Issue #300 - ensure Sessions are stopped before CompressionPools

Signed-off-by: Lachlan Roberts <lachlan@webtide.com>

jetty-util/src/main/java/org/eclipse/jetty/util/compression/CompressionPool.java

@@ -88,7 +88,7 @@ public abstract class CompressionPool<T> extends AbstractLifeCycle
         if (object == null)
             return;
 
-        if (_capacity == 0)
+        if (_capacity == 0 || isStopped())
         {
             end(object);
             return;

jetty-websocket/websocket-client/src/main/java/org/eclipse/jetty/websocket/client/WebSocketClient.java

@@ -400,6 +400,8 @@ public class WebSocketClient extends ContainerLifeCycle implements WebSocketCont
 
         ShutdownThread.deregister(this);
 
+        sessionTracker.stop();
+        extensionRegistry.stop();
         super.doStop();
 
         if (LOG.isDebugEnabled())

jetty-websocket/websocket-server/src/main/java/org/eclipse/jetty/websocket/server/WebSocketServerFactory.java

@@ -338,6 +338,14 @@ public class WebSocketServerFactory extends ContainerLifeCycle implements WebSoc
         super.doStart();
     }
 
+    @Override
+    protected void doStop() throws Exception
+    {
+        sessionTracker.stop();
+        extensionFactory.stop();
+        super.doStop();
+    }
+
     /**
      * Attempt to find the DecoratedObjectFactory that should be used.
      * @return the DecoratedObjectFactory that should be used. (never null)