vcl_error and first_byte_timeout?

[Jeff Potter]

Hi List,

Is there a way to figure out from inside vcl_error if the error was raised because of a backend timeout?

I’m trying to return a synthetically generated doc to clients that lets us see that the error was due to a backend taking too long to reply, so that the client can react different in this case (as opposed to other errors).

Thanks!

-Jeff