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1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 // A RendererPreconnect instance is maintained for each RenderThread. | 5 // A RendererPreconnect instance is maintained for each RenderThread. |
6 // URL strings are typically added to the embedded queue during rendering. | 6 // URL strings are typically added to the embedded queue during rendering. |
7 // The first addition to the queue (transitioning from empty to having | 7 // The first addition to the queue (transitioning from empty to having |
8 // some names) causes a processing task to be added to the Renderer Thread. | 8 // some names) causes a processing task to be added to the Renderer Thread. |
9 // The processing task gathers all buffered URLs, and send them via IPC | 9 // The processing task gathers all buffered URLs, and send them via IPC |
10 // to the browser. | 10 // to the browser. |
11 // This class counts repeated requests for the same URL and requests that | 11 // This class counts repeated requests for the same URL and requests that |
12 // number of connections be preconnected. If multiple requests are sent | 12 // number of connections be preconnected. If multiple requests are sent |
13 // separately the net stack will just keep re-using the first pending | 13 // separately the net stack will just keep re-using the first pending |
14 // connection so we allow for the time between the parsing of the tags and | 14 // connection so we allow for the time between the parsing of the tags and |
15 // when the task is scheduled to accumulate multiple requests. | 15 // when the task is scheduled to accumulate multiple requests. |
16 | 16 |
17 #ifndef COMPONENTS_NETWORK_HINTS_RENDERER_RENDERER_PRECONNECT_H_ | 17 #ifndef COMPONENTS_NETWORK_HINTS_RENDERER_RENDERER_PRECONNECT_H_ |
18 #define COMPONENTS_NETWORK_HINTS_RENDERER_RENDERER_PRECONNECT_H_ | 18 #define COMPONENTS_NETWORK_HINTS_RENDERER_RENDERER_PRECONNECT_H_ |
19 | 19 |
20 #include "base/macros.h" | 20 #include "base/macros.h" |
21 #include "components/network_hints/public/interfaces/network_hints.mojom.h" | |
22 #include "url/gurl.h" | 21 #include "url/gurl.h" |
23 | 22 |
24 namespace network_hints { | 23 namespace network_hints { |
25 | 24 |
26 // An internal interface to the network_hints component for efficiently sending | 25 // An internal interface to the network_hints component for efficiently sending |
27 // preconnect requests to the net stack. | 26 // preconnect requests to the net stack. |
28 class RendererPreconnect { | 27 class RendererPreconnect { |
29 public: | 28 public: |
30 RendererPreconnect(); | 29 RendererPreconnect(); |
31 ~RendererPreconnect(); | 30 ~RendererPreconnect(); |
32 | 31 |
33 // Submit a preconnect request for a single connection. | 32 // Submit a preconnect request for a single connection. |
34 void Preconnect(const GURL& url, bool allow_credentials); | 33 void Preconnect(const GURL& url, bool allow_credentials); |
35 | 34 |
36 private: | 35 private: |
37 // Get a connected NetworkHints. | |
38 mojom::NetworkHints& GetNetworkHints(); | |
39 | |
40 // Don't use directly. Instead call |GetNetworkHints()|. | |
41 mojom::NetworkHintsPtr network_hints_; | |
42 | 36 |
43 DISALLOW_COPY_AND_ASSIGN(RendererPreconnect); | 37 DISALLOW_COPY_AND_ASSIGN(RendererPreconnect); |
44 }; // class RendererPreconnect | 38 }; // class RendererPreconnect |
45 | 39 |
46 } // namespace network_hints | 40 } // namespace network_hints |
47 | 41 |
48 #endif // COMPONENTS_NETWORK_HINTS_RENDERER_RENDERER_PRECONNECT_H_ | 42 #endif // COMPONENTS_NETWORK_HINTS_RENDERER_RENDERER_PRECONNECT_H_ |
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