|  | <!DOCTYPE html> | 
|  | <html> | 
|  | <title>Service Workers: OpaqueResponse</title> | 
|  | <head> | 
|  | <link rel="help" href="https://slightlyoff.github.io/ServiceWorker/spec/service_worker/#opaque-response"> | 
|  | <script src="/resources/testharness.js"></script> | 
|  | <script src="/resources/testharnessreport.js"></script> | 
|  |  | 
|  | </head> | 
|  | <body> | 
|  |  | 
|  | <!-- | 
|  |  | 
|  | `OpaqueResponse` objects are immutable but constructable. The `fetch()` API | 
|  | returns this type for cross-origin responses. | 
|  |  | 
|  | Their role is to encapsulate the security properties of the web platform. As | 
|  | such, their `body` attribute will always be `undefined` and the list of | 
|  | readable `headers` is heavily filtered. | 
|  |  | 
|  | `OpaqueResponse` objects may be forwarded on to rendering documents in exactly | 
|  | the same way as mutable `Response` objects. | 
|  |  | 
|  | --> | 
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|  |  | 
|  | <script> | 
|  | test(function() { | 
|  | // not_implemented(); | 
|  | }, "There are no tests for section OpaqueResponse so far."); | 
|  | </script> | 
|  |  | 
|  | </body> | 
|  | </html> | 
|  |  |