Merge pull request #30 from XanSmarty/retry-sender-comment

Add comment about 429 retries

internal/sdk/retry_client.go

@@ -81,6 +81,7 @@ func (r *RetryClient) handleHttpStatusCode(response *http.Response, attempt *int
 	}
 	if response.StatusCode == http.StatusTooManyRequests {
 		r.sleeper(time.Second * time.Duration(r.random(backOffRateLimit)))
+		// Setting attempt to 1 will make 429s retry indefinitely; this is intended behavior.
 		*attempt = 1
 	}
 	return true