GRAILS-10990: IncludeResponseWrapper doesn't override all methods necessary to wrap response

- code from GRAILS-10990, author Craig Andrews

Author: lhotari

grails-web/src/main/groovy/org/codehaus/groovy/grails/web/util/IncludeResponseWrapper.java

@@ -92,12 +92,14 @@ public void setLocale(Locale locale) {
 
     @Override
     public void sendError(int i, String s) throws IOException {
+        if(isCommitted()) throw new IllegalStateException("Response already committed");
         setStatus(i);
         flushBuffer();
     }
 
     @Override
     public void sendError(int i) throws IOException {
+        if(isCommitted()) throw new IllegalStateException("Response already committed");
         setStatus(i);
         flushBuffer();
     }
@@ -159,4 +161,36 @@ public Object getContent(String encoding) throws CharacterCodingException {
 
         return "";
     }
+    
+    @Override
+    public void resetBuffer() {
+       if(isCommitted()) throw new IllegalStateException("Response already committed");
+       if (usingWriter) {
+          charBuffer.reset();
+       }
+
+       if (usingStream) {
+          byteBuffer.reset();
+       }
+    }
+
+    @Override
+    public void reset() {
+        resetBuffer();
+    }    
+
+    @Override
+    public void setContentLength(int len) {
+       // do nothing
+    }
+    
+    @Override
+    public void setStatus(int sc, String sm) {
+       setStatus(sc);
+    }
+    
+    @Override
+    public void flushBuffer() {
+       // do nothing
+    }
 }