@robb I don't suppose you came across the error "found an invalid character in header name"?
I'm trying to send an "accept" to a follow request using your code - but something isn't happy.

@Edent I don’t recall that error, no sorry. This part is a such a pain. If you have your code up somewhere I’d be happy to take a look just as a second pair of eyes.

@robb ah, I stuffed up the headers. Got them working now.

New error is "Verification failed for ..." Which at least is progress!

@Edent Excellent! (Was putting the kid to bed and only just started looking, glad you got it sorted)