added IdleTimeoutHandler

jetty-server/src/main/java/org/eclipse/jetty/server/handler/IdleTimeoutHandler.java

@@ -0,0 +1,134 @@
+//
+//  ========================================================================
+//  Copyright (c) 1995-2013 Mort Bay Consulting Pty. Ltd.
+//  ------------------------------------------------------------------------
+//  All rights reserved. This program and the accompanying materials
+//  are made available under the terms of the Eclipse Public License v1.0
+//  and Apache License v2.0 which accompanies this distribution.
+//
+//      The Eclipse Public License is available at
+//      http://www.eclipse.org/legal/epl-v10.html
+//
+//      The Apache License v2.0 is available at
+//      http://www.opensource.org/licenses/apache2.0.php
+//
+//  You may elect to redistribute this code under either of these licenses.
+//  ========================================================================
+//
+
+package org.eclipse.jetty.server.handler;
+
+import java.io.IOException;
+
+import javax.servlet.AsyncEvent;
+import javax.servlet.AsyncListener;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+import org.eclipse.jetty.io.EndPoint;
+import org.eclipse.jetty.server.HttpConnection;
+import org.eclipse.jetty.server.Request;
+
+/**
+ * Handler to adjust the idle timeout of requests while dispatched.
+ * Can be applied in jetty.xml with
+ * <pre>
+ *   &lt;Get id='handler' name='Handler'/>
+ *   &lt;Set name='Handler>
+ *     &lt;New id='idleTimeoutHandler' class='org.eclipse.jetty.server.handler.IdleTimeoutHandler'>
+ *       &lt;Set name='Handler'>&lt;Ref id='handler'/>&lt;/Set>
+ *       &lt;Set name='IdleTimeoutMs'>5000&lt;/Set>
+ *     &lt;/New>
+ *   &lt;/Set>
+ * </pre>
+ */
+public class IdleTimeoutHandler extends HandlerWrapper
+{
+    private long _idleTimeoutMs = 1000;
+    private boolean _applyToAsync = false;
+    
+    public boolean isApplyToAsync()
+    {
+        return _applyToAsync;
+    }
+
+    /**
+     * Should the adjusted idle time be maintained for asynchronous requests
+     * @param applyToAsync true if alternate idle timeout is applied to asynchronous requests
+     */
+    public void setApplyToAsync(boolean applyToAsync)
+    {
+        _applyToAsync = applyToAsync;
+    }
+
+    public long getIdleTimeoutMs()
+    {
+        return _idleTimeoutMs;
+    }
+
+    /**
+     * @param idleTimeoutMs The idle timeout in MS to apply while dispatched or async
+     */
+    public void setIdleTimeoutMs(long idleTimeoutMs)
+    {
+        this._idleTimeoutMs = idleTimeoutMs;
+    }
+    
+   
+    @Override
+    public void handle(String target, Request baseRequest, HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException
+    {
+        HttpConnection connection = HttpConnection.getCurrentConnection();
+        final EndPoint endp = connection==null?null:connection.getEndPoint();
+        
+        final long idle_timeout;
+        if (endp==null)
+            idle_timeout=-1;
+        else
+        {
+            idle_timeout=endp.getIdleTimeout();
+            endp.setIdleTimeout(_idleTimeoutMs);
+        }
+        
+        try
+        {
+            super.handle(target,baseRequest,request,response);
+        }
+        finally
+        {
+            if (endp!=null)
+            {
+                if (_applyToAsync && request.isAsyncStarted())
+                {
+                    request.getAsyncContext().addListener(new AsyncListener()
+                    {
+                        @Override
+                        public void onTimeout(AsyncEvent event) throws IOException
+                        {                            
+                        }
+                        
+                        @Override
+                        public void onStartAsync(AsyncEvent event) throws IOException
+                        {
+                        }
+                        
+                        @Override
+                        public void onError(AsyncEvent event) throws IOException
+                        {
+                            endp.setIdleTimeout(idle_timeout);
+                        }
+                        
+                        @Override
+                        public void onComplete(AsyncEvent event) throws IOException
+                        {
+                            endp.setIdleTimeout(idle_timeout);
+                        }
+                    });
+                }
+                else 
+                    endp.setIdleTimeout(idle_timeout);
+            }
+        }
+    }
+}