Merge pull request android-async-http#385 from orientalsensation/configureRetryHandler

Let the user add further exception classes to RetryHandler's whitelist/blacklist.

Author: smarek

library/src/main/java/com/loopj/android/http/AsyncHttpClient.java

@@ -250,6 +250,18 @@ public void process(HttpResponse response, HttpContext context) {
         httpClient.setHttpRequestRetryHandler(new RetryHandler(DEFAULT_MAX_RETRIES, DEFAULT_RETRY_SLEEP_TIME_MILLIS));
     }
 
+    public static void allowRetryExceptionClass(Class<?> cls) {
+        if (cls != null) {
+            RetryHandler.addClassToWhitelist(cls);
+        }
+    }
+
+    public static void blockRetryExceptionClass(Class<?> cls) {
+        if (cls != null) {
+            RetryHandler.addClassToBlacklist(cls);
+        }
+    }
+
     /**
      * Get the underlying HttpClient instance. This is useful for setting additional fine-grained
      * settings for requests by accessing the client's ConnectionManager, HttpParams and

library/src/main/java/com/loopj/android/http/RetryHandler.java

@@ -105,6 +105,14 @@ public boolean retryRequest(IOException exception, int executionCount, HttpConte
         return retry;
     }
 
+    static void addClassToWhitelist(Class<?> cls) {
+        exceptionWhitelist.add(cls);
+    }
+
+    static void addClassToBlacklist(Class<?> cls) {
+        exceptionBlacklist.add(cls);
+    }
+
     protected boolean isInList(HashSet<Class<?>> list, Throwable error) {
         for (Class<?> aList : list) {
             if (aList.isInstance(error)) {