content/browser/loader/stream_resource_handler.h

   1 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef CONTENT_BROWSER_LOADER_STREAM_RESOURCE_HANDLER_H_
   6 #define CONTENT_BROWSER_LOADER_STREAM_RESOURCE_HANDLER_H_
   7
   8 #include "base/memory/ref_counted.h"
   9 #include "base/memory/scoped_ptr.h"
  10 #include "content/browser/loader/resource_handler.h"
  11 #include "content/browser/loader/stream_writer.h"
  12
  13 namespace net {
  14 class URLRequest;
  15 }  // namespace net
  16
  17 namespace content {
  18
  19 class StreamRegistry;
  20
  21 // Redirect this resource to a stream.
  22 class StreamResourceHandler : public ResourceHandler {
  23  public:
  24   // |origin| will be used to construct the URL for the Stream. See
  25   // WebCore::BlobURL and and WebCore::SecurityOrigin in Blink to understand
  26   // how origin check is done on resource loading.
  27   StreamResourceHandler(net::URLRequest* request,
  28                         StreamRegistry* registry,
  29                         const GURL& origin);
  30   ~StreamResourceHandler() override;
  31
  32   void SetController(ResourceController* controller) override;
  33
  34   // Not needed, as this event handler ought to be the final resource.
  35   bool OnRequestRedirected(const net::RedirectInfo& redirect_info,
  36                            ResourceResponse* resp,
  37                            bool* defer) override;
  38
  39   bool OnResponseStarted(ResourceResponse* resp, bool* defer) override;
  40
  41   bool OnWillStart(const GURL& url, bool* defer) override;
  42
  43   bool OnBeforeNetworkStart(const GURL& url, bool* defer) override;
  44
  45   // Create a new buffer to store received data.
  46   bool OnWillRead(scoped_refptr<net::IOBuffer>* buf,
  47                   int* buf_size,
  48                   int min_size) override;
  49
  50   // A read was completed, forward the data to the Stream.
  51   bool OnReadCompleted(int bytes_read, bool* defer) override;
  52
  53   void OnResponseCompleted(const net::URLRequestStatus& status,
  54                            const std::string& sec_info,
  55                            bool* defer) override;
  56
  57   void OnDataDownloaded(int bytes_downloaded) override;
  58
  59   Stream* stream() { return writer_.stream(); }
  60
  61  private:
  62   StreamWriter writer_;
  63
  64   DISALLOW_COPY_AND_ASSIGN(StreamResourceHandler);
  65 };
  66
  67 }  // namespace content
  68
  69 #endif  // CONTENT_BROWSER_LOADER_STREAM_RESOURCE_HANDLER_H_