hitting remote at each endpoint value change bogs page down

[meowsbits]

Describe the bug
It seems that the RPC fetch method(s) are called every time the value in the input field changes.

This gets really boggy for me.

Expected behavior
Set (finalize) the endpoint value when I hit Return, or when the inputted value becomes a valid URL.

Desktop (please complete the following information):

• OS: linux
• Browser firefox
• Version 96e603e

[meowsbits]

Just bumping. As the user types, we can expect that, for example, http://loca is not going to work because it isn't a valid FQDN. I would propose validating the endpoint before attempting to hit it, saving a lot of predictable failures (ie a failure with each letter typed, assuming the endpoint is currently tested on value change).