diff -r 4af0d3dedb9d -r f08eb4df84c1 launcher/src/main/java/org/apidesign/bck2brwsr/launcher/InvocationContext.java
--- a/launcher/src/main/java/org/apidesign/bck2brwsr/launcher/InvocationContext.java	Thu Jan 31 17:39:47 2013 +0100
+++ b/launcher/src/main/java/org/apidesign/bck2brwsr/launcher/InvocationContext.java	Thu Jan 31 19:21:37 2013 +0100
@@ -18,6 +18,7 @@
 package org.apidesign.bck2brwsr.launcher;
 
 import java.io.IOException;
+import java.io.InputStream;
 import java.util.concurrent.CountDownLatch;
 import java.util.concurrent.TimeUnit;
 
@@ -33,7 +34,7 @@
     private String result;
     private Throwable exception;
     String html;
-    String httpContent;
+    InputStream httpContent;
     String httpType;
     String httpPath;
 
@@ -54,7 +55,7 @@
     /** HTTP resource to be available during execution. An invocation may
      * perform an HTTP query and obtain a resource relative to the page.
      */
-    public void setHttpResource(String relativePath, String mimeType, String content) {
+    public void setHttpResource(String relativePath, String mimeType, InputStream content) {
         if (relativePath == null || mimeType == null || content == null) {
             throw new NullPointerException();
         }