Home | History | Annotate | Download | only in platform 
      1 /*
      2  * Copyright (C) 2013 Google Inc. All rights reserved.
      3  *
      4  * Redistribution and use in source and binary forms, with or without
      5  * modification, are permitted provided that the following conditions are
      6  * met:
      7  *
      8  *     * Redistributions of source code must retain the above copyright
      9  * notice, this list of conditions and the following disclaimer.
     10  *     * Redistributions in binary form must reproduce the above
     11  * copyright notice, this list of conditions and the following disclaimer
     12  * in the documentation and/or other materials provided with the
     13  * distribution.
     14  *     * Neither the name of Google Inc. nor the names of its
     15  * contributors may be used to endorse or promote products derived from
     16  * this software without specific prior written permission.
     17  *
     18  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     19  * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     20  * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     21  * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     22  * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     23  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     24  * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     25  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     26  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     27  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     28  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     29  */
     30 
     31 #ifndef WebPrescientNetworking_h
     32 #define WebPrescientNetworking_h
     33 
     34 #include "WebCommon.h"
     35 #include "WebString.h"
     36 
     37 namespace blink {
     38 
     39 class WebURL;
     40 
     41 // FIXME: Passing preconnect motivation to the platform is layering vioration.
     42 // However, this is done temporarily to perform a Finch field trial to enable
     43 // preconnect in different triggers one at a time. This enum can be safely
     44 // removed after the field trial is done.
     45 enum WebPreconnectMotivation {
     46     WebPreconnectMotivationLinkMouseDown,
     47     WebPreconnectMotivationLinkMouseOver,
     48     WebPreconnectMotivationLinkTapUnconfirmed,
     49     WebPreconnectMotivationLinkTapDown,
     50 };
     51 
     52 class WebPrescientNetworking {
     53 public:
     54     virtual ~WebPrescientNetworking() { }
     55 
     56     // When a page navigation is speculated, DNS prefetch is triggered to hide
     57     // the host resolution latency.
     58     virtual void prefetchDNS(const WebString& hostname) { }
     59 
     60     // When a page navigation is speculated, preconnect is triggered to hide
     61     // session initialization latency to the server providing the page resource.
     62     virtual void preconnect(const WebURL&, WebPreconnectMotivation) { }
     63 };
     64 
     65 } // namespace blink
     66 
     67 #endif // WebPrescientNetworking_h
     68