From af42377d0e83cf73d345ffc3c88032a6c3048cbc Mon Sep 17 00:00:00 2001
From: Claudio Atzori <claudio.atzori@isti.cnr.it>
Date: Mon, 28 Jun 2021 09:34:30 +0200
Subject: [PATCH] HttpClient used in metadata collection retries on 502, 503,
 504

---
 .../main/java/eu/dnetlib/dhp/collection/HttpConnector2.java    | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/collection/HttpConnector2.java b/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/collection/HttpConnector2.java
index 3782a19e4d..a84b269551 100644
--- a/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/collection/HttpConnector2.java
+++ b/dhp-workflows/dhp-aggregation/src/main/java/eu/dnetlib/dhp/collection/HttpConnector2.java
@@ -142,9 +142,10 @@ public class HttpConnector2 {
 				throw new CollectorException("4xx error: request will not be repeated. " + report);
 			}
 			if (is5xx(urlConn.getResponseCode())) {
-				// SERVER SIDE ERRORS RETRY ONLY on 503
 				switch (urlConn.getResponseCode()) {
+					case HttpURLConnection.HTTP_BAD_GATEWAY:
 					case HttpURLConnection.HTTP_UNAVAILABLE:
+					case HttpURLConnection.HTTP_GATEWAY_TIMEOUT:
 						if (retryAfter > 0) {
 							log
 								.warn(