POST request from addon page to server is empty

Add-ons Development
#1

Hello! We have developed an add-on, with it’s own page, where there is an html form with “action”=“address of our site” and “method”=“post”. In the latest versions of the firefox, it stops to work. The form submits an empty request. What can be done to improve the situation? Thank you.

#2

That is hardly enough information to give you an answer.

#3

Hi! There is an example. To show the problem we take an example https://github.com/mdn/webextensions-examples/tree/master/open-my-page-button and place the html form on it page. Here is zip with example https://yadi.sk/d/YEbnHvhp3VCzdF .
Just use your own action address for test.

#4

The first thing I would try is to add a host permission for the target, otherwise your empty request might just be the preflight request.

#5

Hello! To add a host permission is not helping. And there is one more detail. Html form with method=“post” sending as empty GET request.
$_SERVER[‘REQUEST_METHOD’]==‘GET’

#6

I think this may be related to this discussion I just remembered:


The conclusion there was that it is a bug, which still hasn’t been fixed.

Here are some different approaches that might work:

  • don’t just have a form POSTing to the target host, embed an iframe with that form from that host instead (assuming you control that server)
  • use GET (just keep some security aspects in mind)
  • use XHR or fetch to POST (in a submit handler, grab the formdata and programmatically post it, then handle the response)