Tautulli
Tautulli URL not recognized as valid format
Describe the bug
I'm trying to register the app with my self-hosted instance of Tautulli.
The URL in question is https://plex_stats.kohming.net
Steps to Reproduce
- Generate a QR code through Tautulli using the "Register a New Device" option in the settings
- Verify the URL matches publicly accessible URL for Tautulli
- Click on Scan a QR code in the Tuatulli mobile app
- Click "Register Device"
- Notice the URL is not recognized as a valid format
Expected Behavior
Expect app to recognize the URL as valid
Tautulli Remote Version
v3.3.1(168)
Tautulli Version
v2.15.0
Mobile Device
Pixel Fold
Mobile OS
Android 18
Additional Context
No response
I did some testing with alternate URLs. The issue is the underscore in the subdomain. A domain without an underscore causes no issue.
Unfortunately underscores are not valid characters for domain names as per RFC 1035 section 2.3.1.
Specifically:
They must start with a letter, end with a letter or digit, and have as interior characters only letters, digits, and hyphen.
Alright so while this doesn't follow standards it is possible the validator I use can allow underscores. I will put this under investigation for now.
For me it does not accept hostname only on the URL, showing "Invalid URL format", like in https://hostname:port. The hostname in this case is just a name, no TLD. I can access the server through the browser just fine
The next update will include a change so that underscores do not fail the URL validation.