Retry on HTTP 429

Author: uerceg

Adjust/adjust/src/main/java/com/adjust/sdk/RequestHandler.java

@@ -99,10 +99,12 @@ private void sendI(ActivityPackage activityPackage, int queueSize) {
 
             if (responseData.jsonResponse == null) {
                 packageHandler.closeFirstPackage(responseData, activityPackage);
+                return;
             }
 
             if (responseData.trackingState == TrackingState.OPTED_OUT) {
                 activityHandler.gotOptOutResponse();
+                return;
             }
 
             packageHandler.sendNextPackage(responseData);

Adjust/adjust/src/main/java/com/adjust/sdk/UtilNetworking.java

@@ -117,6 +117,10 @@ private static ResponseData readHttpResponse(HttpsURLConnection connection, Acti
             responseCode = connection.getResponseCode();
             InputStream inputStream;
 
+            if (responseCode == 429) {
+                return responseData;
+            }
+
             if (responseCode >= 400) {
                 inputStream = connection.getErrorStream();
             } else {