Summary: [Step 2 of a protocol change between desktop app and agent] The flipper agent periodically tries to connect. When it doesn't have the required certs, instead of trying to connect, it requests them from the desktop. After requesting, it just continues the loop, trying to request. The problem with that is a) the desktop can take longer than one cycle to generate and provide the certs, meaning the agent will make overlapping requests, causing confusion and it to take longer than necessary. b) the desktop can take less time than a retry cycle, but the agent will still wait before trying to connect. Fixing a) by making the agent wait for a response from the desktop before continuing attempting to reconnect. This means on the next connection attempt, it's guaranteed that the desktop is finished processing the CSR. b) remains unfixed for now, but can be dealt with separately. This changes the agent to use requestResponse, instead of fireAndForget and wait for a response from Flipper before continuing. Also added a fallback to detect old versions of Flipper/Sonar and use the oldFireAndForget method in those cases. Reviewed By: passy Differential Revision: D9179393 fbshipit-source-id: e782b303b5e441f7d6c7faa3e5acdcbfb51e5e9c
Flipper 
Flipper, formerly Sonar, is currently in the process of being renamed. This may cause some inconsistencies until everything is in place. We apologize for any inconvience caused.
Flipper is a platform for debugging mobile apps on iOS and Android. Visualize, inspect, and control your apps from a simple desktop interface. Use Flipper as is or extend it using the plugin API.
Mobile development
Flipper aims to be your number one companion for mobile app development on iOS and Android. Therefore, we provide a bunch of useful tools including a log viewer, interactive layout inspector, and network inspector.
Extending Flipper
Flipper is built as a platform. In addition to using the tools already included, you can create your own plugins to visualize and debug data from your mobile apps. Flipper takes care of sending data back and forth, calling functions, and listening for events on the mobile app.
Contributing to Flipper
Both Flipper's desktop app and native mobile SDKs are open-source and MIT licensed. This enables you to see and understand how we are building plugins, and of course join the community and help improve Flipper. We are excited to see what you will build on this platform.
In this repo
This repository includes all parts of Flipper. This includes:
- Flipper's desktop app built using Electron (
/src) - native Flipper SDKs for iOS (
/iOS) - native Flipper SDKs for Android (
/android) - Plugins:
- Logs (
/src/device-plugins/logs) - Layout inspector (
/src/plugins/layout) - Network inspector (
/src/plugins/network)
- Logs (
- website and documentation (
/website//docs)
Getting started
Please refer to our Getting Started guide to set up Flipper.
Requirements
- macOS (while Flipper is buildable using other systems as well, only macOS is officially supported)
- node >= 8
- yarn >= 1.5
- iOS developer tools (for developing iOS plugins)
- Android SDK and adb
Building from Source
Desktop
Running from source
git clone https://github.com/facebook/flipper.git
cd flipper
yarn
yarn start
NOTE: If you're on Windows, you need to use Yarn 1.5.1 until this issue is resolved.
Building standalone application
yarn build --mac --version $buildNumber
iOS SDK + Sample App
cd iOS/Sample
pod install
open Sample.xcworkspace
<Run app from xcode>
Android SDK + Sample app
Start up an android emulator and run the following in the project root:
./gradlew :sample:installDebug
Documentation
Find the full documentation for this project at fbflipper.com.
Contributing and license
See the CONTRIBUTING file for how to help out. Flipper is MIT licensed, as found in the LICENSE file.
