For the installation : Put the folder «http2https» with the two files «init.php» and «https.php» into plugins/ of ttrss. Go to Configuration, then Plugins and activate http2https. That’s all !
The problem wasn’t my webserver : everything works with https.
The problem is that ttrss uses images from other webserver wich doesn’t have https (the links of the images are in the RSS) and I want these images without mixed content.
Thanks for the propostion.
I don’t know this plugin exists… but I think it was what I needed.
I tried to use it but my version of ttrss is maybe to old : it doesn’t work… I’ll try it later.
I don’t have this folder, but you’re right, it’s the best location.