From b0e6091cadeaf29a95ab7d85eebd3c46671b6ac6 Mon Sep 17 00:00:00 2001
From: Rossen Stoyanchev <rstoyanchev@pivotal.io>
Date: Wed, 24 Sep 2014 15:04:57 -0400
Subject: [PATCH] Lower "no session" message log level in SubProtocolWSH

Issue: SPR-12247
---
 .../web/socket/messaging/SubProtocolWebSocketHandler.java    | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/spring-websocket/src/main/java/org/springframework/web/socket/messaging/SubProtocolWebSocketHandler.java b/spring-websocket/src/main/java/org/springframework/web/socket/messaging/SubProtocolWebSocketHandler.java
index 042909abeb3..fe934dc2482 100644
--- a/spring-websocket/src/main/java/org/springframework/web/socket/messaging/SubProtocolWebSocketHandler.java
+++ b/spring-websocket/src/main/java/org/springframework/web/socket/messaging/SubProtocolWebSocketHandler.java
@@ -324,7 +324,10 @@ public class SubProtocolWebSocketHandler implements WebSocketHandler,
 		}
 		WebSocketSessionHolder holder = this.sessions.get(sessionId);
 		if (holder == null) {
-			logger.error("No session for " + message);
+			if (logger.isDebugEnabled()) {
+				// The broker may not have removed the session yet
+				logger.debug("No session for " + message);
+			}
 			return;
 		}
 		WebSocketSession session = holder.getSession();