QA/WebRTC/OpenH264

OpenH264 Feature

How the feature is suppose to work:

Approximately 1min after starting Fx33 it downloads the OpenH264 plugin in the background from this URL https://aus4.mozilla.org/update/3/GMP/%VERSION%/%BUILD_ID%/%BUILD_TARGET%/%LOCALE%/%CHANNEL%/%OS_VERSION%/%DISTRIBUTION%/%DISTRIBUTION_VERSION%/update.xml
- Before the download the OpenH264 plugin appears in the plugin section of about:addons with a "soon to be installed" warning
After the successful download the following user prefs get set:
- media.gmp-manager.lastCheck, media.gmp-gmpopenh264.version, media.gmp-gmpopenh264.path, media.gmp-gmpopenh264.lastUpdate
The OpenH264 plugin appears as enabled in the plugin section of about:addons
The user can navigate to the plugins section on about:addons and manually set the plugin to disabled
The user can make WebRTC calls and Fx will offer H264 as secondary video codec after the default VP8
- You can verify this, by navigating to http://mozilla.github.io/webrtc-landing/pc_test.html, check the "Require H264" option and start a test call (which fails if the OpenH264 plugin is not installed or disabled)

These high level areas need to be tested:

Existing automated test cases:

test_peerConnection_basicH264Video.html uses the GMP fake plugin to make a call while using a codec from a GMP plugin

Assumption:

We assume that the H264 codec itself has been tested by Cisco, so that we don't have to test it in depth

Open questions/areas for testing/verification:

How to disable the download of the plugin and verify that setting works properly?
How to verify that not malicious code gets downloaded as the plugin?
How to verify the setting (?) which puts the plugin into disabled state after download?
How to verify that a broken XML on the download server is handled properly (needs definition of properly)?
How to verify that an outage of the download server is handled properly (needs definition of properly)?
How do we test and verify a new binary release of the plugin, before it gets release?
How to verify that the pre-compiled codec plugin binary works on all platforms?
How to verify that a disabled plugin results in no H264 offers in the SDP?
How to verify that disabling the plugin in the middle of a call is handled properly?
Do we need to verify cross-platform calling?
How do we test interoperability with mobile devices?
Is there a way to shorten the initial download delay of 60s to something less?
Can we do a manual installation from openh264.org instead?
Do we have any telemetry which tells us about the percent of failed installations in the field?
How do media.navigator.permission.disabled and media.getusermedia.screensharing.allowed_domains interact?

Make sure these are verified fixed and have tests.

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