Blockwise progress

[krbvroc1]

go-coap/net/blockwise/blockwise.go

Lines 533 to 536 in ab9c038

	if err == nil {
	r.Remove(message.Block2)
	}
	next(w, r)

Is there any reason in the above code, the next() call cannot be called first? Since you remove the Block2 option prior to calling next(), it prevents the handler from using r.Options.GetUint32(message.Block2) in order to track the progress (such as compute percent complete or store progress)

Is there some other way to accomplish this that I have missed?