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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><div class="line"><a name="l00002"></a><span class="lineno"> 2</span> <span class="comment">//</span></div><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><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><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><div class="line"><a name="l00006"></a><span class="lineno"> 6</span> </div><div class="line"><a name="l00007"></a><span class="lineno"> 7</span> <span class="preprocessor">#include "packager/file/udp_file.h"</span></div><div class="line"><a name="l00008"></a><span class="lineno"> 8</span> </div><div class="line"><a name="l00009"></a><span class="lineno"> 9</span> <span class="preprocessor">#if defined(OS_WIN)</span></div><div class="line"><a name="l00010"></a><span class="lineno"> 10</span> </div><div class="line"><a name="l00011"></a><span class="lineno"> 11</span> <span class="preprocessor">#include <windows.h></span></div><div class="line"><a name="l00012"></a><span class="lineno"> 12</span> <span class="preprocessor">#include <ws2tcpip.h></span></div><div class="line"><a name="l00013"></a><span class="lineno"> 13</span> <span class="preprocessor">#define close closesocket</span></div><div class="line"><a name="l00014"></a><span class="lineno"> 14</span> </div><div class="line"><a name="l00015"></a><span class="lineno"> 15</span> <span class="preprocessor">#else</span></div><div class="line"><a name="l00016"></a><span class="lineno"> 16</span> </div><div class="line"><a name="l00017"></a><span class="lineno"> 17</span> <span class="preprocessor">#include <arpa/inet.h></span></div><div class="line"><a name="l00018"></a><span class="lineno"> 18</span> <span class="preprocessor">#include <errno.h></span></div><div class="line"><a name="l00019"></a><span class="lineno"> 19</span> <span class="preprocessor">#include <strings.h></span></div><div class="line"><a name="l00020"></a><span class="lineno"> 20</span> <span class="preprocessor">#include <sys/socket.h></span></div><div class="line"><a name="l00021"></a><span class="lineno"> 21</span> <span class="preprocessor">#include <sys/time.h></span></div><div class="line"><a name="l00022"></a><span class="lineno"> 22</span> <span class="preprocessor">#include <unistd.h></span></div><div class="line"><a name="l00023"></a><span class="lineno"> 23</span> <span class="preprocessor">#define INVALID_SOCKET -1</span></div><div class="line"><a name="l00024"></a><span class="lineno"> 24</span> </div><div class="line"><a name="l00025"></a><span class="lineno"> 25</span> <span class="comment">// IP_MULTICAST_ALL has been supported since kernel version 2.6.31 but we may be</span></div><div class="line"><a name="l00026"></a><span class="lineno"> 26</span> <span class="comment">// building on a machine that is older than that.</span></div><div class="line"><a name="l00027"></a><span class="lineno"> 27</span> <span class="preprocessor">#ifndef IP_MULTICAST_ALL</span></div><div class="line"><a name="l00028"></a><span class="lineno"> 28</span> <span class="preprocessor">#define IP_MULTICAST_ALL 49</span></div><div class="line"><a name="l00029"></a><span class="lineno"> 29</span> <span class="preprocessor">#endif</span></div><div class="line"><a name="l00030"></a><span class="lineno"> 30</span> </div><div class="line"><a name="l00031"></a><span class="lineno"> 31</span> <span class="preprocessor">#endif // defined(OS_WIN)</span></div><div class="line"><a name="l00032"></a><span class="lineno"> 32</span> </div><div class="line"><a name="l00033"></a><span class="lineno"> 33</span> <span class="preprocessor">#include <limits></span></div><div class="line"><a name="l00034"></a><span class="lineno"> 34</span> </div><div class="line"><a name="l00035"></a><span class="lineno"> 35</span> <span class="preprocessor">#include "packager/base/logging.h"</span></div><div class="line"><a name="l00036"></a><span class="lineno"> 36</span> <span class="preprocessor">#include "packager/file/udp_options.h"</span></div><div class="line"><a name="l00037"></a><span class="lineno"> 37</span> </div><div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="keyword">namespace </span><a class="code" href="../../d8/daf/namespaceshaka.html">shaka</a> {</div><div class="line"><a name="l00039"></a><span class="lineno"> 39</span> </div><div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="keyword">namespace </span>{</div><div class="line"><a name="l00041"></a><span class="lineno"> 41</span> </div><div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="keywordtype">bool</span> IsIpv4MulticastAddress(<span class="keyword">const</span> <span class="keyword">struct</span> in_addr& addr) {</div><div class="line"><a name="l00043"></a><span class="lineno"> 43</span>  <span class="keywordflow">return</span> (ntohl(addr.s_addr) & 0xf0000000) == 0xe0000000;</div><div class="line"><a name="l00044"></a><span class="lineno"> 44</span> }</div><div class="line"><a name="l00045"></a><span class="lineno"> 45</span> </div><div class="line"><a name="l00046"></a><span class="lineno"> 46</span> } <span class="comment">// anonymous namespace</span></div><div class="line"><a name="l00047"></a><span class="lineno"> 47</span> </div><div class="line"><a name="l00048"></a><span class="lineno"><a class="line" href="../../d4/dcb/classshaka_1_1UdpFile.html#ad56ac611e6a1f6e4e44777c3c55e9020"> 48</a></span> <a class="code" href="../../d4/dcb/classshaka_1_1UdpFile.html#ad56ac611e6a1f6e4e44777c3c55e9020">UdpFile::UdpFile</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* file_name)</div><div class="line"><a name="l00049"></a><span class="lineno"> 49</span>  : <a class="code" href="../../d3/d73/classshaka_1_1File.html">File</a>(file_name), socket_(INVALID_SOCKET) {}</div><div class="line"><a name="l00050"></a><span class="lineno"> 50</span> </div><div class="line"><a name="l00051"></a><span class="lineno"> 51</span> UdpFile::~UdpFile() {}</div><div class="line"><a name="l00052"></a><span class="lineno"> 52</span> </div><div class="line"><a name="l00053"></a><span class="lineno"><a class="line" href="../../d4/dcb/classshaka_1_1UdpFile.html#a61cdb937b3a996bb8b054679d98df812"> 53</a></span> <span class="keywordtype">bool</span> <a class="code" href="../../d4/dcb/classshaka_1_1UdpFile.html#a61cdb937b3a996bb8b054679d98df812">UdpFile::Close</a>() {</div><div class="line"><a name="l00054"></a><span class="lineno"> 54</span>  <span class="keywordflow">if</span> (socket_ != INVALID_SOCKET) {</div><div class="line"><a name="l00055"></a><span class="lineno"> 55</span>  close(socket_);</div><div class="line"><a name="l00056"></a><span class="lineno"> 56</span>  socket_ = INVALID_SOCKET;</div><div class="line"><a name="l00057"></a><span class="lineno"> 57</span>  }</div><div class="line"><a name="l00058"></a><span class="lineno"> 58</span>  <span class="keyword">delete</span> <span class="keyword">this</span>;</div><div class="line"><a name="l00059"></a><span class="lineno"> 59</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00060"></a><span class="lineno"> 60</span> }</div><div class="line"><a name="l00061"></a><span class="lineno"> 61</span> </div><div class="line"><a name="l00062"></a><span class="lineno"><a class="line" href="../../d4/dcb/classshaka_1_1UdpFile.html#a74d352b51d543905abd4a12687e1bb98"> 62</a></span> int64_t <a class="code" href="../../d4/dcb/classshaka_1_1UdpFile.html#a74d352b51d543905abd4a12687e1bb98">UdpFile::Read</a>(<span class="keywordtype">void</span>* buffer, uint64_t length) {</div><div class="line"><a name="l00063"></a><span class="lineno"> 63</span>  DCHECK(buffer);</div><div class="line"><a name="l00064"></a><span class="lineno"> 64</span>  DCHECK_GE(length, 65535u)</div><div class="line"><a name="l00065"></a><span class="lineno"> 65</span>  << <span class="stringliteral">"Buffer may be too small to read entire datagram."</span>;</div><div class="line"><a name="l00066"></a><span class="lineno"> 66</span> </div><div class="line"><a name="l00067"></a><span class="lineno"> 67</span>  <span class="keywordflow">if</span> (socket_ == INVALID_SOCKET)</div><div class="line"><a name="l00068"></a><span class="lineno"> 68</span>  <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00069"></a><span class="lineno"> 69</span> </div><div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  int64_t result;</div><div class="line"><a name="l00071"></a><span class="lineno"> 71</span>  <span class="keywordflow">do</span> {</div><div class="line"><a name="l00072"></a><span class="lineno"> 72</span>  result =</div><div class="line"><a name="l00073"></a><span class="lineno"> 73</span>  recvfrom(socket_, reinterpret_cast<char*>(buffer), length, 0, NULL, 0);</div><div class="line"><a name="l00074"></a><span class="lineno"> 74</span>  } <span class="keywordflow">while</span> ((result == -1) && (errno == EINTR));</div><div class="line"><a name="l00075"></a><span class="lineno"> 75</span> </div><div class="line"><a name="l00076"></a><span class="lineno"> 76</span>  <span class="keywordflow">return</span> result;</div><div class="line"><a name="l00077"></a><span class="lineno"> 77</span> }</div><div class="line"><a name="l00078"></a><span class="lineno"> 78</span> </div><div class="line"><a name="l00079"></a><span class="lineno"><a class="line" href="../../d4/dcb/classshaka_1_1UdpFile.html#a36722f3c436c88e451093ee21c0db754"> 79</a></span> int64_t <a class="code" href="../../d4/dcb/classshaka_1_1UdpFile.html#a36722f3c436c88e451093ee21c0db754">UdpFile::Write</a>(<span class="keyword">const</span> <span class="keywordtype">void</span>* buffer, uint64_t length) {</div><div class="line"><a name="l00080"></a><span class="lineno"> 80</span>  NOTIMPLEMENTED();</div><div class="line"><a name="l00081"></a><span class="lineno"> 81</span>  <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00082"></a><span class="lineno"> 82</span> }</div><div class="line"><a name="l00083"></a><span class="lineno"> 83</span> </div><div class="line"><a name="l00084"></a><span class="lineno"><a class="line" href="../../d4/dcb/classshaka_1_1UdpFile.html#a0a1c8d7af211bba4da62eb44504d745d"> 84</a></span> int64_t <a class="code" href="../../d4/dcb/classshaka_1_1UdpFile.html#a0a1c8d7af211bba4da62eb44504d745d">UdpFile::Size</a>() {</div><div class="line"><a name="l00085"></a><span class="lineno"> 85</span>  <span class="keywordflow">if</span> (socket_ == INVALID_SOCKET)</div><div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  <span class="keywordflow">return</span> -1;</div><div class="line"><a name="l00087"></a><span class="lineno"> 87</span> </div><div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  <span class="keywordflow">return</span> std::numeric_limits<int64_t>::max();</div><div class="line"><a name="l00089"></a><span class="lineno"> 89</span> }</div><div class="line"><a name="l00090"></a><span class="lineno"> 90</span> </div><div class="line"><a name="l00091"></a><span class="lineno"><a class="line" href="../../d4/dcb/classshaka_1_1UdpFile.html#a4b5430ec1d24434f5f6d9b20692efbc2"> 91</a></span> <span class="keywordtype">bool</span> <a class="code" href="../../d4/dcb/classshaka_1_1UdpFile.html#a4b5430ec1d24434f5f6d9b20692efbc2">UdpFile::Flush</a>() {</div><div class="line"><a name="l00092"></a><span class="lineno"> 92</span>  NOTIMPLEMENTED();</div><div class="line"><a name="l00093"></a><span class="lineno"> 93</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00094"></a><span class="lineno"> 94</span> }</div><div class="line"><a name="l00095"></a><span class="lineno"> 95</span> </div><div class="line"><a name="l00096"></a><span class="lineno"><a class="line" href="../../d4/dcb/classshaka_1_1UdpFile.html#a33d10d2f1558a35aaba192f7746bb23f"> 96</a></span> <span class="keywordtype">bool</span> <a class="code" href="../../d4/dcb/classshaka_1_1UdpFile.html#a33d10d2f1558a35aaba192f7746bb23f">UdpFile::Seek</a>(uint64_t position) {</div><div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  NOTIMPLEMENTED();</div><div class="line"><a name="l00098"></a><span class="lineno"> 98</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00099"></a><span class="lineno"> 99</span> }</div><div class="line"><a name="l00100"></a><span class="lineno"> 100</span> </div><div class="line"><a name="l00101"></a><span class="lineno"><a class="line" href="../../d4/dcb/classshaka_1_1UdpFile.html#a4024a139655cf22f2cf2b4e56be8e1fc"> 101</a></span> <span class="keywordtype">bool</span> <a class="code" href="../../d4/dcb/classshaka_1_1UdpFile.html#a4024a139655cf22f2cf2b4e56be8e1fc">UdpFile::Tell</a>(uint64_t* position) {</div><div class="line"><a name="l00102"></a><span class="lineno"> 102</span>  NOTIMPLEMENTED();</div><div class="line"><a name="l00103"></a><span class="lineno"> 103</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00104"></a><span class="lineno"> 104</span> }</div><div class="line"><a name="l00105"></a><span class="lineno"> 105</span> </div><div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="preprocessor">#if defined(OS_WIN)</span></div><div class="line"><a name="l00107"></a><span class="lineno"> 107</span> <span class="keyword">class </span>LibWinsockInitializer {</div><div class="line"><a name="l00108"></a><span class="lineno"> 108</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00109"></a><span class="lineno"> 109</span>  LibWinsockInitializer() {</div><div class="line"><a name="l00110"></a><span class="lineno"> 110</span>  WSADATA wsa_data;</div><div class="line"><a name="l00111"></a><span class="lineno"> 111</span>  error_ = WSAStartup(MAKEWORD(2, 2), &wsa_data);</div><div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  }</div><div class="line"><a name="l00113"></a><span class="lineno"> 113</span> </div><div class="line"><a name="l00114"></a><span class="lineno"> 114</span>  ~LibWinsockInitializer() {</div><div class="line"><a name="l00115"></a><span class="lineno"> 115</span>  <span class="keywordflow">if</span> (error_ == 0)</div><div class="line"><a name="l00116"></a><span class="lineno"> 116</span>  WSACleanup();</div><div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  }</div><div class="line"><a name="l00118"></a><span class="lineno"> 118</span> </div><div class="line"><a name="l00119"></a><span class="lineno"> 119</span>  <span class="keywordtype">int</span> error()<span class="keyword"> const </span>{ <span class="keywordflow">return</span> error_; }</div><div class="line"><a name="l00120"></a><span class="lineno"> 120</span> </div><div class="line"><a name="l00121"></a><span class="lineno"> 121</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00122"></a><span class="lineno"> 122</span>  <span class="keywordtype">int</span> error_;</div><div class="line"><a name="l00123"></a><span class="lineno"> 123</span> };</div><div class="line"><a name="l00124"></a><span class="lineno"> 124</span> <span class="preprocessor">#endif // defined(OS_WIN)</span></div><div class="line"><a name="l00125"></a><span class="lineno"> 125</span> </div><div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="keyword">class </span>ScopedSocket {</div><div class="line"><a name="l00127"></a><span class="lineno"> 127</span>  <span class="keyword">public</span>:</div><div class="line"><a name="l00128"></a><span class="lineno"> 128</span>  <span class="keyword">explicit</span> ScopedSocket(SOCKET sock_fd) : sock_fd_(sock_fd) {}</div><div class="line"><a name="l00129"></a><span class="lineno"> 129</span> </div><div class="line"><a name="l00130"></a><span class="lineno"> 130</span>  ~ScopedSocket() {</div><div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  <span class="keywordflow">if</span> (sock_fd_ != INVALID_SOCKET)</div><div class="line"><a name="l00132"></a><span class="lineno"> 132</span>  close(sock_fd_);</div><div class="line"><a name="l00133"></a><span class="lineno"> 133</span>  }</div><div class="line"><a name="l00134"></a><span class="lineno"> 134</span> </div><div class="line"><a name="l00135"></a><span class="lineno"> 135</span>  SOCKET <span class="keyword">get</span>() { <span class="keywordflow">return</span> sock_fd_; }</div><div class="line"><a name="l00136"></a><span class="lineno"> 136</span> </div><div class="line"><a name="l00137"></a><span class="lineno"> 137</span>  SOCKET release() {</div><div class="line"><a name="l00138"></a><span class="lineno"> 138</span>  SOCKET socket = sock_fd_;</div><div class="line"><a name="l00139"></a><span class="lineno"> 139</span>  sock_fd_ = INVALID_SOCKET;</div><div class="line"><a name="l00140"></a><span class="lineno"> 140</span>  <span class="keywordflow">return</span> socket;</div><div class="line"><a name="l00141"></a><span class="lineno"> 141</span>  }</div><div class="line"><a name="l00142"></a><span class="lineno"> 142</span> </div><div class="line"><a name="l00143"></a><span class="lineno"> 143</span>  <span class="keyword">private</span>:</div><div class="line"><a name="l00144"></a><span class="lineno"> 144</span>  SOCKET sock_fd_;</div><div class="line"><a name="l00145"></a><span class="lineno"> 145</span> </div><div class="line"><a name="l00146"></a><span class="lineno"> 146</span>  DISALLOW_COPY_AND_ASSIGN(ScopedSocket);</div><div class="line"><a name="l00147"></a><span class="lineno"> 147</span> };</div><div class="line"><a name="l00148"></a><span class="lineno"> 148</span> </div><div class="line"><a name="l00149"></a><span class="lineno"><a class="line" href="../../d4/dcb/classshaka_1_1UdpFile.html#abebdd864ece2240f84faf0f602fc27ce"> 149</a></span> <span class="keywordtype">bool</span> <a class="code" href="../../d4/dcb/classshaka_1_1UdpFile.html#abebdd864ece2240f84faf0f602fc27ce">UdpFile::Open</a>() {</div><div class="line"><a name="l00150"></a><span class="lineno"> 150</span> <span class="preprocessor">#if defined(OS_WIN)</span></div><div class="line"><a name="l00151"></a><span class="lineno"> 151</span>  <span class="keyword">static</span> LibWinsockInitializer lib_winsock_initializer;</div><div class="line"><a name="l00152"></a><span class="lineno"> 152</span>  <span class="keywordflow">if</span> (lib_winsock_initializer.error() != 0) {</div><div class="line"><a name="l00153"></a><span class="lineno"> 153</span>  LOG(ERROR) << <span class="stringliteral">"Winsock start up failed with error "</span></div><div class="line"><a name="l00154"></a><span class="lineno"> 154</span>  << lib_winsock_initializer.error();</div><div class="line"><a name="l00155"></a><span class="lineno"> 155</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00156"></a><span class="lineno"> 156</span>  }</div><div class="line"><a name="l00157"></a><span class="lineno"> 157</span> <span class="preprocessor">#endif // defined(OS_WIN)</span></div><div class="line"><a name="l00158"></a><span class="lineno"> 158</span> </div><div class="line"><a name="l00159"></a><span class="lineno"> 159</span>  DCHECK_EQ(INVALID_SOCKET, socket_);</div><div class="line"><a name="l00160"></a><span class="lineno"> 160</span> </div><div class="line"><a name="l00161"></a><span class="lineno"> 161</span>  std::unique_ptr<UdpOptions> options =</div><div class="line"><a name="l00162"></a><span class="lineno"> 162</span>  <a class="code" href="../../d9/dfe/classshaka_1_1UdpOptions.html#a3dff92e7ffb1ed0864dd87842aa2ad03">UdpOptions::ParseFromString</a>(<a class="code" href="../../d3/d73/classshaka_1_1File.html#a4b06e08bb0295cb89fca45f9356ecbae">file_name</a>());</div><div class="line"><a name="l00163"></a><span class="lineno"> 163</span>  <span class="keywordflow">if</span> (!options)</div><div class="line"><a name="l00164"></a><span class="lineno"> 164</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00165"></a><span class="lineno"> 165</span> </div><div class="line"><a name="l00166"></a><span class="lineno"> 166</span>  ScopedSocket new_socket(socket(AF_INET, SOCK_DGRAM, 0));</div><div class="line"><a name="l00167"></a><span class="lineno"> 167</span>  <span class="keywordflow">if</span> (new_socket.get() == INVALID_SOCKET) {</div><div class="line"><a name="l00168"></a><span class="lineno"> 168</span>  LOG(ERROR) << <span class="stringliteral">"Could not allocate socket."</span>;</div><div class="line"><a name="l00169"></a><span class="lineno"> 169</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00170"></a><span class="lineno"> 170</span>  }</div><div class="line"><a name="l00171"></a><span class="lineno"> 171</span> </div><div class="line"><a name="l00172"></a><span class="lineno"> 172</span>  <span class="keyword">struct </span>in_addr local_in_addr = {0};</div><div class="line"><a name="l00173"></a><span class="lineno"> 173</span>  <span class="keywordflow">if</span> (inet_pton(AF_INET, options->address().c_str(), &local_in_addr) != 1) {</div><div class="line"><a name="l00174"></a><span class="lineno"> 174</span>  LOG(ERROR) << <span class="stringliteral">"Malformed IPv4 address "</span> << options->address();</div><div class="line"><a name="l00175"></a><span class="lineno"> 175</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00176"></a><span class="lineno"> 176</span>  }</div><div class="line"><a name="l00177"></a><span class="lineno"> 177</span> </div><div class="line"><a name="l00178"></a><span class="lineno"> 178</span>  <span class="keyword">struct </span>sockaddr_in local_sock_addr = {0};</div><div class="line"><a name="l00179"></a><span class="lineno"> 179</span>  <span class="comment">// TODO(kqyang): Support IPv6.</span></div><div class="line"><a name="l00180"></a><span class="lineno"> 180</span>  local_sock_addr.sin_family = AF_INET;</div><div class="line"><a name="l00181"></a><span class="lineno"> 181</span>  local_sock_addr.sin_port = htons(options->port());</div><div class="line"><a name="l00182"></a><span class="lineno"> 182</span>  <span class="keyword">const</span> <span class="keywordtype">bool</span> is_multicast = IsIpv4MulticastAddress(local_in_addr);</div><div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  <span class="keywordflow">if</span> (is_multicast) {</div><div class="line"><a name="l00184"></a><span class="lineno"> 184</span>  local_sock_addr.sin_addr.s_addr = htonl(INADDR_ANY);</div><div class="line"><a name="l00185"></a><span class="lineno"> 185</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00186"></a><span class="lineno"> 186</span>  local_sock_addr.sin_addr = local_in_addr;</div><div class="line"><a name="l00187"></a><span class="lineno"> 187</span>  }</div><div class="line"><a name="l00188"></a><span class="lineno"> 188</span> </div><div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  <span class="keywordflow">if</span> (options->reuse()) {</div><div class="line"><a name="l00190"></a><span class="lineno"> 190</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> optval = 1;</div><div class="line"><a name="l00191"></a><span class="lineno"> 191</span>  <span class="keywordflow">if</span> (setsockopt(new_socket.get(), SOL_SOCKET, SO_REUSEADDR,</div><div class="line"><a name="l00192"></a><span class="lineno"> 192</span>  <span class="keyword">reinterpret_cast<</span><span class="keyword">const </span><span class="keywordtype">char</span>*<span class="keyword">></span>(&optval),</div><div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="keyword">sizeof</span>(optval)) < 0) {</div><div class="line"><a name="l00194"></a><span class="lineno"> 194</span>  LOG(ERROR)</div><div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  << <span class="stringliteral">"Could not apply the SO_REUSEADDR property to the UDP socket"</span>;</div><div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00197"></a><span class="lineno"> 197</span>  }</div><div class="line"><a name="l00198"></a><span class="lineno"> 198</span>  }</div><div class="line"><a name="l00199"></a><span class="lineno"> 199</span> </div><div class="line"><a name="l00200"></a><span class="lineno"> 200</span>  <span class="keywordflow">if</span> (bind(new_socket.get(),</div><div class="line"><a name="l00201"></a><span class="lineno"> 201</span>  <span class="keyword">reinterpret_cast<</span>struct sockaddr*<span class="keyword">></span>(&local_sock_addr),</div><div class="line"><a name="l00202"></a><span class="lineno"> 202</span>  <span class="keyword">sizeof</span>(local_sock_addr))) {</div><div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  LOG(ERROR) << <span class="stringliteral">"Could not bind UDP socket"</span>;</div><div class="line"><a name="l00204"></a><span class="lineno"> 204</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  }</div><div class="line"><a name="l00206"></a><span class="lineno"> 206</span> </div><div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <span class="keywordflow">if</span> (is_multicast) {</div><div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <span class="keywordflow">if</span> (options->is_source_specific_multicast()) {</div><div class="line"><a name="l00209"></a><span class="lineno"> 209</span>  <span class="keyword">struct </span>ip_mreq_source source_multicast_group;</div><div class="line"><a name="l00210"></a><span class="lineno"> 210</span> </div><div class="line"><a name="l00211"></a><span class="lineno"> 211</span>  source_multicast_group.imr_multiaddr = local_in_addr;</div><div class="line"><a name="l00212"></a><span class="lineno"> 212</span>  <span class="keywordflow">if</span> (inet_pton(AF_INET,</div><div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  options->interface_address().c_str(),</div><div class="line"><a name="l00214"></a><span class="lineno"> 214</span>  &source_multicast_group.imr_interface) != 1) {</div><div class="line"><a name="l00215"></a><span class="lineno"> 215</span>  LOG(ERROR) << <span class="stringliteral">"Malformed IPv4 interface address "</span></div><div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  << options->interface_address();</div><div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  }</div><div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  <span class="keywordflow">if</span> (inet_pton(AF_INET,</div><div class="line"><a name="l00220"></a><span class="lineno"> 220</span>  options->source_address().c_str(),</div><div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  &source_multicast_group.imr_sourceaddr) != 1) {</div><div class="line"><a name="l00222"></a><span class="lineno"> 222</span>  LOG(ERROR) << <span class="stringliteral">"Malformed IPv4 source specific multicast address "</span></div><div class="line"><a name="l00223"></a><span class="lineno"> 223</span>  << options->source_address();</div><div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  }</div><div class="line"><a name="l00226"></a><span class="lineno"> 226</span> </div><div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <span class="keywordflow">if</span> (setsockopt(new_socket.get(),</div><div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  IPPROTO_IP,</div><div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  IP_ADD_SOURCE_MEMBERSHIP,</div><div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <span class="keyword">reinterpret_cast<</span><span class="keyword">const </span><span class="keywordtype">char</span>*<span class="keyword">></span>(&source_multicast_group),</div><div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  <span class="keyword">sizeof</span>(source_multicast_group)) < 0) {</div><div class="line"><a name="l00232"></a><span class="lineno"> 232</span>  LOG(ERROR) << <span class="stringliteral">"Failed to join multicast group."</span>;</div><div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00234"></a><span class="lineno"> 234</span>  }</div><div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  } <span class="keywordflow">else</span> {</div><div class="line"><a name="l00236"></a><span class="lineno"> 236</span>  <span class="comment">// this is a v2 join without a specific source.</span></div><div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  <span class="keyword">struct </span>ip_mreq multicast_group;</div><div class="line"><a name="l00238"></a><span class="lineno"> 238</span> </div><div class="line"><a name="l00239"></a><span class="lineno"> 239</span>  multicast_group.imr_multiaddr = local_in_addr;</div><div class="line"><a name="l00240"></a><span class="lineno"> 240</span> </div><div class="line"><a name="l00241"></a><span class="lineno"> 241</span>  <span class="keywordflow">if</span> (inet_pton(AF_INET, options->interface_address().c_str(),</div><div class="line"><a name="l00242"></a><span class="lineno"> 242</span>  &multicast_group.imr_interface) != 1) {</div><div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  LOG(ERROR) << <span class="stringliteral">"Malformed IPv4 interface address "</span></div><div class="line"><a name="l00244"></a><span class="lineno"> 244</span>  << options->interface_address();</div><div class="line"><a name="l00245"></a><span class="lineno"> 245</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00246"></a><span class="lineno"> 246</span>  }</div><div class="line"><a name="l00247"></a><span class="lineno"> 247</span> </div><div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  <span class="keywordflow">if</span> (setsockopt(new_socket.get(), IPPROTO_IP, IP_ADD_MEMBERSHIP,</div><div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <span class="keyword">reinterpret_cast<</span><span class="keyword">const </span><span class="keywordtype">char</span>*<span class="keyword">></span>(&multicast_group),</div><div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="keyword">sizeof</span>(multicast_group)) < 0) {</div><div class="line"><a name="l00251"></a><span class="lineno"> 251</span>  LOG(ERROR) << <span class="stringliteral">"Failed to join multicast group."</span>;</div><div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00253"></a><span class="lineno"> 253</span>  }</div><div class="line"><a name="l00254"></a><span class="lineno"> 254</span> </div><div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  }</div><div class="line"><a name="l00256"></a><span class="lineno"> 256</span> </div><div class="line"><a name="l00257"></a><span class="lineno"> 257</span> <span class="preprocessor">#if defined(__linux__)</span></div><div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  <span class="comment">// Disable IP_MULTICAST_ALL to avoid interference caused when two sockets</span></div><div class="line"><a name="l00259"></a><span class="lineno"> 259</span>  <span class="comment">// are bound to the same port but joined to different multicast groups.</span></div><div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> optval_zero = 0;</div><div class="line"><a name="l00261"></a><span class="lineno"> 261</span>  <span class="keywordflow">if</span> (setsockopt(new_socket.get(), IPPROTO_IP, IP_MULTICAST_ALL,</div><div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  <span class="keyword">reinterpret_cast<</span><span class="keyword">const </span><span class="keywordtype">char</span>*<span class="keyword">></span>(&optval_zero),</div><div class="line"><a name="l00263"></a><span class="lineno"> 263</span>  <span class="keyword">sizeof</span>(optval_zero)) < 0 &&</div><div class="line"><a name="l00264"></a><span class="lineno"> 264</span>  errno != ENOPROTOOPT) {</div><div class="line"><a name="l00265"></a><span class="lineno"> 265</span>  LOG(ERROR) << <span class="stringliteral">"Failed to disable IP_MULTICAST_ALL option."</span>;</div><div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00267"></a><span class="lineno"> 267</span>  }</div><div class="line"><a name="l00268"></a><span class="lineno"> 268</span> <span class="preprocessor">#endif // #if defined(__linux__)</span></div><div class="line"><a name="l00269"></a><span class="lineno"> 269</span>  }</div><div class="line"><a name="l00270"></a><span class="lineno"> 270</span> </div><div class="line"><a name="l00271"></a><span class="lineno"> 271</span>  <span class="comment">// Set timeout if needed.</span></div><div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  <span class="keywordflow">if</span> (options->timeout_us() != 0) {</div><div class="line"><a name="l00273"></a><span class="lineno"> 273</span>  <span class="keyword">struct </span>timeval tv;</div><div class="line"><a name="l00274"></a><span class="lineno"> 274</span>  tv.tv_sec = options->timeout_us() / 1000000;</div><div class="line"><a name="l00275"></a><span class="lineno"> 275</span>  tv.tv_usec = options->timeout_us() % 1000000;</div><div class="line"><a name="l00276"></a><span class="lineno"> 276</span>  <span class="keywordflow">if</span> (setsockopt(new_socket.get(), SOL_SOCKET, SO_RCVTIMEO,</div><div class="line"><a name="l00277"></a><span class="lineno"> 277</span>  <span class="keyword">reinterpret_cast<</span><span class="keyword">const </span><span class="keywordtype">char</span>*<span class="keyword">></span>(&tv), <span class="keyword">sizeof</span>(tv)) < 0) {</div><div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  LOG(ERROR) << <span class="stringliteral">"Failed to set socket timeout."</span>;</div><div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00280"></a><span class="lineno"> 280</span>  }</div><div class="line"><a name="l00281"></a><span class="lineno"> 281</span>  }</div><div class="line"><a name="l00282"></a><span class="lineno"> 282</span> </div><div class="line"><a name="l00283"></a><span class="lineno"> 283</span>  <span class="keywordflow">if</span> (options->buffer_size() > 0) {</div><div class="line"><a name="l00284"></a><span class="lineno"> 284</span>  <span class="keyword">const</span> <span class="keywordtype">int</span> receive_buffer_size = options->buffer_size();</div><div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  <span class="keywordflow">if</span> (setsockopt(new_socket.get(), SOL_SOCKET, SO_RCVBUF,</div><div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  <span class="keyword">reinterpret_cast<</span><span class="keyword">const </span><span class="keywordtype">char</span>*<span class="keyword">></span>(&receive_buffer_size),</div><div class="line"><a name="l00287"></a><span class="lineno"> 287</span>  <span class="keyword">sizeof</span>(receive_buffer_size)) < 0) {</div><div class="line"><a name="l00288"></a><span class="lineno"> 288</span>  LOG(ERROR) << <span class="stringliteral">"Failed to set the maximum receive buffer size: "</span></div><div class="line"><a name="l00289"></a><span class="lineno"> 289</span>  << strerror(errno);</div><div class="line"><a name="l00290"></a><span class="lineno"> 290</span>  <span class="keywordflow">return</span> <span class="keyword">false</span>;</div><div class="line"><a name="l00291"></a><span class="lineno"> 291</span>  }</div><div class="line"><a name="l00292"></a><span class="lineno"> 292</span>  }</div><div class="line"><a name="l00293"></a><span class="lineno"> 293</span> </div><div class="line"><a name="l00294"></a><span class="lineno"> 294</span>  socket_ = new_socket.release();</div><div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  <span class="keywordflow">return</span> <span class="keyword">true</span>;</div><div class="line"><a name="l00296"></a><span class="lineno"> 296</span> }</div><div class="line"><a name="l00297"></a><span class="lineno"> 297</span> </div><div class="line"><a name="l00298"></a><span class="lineno"> 298</span> } <span class="comment">// namespace shaka</span></div><div class="ttc" id="classshaka_1_1UdpFile_html_a74d352b51d543905abd4a12687e1bb98"><div class="ttname"><a href="../../d4/dcb/classshaka_1_1UdpFile.html#a74d352b51d543905abd4a12687e1bb98">shaka::UdpFile::Read</a></div><div class="ttdeci">int64_t Read(void *buffer, uint64_t length) override</div><div class="ttdef"><b>Definition:</b> <a href="../../db/d66/udp__file_8cc_source.html#l00062">udp_file.cc:62</a></div></div>
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<div class="ttc" id="classshaka_1_1UdpFile_html_a4024a139655cf22f2cf2b4e56be8e1fc"><div class="ttname"><a href="../../d4/dcb/classshaka_1_1UdpFile.html#a4024a139655cf22f2cf2b4e56be8e1fc">shaka::UdpFile::Tell</a></div><div class="ttdeci">bool Tell(uint64_t *position) override</div><div class="ttdef"><b>Definition:</b> <a href="../../db/d66/udp__file_8cc_source.html#l00101">udp_file.cc:101</a></div></div>
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<div class="ttc" id="classshaka_1_1UdpFile_html_a33d10d2f1558a35aaba192f7746bb23f"><div class="ttname"><a href="../../d4/dcb/classshaka_1_1UdpFile.html#a33d10d2f1558a35aaba192f7746bb23f">shaka::UdpFile::Seek</a></div><div class="ttdeci">bool Seek(uint64_t position) override</div><div class="ttdef"><b>Definition:</b> <a href="../../db/d66/udp__file_8cc_source.html#l00096">udp_file.cc:96</a></div></div>
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<div class="ttc" id="classshaka_1_1UdpFile_html_ad56ac611e6a1f6e4e44777c3c55e9020"><div class="ttname"><a href="../../d4/dcb/classshaka_1_1UdpFile.html#ad56ac611e6a1f6e4e44777c3c55e9020">shaka::UdpFile::UdpFile</a></div><div class="ttdeci">UdpFile(const char *address_and_port)</div><div class="ttdef"><b>Definition:</b> <a href="../../db/d66/udp__file_8cc_source.html#l00048">udp_file.cc:48</a></div></div>
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<div class="ttc" id="classshaka_1_1UdpOptions_html_a3dff92e7ffb1ed0864dd87842aa2ad03"><div class="ttname"><a href="../../d9/dfe/classshaka_1_1UdpOptions.html#a3dff92e7ffb1ed0864dd87842aa2ad03">shaka::UdpOptions::ParseFromString</a></div><div class="ttdeci">static std::unique_ptr< UdpOptions > ParseFromString(base::StringPiece udp_url)</div><div class="ttdef"><b>Definition:</b> <a href="../../da/d1d/udp__options_8cc_source.html#l00075">udp_options.cc:75</a></div></div>
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<div class="ttc" id="classshaka_1_1File_html"><div class="ttname"><a href="../../d3/d73/classshaka_1_1File.html">shaka::File</a></div><div class="ttdoc">Define an abstract file interface. </div><div class="ttdef"><b>Definition:</b> <a href="../../d2/d4d/file_8h_source.html#l00026">file.h:26</a></div></div>
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<div class="ttc" id="classshaka_1_1UdpFile_html_a36722f3c436c88e451093ee21c0db754"><div class="ttname"><a href="../../d4/dcb/classshaka_1_1UdpFile.html#a36722f3c436c88e451093ee21c0db754">shaka::UdpFile::Write</a></div><div class="ttdeci">int64_t Write(const void *buffer, uint64_t length) override</div><div class="ttdef"><b>Definition:</b> <a href="../../db/d66/udp__file_8cc_source.html#l00079">udp_file.cc:79</a></div></div>
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<div class="ttc" id="classshaka_1_1File_html_a4b06e08bb0295cb89fca45f9356ecbae"><div class="ttname"><a href="../../d3/d73/classshaka_1_1File.html#a4b06e08bb0295cb89fca45f9356ecbae">shaka::File::file_name</a></div><div class="ttdeci">const std::string & file_name() const</div><div class="ttdef"><b>Definition:</b> <a href="../../d2/d4d/file_8h_source.html#l00094">file.h:94</a></div></div>
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<div class="ttc" id="namespaceshaka_html"><div class="ttname"><a href="../../d8/daf/namespaceshaka.html">shaka</a></div><div class="ttdoc">All the methods that are virtual are virtual for mocking. </div><div class="ttdef"><b>Definition:</b> <a href="../../d4/d15/gflags__hex__bytes_8cc_source.html#l00011">gflags_hex_bytes.cc:11</a></div></div>
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<div class="ttc" id="classshaka_1_1UdpFile_html_a61cdb937b3a996bb8b054679d98df812"><div class="ttname"><a href="../../d4/dcb/classshaka_1_1UdpFile.html#a61cdb937b3a996bb8b054679d98df812">shaka::UdpFile::Close</a></div><div class="ttdeci">bool Close() override</div><div class="ttdef"><b>Definition:</b> <a href="../../db/d66/udp__file_8cc_source.html#l00053">udp_file.cc:53</a></div></div>
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<div class="ttc" id="classshaka_1_1UdpFile_html_abebdd864ece2240f84faf0f602fc27ce"><div class="ttname"><a href="../../d4/dcb/classshaka_1_1UdpFile.html#abebdd864ece2240f84faf0f602fc27ce">shaka::UdpFile::Open</a></div><div class="ttdeci">bool Open() override</div><div class="ttdoc">Internal open. Should not be used directly. </div><div class="ttdef"><b>Definition:</b> <a href="../../db/d66/udp__file_8cc_source.html#l00149">udp_file.cc:149</a></div></div>
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<div class="ttc" id="classshaka_1_1UdpFile_html_a0a1c8d7af211bba4da62eb44504d745d"><div class="ttname"><a href="../../d4/dcb/classshaka_1_1UdpFile.html#a0a1c8d7af211bba4da62eb44504d745d">shaka::UdpFile::Size</a></div><div class="ttdeci">int64_t Size() override</div><div class="ttdef"><b>Definition:</b> <a href="../../db/d66/udp__file_8cc_source.html#l00084">udp_file.cc:84</a></div></div>
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<div class="ttc" id="classshaka_1_1UdpFile_html_a4b5430ec1d24434f5f6d9b20692efbc2"><div class="ttname"><a href="../../d4/dcb/classshaka_1_1UdpFile.html#a4b5430ec1d24434f5f6d9b20692efbc2">shaka::UdpFile::Flush</a></div><div class="ttdeci">bool Flush() override</div><div class="ttdef"><b>Definition:</b> <a href="../../db/d66/udp__file_8cc_source.html#l00091">udp_file.cc:91</a></div></div>
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