Health check -- just connect, or full response?

[John Norman]

Folks,

For the health check (or, ahem, "backend probe," as the docs has it --
ouch!), does "health" constitute ability to connect?

Or does it check for a 200?

Or get an entire page and verify that it's the right number of bytes . . . ?

Or . . . ?

In short, what constitutes a successful probe?

I'm using .url not .request

John