Send a user-defined cookie when connecting to server, to use as a pre-shared key

[jschwalbe]

I expose my Home Assistant via cloudflared. If you don't know what that is, read about it and come back here. It's pretty sweet. Essentially you can open up a service and use cloudflare to limit access, without having to expose your home IP or open any ports. Great. It also makes the connection HTTPS (even if HA is only running as HTTP).

The firewall happens to be extremely useful and robust. For example, I can make it so exact that if the client trying to access my config doesn't have a very specific cooke set, then they will get a 403 error, as below:

The Request

I would like to see a setting within the Mobile App that allows the user to define a specific cookie that gets shared on each connection, exactly for this purpose. It would work like a pre-shared key, one extra step towards securing the server from outside access.

The setting would be:
Cookie name: ____randomkey12324381_____. Cookie data: _____supersecretpasssssssword131938123______
Simple as that. Anything that connects to the cloudflared instance pointing to my HA server that doesn't have this set, gets automatically denied.