Parker Bond
01c70f2fb9
Summary: On iOS in React Native, immediately after successfully connecting to a WiFi network, if 4G is also on, it is possible that network requests sent via fetch get sent over 4G instead of WiFi for several seconds (between 1 and 40+ seconds depending on the device and network in my experience). If the calls are meant to be communicating with a local Wireless Device (such as a wireless router, etc.), then API calls that get sent over 4G to the internet are lost. Note that Reachability/NetInfo are saying that we are connected to a WiFi network and are not sufficient to prevent this from happening. To prevent this, I would like to be able to set an instance property that iOS exposes for network requests allowsCellularAccess to NO to ensure a request is never sent over 4G. This code needs to be able to accept a flag to allow the user to override the default value of YES, but only when they explicitly opt in to this decision. I am not sure the best place to set and pass in this value, so I created [this issue](https://github.com/react-native-community/discussions-and-proposals/issues/113), where it was recommended that I make a PR and discuss how best to do this here. Before this PR could be merged we would need to allow the NO to be configurable in some way. Additional information about the [allowsCellularAccess](https://developer.apple.com/documentation/foundation/nsurlsessionconfiguration/1409406-allowscellularaccess?language=objc) property can be found in the [Apple documentation.](https://developer.apple.com/library/archive/documentation/NetworkingInternetWeb/Conceptual/NetworkingOverview/Platform-SpecificNetworkingTechnologies/Platform-SpecificNetworkingTechnologies.html#//apple_ref/doc/uid/TP40010220-CH212-SW9) [iOS] [Added] - Ability to force network requests to use WiFi using the allowsCellularAccess property. This can ensure that network requests are sent over WiFi if communicating with a local hardware device and is accomplished by setting a flag. Default behavior of allowing network connections over cellular networks when available is unchanged. Pull Request resolved: https://github.com/facebook/react-native/pull/24242 Differential Revision: D15316760 Pulled By: cpojer fbshipit-source-id: 96df43b4eff6b4301c853df6b2e5c6e1bb1abda0
React Native
Learn once, write anywhere:
Build mobile apps with React.
Getting Started · Learn the Basics · Showcase · Contribute · Community · Support
React Native brings React's declarative UI framework to iOS and Android. With React Native, you use native UI controls and have full access to the native platform.
- Declarative. React makes it painless to create interactive UIs. Declarative views make your code more predictable and easier to debug.
- Component-Based. Build encapsulated components that manage their own state, then compose them to make complex UIs.
- Developer Velocity. See local changes in seconds. Changes to JavaScript code can be live reloaded without rebuilding the native app.
- Portability. Reuse code across iOS, Android, and other platforms.
React Native is developed and supported by many companies and individual core contributors. Find out more in our ecosystem overview.
Contents
- Requirements
- Building your first React Native app
- Documentation
- Upgrading
- How to Contribute
- Code of Conduct
- License
📋 Requirements
React Native apps may target iOS 9.0 and Android 4.1 (API 16) or newer. You may use Windows, macOS, or Linux as your development operating system, though building and running iOS apps is limited to macOS. Tools like Expo can be used to work around this.
🎉 Building your first React Native app
Follow the Getting Started guide. The recommended way to install React Native depends on your project. Here you can find short guides for the most common scenarios:
📖 Documentation
The full documentation for React Native can be found on our website.
The React Native documentation discusses components, APIs, and topics that are specific to React Native. For further documentation on the React API that is shared between React Native and React DOM, refer to the React documentation.
The source for the React Native documentation and website is hosted on a separate repo, @facebook/react-native-website.
🚀 Upgrading
Upgrading to new versions of React Native may give you access to more APIs, views, developer tools and other goodies. See the Upgrading Guide for instructions.
React Native releases are discussed in the React Native Community, @react-native-community/react-native-releases.
👏 How to Contribute
The main purpose of this repository is to continue evolving React Native core. We want to make contributing to this project as easy and transparent as possible, and we are grateful to the community for contributing bugfixes and improvements. Read below to learn how you can take part in improving React Native.
Code of Conduct
Facebook has adopted a Code of Conduct that we expect project participants to adhere to. Please read the full text so that you can understand what actions will and will not be tolerated.
Contributing Guide
Read our Contributing Guide to learn about our development process, how to propose bugfixes and improvements, and how to build and test your changes to React Native.
Open Source Roadmap
You can learn more about our vision for React Native in the Roadmap.
Good First Issues
We have a list of good first issues that contain bugs which have a relatively limited scope. This is a great place to get started, gain experience, and get familiar with our contribution process.
Discussions
Larger discussions and proposals are discussed in @react-native-community/discussions-and-proposals.
📄 License
React Native is MIT licensed, as found in the LICENSE file.
React Native documentation is Creative Commons licensed, as found in the LICENSE-docs file.