basic push cache filter

jetty-http/src/main/java/org/eclipse/jetty/http/HttpFields.java

@@ -76,7 +76,7 @@ public class HttpFields implements Iterable<HttpField>
      */
     public HttpFields(HttpFields fields)
     {
-        _fields=Arrays.copyOf(fields._fields,_fields.length+10);
+        _fields=Arrays.copyOf(fields._fields,fields._fields.length+10);
         _size=fields._size;
     }
 

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

@@ -236,6 +236,12 @@ public class Dispatcher implements RequestDispatcher
         
         baseRequest.getHttpChannel().getHttpTransport().push(push);
     }
+    
+    @Override
+    public String toString()
+    {
+        return String.format("Dispatcher@0x%x{%s,%s}",hashCode(),_named,_uri);
+    }
 
     private void commitResponse(ServletResponse response, Request baseRequest) throws IOException
     {

tests/test-webapps/test-jetty-webapp/src/main/webapp/WEB-INF/web.xml

@@ -18,6 +18,15 @@
     <listener-class>com.acme.TestListener</listener-class>
   </listener>
 
+  <filter>
+    <filter-name>PushFilter</filter-name>
+    <filter-class>org.eclipse.jetty.servlets.PushCacheFilter</filter-class>
+    <async-supported>true</async-supported>
+  </filter>  
+  <filter-mapping>
+    <filter-name>PushFilter</filter-name>
+    <url-pattern>/*</url-pattern>
+  </filter-mapping>
 
   <filter>
     <filter-name>QoSFilter</filter-name>

tests/test-webapps/test-jetty-webapp/src/test/java/org/eclipse/jetty/TestServer.java

@@ -158,6 +158,7 @@ public class TestServer
         server.setStopAtShutdown(true);
 
         WebAppContext webapp = new WebAppContext();
+        webapp.setContextPath("/test");
         webapp.setParentLoaderPriority(true);
         webapp.setResourceBase("./src/main/webapp");
         webapp.setAttribute("testAttribute","testValue");