open62541_libs 0.0.1

Open62541 library for multiple platforms.

open62541_libs

This package intentionally contains no Dart code. Flutter apps depending on this package will contain native open62541 libraries on Android, iOS, macOS, Linux, and Windows.

This plugin bundles the open62541 library and its dependencies(mbedTLS), allowing you to integrate OPC UA functionalities seamlessly into your Flutter projects.

Versioning

This package currently uses fixed version of open62541 and mbedTLS.

Predefined options of the open62541 library

The open62541 library is built with the following options:

-DUA_ENABLE_DEBUG_SANITIZER=OFF
-DUA_LOGLEVEL=100
-DUA_ENABLE_INLINABLE_EXPORT=ON
-DUA_ENABLE_ENCRYPTION=MBEDTLS

Getting Started

Installation

Add this package to your pubspec.yaml file:

dependencies:
  open62541_libs: ^0.0.1

Replace 0.0.1 with the version you want to use.

Usage

To use the open62541 library in your Flutter project, you can import the open62541 symbols in your Dart code:

import 'dart:ffi';
void main() {
  if (Platform.isAndroid) { // android cannot support static linking by design
    lib = open62541(DynamicLibrary.open('libopen62541.so'));
  } else {
    lib = open62541(DynamicLibrary.executable()); // all symbols are embedded in the executable by the build system
  }
}

Please refer to the open62541_bindings for dart bindings to the open62541 library.

Project structure

• windows/macos/linux/ios/android: Contains the build files for building and bundling the native code library with the platform application.

• example: Contains the example code for using the open62541 library in a Flutter project.

• .github/workflows: Contains the CI/CD workflows for building and bundling the native code library with the example application.

Flutter help

For help getting started with Flutter, view our online documentation, which offers tutorials, samples, guidance on mobile development, and a full API reference.

Important notes

Macos

Enable networking, otherwise it will fail silently. '*.entitlements' file should be in the Runner folder.

	<key>com.apple.security.network.server</key>
	<true/>
	<key>com.apple.security.network.client</key>
	<true/>

Android

defaultConfig {
  applicationId = "or app id"
  minSdk = 24 // CHANGE TO THIS REQUIREMENT BY OPEN62541
  targetSdk = flutter.targetSdkVersion
  versionCode = flutter.versionCode
  versionName = flutter.versionName
}

Use shared library, android does not support static linking executable

    lib = open62541(DynamicLibrary.open('libopen62541.so'));

Included platforms

Note that, on Android, this library will bundle open62541 for all of the following platforms:

• arm64-v8a
• armeabi-v7a
• x86
• x86_64

If you don't intend to release to 32-bit x86 devices, you'll need to apply a filter in your build.gradle:

android {
    defaultConfig {
        ndk {
            abiFilters 'armeabi-v7a', 'arm64-v8a', 'x86_64'
        }
    }
}