1322122 - Add-ons that register a handler for a URI scheme do not work since FF50 (e10s on)

Status: RESOLVED INCOMPLETE

(Firefox :: Extension Compatibility, defect)

Description

[Matthias Kovatsch]

User Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:45.0) Gecko/20100101 Firefox/45.0
Build ID: 20160725105554

Steps to reproduce:

The FF add-on Copper uses contract @mozilla.org/network/protocol;1?name=coap in chrome.manifest to declare a protocol handler component (similar to other protocol handler add-ons such as FireFTP, which are also broken now). This worked until FF 50.




Actual results:

Since version 50, Firefox redirects the registered scheme "coap" to the search (Google by default). No error messages are displayed.


Expected results:

The defined add-on XUL page should have been loaded.

Comment 1

[Matthias Kovatsch]

Steps to reproduce: (Would be good if the report form would say the same)

1) Install https://addons.mozilla.org/de/firefox/addon/copper-270430/ or https://addons.mozilla.org/de/firefox/addon/fireftp/
2) Enter coap://californium.eclipse.org/ or ftp://ftp.gnu.org/
3) Add-ons are not loaded
4) Try with FF < 50 and see add-ons loaded

Comment 2

[YF (Yang)]

Due to e10s turn on. See also bug 1320470.

Comment 3

[Matthias Kovatsch]

Thanks a lot, helps for now!
Will there be any documentation how to register protocol handlers with e10s? (add-on handler, not the Web-based kind)

Comment 4

[Firefox Bug Husbandry Bot]

With Firefox 57 only WebExtensions are permitted and are, by default, e10s compatible.