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<div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>&#160;<span class="comment">// Copyright 2014 Google Inc. All rights reserved.</span></div>
<div class="line"><a name="l00002"></a><span class="lineno"> 2</span>&#160;<span class="comment">//</span></div>
<div class="line"><a name="l00003"></a><span class="lineno"> 3</span>&#160;<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>&#160;<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>&#160;<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>&#160;</div>
<div class="line"><a name="l00007"></a><span class="lineno"> 7</span>&#160;<span class="preprocessor">#include &quot;packager/media/file/udp_file.h&quot;</span></div>
<div class="line"><a name="l00008"></a><span class="lineno"> 8</span>&#160;</div>
<div class="line"><a name="l00009"></a><span class="lineno"> 9</span>&#160;<span class="preprocessor">#include &lt;arpa/inet.h&gt;</span></div>
<div class="line"><a name="l00010"></a><span class="lineno"> 10</span>&#160;<span class="preprocessor">#include &lt;errno.h&gt;</span></div>
<div class="line"><a name="l00011"></a><span class="lineno"> 11</span>&#160;<span class="preprocessor">#include &lt;gflags/gflags.h&gt;</span></div>
<div class="line"><a name="l00012"></a><span class="lineno"> 12</span>&#160;<span class="preprocessor">#include &lt;strings.h&gt;</span></div>
<div class="line"><a name="l00013"></a><span class="lineno"> 13</span>&#160;<span class="preprocessor">#include &lt;sys/socket.h&gt;</span></div>
<div class="line"><a name="l00014"></a><span class="lineno"> 14</span>&#160;<span class="preprocessor">#include &lt;unistd.h&gt;</span></div>
<div class="line"><a name="l00015"></a><span class="lineno"> 15</span>&#160;</div>
<div class="line"><a name="l00016"></a><span class="lineno"> 16</span>&#160;<span class="preprocessor">#include &lt;limits&gt;</span></div>
<div class="line"><a name="l00017"></a><span class="lineno"> 17</span>&#160;</div>
<div class="line"><a name="l00018"></a><span class="lineno"> 18</span>&#160;<span class="preprocessor">#include &quot;packager/base/logging.h&quot;</span></div>
<div class="line"><a name="l00019"></a><span class="lineno"> 19</span>&#160;<span class="preprocessor">#include &quot;packager/base/strings/string_number_conversions.h&quot;</span></div>
<div class="line"><a name="l00020"></a><span class="lineno"> 20</span>&#160;</div>
<div class="line"><a name="l00021"></a><span class="lineno"> 21</span>&#160;<span class="comment">// TODO(tinskip): Adapt to work with winsock.</span></div>
<div class="line"><a name="l00022"></a><span class="lineno"> 22</span>&#160;</div>
<div class="line"><a name="l00023"></a><span class="lineno"> 23</span>&#160;DEFINE_string(udp_interface_address,</div>
<div class="line"><a name="l00024"></a><span class="lineno"> 24</span>&#160; <span class="stringliteral">&quot;0.0.0.0&quot;</span>,</div>
<div class="line"><a name="l00025"></a><span class="lineno"> 25</span>&#160; <span class="stringliteral">&quot;IP address of the interface over which to receive UDP unicast&quot;</span></div>
<div class="line"><a name="l00026"></a><span class="lineno"> 26</span>&#160; <span class="stringliteral">&quot; or multicast streams&quot;</span>);</div>
<div class="line"><a name="l00027"></a><span class="lineno"> 27</span>&#160;</div>
<div class="line"><a name="l00028"></a><span class="lineno"> 28</span>&#160;<span class="keyword">namespace </span>edash_packager {</div>
<div class="line"><a name="l00029"></a><span class="lineno"> 29</span>&#160;<span class="keyword">namespace </span>media {</div>
<div class="line"><a name="l00030"></a><span class="lineno"> 30</span>&#160;</div>
<div class="line"><a name="l00031"></a><span class="lineno"> 31</span>&#160;<span class="keyword">namespace </span>{</div>
<div class="line"><a name="l00032"></a><span class="lineno"> 32</span>&#160;</div>
<div class="line"><a name="l00033"></a><span class="lineno"> 33</span>&#160;<span class="keyword">const</span> <span class="keywordtype">int</span> kInvalidSocket(-1);</div>
<div class="line"><a name="l00034"></a><span class="lineno"> 34</span>&#160;</div>
<div class="line"><a name="l00035"></a><span class="lineno"> 35</span>&#160;<span class="keywordtype">bool</span> StringToIpv4Address(<span class="keyword">const</span> std::string&amp; addr_in, uint32_t* addr_out) {</div>
<div class="line"><a name="l00036"></a><span class="lineno"> 36</span>&#160; DCHECK(addr_out);</div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span>&#160;</div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span>&#160; *addr_out = 0;</div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span>&#160; <span class="keywordtype">size_t</span> start_pos(0);</div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span>&#160; <span class="keywordtype">size_t</span> end_pos(0);</div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span>&#160; <span class="keywordflow">for</span> (<span class="keywordtype">int</span> i = 0; i &lt; 4; ++i) {</div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span>&#160; end_pos = addr_in.find(<span class="charliteral">&#39;.&#39;</span>, start_pos);</div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span>&#160; <span class="keywordflow">if</span> ((end_pos == std::string::npos) != (i == 3))</div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span>&#160; <span class="keywordtype">unsigned</span> addr_byte;</div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span>&#160; <span class="keywordflow">if</span> (!base::StringToUint(addr_in.substr(start_pos, end_pos - start_pos),</div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span>&#160; &amp;addr_byte)</div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span>&#160; || (addr_byte &gt; 255))</div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span>&#160; *addr_out &lt;&lt;= 8;</div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span>&#160; *addr_out |= addr_byte;</div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span>&#160; start_pos = end_pos + 1;</div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span>&#160; }</div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span>&#160;}</div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span>&#160;</div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span>&#160;<span class="keywordtype">bool</span> StringToIpv4AddressAndPort(<span class="keyword">const</span> std::string&amp; addr_and_port,</div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span>&#160; uint32_t* addr,</div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span>&#160; uint16_t* port) {</div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span>&#160; DCHECK(addr);</div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span>&#160; DCHECK(port);</div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span>&#160;</div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span>&#160; <span class="keywordtype">size_t</span> colon_pos = addr_and_port.find(<span class="charliteral">&#39;:&#39;</span>);</div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span>&#160; <span class="keywordflow">if</span> (colon_pos == std::string::npos) {</div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span>&#160; }</div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span>&#160; <span class="keywordflow">if</span> (!StringToIpv4Address(addr_and_port.substr(0, colon_pos), addr))</div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span>&#160; <span class="keywordtype">unsigned</span> port_value;</div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>&#160; <span class="keywordflow">if</span> (!base::StringToUint(addr_and_port.substr(colon_pos + 1),</div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span>&#160; &amp;port_value) ||</div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span>&#160; (port_value &gt; 65535))</div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span>&#160; *port = port_value;</div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00076"></a><span class="lineno"> 76</span>&#160;}</div>
<div class="line"><a name="l00077"></a><span class="lineno"> 77</span>&#160;</div>
<div class="line"><a name="l00078"></a><span class="lineno"> 78</span>&#160;<span class="keywordtype">bool</span> IsIpv4MulticastAddress(uint32_t addr) {</div>
<div class="line"><a name="l00079"></a><span class="lineno"> 79</span>&#160; <span class="keywordflow">return</span> (addr &amp; 0xf0000000) == 0xe0000000;</div>
<div class="line"><a name="l00080"></a><span class="lineno"> 80</span>&#160;}</div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span>&#160;</div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span>&#160;} <span class="comment">// anonymous namespace</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span>&#160;</div>
<div class="line"><a name="l00084"></a><span class="lineno"><a class="line" href="../../d8/dc7/classedash__packager_1_1media_1_1UdpFile.html#ad52585a56c199c3f5887d5dd77be9142"> 84</a></span>&#160;<a class="code" href="../../d8/dc7/classedash__packager_1_1media_1_1UdpFile.html#ad52585a56c199c3f5887d5dd77be9142">UdpFile::UdpFile</a>(<span class="keyword">const</span> <span class="keywordtype">char</span>* file_name) :</div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span>&#160; <a class="code" href="../../de/d19/classedash__packager_1_1media_1_1File.html">File</a>(file_name),</div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>&#160; socket_(kInvalidSocket) {}</div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span>&#160;</div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>&#160;UdpFile::~UdpFile() {}</div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span>&#160;</div>
<div class="line"><a name="l00090"></a><span class="lineno"><a class="line" href="../../d8/dc7/classedash__packager_1_1media_1_1UdpFile.html#a10c51a75395ecb97f89124e296a349d9"> 90</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="../../d8/dc7/classedash__packager_1_1media_1_1UdpFile.html#a10c51a75395ecb97f89124e296a349d9">UdpFile::Close</a>() {</div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span>&#160; <span class="keywordflow">if</span> (socket_ != kInvalidSocket) {</div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span>&#160; close(socket_);</div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span>&#160; socket_ = kInvalidSocket;</div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span>&#160; }</div>
<div class="line"><a name="l00095"></a><span class="lineno"> 95</span>&#160; <span class="keyword">delete</span> <span class="keyword">this</span>;</div>
<div class="line"><a name="l00096"></a><span class="lineno"> 96</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>&#160;}</div>
<div class="line"><a name="l00098"></a><span class="lineno"> 98</span>&#160;</div>
<div class="line"><a name="l00099"></a><span class="lineno"><a class="line" href="../../d8/dc7/classedash__packager_1_1media_1_1UdpFile.html#aefea0adecf58c67cfde19e095ef027c3"> 99</a></span>&#160;int64_t <a class="code" href="../../d8/dc7/classedash__packager_1_1media_1_1UdpFile.html#aefea0adecf58c67cfde19e095ef027c3">UdpFile::Read</a>(<span class="keywordtype">void</span>* buffer, uint64_t length) {</div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span>&#160; DCHECK(buffer);</div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span>&#160; DCHECK_GE(length, 65535u)</div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span>&#160; &lt;&lt; <span class="stringliteral">&quot;Buffer may be too small to read entire datagram.&quot;</span>;</div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span>&#160;</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span>&#160; <span class="keywordflow">if</span> (socket_ == kInvalidSocket)</div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span>&#160; <span class="keywordflow">return</span> -1;</div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span>&#160;</div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>&#160; int64_t result;</div>
<div class="line"><a name="l00108"></a><span class="lineno"> 108</span>&#160; <span class="keywordflow">do</span> {</div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span>&#160; result = recvfrom(socket_, buffer, length, 0, NULL, 0);</div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span>&#160; } <span class="keywordflow">while</span> ((result == -1) &amp;&amp; (errno == EINTR));</div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span>&#160;</div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>&#160; <span class="keywordflow">return</span> result;</div>
<div class="line"><a name="l00113"></a><span class="lineno"> 113</span>&#160;}</div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span>&#160;</div>
<div class="line"><a name="l00115"></a><span class="lineno"><a class="line" href="../../d8/dc7/classedash__packager_1_1media_1_1UdpFile.html#adc71ee86f3926b7869e088f1f0bae0a4"> 115</a></span>&#160;int64_t <a class="code" href="../../d8/dc7/classedash__packager_1_1media_1_1UdpFile.html#adc71ee86f3926b7869e088f1f0bae0a4">UdpFile::Write</a>(<span class="keyword">const</span> <span class="keywordtype">void</span>* buffer, uint64_t length) {</div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span>&#160; NOTIMPLEMENTED();</div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>&#160; <span class="keywordflow">return</span> -1;</div>
<div class="line"><a name="l00118"></a><span class="lineno"> 118</span>&#160;}</div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span>&#160;</div>
<div class="line"><a name="l00120"></a><span class="lineno"><a class="line" href="../../d8/dc7/classedash__packager_1_1media_1_1UdpFile.html#a8d62376715aee117aa7a225b54be0945"> 120</a></span>&#160;int64_t <a class="code" href="../../d8/dc7/classedash__packager_1_1media_1_1UdpFile.html#a8d62376715aee117aa7a225b54be0945">UdpFile::Size</a>() {</div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span>&#160; <span class="keywordflow">if</span> (socket_ == kInvalidSocket)</div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span>&#160; <span class="keywordflow">return</span> -1;</div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span>&#160;</div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>&#160; <span class="keywordflow">return</span> std::numeric_limits&lt;int64_t&gt;::max();</div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span>&#160;}</div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span>&#160;</div>
<div class="line"><a name="l00127"></a><span class="lineno"><a class="line" href="../../d8/dc7/classedash__packager_1_1media_1_1UdpFile.html#acde300494ef44cdbefac7dbf27b6707f"> 127</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="../../d8/dc7/classedash__packager_1_1media_1_1UdpFile.html#acde300494ef44cdbefac7dbf27b6707f">UdpFile::Flush</a>() {</div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span>&#160; NOTIMPLEMENTED();</div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span>&#160;}</div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>&#160;</div>
<div class="line"><a name="l00132"></a><span class="lineno"><a class="line" href="../../d8/dc7/classedash__packager_1_1media_1_1UdpFile.html#a02cd760eab677a8c59af522830c7b1a4"> 132</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="../../d8/dc7/classedash__packager_1_1media_1_1UdpFile.html#a02cd760eab677a8c59af522830c7b1a4">UdpFile::Seek</a>(uint64_t position) {</div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span>&#160; NOTIMPLEMENTED();</div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span>&#160;}</div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span>&#160;</div>
<div class="line"><a name="l00137"></a><span class="lineno"><a class="line" href="../../d8/dc7/classedash__packager_1_1media_1_1UdpFile.html#a32a91da87bda023b44aa7e86c2207c07"> 137</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="../../d8/dc7/classedash__packager_1_1media_1_1UdpFile.html#a32a91da87bda023b44aa7e86c2207c07">UdpFile::Tell</a>(uint64_t* position) {</div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span>&#160; NOTIMPLEMENTED();</div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span>&#160;}</div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span>&#160;</div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span>&#160;<span class="keyword">class </span>ScopedSocket {</div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span>&#160; <span class="keyword">public</span>:</div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span>&#160; <span class="keyword">explicit</span> ScopedSocket(<span class="keywordtype">int</span> sock_fd)</div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span>&#160; : sock_fd_(sock_fd) {}</div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span>&#160;</div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span>&#160; ~ScopedSocket() {</div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span>&#160; <span class="keywordflow">if</span> (sock_fd_ != kInvalidSocket)</div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>&#160; close(sock_fd_);</div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span>&#160; }</div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span>&#160;</div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span>&#160; <span class="keywordtype">int</span> <span class="keyword">get</span>() { <span class="keywordflow">return</span> sock_fd_; }</div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span>&#160;</div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span>&#160; <span class="keywordtype">int</span> release() {</div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span>&#160; <span class="keywordtype">int</span> socket = sock_fd_;</div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span>&#160; sock_fd_ = kInvalidSocket;</div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span>&#160; <span class="keywordflow">return</span> socket;</div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span>&#160; }</div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span>&#160;</div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span>&#160; <span class="keyword">private</span>:</div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span>&#160; <span class="keywordtype">int</span> sock_fd_;</div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span>&#160;</div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span>&#160; DISALLOW_COPY_AND_ASSIGN(ScopedSocket);</div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span>&#160;};</div>
<div class="line"><a name="l00165"></a><span class="lineno"> 165</span>&#160;</div>
<div class="line"><a name="l00166"></a><span class="lineno"><a class="line" href="../../d8/dc7/classedash__packager_1_1media_1_1UdpFile.html#af759eb9caafd6220ede8c2584a706af0"> 166</a></span>&#160;<span class="keywordtype">bool</span> <a class="code" href="../../d8/dc7/classedash__packager_1_1media_1_1UdpFile.html#af759eb9caafd6220ede8c2584a706af0">UdpFile::Open</a>() {</div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span>&#160; DCHECK_EQ(kInvalidSocket, socket_);</div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span>&#160;</div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span>&#160; <span class="comment">// TODO(tinskip): Support IPv6 addresses.</span></div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span>&#160; uint32_t dest_addr;</div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span>&#160; uint16_t dest_port;</div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span>&#160; <span class="keywordflow">if</span> (!StringToIpv4AddressAndPort(<a class="code" href="../../de/d19/classedash__packager_1_1media_1_1File.html#ad736ca7bb8da1cec749f51275a87872c">file_name</a>(),</div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span>&#160; &amp;dest_addr,</div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span>&#160; &amp;dest_port)) {</div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Malformed IPv4 address:port UDP stream specifier.&quot;</span>;</div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span>&#160; }</div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span>&#160;</div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span>&#160; ScopedSocket new_socket(socket(AF_INET, SOCK_DGRAM, 0));</div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span>&#160; <span class="keywordflow">if</span> (new_socket.get() == kInvalidSocket) {</div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Could not allocate socket.&quot;</span>;</div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>&#160; }</div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span>&#160;</div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span>&#160; <span class="keyword">struct </span>sockaddr_in local_sock_addr;</div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span>&#160; bzero(&amp;local_sock_addr, <span class="keyword">sizeof</span>(local_sock_addr));</div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span>&#160; local_sock_addr.sin_family = AF_INET;</div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span>&#160; local_sock_addr.sin_port = htons(dest_port);</div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>&#160; local_sock_addr.sin_addr.s_addr = htonl(dest_addr);</div>
<div class="line"><a name="l00190"></a><span class="lineno"> 190</span>&#160; <span class="keywordflow">if</span> (bind(new_socket.get(),</div>
<div class="line"><a name="l00191"></a><span class="lineno"> 191</span>&#160; <span class="keyword">reinterpret_cast&lt;</span>struct sockaddr*<span class="keyword">&gt;</span>(&amp;local_sock_addr),</div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span>&#160; <span class="keyword">sizeof</span>(local_sock_addr))) {</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Could not bind UDP socket&quot;</span>;</div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>&#160; }</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>&#160;</div>
<div class="line"><a name="l00197"></a><span class="lineno"> 197</span>&#160; <span class="keywordflow">if</span> (IsIpv4MulticastAddress(dest_addr)) {</div>
<div class="line"><a name="l00198"></a><span class="lineno"> 198</span>&#160; uint32_t if_addr;</div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>&#160; <span class="keywordflow">if</span> (!StringToIpv4Address(FLAGS_udp_interface_address, &amp;if_addr)) {</div>
<div class="line"><a name="l00200"></a><span class="lineno"> 200</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Malformed IPv4 address for interface.&quot;</span>;</div>
<div class="line"><a name="l00201"></a><span class="lineno"> 201</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span>&#160; }</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>&#160; <span class="keyword">struct </span>ip_mreq multicast_group;</div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span>&#160; multicast_group.imr_multiaddr.s_addr = htonl(dest_addr);</div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>&#160; multicast_group.imr_interface.s_addr = htonl(if_addr);</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>&#160; <span class="keywordflow">if</span> (setsockopt(new_socket.get(),</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>&#160; IPPROTO_IP,</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>&#160; IP_ADD_MEMBERSHIP,</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span>&#160; &amp;multicast_group,</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span>&#160; <span class="keyword">sizeof</span>(multicast_group)) &lt; 0) {</div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span>&#160; LOG(ERROR) &lt;&lt; <span class="stringliteral">&quot;Failed to join multicast group.&quot;</span>;</div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span>&#160; <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>&#160; }</div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span>&#160; }</div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span>&#160;</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>&#160; socket_ = new_socket.release();</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>&#160; <span class="keywordflow">return</span> <span class="keyword">true</span>;</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>&#160;}</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>&#160;</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span>&#160;} <span class="comment">// namespace media</span></div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>&#160;} <span class="comment">// namespace edash_packager</span></div>
<div class="ttc" id="classedash__packager_1_1media_1_1UdpFile_html_ad52585a56c199c3f5887d5dd77be9142"><div class="ttname"><a href="../../d8/dc7/classedash__packager_1_1media_1_1UdpFile.html#ad52585a56c199c3f5887d5dd77be9142">edash_packager::media::UdpFile::UdpFile</a></div><div class="ttdeci">UdpFile(const char *address_and_port)</div><div class="ttdef"><b>Definition:</b> <a href="../../dc/ddf/udp__file__posix_8cc_source.html#l00084">udp_file_posix.cc:84</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1UdpFile_html_a32a91da87bda023b44aa7e86c2207c07"><div class="ttname"><a href="../../d8/dc7/classedash__packager_1_1media_1_1UdpFile.html#a32a91da87bda023b44aa7e86c2207c07">edash_packager::media::UdpFile::Tell</a></div><div class="ttdeci">bool Tell(uint64_t *position) override</div><div class="ttdef"><b>Definition:</b> <a href="../../dc/ddf/udp__file__posix_8cc_source.html#l00137">udp_file_posix.cc:137</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1UdpFile_html_a02cd760eab677a8c59af522830c7b1a4"><div class="ttname"><a href="../../d8/dc7/classedash__packager_1_1media_1_1UdpFile.html#a02cd760eab677a8c59af522830c7b1a4">edash_packager::media::UdpFile::Seek</a></div><div class="ttdeci">bool Seek(uint64_t position) override</div><div class="ttdef"><b>Definition:</b> <a href="../../dc/ddf/udp__file__posix_8cc_source.html#l00132">udp_file_posix.cc:132</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1UdpFile_html_a8d62376715aee117aa7a225b54be0945"><div class="ttname"><a href="../../d8/dc7/classedash__packager_1_1media_1_1UdpFile.html#a8d62376715aee117aa7a225b54be0945">edash_packager::media::UdpFile::Size</a></div><div class="ttdeci">int64_t Size() override</div><div class="ttdef"><b>Definition:</b> <a href="../../dc/ddf/udp__file__posix_8cc_source.html#l00120">udp_file_posix.cc:120</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1UdpFile_html_adc71ee86f3926b7869e088f1f0bae0a4"><div class="ttname"><a href="../../d8/dc7/classedash__packager_1_1media_1_1UdpFile.html#adc71ee86f3926b7869e088f1f0bae0a4">edash_packager::media::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="../../dc/ddf/udp__file__posix_8cc_source.html#l00115">udp_file_posix.cc:115</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1File_html"><div class="ttname"><a href="../../de/d19/classedash__packager_1_1media_1_1File.html">edash_packager::media::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#l00024">file.h:24</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1UdpFile_html_a10c51a75395ecb97f89124e296a349d9"><div class="ttname"><a href="../../d8/dc7/classedash__packager_1_1media_1_1UdpFile.html#a10c51a75395ecb97f89124e296a349d9">edash_packager::media::UdpFile::Close</a></div><div class="ttdeci">bool Close() override</div><div class="ttdef"><b>Definition:</b> <a href="../../dc/ddf/udp__file__posix_8cc_source.html#l00090">udp_file_posix.cc:90</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1File_html_ad736ca7bb8da1cec749f51275a87872c"><div class="ttname"><a href="../../de/d19/classedash__packager_1_1media_1_1File.html#ad736ca7bb8da1cec749f51275a87872c">edash_packager::media::File::file_name</a></div><div class="ttdeci">const std::string &amp; file_name() const </div><div class="ttdef"><b>Definition:</b> <a href="../../d2/d4d/file_8h_source.html#l00091">file.h:91</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1UdpFile_html_acde300494ef44cdbefac7dbf27b6707f"><div class="ttname"><a href="../../d8/dc7/classedash__packager_1_1media_1_1UdpFile.html#acde300494ef44cdbefac7dbf27b6707f">edash_packager::media::UdpFile::Flush</a></div><div class="ttdeci">bool Flush() override</div><div class="ttdef"><b>Definition:</b> <a href="../../dc/ddf/udp__file__posix_8cc_source.html#l00127">udp_file_posix.cc:127</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1UdpFile_html_aefea0adecf58c67cfde19e095ef027c3"><div class="ttname"><a href="../../d8/dc7/classedash__packager_1_1media_1_1UdpFile.html#aefea0adecf58c67cfde19e095ef027c3">edash_packager::media::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="../../dc/ddf/udp__file__posix_8cc_source.html#l00099">udp_file_posix.cc:99</a></div></div>
<div class="ttc" id="classedash__packager_1_1media_1_1UdpFile_html_af759eb9caafd6220ede8c2584a706af0"><div class="ttname"><a href="../../d8/dc7/classedash__packager_1_1media_1_1UdpFile.html#af759eb9caafd6220ede8c2584a706af0">edash_packager::media::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="../../dc/ddf/udp__file__posix_8cc_source.html#l00166">udp_file_posix.cc:166</a></div></div>
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