+// This will look in the Retry-After header, RFC 7231, for how long
+// it will wait before attempting another request
+func getRetryDelay(r *request.Request) (time.Duration, bool) {
+ if !canUseRetryAfterHeader(r) {
+ return 0, false
+ }
+
+ delayStr := r.HTTPResponse.Header.Get("Retry-After")
+ if len(delayStr) == 0 {
+ return 0, false
+ }
+
+ delay, err := strconv.Atoi(delayStr)
+ if err != nil {
+ return 0, false
+ }
+
+ return time.Duration(delay) * time.Second, true