[Mozilla Enterprise] Message CORS request failed on Firefox 68 ESR

[Mike Kaply]

It's possible this is something that regressed and was fixed. If we knew,
we could back port to 68.

Could you try using mozregression to see when it started failing?

https://mozilla.github.io/mozregression/

Thanks

Mike Kaply

On Wed, May 6, 2020 at 3:17 AM Michel BOISIS <mboisis at afi-sa.fr> wrote:

> Hello,
>
> our company is developing full web software for municipal libraries.
>
> Our application works in HTTPS but must access an RFID plate via a web
> service which works in HTTP only.
>
> With Firefox 45 ESR, it worked fine.
>
> With Firefox 68 ESR we get the following message when connecting from our
> application to the web service of the deck in HTTP:
>
> Platinum config init: RfidNedap: Rfid Config => proxyService: urlService:
> http: //localhost/nedaprfidwebservice.asmx cnx chain: 192.168.4.71
> formatTag: 513 rfid-4.1.26.js: 23: 11
> Blocking of a multi-origin request (Cross-Origin Request): the "Same
> Origin" policy does not allow consulting the remote resource located on
> http: //localhost/nedaprfidwebservice.asmx. Reason: CORS request failed.
>
> Is there a way in Firefox ESR 68 to allow this connection over HTTP?
>
> For information, the request does not also work on Firefox 68.0 but works
> correctly on Firefox 72.0.
>
> Why doesn't it work in Firefox 68?
>
> Have a good day
>
> Michel Boisis
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