Merge pull request #5 from practio/fix-use-delay-opts-on-callback

Fix to respect delay option when using callback

.travis.yml

@@ -4,5 +4,7 @@ node_js:
   - 4.2
   - 6
   - 8
+  - 10
+  - 12
 sudo: false
 after_success: "npm run coveralls"

index.js

@@ -61,7 +61,10 @@ function verbFunc(verb) {
 					callback.apply(this, arguments);
 				} else {
 					attempts++;
-					return request(params, params.callback);
+					logFunction(err || 'request-retry-stream is retrying to perform request');
+					return setTimeout(() => {
+						request(params, params.callback);
+					}, attempts * delay);
 				}
 			};
 			attempts++;