Compatibility/Telemetry: Difference between revisions

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(→‎Measuring web compatibility: adding a couple of items, categories.)
(→‎Possible telemetry probes: adding a couple of telemetry probes)
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=== Possible telemetry probes ===
=== Possible telemetry probes ===


==== CSS ====
==== CSS ====
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* Wrong mimetypes for images
* Wrong mimetypes for images
* Wrong mimetypes for JSON
* Wrong mimetypes for JSON
==== JS ====
* (When Possible) identify the js lib used against a DB of the latest versions of JS libs. (to understand the use of legacy code)
* Identify, count how many times `navigator.userAgent` is used on the Web and a couple of other related thing.





Revision as of 20:27, 18 December 2014

Measuring web compatibility

This page tracks the telemetry measurements that the Web Compat team is tracking. See Telemetry for more information.

Bug 1109958 will serve as the meta tracking bug for all telemetry probes.

Possible telemetry probes

CSS

HTTP

  • WAP (WML or XHTMLMP) content sent to Fennec users
  • `Server:` name
  • Redirection sequences
  • Wrong mimetypes for images
  • Wrong mimetypes for JSON

JS

  • (When Possible) identify the js lib used against a DB of the latest versions of JS libs. (to understand the use of legacy code)
  • Identify, count how many times `navigator.userAgent` is used on the Web and a couple of other related thing.


Video

  • M3U8 src for <video>
  • requestFullScreen vs requestFullscreen. See https://bugzilla.mozilla.org/show_bug.cgi?id=743198#c5
  • format (ogg, mp4, h264, etc.)
  • Ads before video and transition to video
  • EME required
  • geofencing for IP rights
  • List of video providers (stats for understanding if we need to focus our contacts actions toward some specific people)
  • List of JS libraries used for video players
  • H.264 AVC profile info
  • Flash-only video