Author: remm
Date: Mon Jan  6 23:40:32 2014
New Revision: 1556071

URL: http://svn.apache.org/r1556071
Log:
Avoid NPE if the write listener is called once immediately after being set, 
even if no data was written (= the app doesn't send any message during the init 
of the connection).
I don't think Tomcat does it yet (this doesn't need to be ported to Tomcat 7 
since it is not a Servlet 3.1 impl).

Modified:
    
tomcat/trunk/java/org/apache/tomcat/websocket/server/WsRemoteEndpointImplServer.java

Modified: 
tomcat/trunk/java/org/apache/tomcat/websocket/server/WsRemoteEndpointImplServer.java
URL: 
http://svn.apache.org/viewvc/tomcat/trunk/java/org/apache/tomcat/websocket/server/WsRemoteEndpointImplServer.java?rev=1556071&r1=1556070&r2=1556071&view=diff
==============================================================================
--- 
tomcat/trunk/java/org/apache/tomcat/websocket/server/WsRemoteEndpointImplServer.java
 (original)
+++ 
tomcat/trunk/java/org/apache/tomcat/websocket/server/WsRemoteEndpointImplServer.java
 Mon Jan  6 23:40:32 2014
@@ -83,6 +83,11 @@ public class WsRemoteEndpointImplServer 
 
 
     public void onWritePossible(boolean useDispatch) {
+        if (buffers == null) {
+            // Servlet 3.1 will call the write listener once even if nothing
+            // was written
+            return;
+        }
         boolean complete = true;
         try {
             // If this is false there will be a call back when it is true



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