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Posted to dev@tomcat.apache.org by ma...@apache.org on 2013/10/02 11:03:49 UTC

svn commit: r1528384 - in /tomcat/tc7.0.x/trunk: ./ webapps/examples/WEB-INF/classes/websocket/snake/SnakeTimer.java

Author: markt
Date: Wed Oct  2 09:03:49 2013
New Revision: 1528384

URL: http://svn.apache.org/r1528384
Log:
Swallow exception when writing to a closed client

Modified:
    tomcat/tc7.0.x/trunk/   (props changed)
    tomcat/tc7.0.x/trunk/webapps/examples/WEB-INF/classes/websocket/snake/SnakeTimer.java

Propchange: tomcat/tc7.0.x/trunk/
------------------------------------------------------------------------------
  Merged /tomcat/trunk:r1528383

Modified: tomcat/tc7.0.x/trunk/webapps/examples/WEB-INF/classes/websocket/snake/SnakeTimer.java
URL: http://svn.apache.org/viewvc/tomcat/tc7.0.x/trunk/webapps/examples/WEB-INF/classes/websocket/snake/SnakeTimer.java?rev=1528384&r1=1528383&r2=1528384&view=diff
==============================================================================
--- tomcat/tc7.0.x/trunk/webapps/examples/WEB-INF/classes/websocket/snake/SnakeTimer.java (original)
+++ tomcat/tc7.0.x/trunk/webapps/examples/WEB-INF/classes/websocket/snake/SnakeTimer.java Wed Oct  2 09:03:49 2013
@@ -79,7 +79,15 @@ public class SnakeTimer {
 
     protected static void broadcast(String message) {
         for (Snake snake : SnakeTimer.getSnakes()) {
-            snake.sendMessage(message);
+            try {
+                snake.sendMessage(message);
+            } catch (IllegalStateException ise) {
+                // An ISE can occur if an attempt is made to write to a
+                // WebSocket connection after it has been closed. The
+                // alternative to catching this exception is to synchronise
+                // the writes to the clients along with the addSnake() and
+                // removeSnake() methods that are already synchronised.
+            }
         }
     }
 



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