text: /*
   * Copyright (C) 2010 Google Inc. All rights reserved.
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions are
   * met:
   *
   *     * Redistributions of source code must retain the above copyright
   * notice, this list of conditions and the following disclaimer.
   *     * Redistributions in binary form must reproduce the above
   * copyright notice, this list of conditions and the following disclaimer
   * in the documentation and/or other materials provided with the
   * distribution.
   *     * Neither the name of Google Inc. nor the names of its
   * contributors may be used to endorse or promote products derived from
   * this software without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
   * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
   * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
   * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
   * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
   * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
   * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
   * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
   * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
   *
   */
  
  #ifndef THIRD_PARTY_BLINK_RENDERER_CORE_LOADER_PING_LOADER_H_
  #define THIRD_PARTY_BLINK_RENDERER_CORE_LOADER_PING_LOADER_H_
  
  #include <memory>
  
  #include "third_party/blink/public/platform/web_url_loader_client.h"
  #include "third_party/blink/renderer/core/core_export.h"
  #include "third_party/blink/renderer/platform/heap/handle.h"
  #include "third_party/blink/renderer/platform/heap/self_keep_alive.h"
  #include "third_party/blink/renderer/platform/timer.h"
  #include "third_party/blink/renderer/platform/wtf/forward.h"
  
  namespace blink {
  
  class Blob;
  class DOMArrayBufferView;
  class EncodedFormData;
  class FormData;
  class LocalFrame;
  class KURL;
  
  // Issue an asynchronous, one-directional request at some resources, ignoring
  // any response. The request is made independent of any LocalFrame staying
  // alive, and must only stay alive until the transmission has completed
  // successfully (or not -- errors are not propagated back either.) Upon
  // transmission, the load is cancelled and the loader cancels itself.
  //
  // The ping loader is used by audit pings, beacon transmissions and image loads
  // during page unloading.
  class CORE_EXPORT PingLoader {
    STATIC_ONLY(PingLoader);
  
   public:
    static void SendLinkAuditPing(LocalFrame*,
                                  const KURL& ping_url,
                                  const KURL& destination_url);
    static void SendViolationReport(LocalFrame*,
                                    const KURL& report_url,
                                    scoped_refptr<EncodedFormData> report);
  
    // The last argument is guaranteed to be set to the size of payload if
    // these method return true. If these method returns false, the value
    // shouldn't be used.
    // Note: To ensure the correct Javascript world is used for CSP checks, these
    // should be called synchronously from the point navigator.sendBeacon is
    // called.
    static bool SendBeacon(LocalFrame*, const KURL&, const String&);
    static bool SendBeacon(LocalFrame*, const KURL&, DOMArrayBufferView*);
    static bool SendBeacon(LocalFrame*, const KURL&, Blob*);
    static bool SendBeacon(LocalFrame*, const KURL&, FormData*);
  };
  
  }  // namespace blink
  
  #endif  // THIRD_PARTY_BLINK_RENDERER_CORE_LOADER_PING_LOADER_H_
  