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1 // Copyright 2016 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 HEADLESS_PUBLIC_UTIL_URL_FETCHER_H_ | |
6 #define HEADLESS_PUBLIC_UTIL_URL_FETCHER_H_ | |
7 | |
8 #include <stddef.h> | |
9 #include <string> | |
10 #include <vector> | |
11 | |
12 #include "base/macros.h" | |
13 #include "base/memory/ref_counted.h" | |
14 #include "net/base/net_errors.h" | |
15 #include "url/gurl.h" | |
16 | |
17 namespace net { | |
18 class HttpRequestHeaders; | |
19 class HttpResponseHeaders; | |
20 } // namespace net | |
21 | |
22 namespace headless { | |
23 | |
24 // An interface for fetching URLs. Note these are only intended to be used once. | |
25 // TODO(alexclarke): Implement a URLFetcher that can backend onto a URLRequest | |
26 // and hook this up in headless_shell under a flag. | |
27 class URLFetcher { | |
28 public: | |
29 URLFetcher() {} | |
30 virtual ~URLFetcher() {} | |
31 | |
32 // Interface for reporting the fetch result. | |
33 class ResultListener { | |
34 public: | |
35 ResultListener() {} | |
36 | |
37 // Informs the listener that the fetch failed. | |
38 virtual void OnStartError(net::Error error) = 0; | |
39 | |
40 // Informs the listener that the fetch succeeded and returns the HTTP | |
41 // headers and the body. NOTE |body| must be owned by the caller and remain | |
42 // valid until the fetcher is destroyed, | |
43 virtual void OnFetchComplete( | |
44 const std::string& final_url, | |
Sami
2016/08/19 11:54:00
Could we use GURL for URLs everywhere?
alex clarke (OOO till 29th)
2016/08/19 12:48:58
Done.
| |
45 int http_response_code, | |
46 scoped_refptr<net::HttpResponseHeaders> response_headers, | |
47 const char* body, | |
48 size_t body_size) = 0; | |
49 | |
50 // Helper function which extracts the headers from |response_data| and calls | |
51 // OnFetchComplete. | |
52 void OnFetchCompleteExtractHeaders(const std::string& final_url, | |
53 int http_response_code, | |
54 const char* response_data, | |
55 size_t response_data_size); | |
56 | |
57 protected: | |
58 virtual ~ResultListener() {} | |
59 | |
60 private: | |
61 DISALLOW_COPY_AND_ASSIGN(ResultListener); | |
62 }; | |
63 | |
64 // Instructs the sub-class to fetch the resource. | |
65 virtual void StartFetch(const GURL& rewritten_url, | |
66 const net::HttpRequestHeaders& request_headers, | |
67 ResultListener* result_listener) = 0; | |
68 | |
69 private: | |
70 DISALLOW_COPY_AND_ASSIGN(URLFetcher); | |
71 }; | |
72 | |
73 } // namespace headless | |
74 | |
75 #endif // HEADLESS_PUBLIC_UTIL_URL_FETCHER_H_ | |
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