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Juggler (Deprecated)

Juggler - Experimental Firefox Automation Protocol for implementing the Puppeteer API.

This repository is a fork of the Firefox browser with additional support for the "Juggler" remote debugging protocol. Juggler can be found in //testing/juggler/.

⚠️ The puppeteer-firefox package has been deprecated: As of puppeteer v2.1.0 you can interact with official Firefox Nightly binaries, which do not use Juggler. The puppeteer-firefox npm package, which depends on Juggler, will remain available until the transition is complete, but it is no longer actively maintained and neither is Juggler. For more information visit https://wiki.mozilla.org/Remote and see also puppeteer/puppeteer#5397

Protocol

See //testing/juggler/Protocol.js.

Building FF with Juggler

  1. Clone the Juggler repository (without history to make things faster)
git clone --depth 1 https://github.com/Puppeteer/juggler
cd juggler
  1. Bootstrap a host environment for the Firefox build and compile Firefox locally
# OPTIONAL - bootstrap host environment.
./mach bootstrap --application-choice=browser --no-interactive
# Compile browser
./mach build

Troubleshooting when building FF on Mac

Black screen after FF Build

As of Jan. 2019 there is a known bug that will cause an entirely black screen when running the nightly build of firefox built with the MacOSX SDK version 10.14.

The easiest fix right now is downgrading your MacOSX SDK.

To do so:

  1. Go to this repo and install any SDK version < 10.14 (e.g. 10.13 works fine)

  2. In the juggler/firefox folder:

echo "ac_add_options --with-macos-sdk=path/to/sdk" >> .mozconfig
# your SDK might be located at
# /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/
  1. run ./mach build again

Missing headers in /usr/include

On MacOS 10.14 (Mojave) you might run into issues when building FF.

The error is related to a change in the xcode-select installation

To workaround this issue you can simply run:

# Write missing headers to /usr/include
sudo installer -pkg /Library/Developer/CommandLineTools/Packages/macOS_SDK_headers_for_macOS_10.14.pkg -target /

Running Firefox with Juggler

Juggle adds a -juggler CLI flag that accepts a port to expose a remote protocol on. Pass 0 to pick a random port - Juggler will print its port to STDOUT.

./mach run -- -juggler 0

Uploading builds to Google Storage

QUICK: on Linux and OSX, just use //.ci/scripts/build_and_upload.sh

Firefox builds with Juggler support are uploaded to the gs://juggler-builds/ bucket.

Project maintainers can upload builds. To upload a build, do the following:

  1. Install gcloud if you haven't yet.
  2. Authenticate in the cloud and select the project
gcloud auth login
gcloud config set project juggler-builds
  1. Make sure firefox is compiled. After that, package a build for redistribution:
./mach package
  1. Archive the build and copy it to the gbucket

We want to ship *.zip archives so that it will be easy to decompress them on the node-side.

  • Linux: .ci/scripts/upload_linux.sh
  • Mac: .ci/scripts/upload_mac.sh