420033 AsyncContext.onTimeout exceptions passed to onError

Conflicts:
	jetty-server/src/main/java/org/eclipse/jetty/server/AbstractHttpConnection.java
	jetty-server/src/main/java/org/eclipse/jetty/server/AsyncContinuation.java
	jetty-servlet/src/test/java/org/eclipse/jetty/servlet/AsyncContextTest.java

jetty-server/src/main/java/org/eclipse/jetty/server/HttpChannel.java

@@ -274,10 +274,19 @@ public class HttpChannel<T> implements HttpParser.RequestHandler<T>, Runnable
                     if (_request.getHttpChannelState().isExpired())
                     {
                         _request.setDispatcherType(DispatcherType.ERROR);
+                        
+                        Throwable ex=_state.getAsyncContextEvent().getThrowable();
+                        String reason="Async Timeout";
+                        if (ex!=null)
+                        {
+                            reason="Async Exception";
+                            _request.setAttribute(RequestDispatcher.ERROR_EXCEPTION,ex);
+                        }
                         _request.setAttribute(RequestDispatcher.ERROR_STATUS_CODE,new Integer(500));
-                        _request.setAttribute(RequestDispatcher.ERROR_MESSAGE,"Async Timeout");
+                        _request.setAttribute(RequestDispatcher.ERROR_MESSAGE,reason);
                         _request.setAttribute(RequestDispatcher.ERROR_REQUEST_URI,_request.getRequestURI());
-                        _response.setStatusWithReason(500,"Async Timeout");
+        
+                        _response.setStatusWithReason(500,reason);
                         
                         ErrorHandler eh = _state.getContextHandler().getErrorHandler();
                         if (eh instanceof ErrorHandler.ErrorPageMapper)

jetty-server/src/main/java/org/eclipse/jetty/server/HttpChannelState.java

@@ -348,7 +348,7 @@ public class HttpChannelState
     protected void expired()
     {
         final List<AsyncListener> aListeners;
-        AsyncEvent event;
+        AsyncContextEvent event;
         synchronized (this)
         {
             switch(_state)
@@ -374,7 +374,10 @@ public class HttpChannelState
                 }
                 catch(Exception e)
                 {
-                    LOG.warn(e);
+                    LOG.debug(e);
+                    event.setThrowable(e);
+                    _channel.getRequest().setAttribute(RequestDispatcher.ERROR_EXCEPTION,e);
+                    break;
                 }
             }
         }

jetty-servlet/src/test/java/org/eclipse/jetty/servlet/AsyncContextTest.java

@@ -28,7 +28,10 @@ import java.io.IOException;
 import java.io.StringReader;
 
 import javax.servlet.AsyncContext;
+import javax.servlet.AsyncEvent;
+import javax.servlet.AsyncListener;
 import javax.servlet.DispatcherType;
+import javax.servlet.RequestDispatcher;
 import javax.servlet.ServletException;
 import javax.servlet.http.HttpServlet;
 import javax.servlet.http.HttpServletRequest;
@@ -76,6 +79,7 @@ public class AsyncContextTest
         _contextHandler.addServlet(new ServletHolder(new ForwardingServlet()),"/forward");
         _contextHandler.addServlet(new ServletHolder(new AsyncDispatchingServlet()),"/dispatchingServlet");
         _contextHandler.addServlet(new ServletHolder(new ExpireServlet()),"/expire/*");
+        _contextHandler.addServlet(new ServletHolder(new BadExpireServlet()),"/badexpire/*");
         _contextHandler.addServlet(new ServletHolder(new ErrorServlet()),"/error/*");
         
         ErrorPageErrorHandler error_handler = new ErrorPageErrorHandler();
@@ -287,8 +291,11 @@ public class AsyncContextTest
     @Test
     public void testExpire() throws Exception
     {
-        String request = "GET /ctx/expire HTTP/1.1\r\n" + "Host: localhost\r\n" + "Content-Type: application/x-www-form-urlencoded\r\n"
+        String request = "GET /ctx/expire HTTP/1.1\r\n" + 
-                + "Connection: close\r\n" + "\r\n";
+                "Host: localhost\r\n" + 
+                "Content-Type: application/x-www-form-urlencoded\r\n" +
+                "Connection: close\r\n" + 
+                "\r\n";
         String responseString = _connector.getResponses(request);
                
         BufferedReader br = new BufferedReader(new StringReader(responseString));
@@ -299,7 +306,28 @@ public class AsyncContextTest
         br.readLine();// server
         br.readLine();// empty
 
-        Assert.assertEquals("error servlet","ERROR:/error",br.readLine());
+        Assert.assertEquals("error servlet","ERROR: /error",br.readLine());
+    }
+
+    @Test
+    public void testBadExpire() throws Exception
+    {
+        String request = "GET /ctx/badexpire HTTP/1.1\r\n" + 
+          "Host: localhost\r\n" + 
+          "Content-Type: application/x-www-form-urlencoded\r\n" +
+          "Connection: close\r\n" + 
+          "\r\n";
+        String responseString = _connector.getResponses(request);
+        
+        BufferedReader br = new BufferedReader(new StringReader(responseString));
+
+        assertEquals("HTTP/1.1 500 Async Exception",br.readLine());
+        br.readLine();// connection close
+        br.readLine();// server
+        br.readLine();// empty
+
+        Assert.assertEquals("error servlet","ERROR: /error",br.readLine());
+        Assert.assertEquals("error servlet","EXCEPTION: java.io.IOException: TEST",br.readLine());
     }
 
     private class DispatchingRunnable implements Runnable
@@ -336,7 +364,9 @@ public class AsyncContextTest
         @Override
         protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
         {
-            response.getOutputStream().print("ERROR:" + request.getServletPath() + "\n");
+            response.getOutputStream().print("ERROR: " + request.getServletPath() + "\n");
+            if (request.getAttribute(RequestDispatcher.ERROR_EXCEPTION)!=null)
+                response.getOutputStream().print("EXCEPTION: " + request.getAttribute(RequestDispatcher.ERROR_EXCEPTION) + "\n");
         }
     }
     
@@ -355,6 +385,44 @@ public class AsyncContextTest
         }
     }
     
+    private class BadExpireServlet extends HttpServlet
+    {
+        private static final long serialVersionUID = 1L;
+
+        @Override
+        protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException
+        {
+            if (request.getDispatcherType()==DispatcherType.REQUEST)
+            {
+                AsyncContext asyncContext = request.startAsync();
+                asyncContext.addListener(new AsyncListener()
+                {
+                    @Override
+                    public void onTimeout(AsyncEvent event) throws IOException
+                    {
+                        throw new IOException("TEST");
+                    }
+                    
+                    @Override
+                    public void onStartAsync(AsyncEvent event) throws IOException
+                    {                      
+                    }
+                    
+                    @Override
+                    public void onError(AsyncEvent event) throws IOException
+                    {                        
+                    }
+                    
+                    @Override
+                    public void onComplete(AsyncEvent event) throws IOException
+                    {                        
+                    }
+                });
+                asyncContext.setTimeout(100);
+            }
+        }
+    }
+    
     private class TestServlet extends HttpServlet
     {
         private static final long serialVersionUID = 1L;