Feature #4000 URI Resolver - must support HEAD request

https://support.d4science.org/4000

Added doHead handler



git-svn-id: http://svn.research-infrastructures.eu/public/d4science/gcube/trunk/data-transfer/uri-resolver@128626 82a268e6-3cf1-43bd-a215-b396298e98cf

src/main/java/org/gcube/datatransfer/resolver/http/StorageIDResolver.java

@@ -198,6 +198,17 @@ public class StorageIDResolver extends HttpServlet {
 
 	}
 
+	/* (non-Javadoc)
+	 * @see javax.servlet.http.HttpServlet#doHead(javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
+	 */
+	@Override
+	protected void doHead(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+		logger.info("doHead working..");
+
+		req.setAttribute(VALIDATION, "true");
+        doGet(req, resp);
+	}
+
 	/**
 	 * Send error quietly.
 	 *