439201 GzipFilter and AsyncGzipFilter should strip charset from Content-Type before making exclusion comparison in doFilter

jetty-servlets/src/main/java/org/eclipse/jetty/servlets/AsyncGzipFilter.java

@@ -317,18 +317,22 @@ public class AsyncGzipFilter extends UserAgentFilter implements GzipFactory
             super.doFilter(request,response,chain);
             return;
         }
-        
+
         // Exclude non compressible mime-types known from URI extension. - no Vary because no matter what client, this URI is always excluded
         if (_mimeTypes.size()>0 && _excludeMimeTypes)
         {
             String mimeType = _context.getMimeType(request.getRequestURI());
-            
+
-            if (mimeType!=null && _mimeTypes.contains(mimeType))
+            if (mimeType!=null)
             {
-                LOG.debug("{} excluded by path suffix {}",this,request);
+                mimeType = MimeTypes.getContentTypeWithoutCharset(mimeType);
-                // handle normally without setting vary header
+                if (_mimeTypes.contains(mimeType))
-                super.doFilter(request,response,chain);
+                {
-                return;
+                    LOG.debug("{} excluded by path suffix {}",this,request);
+                    // handle normally without setting vary header
+                    super.doFilter(request,response,chain);
+                    return;
+                }
             }
         }
 

jetty-servlets/src/main/java/org/eclipse/jetty/servlets/GzipFilter.java

@@ -300,17 +300,21 @@ public class GzipFilter extends UserAgentFilter
             super.doFilter(request,response,chain);
             return;
         }
-        
+
         // Exclude non compressible mime-types known from URI extension. - no Vary because no matter what client, this URI is always excluded
         if (_mimeTypes.size()>0 && _excludeMimeTypes)
         {
             String mimeType = _context.getMimeType(request.getRequestURI());
-            
+
-            if (mimeType!=null && _mimeTypes.contains(mimeType))
+            if (mimeType!=null)
             {
-                // handle normally without setting vary header
+                mimeType = MimeTypes.getContentTypeWithoutCharset(mimeType);
-                super.doFilter(request,response,chain);
+                if (_mimeTypes.contains(mimeType))
-                return;
+                {
+                    // handle normally without setting vary header
+                    super.doFilter(request,response,chain);
+                    return;
+                }
             }
         }
         

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

@@ -389,6 +389,60 @@ public class GzipFilterDefaultTest
         }
     }
     
+    
+    @Test
+    public void testIsNotGzipCompressedByExcludedContentType() throws Exception
+    {
+        GzipTester tester = new GzipTester(testingdir, compressionType);
+        tester.setGzipFilterClass(testFilter);
+
+        int filesize = tester.getOutputBufferSize() * 4;
+        tester.prepareServerFile("test_quotes.txt", filesize);
+    
+
+        FilterHolder holder = tester.setContentServlet(org.eclipse.jetty.servlet.DefaultServlet.class);
+        holder.setInitParameter("excludedMimeTypes","text/plain");
+
+        try
+        {
+            tester.start();
+            HttpTester.Response http = tester.assertIsResponseNotGzipCompressed("GET","test_quotes.txt", filesize, HttpStatus.OK_200);
+            Assert.assertNull(http.get("Vary"));
+        }
+        finally
+        {
+            tester.stop();
+        }
+    }
+    
+    
+    @Test
+    public void testIsNotGzipCompressedByExcludedContentTypeWithCharset() throws Exception
+    {
+        GzipTester tester = new GzipTester(testingdir, compressionType);
+        tester.setGzipFilterClass(testFilter);
+
+        int filesize = tester.getOutputBufferSize() * 4;
+        tester.prepareServerFile("test_quotes.txt", filesize);
+        tester.addMimeType("txt","text/plain;charset=UTF-8");
+
+        FilterHolder holder = tester.setContentServlet(org.eclipse.jetty.servlet.DefaultServlet.class);
+        holder.setInitParameter("excludedMimeTypes","text/plain");
+
+        try
+        {
+            tester.start();
+            HttpTester.Response http = tester.assertIsResponseNotGzipCompressed("GET","test_quotes.txt", filesize, HttpStatus.OK_200);
+            Assert.assertNull(http.get("Vary"));
+        }
+        finally
+        {
+            tester.stop();
+        }
+    }
+    
+    
+    
     @Test
     public void testGzipCompressedByContentTypeWithEncoding() throws Exception
     { 

jetty-servlets/src/test/java/org/eclipse/jetty/servlets/gzip/GzipTester.java

@@ -395,7 +395,6 @@ public class GzipTester
         String uri = "/context/"+filename;
         HttpTester.Response response = executeRequest(method,uri);
         assertResponseHeaders(expectedFilesize,status,response);
-
         // Assert that the contents are what we expect.
         if (filename != null)
         {
@@ -636,6 +635,11 @@ public class GzipTester
     {
         this.userAgent = ua;
     }
+    
+    public void addMimeType (String extension, String mimetype)
+    {
+        this.tester.getContext().getMimeTypes().addMimeMapping(extension, mimetype);
+    }
 
     public void start() throws Exception
     {