From 88d5fe56617db18f1682f671497a86774740201d Mon Sep 17 00:00:00 2001
From: "koo.taejin" <koo.taejin@navercorp.com>
Date: Tue, 18 Oct 2016 17:09:23 +0900
Subject: [PATCH] [PinpiontWeb] fix a ActiveThread concurrency problem #1482

If webSocketSession status is not opened, then do not binding to flush aggregator.
---
 .../pinpoint/web/websocket/ActiveThreadCountHandler.java    | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/web/src/main/java/com/navercorp/pinpoint/web/websocket/ActiveThreadCountHandler.java b/web/src/main/java/com/navercorp/pinpoint/web/websocket/ActiveThreadCountHandler.java
index 2b865789c33f..8da38eea614e 100644
--- a/web/src/main/java/com/navercorp/pinpoint/web/websocket/ActiveThreadCountHandler.java
+++ b/web/src/main/java/com/navercorp/pinpoint/web/websocket/ActiveThreadCountHandler.java
@@ -214,7 +214,11 @@ private void handleRequestMessage0(WebSocketSession webSocketSession, RequestMes
                     }
 
                     unbindingResponseAggregator(webSocketSession);
-                    bindingResponseAggregator(webSocketSession, applicationName);
+                    if (webSocketSession.isOpen()) {
+                        bindingResponseAggregator(webSocketSession, applicationName);
+                    } else {
+                        logger.warn("WebSocketSession is not opened. skip binding.");
+                    }
                 }
             }
         }