From b1a019bfe6c43a9adce3b7191c8c44a05e32acd4 Mon Sep 17 00:00:00 2001
From: antonyscerri <a.scerri@elsevier.com>
Date: Sat, 24 Nov 2018 08:41:35 +0000
Subject: [PATCH] Websocket error handler (#54)

* Fix to handle no data in websocket response and call callback or default handler

* Added handling of non 2XX websocket response codes as errors
---
 scripts/graphioGremlin.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/scripts/graphioGremlin.js b/scripts/graphioGremlin.js
index acb7a02..401044e 100644
--- a/scripts/graphioGremlin.js
+++ b/scripts/graphioGremlin.js
@@ -306,6 +306,12 @@ var graphioGremlin = (function(){
 		};
 		ws.onmessage = function (event){
 			var response = JSON.parse(event.data);
+			var code=Number(response.status.code)
+			if(!isInt(code) || code<200 || code>299) {
+				$('#outputArea').html(response.status.message);
+				$('#messageArea').html("Error retrieving data");
+				return 1;
+			}
 			var data = response.result.data;
 			if (data == null){
 				if (query_type == 'editGraph'){