throw exception improved

if responseCode and responseMessage ara available always throws an InvalidResponseCodeException instead of HttpDataSourceException, so in onPlayerError method the http status code and message can be used to decide what will be the next step.

extensions/okhttp/src/main/java/com/google/android/exoplayer2/ext/okhttp/OkHttpDataSource.java

@@ -304,14 +304,14 @@ public class OkHttpDataSource extends BaseDataSource implements HttpDataSource {
 
     // Check for a valid response code.
     if (!response.isSuccessful()) {
+      Map<String, List<String>> headers = response.headers().toMultimap();
       byte[] errorResponseBody;
       try {
         errorResponseBody = Util.toByteArray(Assertions.checkNotNull(responseByteStream));
       } catch (IOException e) {
-        throw new HttpDataSourceException(
-            "Error reading non-2xx response body", e, dataSpec, HttpDataSourceException.TYPE_OPEN);
+        throw new InvalidResponseCodeException(
+            responseCode, response.message(), headers, dataSpec, null);
       }
-      Map<String, List<String>> headers = response.headers().toMultimap();
       closeConnectionQuietly();
       InvalidResponseCodeException exception =
           new InvalidResponseCodeException(