Resetting image host urls to http from https

[savvasdalkitsis]

Describe the bug/problem

I am running my calibre-web instance behind a reverse proxy with https.

Given a configuration like this:

api_endpoint=https://DOMAIN/kobo/TOKEN
image_host=https://DOMAIN
image_url_quality_template=https://DOMAIN/kobo/TOKEN/{ImageId}/{width}/{height}/{Quality}/isGreyscale/image.jpg
image_url_template=https://DOMAIN/kobo/TOKEN/{ImageId}/{width}/{height}/false/image.jpg

After I disconnect my device, either immediately or after a little while, the images of the kobo store and others are failing to load.

Checking the config file again shows that calibre-web has automatically re-written the following urls (api_endpoint, image_host, image_url_quality_template and image_url_template) to use simple http instead of https which i believe is the reason for the images failing to load

image_host=http://DOMAIN
image_url_quality_template=http://DOMAIN/kobo/TOKEN/{ImageId}/{width}/{height}/{Quality}/isGreyscale/image.jpg
image_url_template=http://DOMAIN/kobo/TOKEN/{ImageId}/{width}/{height}/false/image.jpg

Note that the api_endpoint url remains unmodified to https

• OS: Linux 5.15.0-112-generic 122-Ubuntu SMP Thu May 23 07:48:21 UTC 2024 x86_64 x86_64
• Python version: 3.10.12 (main, Nov 20 2023, 15:14:05) [GCC 11.4.0]
• Calibre-Web version: 0.6.21 - c45188b - 2023-10-21T12:40:32+02:00
• Docker container: LinuxServer (latest)

[OzzieIsaacs]

Something with your proxy config is wrong, so calibre-web gets accessed via http instead of https.