Function headerHas

header.go:52–55

has reports whether h has the provided key defined, even if it's set to 0-length slice.

(h http.Header, key string)

// has reports whether h has the provided key defined, even if it's
// set to 0-length slice.
func headerHas(h http.Header, key string) bool {
	_, ok := h[key]
	return ok
}

// sortedKeyValues returns h's keys sorted in the returned kvs
// slice. The headerSorter used to sort is also returned, for possible