fhttp/rule/header.go
func (h *headerRule) Valid(reqCtx *fasthttp.RequestCtx) bool {
	j := func(reqCtx *fasthttp.RequestCtx) bool {
		get := func(key string) string {
			return string(reqCtx.Response.Header.Peek(key))
		}

		return h.valid(get)
	}
	return j(reqCtx)
}
func (h *headerRule) Valid(reqCtx *fasthttp.RequestCtx) bool {
	j := func(reqCtx *fasthttp.RequestCtx) bool {
		get := func(key string) string {
			return string(reqCtx.Response.Header.Peek(key))
		}

		return h.valid(get)
	}
	return j(reqCtx)
}
// Valid validator