Merge remote-tracking branch 'origin/jetty-8'

Conflicts:
	jetty-server/src/main/java/org/eclipse/jetty/server/Response.java
	jetty-server/src/test/java/org/eclipse/jetty/server/ResponseTest.java
	jetty-servlets/src/test/java/org/eclipse/jetty/servlets/gzip/GzipTester.java

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

@@ -613,6 +613,12 @@ public class Response implements HttpServletResponse
                 return;
         }
 
+        if (HttpHeaders.CONTENT_TYPE.equalsIgnoreCase(name))
+        {
+            setContentType(value);
+            return;
+        }
+        
         _fields.add(name, value);
         if (HttpHeader.CONTENT_LENGTH.is(name))
         {

jetty-server/src/test/java/org/eclipse/jetty/server/ResponseTest.java

@@ -202,6 +202,10 @@ public class ResponseTest
         response.setCharacterEncoding(null);
         response.setContentType("foo/bar");
         assertEquals("foo/bar", response.getContentType());
+        response.recycle();
+        response.addHeader("Content-Type","text/something");
+        assertEquals("text/something",response.getContentType());
+
     }
 
     @Test

jetty-servlet/src/main/java/org/eclipse/jetty/servlet/DefaultServlet.java

@@ -738,6 +738,8 @@ public class DefaultServlet extends HttpServlet implements ResourceFactory
                             {
                                 r.reset(true);
                                 r.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
+                                if (_etags)
+                                    r.getHttpFields().add(HttpHeaders.ETAG_BUFFER,content.getETag());
                                 r.flushBuffer();
                                 return false;
                             }
@@ -751,6 +753,8 @@ public class DefaultServlet extends HttpServlet implements ResourceFactory
                         { 
                             r.reset(true);
                             r.setStatus(HttpServletResponse.SC_NOT_MODIFIED);
+                            if (_etags)
+                                r.getHttpFields().add(HttpHeaders.ETAG_BUFFER,content.getETag());
                             r.flushBuffer();
                             return false;
                         }

jetty-servlets/src/test/java/org/eclipse/jetty/servlets/GzipFilterDefaultTest.java

@@ -145,7 +145,7 @@ public class GzipFilterDefaultTest
             String uri=req.getRequestURI();
             if (uri.endsWith(".deferred"))
             {
-                System.err.println("type for "+uri.substring(0,uri.length()-9)+" is "+getServletContext().getMimeType(uri.substring(0,uri.length()-9)));
+                // System.err.println("type for "+uri.substring(0,uri.length()-9)+" is "+getServletContext().getMimeType(uri.substring(0,uri.length()-9)));
                 resp.setContentType(getServletContext().getMimeType(uri.substring(0,uri.length()-9)));
             }
             
@@ -272,6 +272,57 @@ public class GzipFilterDefaultTest
             tester.stop();
         }
     }
+    
+
+    @Test
+    public void testGzipedIfModified() throws Exception
+    {
+        GzipTester tester = new GzipTester(testingdir, compressionType);
+
+        // Test content that is smaller than the buffer.
+        int filesize = CompressedResponseWrapper.DEFAULT_BUFFER_SIZE * 4;
+        tester.prepareServerFile("file.txt",filesize);
+        
+        FilterHolder holder = tester.setContentServlet(org.eclipse.jetty.servlet.DefaultServlet.class);
+        holder.setInitParameter("mimeTypes","text/plain");
+
+        try
+        {
+            tester.start();
+            HttpTester http = tester.assertIsResponseGzipCompressed("GET","file.txt",System.currentTimeMillis()-4000);
+            Assert.assertEquals("Accept-Encoding",http.getHeader("Vary"));
+        }
+        finally
+        {
+            tester.stop();
+        }
+    }
+    
+
+    @Test
+    public void testNotGzipedIfNotModified() throws Exception
+    {
+        GzipTester tester = new GzipTester(testingdir, compressionType);
+
+        // Test content that is smaller than the buffer.
+        int filesize = CompressedResponseWrapper.DEFAULT_BUFFER_SIZE * 4;
+        tester.prepareServerFile("file.txt",filesize);
+        
+        FilterHolder holder = tester.setContentServlet(org.eclipse.jetty.servlet.DefaultServlet.class);
+        holder.setInitParameter("mimeTypes","text/plain");
+        holder.setInitParameter("etags","true");
+
+        try
+        {
+            tester.start();
+            HttpTester http = tester.assertIsResponseNotModified("GET","file.txt",System.currentTimeMillis()+4000);
+        }
+        finally
+        {
+            tester.stop();
+        }
+    }
+    
 
     @Test
     public void testIsNotGzipCompressedWithQ() throws Exception