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<li class="navelem"><a class="el" href="../../dir_39dc0668bd5a501998f94e8b4e546c71.html">media</a></li><li class="navelem"><a class="el" href="../../dir_c6ada2450b25ab5438a4dba6c9b890af.html">base</a></li> </ul>
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<div class="title">http_key_fetcher.cc</div> </div>
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<div class="contents">
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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span> <span class="comment">// Copyright 2014 Google Inc. All rights reserved.</span></div>
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<div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">//</span></div>
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<div class="line"><a name="l00003"></a><span class="lineno"> 3</span> <span class="comment">// Use of this source code is governed by a BSD-style</span></div>
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<div class="line"><a name="l00004"></a><span class="lineno"> 4</span> <span class="comment">// license that can be found in the LICENSE file or at</span></div>
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<div class="line"><a name="l00005"></a><span class="lineno"> 5</span> <span class="comment">// https://developers.google.com/open-source/licenses/bsd</span></div>
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<div class="line"><a name="l00006"></a><span class="lineno"> 6</span> </div>
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<div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#include "packager/media/base/http_key_fetcher.h"</span></div>
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<div class="line"><a name="l00008"></a><span class="lineno"> 8</span> </div>
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<div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#include <curl/curl.h></span></div>
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<div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div>
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<div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include "packager/base/logging.h"</span></div>
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<div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include "packager/base/strings/stringprintf.h"</span></div>
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<div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#include "packager/base/synchronization/lock.h"</span></div>
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<div class="line"><a name="l00014"></a><span class="lineno"> 14</span> </div>
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<div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="keyword">namespace </span>shaka {</div>
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<div class="line"><a name="l00016"></a><span class="lineno"> 16</span> </div>
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<div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="keyword">namespace </span>{</div>
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<div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="keyword">const</span> <span class="keywordtype">char</span> kUserAgentString[] = <span class="stringliteral">"shaka-packager-http_fetcher/1.0"</span>;</div>
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<div class="line"><a name="l00019"></a><span class="lineno"> 19</span> </div>
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<div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="comment">// Scoped CURL implementation which cleans up itself when goes out of scope.</span></div>
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<div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="keyword">class </span>ScopedCurl {</div>
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<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>  <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>  ScopedCurl() { ptr_ = curl_easy_init(); }</div>
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<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>  ~ScopedCurl() {</div>
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<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>  <span class="keywordflow">if</span> (ptr_)</div>
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<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>  curl_easy_cleanup(ptr_);</div>
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<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>  }</div>
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<div class="line"><a name="l00028"></a><span class="lineno"> 28</span> </div>
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<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>  CURL* <span class="keyword">get</span>() { <span class="keywordflow">return</span> ptr_; }</div>
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<div class="line"><a name="l00030"></a><span class="lineno"> 30</span> </div>
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<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>  <span class="keyword">private</span>:</div>
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<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>  CURL* ptr_;</div>
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<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>  DISALLOW_COPY_AND_ASSIGN(ScopedCurl);</div>
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<div class="line"><a name="l00034"></a><span class="lineno"> 34</span> };</div>
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<div class="line"><a name="l00035"></a><span class="lineno"> 35</span> </div>
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<div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="keywordtype">size_t</span> AppendToString(<span class="keywordtype">char</span>* ptr, <span class="keywordtype">size_t</span> size, <span class="keywordtype">size_t</span> nmemb, std::string* response) {</div>
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<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>  DCHECK(ptr);</div>
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<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>  DCHECK(response);</div>
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<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>  <span class="keyword">const</span> <span class="keywordtype">size_t</span> total_size = size * nmemb;</div>
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<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>  response->append(ptr, total_size);</div>
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<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>  <span class="keywordflow">return</span> total_size;</div>
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<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> }</div>
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<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> </div>
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<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="keyword">class </span>LibCurlInitializer {</div>
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<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>  <span class="keyword">public</span>:</div>
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<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>  LibCurlInitializer() : initialized_(false) {</div>
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<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>  base::AutoLock lock(lock_);</div>
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<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>  <span class="keywordflow">if</span> (!initialized_) {</div>
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<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  curl_global_init(CURL_GLOBAL_DEFAULT);</div>
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<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>  initialized_ = <span class="keyword">true</span>;</div>
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<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>  }</div>
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<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>  }</div>
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<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> </div>
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<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  ~LibCurlInitializer() {</div>
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<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  base::AutoLock lock(lock_);</div>
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<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  <span class="keywordflow">if</span> (initialized_) {</div>
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<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  curl_global_cleanup();</div>
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<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  initialized_ = <span class="keyword">false</span>;</div>
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<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  }</div>
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<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>  }</div>
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<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> </div>
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<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>  <span class="keyword">private</span>:</div>
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<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  base::Lock lock_;</div>
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<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  <span class="keywordtype">bool</span> initialized_;</div>
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<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> </div>
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<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>  DISALLOW_COPY_AND_ASSIGN(LibCurlInitializer);</div>
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<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> };</div>
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<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> </div>
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<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> } <span class="comment">// namespace</span></div>
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<div class="line"><a name="l00070"></a><span class="lineno"> 70</span> </div>
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<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="keyword">namespace </span>media {</div>
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<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> </div>
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<div class="line"><a name="l00073"></a><span class="lineno"><a class="line" href="../../d7/de0/classshaka_1_1media_1_1HttpKeyFetcher.html#a02561dcbbaf66152dce3ebd466810f15"> 73</a></span> <a class="code" href="../../d7/de0/classshaka_1_1media_1_1HttpKeyFetcher.html#a02561dcbbaf66152dce3ebd466810f15">HttpKeyFetcher::HttpKeyFetcher</a>() : timeout_in_seconds_(0) {}</div>
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<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> </div>
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<div class="line"><a name="l00075"></a><span class="lineno"><a class="line" href="../../d7/de0/classshaka_1_1media_1_1HttpKeyFetcher.html#a11829a5c6e3507998c4d93c83c3069a4"> 75</a></span> <a class="code" href="../../d7/de0/classshaka_1_1media_1_1HttpKeyFetcher.html#a02561dcbbaf66152dce3ebd466810f15">HttpKeyFetcher::HttpKeyFetcher</a>(uint32_t timeout_in_seconds)</div>
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<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  : timeout_in_seconds_(timeout_in_seconds) {}</div>
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<div class="line"><a name="l00077"></a><span class="lineno"> 77</span> </div>
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<div class="line"><a name="l00078"></a><span class="lineno"> 78</span> HttpKeyFetcher::~HttpKeyFetcher() {}</div>
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<div class="line"><a name="l00079"></a><span class="lineno"> 79</span> </div>
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<div class="line"><a name="l00080"></a><span class="lineno"><a class="line" href="../../d7/de0/classshaka_1_1media_1_1HttpKeyFetcher.html#ab8e9b01fac00aa5dafb8983acd7a297b"> 80</a></span> <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> <a class="code" href="../../d7/de0/classshaka_1_1media_1_1HttpKeyFetcher.html#ab8e9b01fac00aa5dafb8983acd7a297b">HttpKeyFetcher::FetchKeys</a>(<span class="keyword">const</span> std::string& url,</div>
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<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keyword">const</span> std::string& request,</div>
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<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>  std::string* response) {</div>
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<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>  <span class="keywordflow">return</span> <a class="code" href="../../d7/de0/classshaka_1_1media_1_1HttpKeyFetcher.html#a31e904e2f802e5626c4420675c76d513">Post</a>(url, request, response);</div>
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<div class="line"><a name="l00084"></a><span class="lineno"> 84</span> }</div>
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<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> </div>
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<div class="line"><a name="l00086"></a><span class="lineno"><a class="line" href="../../d7/de0/classshaka_1_1media_1_1HttpKeyFetcher.html#a6b5b2c193d6055ca49d2d6af2b2ac4cc"> 86</a></span> <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> <a class="code" href="../../d7/de0/classshaka_1_1media_1_1HttpKeyFetcher.html#a6b5b2c193d6055ca49d2d6af2b2ac4cc">HttpKeyFetcher::Get</a>(<span class="keyword">const</span> std::string& path, std::string* response) {</div>
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<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>  <span class="keywordflow">return</span> FetchInternal(GET, path, <span class="stringliteral">""</span>, response);</div>
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<div class="line"><a name="l00088"></a><span class="lineno"> 88</span> }</div>
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<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> </div>
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<div class="line"><a name="l00090"></a><span class="lineno"><a class="line" href="../../d7/de0/classshaka_1_1media_1_1HttpKeyFetcher.html#a31e904e2f802e5626c4420675c76d513"> 90</a></span> <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> <a class="code" href="../../d7/de0/classshaka_1_1media_1_1HttpKeyFetcher.html#a31e904e2f802e5626c4420675c76d513">HttpKeyFetcher::Post</a>(<span class="keyword">const</span> std::string& path,</div>
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<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>  <span class="keyword">const</span> std::string& data,</div>
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<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  std::string* response) {</div>
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|
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordflow">return</span> FetchInternal(POST, path, data, response);</div>
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<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> }</div>
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<div class="line"><a name="l00095"></a><span class="lineno"> 95</span> </div>
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<div class="line"><a name="l00096"></a><span class="lineno"> 96</span> <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a> HttpKeyFetcher::FetchInternal(HttpMethod method,</div>
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|
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  <span class="keyword">const</span> std::string& path,</div>
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<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keyword">const</span> std::string& data,</div>
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|
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span>  std::string* response) {</div>
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|
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>  DCHECK(method == GET || method == POST);</div>
|
|
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> </div>
|
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<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  <span class="keyword">static</span> LibCurlInitializer lib_curl_initializer;</div>
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<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> </div>
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<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>  ScopedCurl scoped_curl;</div>
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<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>  CURL* curl = scoped_curl.get();</div>
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<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>  <span class="keywordflow">if</span> (!curl) {</div>
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<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  LOG(ERROR) << <span class="stringliteral">"curl_easy_init() failed."</span>;</div>
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<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keywordflow">return</span> <a class="code" href="../../d0/d93/classshaka_1_1media_1_1Status.html">Status</a>(error::HTTP_FAILURE, <span class="stringliteral">"curl_easy_init() failed."</span>);</div>
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<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  }</div>
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<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  response->clear();</div>
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<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> </div>
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<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  curl_easy_setopt(curl, CURLOPT_URL, path.c_str());</div>
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<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>  curl_easy_setopt(curl, CURLOPT_USERAGENT, kUserAgentString);</div>
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<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  curl_easy_setopt(curl, CURLOPT_TIMEOUT, timeout_in_seconds_);</div>
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<div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  curl_easy_setopt(curl, CURLOPT_FAILONERROR, 1L);</div>
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<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION, 1L);</div>
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<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, AppendToString);</div>
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<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>  curl_easy_setopt(curl, CURLOPT_WRITEDATA, response);</div>
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<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keywordflow">if</span> (method == POST) {</div>
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<div class="line"><a name="l00120"></a><span class="lineno"> 120</span>  curl_easy_setopt(curl, CURLOPT_POSTFIELDS, data.c_str());</div>
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<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  curl_easy_setopt(curl, CURLOPT_POSTFIELDSIZE, data.size());</div>
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<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  }</div>
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<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> </div>
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<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  CURLcode res = curl_easy_perform(curl);</div>
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<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>  <span class="keywordflow">if</span> (res != CURLE_OK) {</div>
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<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>  std::string error_message = base::StringPrintf(</div>
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<div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="stringliteral">"curl_easy_perform() failed: %s."</span>, curl_easy_strerror(res));</div>
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<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keywordflow">if</span> (res == CURLE_HTTP_RETURNED_ERROR) {</div>
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<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>  <span class="keywordtype">long</span> response_code = 0;</div>
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<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  curl_easy_getinfo(curl, CURLINFO_RESPONSE_CODE, &response_code);</div>
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<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  error_message += base::StringPrintf(<span class="stringliteral">" Response code: %ld."</span>, response_code);</div>
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<div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  }</div>
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<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> </div>
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<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>  LOG(ERROR) << error_message;</div>
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<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  <span class="keywordflow">return</span> Status(</div>
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<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>  res == CURLE_OPERATION_TIMEDOUT ? error::TIME_OUT : error::HTTP_FAILURE,</div>
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<div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  error_message);</div>
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<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  }</div>
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<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  <span class="keywordflow">return</span> Status::OK;</div>
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<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> }</div>
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<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> </div>
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<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> } <span class="comment">// namespace media</span></div>
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<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> } <span class="comment">// namespace shaka</span></div>
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<div class="ttc" id="classshaka_1_1media_1_1HttpKeyFetcher_html_a6b5b2c193d6055ca49d2d6af2b2ac4cc"><div class="ttname"><a href="../../d7/de0/classshaka_1_1media_1_1HttpKeyFetcher.html#a6b5b2c193d6055ca49d2d6af2b2ac4cc">shaka::media::HttpKeyFetcher::Get</a></div><div class="ttdeci">virtual Status Get(const std::string &url, std::string *response)</div><div class="ttdef"><b>Definition:</b> <a href="../../de/d70/http__key__fetcher_8cc_source.html#l00086">http_key_fetcher.cc:86</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1Status_html"><div class="ttname"><a href="../../d0/d93/classshaka_1_1media_1_1Status.html">shaka::media::Status</a></div><div class="ttdef"><b>Definition:</b> <a href="../../d1/d13/status_8h_source.html#l00075">status.h:75</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1HttpKeyFetcher_html_ab8e9b01fac00aa5dafb8983acd7a297b"><div class="ttname"><a href="../../d7/de0/classshaka_1_1media_1_1HttpKeyFetcher.html#ab8e9b01fac00aa5dafb8983acd7a297b">shaka::media::HttpKeyFetcher::FetchKeys</a></div><div class="ttdeci">Status FetchKeys(const std::string &url, const std::string &request, std::string *response) override</div><div class="ttdef"><b>Definition:</b> <a href="../../de/d70/http__key__fetcher_8cc_source.html#l00080">http_key_fetcher.cc:80</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1HttpKeyFetcher_html_a02561dcbbaf66152dce3ebd466810f15"><div class="ttname"><a href="../../d7/de0/classshaka_1_1media_1_1HttpKeyFetcher.html#a02561dcbbaf66152dce3ebd466810f15">shaka::media::HttpKeyFetcher::HttpKeyFetcher</a></div><div class="ttdeci">HttpKeyFetcher()</div><div class="ttdoc">Creates a fetcher with no timeout. </div><div class="ttdef"><b>Definition:</b> <a href="../../de/d70/http__key__fetcher_8cc_source.html#l00073">http_key_fetcher.cc:73</a></div></div>
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<div class="ttc" id="classshaka_1_1media_1_1HttpKeyFetcher_html_a31e904e2f802e5626c4420675c76d513"><div class="ttname"><a href="../../d7/de0/classshaka_1_1media_1_1HttpKeyFetcher.html#a31e904e2f802e5626c4420675c76d513">shaka::media::HttpKeyFetcher::Post</a></div><div class="ttdeci">virtual Status Post(const std::string &url, const std::string &data, std::string *response)</div><div class="ttdef"><b>Definition:</b> <a href="../../de/d70/http__key__fetcher_8cc_source.html#l00090">http_key_fetcher.cc:90</a></div></div>
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