Native's built-in and expo/fetch) will automatically use Cronet.

Requirements

• Expo SDK 52+
• Android only (iOS not supported, uses native networking)

License

MIT