Flutter VPN plugin

This plugin help developers to access VPN service in their flutter app.

The Android part was implemented by strongswan which support ikev2 protocol.
The iOS part was implemented by NEVPNManager.

Referenced from

Issues and PRs are welcome!

Installation

For Android

Modify your app/build.gradle to use abiFilter since flutter doesn't apply abiFilter for target platform yet.

android {
    ...
    buildTypes {
        ...
        release {
            ...
            ndk {
                if (!project.hasProperty('target-platform')) {
                    abiFilters 'arm64-v8a', 'armeabi-v7a', 'x86_64'
                } else {
                    def platforms = project.property('target-platform').split(',')
                    def platformMap = [
                            'android-arm'  : 'armeabi-v7a',
                            'android-arm64': 'arm64-v8a',
                            'android-x86'  : 'x86',
                            'android-x64'  : 'x86_64',
                    ]
                    abiFilters = platforms.stream().map({ e ->
                        platformMap.containsKey(e) ? platformMap[e] : e
                    }).toArray()
                }
            }
    }
}

The plugin will automatically download pre-build native libraries from here if they haven't been downloaded. If it does not work, download the libraries from link and extract to android/src/main/libs .

Android App does not support custom profile addition and certificate installation. Only server, username and password are user inputs.

For iOS

You need to open Personal VPN and Network Extensions capabilities in Xcode: see Project->Capabilities.

VPN connection errors are handled in swift code, you need to use Xcode to see connection errors if there is any.