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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/common/network_hints.mojom.h" |
21 #include "url/gurl.h" | 22 #include "url/gurl.h" |
22 | 23 |
23 namespace network_hints { | 24 namespace network_hints { |
24 | 25 |
25 // An internal interface to the network_hints component for efficiently sending | 26 // An internal interface to the network_hints component for efficiently sending |
26 // preconnect requests to the net stack. | 27 // preconnect requests to the net stack. |
27 class RendererPreconnect { | 28 class RendererPreconnect { |
28 public: | 29 public: |
29 RendererPreconnect(); | 30 RendererPreconnect(); |
30 ~RendererPreconnect(); | 31 ~RendererPreconnect(); |
31 | 32 |
32 // Submit a preconnect request for a single connection. | 33 // Submit a preconnect request for a single connection. |
33 void Preconnect(const GURL& url, bool allow_credentials); | 34 void Preconnect(const GURL& url, bool allow_credentials); |
34 | 35 |
35 private: | 36 private: |
| 37 // Ensure that the Mojo connection to NetworkHints has been created. |
| 38 void EnsureConnected(); |
| 39 |
| 40 // |EnsureConnected()| must be called before sending messages using |
| 41 // |network_hints_|. |
| 42 mojom::NetworkHintsPtr network_hints_; |
36 | 43 |
37 DISALLOW_COPY_AND_ASSIGN(RendererPreconnect); | 44 DISALLOW_COPY_AND_ASSIGN(RendererPreconnect); |
38 }; // class RendererPreconnect | 45 }; // class RendererPreconnect |
39 | 46 |
40 } // namespace network_hints | 47 } // namespace network_hints |
41 | 48 |
42 #endif // COMPONENTS_NETWORK_HINTS_RENDERER_RENDERER_PRECONNECT_H_ | 49 #endif // COMPONENTS_NETWORK_HINTS_RENDERER_RENDERER_PRECONNECT_H_ |
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