extract method

Author: sclassen

core/src/main/java/net/adoptopenjdk/icedteaweb/resources/downloader/BaseResourceDownloader.java

@@ -132,11 +132,7 @@ private CompletableFuture<Resource> downloadFrom(final URL url) {
     }
 
     private Resource tryDownloading(final URL downloadFrom) throws IOException {
-        try {
-            final int httpsRequestInterval = getTimeValue(ConfigurationConstants.KEY_HTTPCONNECTION_REQUEST_INTERVAL);
-            Thread.sleep(httpsRequestInterval);
-        } catch (InterruptedException ie) {
-        }
+        ensureRequestInterval();
         DownloadDetails downloadDetails = null;
         try (final CloseableConnection connection = getDownloadConnection(downloadFrom)) {
             downloadDetails = getDownloadDetails(connection);
@@ -163,6 +159,16 @@ private Resource tryDownloading(final URL downloadFrom) throws IOException {
         }
     }
 
+    private void ensureRequestInterval() {
+        final int httpsRequestInterval = getTimeValue(ConfigurationConstants.KEY_HTTPCONNECTION_REQUEST_INTERVAL);
+        if (httpsRequestInterval > 0) {
+            try {
+                Thread.sleep(httpsRequestInterval);
+            } catch (InterruptedException ignored) {
+            }
+        }
+    }
+
     private CloseableConnection getDownloadConnection(final URL location) throws IOException {
         final Map<String, String> requestProperties = new HashMap<>();
         requestProperties.put(ACCEPT_ENCODING_HEADER, PACK_200_OR_GZIP);