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<div class="title">dns.c</div> </div>
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<a href="dns_8c.html">Go to the documentation of this file.</a><div class="fragment"><div class="line"><a name="l00001"></a><span class="lineno"> 1</span>  </div>
<div class="line"><a name="l00037"></a><span class="lineno"> 37</span> <span class="comment">/*</span></div>
<div class="line"><a name="l00038"></a><span class="lineno"> 38</span> <span class="comment"> * Port to lwIP from uIP</span></div>
<div class="line"><a name="l00039"></a><span class="lineno"> 39</span> <span class="comment"> * by Jim Pettinato April 2007</span></div>
<div class="line"><a name="l00040"></a><span class="lineno"> 40</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00041"></a><span class="lineno"> 41</span> <span class="comment"> * security fixes and more by Simon Goldschmidt</span></div>
<div class="line"><a name="l00042"></a><span class="lineno"> 42</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00043"></a><span class="lineno"> 43</span> <span class="comment"> * uIP version Copyright (c) 2002-2003, Adam Dunkels.</span></div>
<div class="line"><a name="l00044"></a><span class="lineno"> 44</span> <span class="comment"> * All rights reserved.</span></div>
<div class="line"><a name="l00045"></a><span class="lineno"> 45</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00046"></a><span class="lineno"> 46</span> <span class="comment"> * Redistribution and use in source and binary forms, with or without</span></div>
<div class="line"><a name="l00047"></a><span class="lineno"> 47</span> <span class="comment"> * modification, are permitted provided that the following conditions</span></div>
<div class="line"><a name="l00048"></a><span class="lineno"> 48</span> <span class="comment"> * are met:</span></div>
<div class="line"><a name="l00049"></a><span class="lineno"> 49</span> <span class="comment"> * 1. Redistributions of source code must retain the above copyright</span></div>
<div class="line"><a name="l00050"></a><span class="lineno"> 50</span> <span class="comment"> * notice, this list of conditions and the following disclaimer.</span></div>
<div class="line"><a name="l00051"></a><span class="lineno"> 51</span> <span class="comment"> * 2. Redistributions in binary form must reproduce the above copyright</span></div>
<div class="line"><a name="l00052"></a><span class="lineno"> 52</span> <span class="comment"> * notice, this list of conditions and the following disclaimer in the</span></div>
<div class="line"><a name="l00053"></a><span class="lineno"> 53</span> <span class="comment"> * documentation and/or other materials provided with the distribution.</span></div>
<div class="line"><a name="l00054"></a><span class="lineno"> 54</span> <span class="comment"> * 3. The name of the author may not be used to endorse or promote</span></div>
<div class="line"><a name="l00055"></a><span class="lineno"> 55</span> <span class="comment"> * products derived from this software without specific prior</span></div>
<div class="line"><a name="l00056"></a><span class="lineno"> 56</span> <span class="comment"> * written permission.</span></div>
<div class="line"><a name="l00057"></a><span class="lineno"> 57</span> <span class="comment"> *</span></div>
<div class="line"><a name="l00058"></a><span class="lineno"> 58</span> <span class="comment"> * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS</span></div>
<div class="line"><a name="l00059"></a><span class="lineno"> 59</span> <span class="comment"> * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED</span></div>
<div class="line"><a name="l00060"></a><span class="lineno"> 60</span> <span class="comment"> * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE</span></div>
<div class="line"><a name="l00061"></a><span class="lineno"> 61</span> <span class="comment"> * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY</span></div>
<div class="line"><a name="l00062"></a><span class="lineno"> 62</span> <span class="comment"> * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL</span></div>
<div class="line"><a name="l00063"></a><span class="lineno"> 63</span> <span class="comment"> * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE</span></div>
<div class="line"><a name="l00064"></a><span class="lineno"> 64</span> <span class="comment"> * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS</span></div>
<div class="line"><a name="l00065"></a><span class="lineno"> 65</span> <span class="comment"> * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,</span></div>
<div class="line"><a name="l00066"></a><span class="lineno"> 66</span> <span class="comment"> * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING</span></div>
<div class="line"><a name="l00067"></a><span class="lineno"> 67</span> <span class="comment"> * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS</span></div>
<div class="line"><a name="l00068"></a><span class="lineno"> 68</span> <span class="comment"> * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.</span></div>
<div class="line"><a name="l00069"></a><span class="lineno"> 69</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00070"></a><span class="lineno"> 70</span>  </div>
<div class="line"><a name="l00071"></a><span class="lineno"> 71</span> <span class="comment">/*-----------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00072"></a><span class="lineno"> 72</span> <span class="comment"> * RFC 1035 - Domain names - implementation and specification</span></div>
<div class="line"><a name="l00073"></a><span class="lineno"> 73</span> <span class="comment"> * RFC 2181 - Clarifications to the DNS Specification</span></div>
<div class="line"><a name="l00074"></a><span class="lineno"> 74</span> <span class="comment"> *----------------------------------------------------------------------------*/</span></div>
<div class="line"><a name="l00075"></a><span class="lineno"> 75</span>  </div>
<div class="line"><a name="l00081"></a><span class="lineno"> 81</span> <span class="comment">/*-----------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00082"></a><span class="lineno"> 82</span> <span class="comment"> * Includes</span></div>
<div class="line"><a name="l00083"></a><span class="lineno"> 83</span> <span class="comment"> *----------------------------------------------------------------------------*/</span></div>
<div class="line"><a name="l00084"></a><span class="lineno"> 84</span>  </div>
<div class="line"><a name="l00085"></a><span class="lineno"> 85</span> <span class="preprocessor">#include "<a class="code" href="opt_8h.html">net/opt.h</a>"</span></div>
<div class="line"><a name="l00086"></a><span class="lineno"> 86</span>  </div>
<div class="line"><a name="l00087"></a><span class="lineno"> 87</span> <span class="preprocessor">#if LWIP_DNS </span><span class="comment">/* don't build if not configured for use in lwipopts.h */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00088"></a><span class="lineno"> 88</span>  </div>
<div class="line"><a name="l00089"></a><span class="lineno"> 89</span> <span class="preprocessor">#include "<a class="code" href="def_8h.html">net/def.h</a>"</span></div>
<div class="line"><a name="l00090"></a><span class="lineno"> 90</span> <span class="preprocessor">#include "<a class="code" href="udp_8h.html">net/udp.h</a>"</span></div>
<div class="line"><a name="l00091"></a><span class="lineno"> 91</span> <span class="preprocessor">#include "<a class="code" href="mem_8h.html">net/mem.h</a>"</span></div>
<div class="line"><a name="l00092"></a><span class="lineno"> 92</span> <span class="preprocessor">#include "<a class="code" href="memp_8h.html">net/memp.h</a>"</span></div>
<div class="line"><a name="l00093"></a><span class="lineno"> 93</span> <span class="preprocessor">#include "<a class="code" href="dns_8h.html">net/dns.h</a>"</span></div>
<div class="line"><a name="l00094"></a><span class="lineno"> 94</span> <span class="preprocessor">#include "<a class="code" href="prot_2dns_8h.html">net/prot/dns.h</a>"</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"> 96</span> <span class="preprocessor">#include <<a class="code" href="string_8h.html">string.h</a>></span></div>
<div class="line"><a name="l00097"></a><span class="lineno"> 97</span>  </div>
<div class="line"><a name="l00099"></a><span class="lineno"> 99</span> <span class="preprocessor">#ifndef DNS_RAND_TXID</span></div>
<div class="line"><a name="l00100"></a><span class="lineno"> 100</span> <span class="preprocessor">#if ((LWIP_DNS_SECURE & LWIP_DNS_SECURE_RAND_XID) != 0)</span></div>
<div class="line"><a name="l00101"></a><span class="lineno"> 101</span> <span class="preprocessor">#define DNS_RAND_TXID LWIP_RAND</span></div>
<div class="line"><a name="l00102"></a><span class="lineno"> 102</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00103"></a><span class="lineno"> 103</span> <span class="keyword">static</span> <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> dns_txid;</div>
<div class="line"><a name="l00104"></a><span class="lineno"> 104</span> <span class="preprocessor">#define DNS_RAND_TXID() (++dns_txid)</span></div>
<div class="line"><a name="l00105"></a><span class="lineno"> 105</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00106"></a><span class="lineno"> 106</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00107"></a><span class="lineno"> 107</span>  </div>
<div class="line"><a name="l00109"></a><span class="lineno"> 109</span> <span class="preprocessor">#ifndef DNS_PORT_ALLOWED</span></div>
<div class="line"><a name="l00110"></a><span class="lineno"> 110</span> <span class="preprocessor">#define DNS_PORT_ALLOWED(port) ((port) >= 1024)</span></div>
<div class="line"><a name="l00111"></a><span class="lineno"> 111</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00112"></a><span class="lineno"> 112</span>  </div>
<div class="line"><a name="l00114"></a><span class="lineno"> 114</span> <span class="preprocessor">#ifndef DNS_MAX_RETRIES</span></div>
<div class="line"><a name="l00115"></a><span class="lineno"> 115</span> <span class="preprocessor">#define DNS_MAX_RETRIES 4</span></div>
<div class="line"><a name="l00116"></a><span class="lineno"> 116</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00117"></a><span class="lineno"> 117</span>  </div>
<div class="line"><a name="l00119"></a><span class="lineno"> 119</span> <span class="preprocessor">#ifndef DNS_MAX_TTL</span></div>
<div class="line"><a name="l00120"></a><span class="lineno"> 120</span> <span class="preprocessor">#define DNS_MAX_TTL 604800</span></div>
<div class="line"><a name="l00121"></a><span class="lineno"> 121</span> <span class="preprocessor">#elif DNS_MAX_TTL > 0x7FFFFFFF</span></div>
<div class="line"><a name="l00122"></a><span class="lineno"> 122</span> <span class="preprocessor">#error DNS_MAX_TTL must be a positive 32-bit value</span></div>
<div class="line"><a name="l00123"></a><span class="lineno"> 123</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00124"></a><span class="lineno"> 124</span>  </div>
<div class="line"><a name="l00125"></a><span class="lineno"> 125</span> <span class="preprocessor">#if DNS_TABLE_SIZE > 255</span></div>
<div class="line"><a name="l00126"></a><span class="lineno"> 126</span> <span class="preprocessor">#error DNS_TABLE_SIZE must fit into an u8_t</span></div>
<div class="line"><a name="l00127"></a><span class="lineno"> 127</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00128"></a><span class="lineno"> 128</span> <span class="preprocessor">#if DNS_MAX_SERVERS > 255</span></div>
<div class="line"><a name="l00129"></a><span class="lineno"> 129</span> <span class="preprocessor">#error DNS_MAX_SERVERS must fit into an u8_t</span></div>
<div class="line"><a name="l00130"></a><span class="lineno"> 130</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00131"></a><span class="lineno"> 131</span>  </div>
<div class="line"><a name="l00132"></a><span class="lineno"> 132</span> <span class="comment">/* The number of parallel requests (i.e. calls to dns_gethostbyname</span></div>
<div class="line"><a name="l00133"></a><span class="lineno"> 133</span> <span class="comment"> * that cannot be answered from the DNS table.</span></div>
<div class="line"><a name="l00134"></a><span class="lineno"> 134</span> <span class="comment"> * This is set to the table size by default.</span></div>
<div class="line"><a name="l00135"></a><span class="lineno"> 135</span> <span class="comment"> */</span></div>
<div class="line"><a name="l00136"></a><span class="lineno"> 136</span> <span class="preprocessor">#if ((LWIP_DNS_SECURE & LWIP_DNS_SECURE_NO_MULTIPLE_OUTSTANDING) != 0)</span></div>
<div class="line"><a name="l00137"></a><span class="lineno"> 137</span> <span class="preprocessor">#ifndef DNS_MAX_REQUESTS</span></div>
<div class="line"><a name="l00138"></a><span class="lineno"> 138</span> <span class="preprocessor">#define DNS_MAX_REQUESTS DNS_TABLE_SIZE</span></div>
<div class="line"><a name="l00139"></a><span class="lineno"> 139</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00140"></a><span class="lineno"> 140</span> <span class="preprocessor">#if DNS_MAX_REQUESTS > 255</span></div>
<div class="line"><a name="l00141"></a><span class="lineno"> 141</span> <span class="preprocessor">#error DNS_MAX_REQUESTS must fit into an u8_t</span></div>
<div class="line"><a name="l00142"></a><span class="lineno"> 142</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00143"></a><span class="lineno"> 143</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00144"></a><span class="lineno"> 144</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00145"></a><span class="lineno"> 145</span> <span class="comment">/* In this configuration, both arrays have to have the same size and are used</span></div>
<div class="line"><a name="l00146"></a><span class="lineno"> 146</span> <span class="comment"> * like one entry (used/free) */</span></div>
<div class="line"><a name="l00147"></a><span class="lineno"> 147</span> <span class="preprocessor">#define DNS_MAX_REQUESTS DNS_TABLE_SIZE</span></div>
<div class="line"><a name="l00148"></a><span class="lineno"> 148</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00149"></a><span class="lineno"> 149</span>  </div>
<div class="line"><a name="l00150"></a><span class="lineno"> 150</span> <span class="comment">/* The number of UDP source ports used in parallel */</span></div>
<div class="line"><a name="l00151"></a><span class="lineno"> 151</span> <span class="preprocessor">#if ((LWIP_DNS_SECURE & LWIP_DNS_SECURE_RAND_SRC_PORT) != 0)</span></div>
<div class="line"><a name="l00152"></a><span class="lineno"> 152</span> <span class="preprocessor">#ifndef DNS_MAX_SOURCE_PORTS</span></div>
<div class="line"><a name="l00153"></a><span class="lineno"> 153</span> <span class="preprocessor">#define DNS_MAX_SOURCE_PORTS DNS_MAX_REQUESTS</span></div>
<div class="line"><a name="l00154"></a><span class="lineno"> 154</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00155"></a><span class="lineno"> 155</span> <span class="preprocessor">#if DNS_MAX_SOURCE_PORTS > 255</span></div>
<div class="line"><a name="l00156"></a><span class="lineno"> 156</span> <span class="preprocessor">#error DNS_MAX_SOURCE_PORTS must fit into an u8_t</span></div>
<div class="line"><a name="l00157"></a><span class="lineno"> 157</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00158"></a><span class="lineno"> 158</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00159"></a><span class="lineno"> 159</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00160"></a><span class="lineno"> 160</span> <span class="preprocessor">#ifdef DNS_MAX_SOURCE_PORTS</span></div>
<div class="line"><a name="l00161"></a><span class="lineno"> 161</span> <span class="preprocessor">#undef DNS_MAX_SOURCE_PORTS</span></div>
<div class="line"><a name="l00162"></a><span class="lineno"> 162</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00163"></a><span class="lineno"> 163</span> <span class="preprocessor">#define DNS_MAX_SOURCE_PORTS 1</span></div>
<div class="line"><a name="l00164"></a><span class="lineno"> 164</span> <span class="preprocessor">#endif</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> <span class="preprocessor">#if LWIP_IPV4 && LWIP_IPV6</span></div>
<div class="line"><a name="l00167"></a><span class="lineno"> 167</span> <span class="preprocessor">#define LWIP_DNS_ADDRTYPE_IS_IPV6(t) (((t) == LWIP_DNS_ADDRTYPE_IPV6_IPV4) || ((t) == LWIP_DNS_ADDRTYPE_IPV6))</span></div>
<div class="line"><a name="l00168"></a><span class="lineno"> 168</span> <span class="preprocessor">#define LWIP_DNS_ADDRTYPE_MATCH_IP(t, ip) (IP_IS_V6_VAL(ip) ? LWIP_DNS_ADDRTYPE_IS_IPV6(t) : (!LWIP_DNS_ADDRTYPE_IS_IPV6(t)))</span></div>
<div class="line"><a name="l00169"></a><span class="lineno"> 169</span> <span class="preprocessor">#define LWIP_DNS_ADDRTYPE_ARG(x) , x</span></div>
<div class="line"><a name="l00170"></a><span class="lineno"> 170</span> <span class="preprocessor">#define LWIP_DNS_ADDRTYPE_ARG_OR_ZERO(x) x</span></div>
<div class="line"><a name="l00171"></a><span class="lineno"> 171</span> <span class="preprocessor">#define LWIP_DNS_SET_ADDRTYPE(x, y) do { x = y; } while(0)</span></div>
<div class="line"><a name="l00172"></a><span class="lineno"> 172</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00173"></a><span class="lineno"> 173</span> <span class="preprocessor">#if LWIP_IPV6</span></div>
<div class="line"><a name="l00174"></a><span class="lineno"> 174</span> <span class="preprocessor">#define LWIP_DNS_ADDRTYPE_IS_IPV6(t) 1</span></div>
<div class="line"><a name="l00175"></a><span class="lineno"> 175</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00176"></a><span class="lineno"> 176</span> <span class="preprocessor">#define LWIP_DNS_ADDRTYPE_IS_IPV6(t) 0</span></div>
<div class="line"><a name="l00177"></a><span class="lineno"> 177</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00178"></a><span class="lineno"> 178</span> <span class="preprocessor">#define LWIP_DNS_ADDRTYPE_MATCH_IP(t, ip) 1</span></div>
<div class="line"><a name="l00179"></a><span class="lineno"> 179</span> <span class="preprocessor">#define LWIP_DNS_ADDRTYPE_ARG(x)</span></div>
<div class="line"><a name="l00180"></a><span class="lineno"> 180</span> <span class="preprocessor">#define LWIP_DNS_ADDRTYPE_ARG_OR_ZERO(x) 0</span></div>
<div class="line"><a name="l00181"></a><span class="lineno"> 181</span> <span class="preprocessor">#define LWIP_DNS_SET_ADDRTYPE(x, y)</span></div>
<div class="line"><a name="l00182"></a><span class="lineno"> 182</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV4 && LWIP_IPV6 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00183"></a><span class="lineno"> 183</span>  </div>
<div class="line"><a name="l00184"></a><span class="lineno"> 184</span> <span class="preprocessor">#if LWIP_DNS_SUPPORT_MDNS_QUERIES</span></div>
<div class="line"><a name="l00185"></a><span class="lineno"> 185</span> <span class="preprocessor">#define LWIP_DNS_ISMDNS_ARG(x) , x</span></div>
<div class="line"><a name="l00186"></a><span class="lineno"> 186</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00187"></a><span class="lineno"> 187</span> <span class="preprocessor">#define LWIP_DNS_ISMDNS_ARG(x)</span></div>
<div class="line"><a name="l00188"></a><span class="lineno"> 188</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00189"></a><span class="lineno"> 189</span>  </div>
<div class="line"><a name="l00192"></a><span class="lineno"> 192</span> <span class="keyword">struct </span>dns_query {</div>
<div class="line"><a name="l00193"></a><span class="lineno"> 193</span>  <span class="comment">/* DNS query record starts with either a domain name or a pointer</span></div>
<div class="line"><a name="l00194"></a><span class="lineno"> 194</span> <span class="comment"> to a name already present somewhere in the packet. */</span></div>
<div class="line"><a name="l00195"></a><span class="lineno"> 195</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> type;</div>
<div class="line"><a name="l00196"></a><span class="lineno"> 196</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> cls;</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> <span class="preprocessor">#define SIZEOF_DNS_QUERY 4</span></div>
<div class="line"><a name="l00199"></a><span class="lineno"> 199</span>  </div>
<div class="line"><a name="l00202"></a><span class="lineno"> 202</span> <span class="keyword">struct </span>dns_answer {</div>
<div class="line"><a name="l00203"></a><span class="lineno"> 203</span>  <span class="comment">/* DNS answer record starts with either a domain name or a pointer</span></div>
<div class="line"><a name="l00204"></a><span class="lineno"> 204</span> <span class="comment"> to a name already present somewhere in the packet. */</span></div>
<div class="line"><a name="l00205"></a><span class="lineno"> 205</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> type;</div>
<div class="line"><a name="l00206"></a><span class="lineno"> 206</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> cls;</div>
<div class="line"><a name="l00207"></a><span class="lineno"> 207</span>  <a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a> ttl;</div>
<div class="line"><a name="l00208"></a><span class="lineno"> 208</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> len;</div>
<div class="line"><a name="l00209"></a><span class="lineno"> 209</span> };</div>
<div class="line"><a name="l00210"></a><span class="lineno"> 210</span> <span class="preprocessor">#define SIZEOF_DNS_ANSWER 10</span></div>
<div class="line"><a name="l00211"></a><span class="lineno"> 211</span> <span class="comment">/* maximum allowed size for the struct due to non-packed */</span></div>
<div class="line"><a name="l00212"></a><span class="lineno"> 212</span> <span class="preprocessor">#define SIZEOF_DNS_ANSWER_ASSERT 12</span></div>
<div class="line"><a name="l00213"></a><span class="lineno"> 213</span>  </div>
<div class="line"><a name="l00214"></a><span class="lineno"> 214</span> <span class="comment">/* DNS table entry states */</span></div>
<div class="line"><a name="l00215"></a><span class="lineno"> 215</span> <span class="keyword">typedef</span> <span class="keyword">enum</span> {</div>
<div class="line"><a name="l00216"></a><span class="lineno"> 216</span>  DNS_STATE_UNUSED = 0,</div>
<div class="line"><a name="l00217"></a><span class="lineno"> 217</span>  DNS_STATE_NEW = 1,</div>
<div class="line"><a name="l00218"></a><span class="lineno"> 218</span>  DNS_STATE_ASKING = 2,</div>
<div class="line"><a name="l00219"></a><span class="lineno"> 219</span>  DNS_STATE_DONE = 3</div>
<div class="line"><a name="l00220"></a><span class="lineno"> 220</span> } dns_state_enum_t;</div>
<div class="line"><a name="l00221"></a><span class="lineno"> 221</span>  </div>
<div class="line"><a name="l00223"></a><span class="lineno"> 223</span> <span class="keyword">struct </span>dns_table_entry {</div>
<div class="line"><a name="l00224"></a><span class="lineno"> 224</span>  <a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a> ttl;</div>
<div class="line"><a name="l00225"></a><span class="lineno"> 225</span>  <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> ipaddr;</div>
<div class="line"><a name="l00226"></a><span class="lineno"> 226</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> txid;</div>
<div class="line"><a name="l00227"></a><span class="lineno"> 227</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> state;</div>
<div class="line"><a name="l00228"></a><span class="lineno"> 228</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> server_idx;</div>
<div class="line"><a name="l00229"></a><span class="lineno"> 229</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> tmr;</div>
<div class="line"><a name="l00230"></a><span class="lineno"> 230</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> retries;</div>
<div class="line"><a name="l00231"></a><span class="lineno"> 231</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> seqno;</div>
<div class="line"><a name="l00232"></a><span class="lineno"> 232</span> <span class="preprocessor">#if ((LWIP_DNS_SECURE & LWIP_DNS_SECURE_RAND_SRC_PORT) != 0)</span></div>
<div class="line"><a name="l00233"></a><span class="lineno"> 233</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> pcb_idx;</div>
<div class="line"><a name="l00234"></a><span class="lineno"> 234</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00235"></a><span class="lineno"> 235</span>  <span class="keywordtype">char</span> <a class="code" href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>[<a class="code" href="lwipopts_8h.html#a3b01c79902063c170ef57deb72f56124">DNS_MAX_NAME_LENGTH</a>];</div>
<div class="line"><a name="l00236"></a><span class="lineno"> 236</span> <span class="preprocessor">#if LWIP_IPV4 && LWIP_IPV6</span></div>
<div class="line"><a name="l00237"></a><span class="lineno"> 237</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> reqaddrtype;</div>
<div class="line"><a name="l00238"></a><span class="lineno"> 238</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV4 && LWIP_IPV6 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00239"></a><span class="lineno"> 239</span> <span class="preprocessor">#if LWIP_DNS_SUPPORT_MDNS_QUERIES</span></div>
<div class="line"><a name="l00240"></a><span class="lineno"> 240</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> is_mdns;</div>
<div class="line"><a name="l00241"></a><span class="lineno"> 241</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00242"></a><span class="lineno"> 242</span> };</div>
<div class="line"><a name="l00243"></a><span class="lineno"> 243</span>  </div>
<div class="line"><a name="l00246"></a><span class="lineno"> 246</span> <span class="keyword">struct </span>dns_req_entry {</div>
<div class="line"><a name="l00247"></a><span class="lineno"> 247</span>  <span class="comment">/* pointer to callback on DNS query done */</span></div>
<div class="line"><a name="l00248"></a><span class="lineno"> 248</span>  dns_found_callback found;</div>
<div class="line"><a name="l00249"></a><span class="lineno"> 249</span>  <span class="comment">/* argument passed to the callback function */</span></div>
<div class="line"><a name="l00250"></a><span class="lineno"> 250</span>  <span class="keywordtype">void</span> *arg;</div>
<div class="line"><a name="l00251"></a><span class="lineno"> 251</span> <span class="preprocessor">#if ((LWIP_DNS_SECURE & LWIP_DNS_SECURE_NO_MULTIPLE_OUTSTANDING) != 0)</span></div>
<div class="line"><a name="l00252"></a><span class="lineno"> 252</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> dns_table_idx;</div>
<div class="line"><a name="l00253"></a><span class="lineno"> 253</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00254"></a><span class="lineno"> 254</span> <span class="preprocessor">#if LWIP_IPV4 && LWIP_IPV6</span></div>
<div class="line"><a name="l00255"></a><span class="lineno"> 255</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> reqaddrtype;</div>
<div class="line"><a name="l00256"></a><span class="lineno"> 256</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV4 && LWIP_IPV6 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00257"></a><span class="lineno"> 257</span> };</div>
<div class="line"><a name="l00258"></a><span class="lineno"> 258</span>  </div>
<div class="line"><a name="l00259"></a><span class="lineno"> 259</span> <span class="preprocessor">#if DNS_LOCAL_HOSTLIST</span></div>
<div class="line"><a name="l00260"></a><span class="lineno"> 260</span>  </div>
<div class="line"><a name="l00261"></a><span class="lineno"> 261</span> <span class="preprocessor">#if DNS_LOCAL_HOSTLIST_IS_DYNAMIC</span></div>
<div class="line"><a name="l00262"></a><span class="lineno"> 262</span>  </div>
<div class="line"><a name="l00264"></a><span class="lineno"> 264</span> <span class="keyword">static</span> <span class="keyword">struct </span>local_hostlist_entry *local_hostlist_dynamic;</div>
<div class="line"><a name="l00265"></a><span class="lineno"> 265</span> <span class="preprocessor">#else </span><span class="comment">/* DNS_LOCAL_HOSTLIST_IS_DYNAMIC */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00266"></a><span class="lineno"> 266</span>  </div>
<div class="line"><a name="l00269"></a><span class="lineno"> 269</span> <span class="preprocessor">#ifndef DNS_LOCAL_HOSTLIST_STORAGE_PRE</span></div>
<div class="line"><a name="l00270"></a><span class="lineno"> 270</span> <span class="preprocessor">#define DNS_LOCAL_HOSTLIST_STORAGE_PRE static</span></div>
<div class="line"><a name="l00271"></a><span class="lineno"> 271</span> <span class="preprocessor">#endif </span><span class="comment">/* DNS_LOCAL_HOSTLIST_STORAGE_PRE */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00272"></a><span class="lineno"> 272</span>  </div>
<div class="line"><a name="l00274"></a><span class="lineno"> 274</span> <span class="preprocessor">#ifndef DNS_LOCAL_HOSTLIST_STORAGE_POST</span></div>
<div class="line"><a name="l00275"></a><span class="lineno"> 275</span> <span class="preprocessor">#define DNS_LOCAL_HOSTLIST_STORAGE_POST</span></div>
<div class="line"><a name="l00276"></a><span class="lineno"> 276</span> <span class="preprocessor">#endif </span><span class="comment">/* DNS_LOCAL_HOSTLIST_STORAGE_POST */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00277"></a><span class="lineno"> 277</span> DNS_LOCAL_HOSTLIST_STORAGE_PRE <span class="keyword">struct </span>local_hostlist_entry local_hostlist_static[]</div>
<div class="line"><a name="l00278"></a><span class="lineno"> 278</span>  DNS_LOCAL_HOSTLIST_STORAGE_POST = DNS_LOCAL_HOSTLIST_INIT;</div>
<div class="line"><a name="l00279"></a><span class="lineno"> 279</span>  </div>
<div class="line"><a name="l00280"></a><span class="lineno"> 280</span> <span class="preprocessor">#endif </span><span class="comment">/* DNS_LOCAL_HOSTLIST_IS_DYNAMIC */</span><span class="preprocessor"></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> <span class="keyword">static</span> <span class="keywordtype">void</span> dns_init_local(<span class="keywordtype">void</span>);</div>
<div class="line"><a name="l00283"></a><span class="lineno"> 283</span> <span class="keyword">static</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> dns_lookup_local(<span class="keyword">const</span> <span class="keywordtype">char</span> *hostname, <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> *addr LWIP_DNS_ADDRTYPE_ARG(<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> dns_addrtype));</div>
<div class="line"><a name="l00284"></a><span class="lineno"> 284</span> <span class="preprocessor">#endif </span><span class="comment">/* DNS_LOCAL_HOSTLIST */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00285"></a><span class="lineno"> 285</span>  </div>
<div class="line"><a name="l00286"></a><span class="lineno"> 286</span>  </div>
<div class="line"><a name="l00287"></a><span class="lineno"> 287</span> <span class="comment">/* forward declarations */</span></div>
<div class="line"><a name="l00288"></a><span class="lineno"> 288</span> <span class="keyword">static</span> <span class="keywordtype">void</span> dns_recv(<span class="keywordtype">void</span> *s, <span class="keyword">struct</span> udp_pcb *pcb, <span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p, <span class="keyword">const</span> <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> *addr, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> port);</div>
<div class="line"><a name="l00289"></a><span class="lineno"> 289</span> <span class="keyword">static</span> <span class="keywordtype">void</span> dns_check_entries(<span class="keywordtype">void</span>);</div>
<div class="line"><a name="l00290"></a><span class="lineno"> 290</span> <span class="keyword">static</span> <span class="keywordtype">void</span> dns_call_found(<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> idx, <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a>* addr);</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> <span class="comment">/*-----------------------------------------------------------------------------</span></div>
<div class="line"><a name="l00293"></a><span class="lineno"> 293</span> <span class="comment"> * Globals</span></div>
<div class="line"><a name="l00294"></a><span class="lineno"> 294</span> <span class="comment"> *----------------------------------------------------------------------------*/</span></div>
<div class="line"><a name="l00295"></a><span class="lineno"> 295</span>  </div>
<div class="line"><a name="l00296"></a><span class="lineno"> 296</span> <span class="comment">/* DNS variables */</span></div>
<div class="line"><a name="l00297"></a><span class="lineno"> 297</span> <span class="keyword">static</span> <span class="keyword">struct </span>udp_pcb *dns_pcbs[DNS_MAX_SOURCE_PORTS];</div>
<div class="line"><a name="l00298"></a><span class="lineno"> 298</span> <span class="preprocessor">#if ((LWIP_DNS_SECURE & LWIP_DNS_SECURE_RAND_SRC_PORT) != 0)</span></div>
<div class="line"><a name="l00299"></a><span class="lineno"> 299</span> <span class="keyword">static</span> <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> dns_last_pcb_idx;</div>
<div class="line"><a name="l00300"></a><span class="lineno"> 300</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00301"></a><span class="lineno"> 301</span> <span class="keyword">static</span> <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> dns_seqno;</div>
<div class="line"><a name="l00302"></a><span class="lineno"> 302</span> <span class="keyword">static</span> <span class="keyword">struct </span>dns_table_entry dns_table[<a class="code" href="lwipopts_8h.html#a2384e76c1acdf969d883f3de08d340f7">DNS_TABLE_SIZE</a>];</div>
<div class="line"><a name="l00303"></a><span class="lineno"> 303</span> <span class="keyword">static</span> <span class="keyword">struct </span>dns_req_entry dns_requests[DNS_MAX_REQUESTS];</div>
<div class="line"><a name="l00304"></a><span class="lineno"> 304</span> <span class="keyword">static</span> <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> dns_servers[<a class="code" href="lwipopts_8h.html#a9f9881c887a8aceb9765820c2dbdf292">DNS_MAX_SERVERS</a>];</div>
<div class="line"><a name="l00305"></a><span class="lineno"> 305</span>  </div>
<div class="line"><a name="l00306"></a><span class="lineno"> 306</span> <span class="preprocessor">#if LWIP_IPV4</span></div>
<div class="line"><a name="l00307"></a><span class="lineno"> 307</span> <span class="keyword">const</span> <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> dns_mquery_v4group = <a class="code" href="prot_2dns_8h.html#a861fa0ab623ace9086f5c7247a9f04c8">DNS_MQUERY_IPV4_GROUP_INIT</a>;</div>
<div class="line"><a name="l00308"></a><span class="lineno"> 308</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV4 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00309"></a><span class="lineno"> 309</span> <span class="preprocessor">#if LWIP_IPV6</span></div>
<div class="line"><a name="l00310"></a><span class="lineno"> 310</span> <span class="keyword">const</span> <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> dns_mquery_v6group = <a class="code" href="prot_2dns_8h.html#ae8c419a73ada8ec6b470b3679ae87b8e">DNS_MQUERY_IPV6_GROUP_INIT</a>;</div>
<div class="line"><a name="l00311"></a><span class="lineno"> 311</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV6 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00312"></a><span class="lineno"> 312</span>  </div>
<div class="line"><a name="l00317"></a><span class="lineno"> 317</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00318"></a><span class="lineno"> 318</span> dns_init(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l00319"></a><span class="lineno"> 319</span> {</div>
<div class="line"><a name="l00320"></a><span class="lineno"> 320</span> <span class="preprocessor">#ifdef DNS_SERVER_ADDRESS</span></div>
<div class="line"><a name="l00321"></a><span class="lineno"> 321</span>  <span class="comment">/* initialize default DNS server address */</span></div>
<div class="line"><a name="l00322"></a><span class="lineno"> 322</span>  <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> dnsserver;</div>
<div class="line"><a name="l00323"></a><span class="lineno"> 323</span>  DNS_SERVER_ADDRESS(&dnsserver);</div>
<div class="line"><a name="l00324"></a><span class="lineno"> 324</span>  dns_setserver(0, &dnsserver);</div>
<div class="line"><a name="l00325"></a><span class="lineno"> 325</span> <span class="preprocessor">#endif </span><span class="comment">/* DNS_SERVER_ADDRESS */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00326"></a><span class="lineno"> 326</span>  </div>
<div class="line"><a name="l00327"></a><span class="lineno"> 327</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"sanity check SIZEOF_DNS_QUERY"</span>,</div>
<div class="line"><a name="l00328"></a><span class="lineno"> 328</span>  <span class="keyword">sizeof</span>(<span class="keyword">struct</span> dns_query) == SIZEOF_DNS_QUERY);</div>
<div class="line"><a name="l00329"></a><span class="lineno"> 329</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"sanity check SIZEOF_DNS_ANSWER"</span>,</div>
<div class="line"><a name="l00330"></a><span class="lineno"> 330</span>  <span class="keyword">sizeof</span>(<span class="keyword">struct</span> dns_answer) <= SIZEOF_DNS_ANSWER_ASSERT);</div>
<div class="line"><a name="l00331"></a><span class="lineno"> 331</span>  </div>
<div class="line"><a name="l00332"></a><span class="lineno"> 332</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#aba55da2352c99d813767913e5e36be1f">DNS_DEBUG</a>, (<span class="stringliteral">"dns_init: initializing\n"</span>));</div>
<div class="line"><a name="l00333"></a><span class="lineno"> 333</span>  </div>
<div class="line"><a name="l00334"></a><span class="lineno"> 334</span>  <span class="comment">/* if dns client not yet initialized... */</span></div>
<div class="line"><a name="l00335"></a><span class="lineno"> 335</span> <span class="preprocessor">#if ((LWIP_DNS_SECURE & LWIP_DNS_SECURE_RAND_SRC_PORT) == 0)</span></div>
<div class="line"><a name="l00336"></a><span class="lineno"> 336</span>  <span class="keywordflow">if</span> (dns_pcbs[0] == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00337"></a><span class="lineno"> 337</span>  dns_pcbs[0] = udp_new_ip_type(<a class="code" href="group__ipaddr.html#ggaf2142f0dfdcc938e2db16aa745ed585cac6b2c99cf920e08efcb55dc40e42944e">IPADDR_TYPE_ANY</a>);</div>
<div class="line"><a name="l00338"></a><span class="lineno"> 338</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"dns_pcbs[0] != NULL"</span>, dns_pcbs[0] != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l00339"></a><span class="lineno"> 339</span>  </div>
<div class="line"><a name="l00340"></a><span class="lineno"> 340</span>  <span class="comment">/* initialize DNS table not needed (initialized to zero since it is a</span></div>
<div class="line"><a name="l00341"></a><span class="lineno"> 341</span> <span class="comment"> * global variable) */</span></div>
<div class="line"><a name="l00342"></a><span class="lineno"> 342</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"For implicit initialization to work, DNS_STATE_UNUSED needs to be 0"</span>,</div>
<div class="line"><a name="l00343"></a><span class="lineno"> 343</span>  DNS_STATE_UNUSED == 0);</div>
<div class="line"><a name="l00344"></a><span class="lineno"> 344</span>  </div>
<div class="line"><a name="l00345"></a><span class="lineno"> 345</span>  <span class="comment">/* initialize DNS client */</span></div>
<div class="line"><a name="l00346"></a><span class="lineno"> 346</span>  udp_bind(dns_pcbs[0], <a class="code" href="ip__addr_8h.html#abe43b154533b73585c4e58f568370ede">IP_ANY_TYPE</a>, 0);</div>
<div class="line"><a name="l00347"></a><span class="lineno"> 347</span>  udp_recv(dns_pcbs[0], dns_recv, <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l00348"></a><span class="lineno"> 348</span>  }</div>
<div class="line"><a name="l00349"></a><span class="lineno"> 349</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00350"></a><span class="lineno"> 350</span>  </div>
<div class="line"><a name="l00351"></a><span class="lineno"> 351</span> <span class="preprocessor">#if DNS_LOCAL_HOSTLIST</span></div>
<div class="line"><a name="l00352"></a><span class="lineno"> 352</span>  dns_init_local();</div>
<div class="line"><a name="l00353"></a><span class="lineno"> 353</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00354"></a><span class="lineno"> 354</span> }</div>
<div class="line"><a name="l00355"></a><span class="lineno"> 355</span>  </div>
<div class="line"><a name="l00363"></a><span class="lineno"> 363</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00364"></a><span class="lineno"> 364</span> dns_setserver(<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> numdns, <span class="keyword">const</span> <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> *dnsserver)</div>
<div class="line"><a name="l00365"></a><span class="lineno"> 365</span> {</div>
<div class="line"><a name="l00366"></a><span class="lineno"> 366</span>  <span class="keywordflow">if</span> (numdns < <a class="code" href="lwipopts_8h.html#a9f9881c887a8aceb9765820c2dbdf292">DNS_MAX_SERVERS</a>) {</div>
<div class="line"><a name="l00367"></a><span class="lineno"> 367</span>  <span class="keywordflow">if</span> (dnsserver != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00368"></a><span class="lineno"> 368</span>  dns_servers[numdns] = (*dnsserver);</div>
<div class="line"><a name="l00369"></a><span class="lineno"> 369</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00370"></a><span class="lineno"> 370</span>  dns_servers[numdns] = *IP_ADDR_ANY;</div>
<div class="line"><a name="l00371"></a><span class="lineno"> 371</span>  }</div>
<div class="line"><a name="l00372"></a><span class="lineno"> 372</span>  }</div>
<div class="line"><a name="l00373"></a><span class="lineno"> 373</span> }</div>
<div class="line"><a name="l00374"></a><span class="lineno"> 374</span>  </div>
<div class="line"><a name="l00383"></a><span class="lineno"> 383</span> <span class="keyword">const</span> <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a>*</div>
<div class="line"><a name="l00384"></a><span class="lineno"> 384</span> dns_getserver(<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> numdns)</div>
<div class="line"><a name="l00385"></a><span class="lineno"> 385</span> {</div>
<div class="line"><a name="l00386"></a><span class="lineno"> 386</span>  <span class="keywordflow">if</span> (numdns < <a class="code" href="lwipopts_8h.html#a9f9881c887a8aceb9765820c2dbdf292">DNS_MAX_SERVERS</a>) {</div>
<div class="line"><a name="l00387"></a><span class="lineno"> 387</span>  <span class="keywordflow">return</span> &dns_servers[numdns];</div>
<div class="line"><a name="l00388"></a><span class="lineno"> 388</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00389"></a><span class="lineno"> 389</span>  <span class="keywordflow">return</span> IP_ADDR_ANY;</div>
<div class="line"><a name="l00390"></a><span class="lineno"> 390</span>  }</div>
<div class="line"><a name="l00391"></a><span class="lineno"> 391</span> }</div>
<div class="line"><a name="l00392"></a><span class="lineno"> 392</span>  </div>
<div class="line"><a name="l00397"></a><span class="lineno"> 397</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00398"></a><span class="lineno"> 398</span> dns_tmr(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l00399"></a><span class="lineno"> 399</span> {</div>
<div class="line"><a name="l00400"></a><span class="lineno"> 400</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#aba55da2352c99d813767913e5e36be1f">DNS_DEBUG</a>, (<span class="stringliteral">"dns_tmr: dns_check_entries\n"</span>));</div>
<div class="line"><a name="l00401"></a><span class="lineno"> 401</span>  dns_check_entries();</div>
<div class="line"><a name="l00402"></a><span class="lineno"> 402</span> }</div>
<div class="line"><a name="l00403"></a><span class="lineno"> 403</span>  </div>
<div class="line"><a name="l00404"></a><span class="lineno"> 404</span> <span class="preprocessor">#if DNS_LOCAL_HOSTLIST</span></div>
<div class="line"><a name="l00405"></a><span class="lineno"> 405</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00406"></a><span class="lineno"> 406</span> dns_init_local(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l00407"></a><span class="lineno"> 407</span> {</div>
<div class="line"><a name="l00408"></a><span class="lineno"> 408</span> <span class="preprocessor">#if DNS_LOCAL_HOSTLIST_IS_DYNAMIC && defined(DNS_LOCAL_HOSTLIST_INIT)</span></div>
<div class="line"><a name="l00409"></a><span class="lineno"> 409</span>  <span class="keywordtype">size_t</span> i;</div>
<div class="line"><a name="l00410"></a><span class="lineno"> 410</span>  <span class="keyword">struct </span>local_hostlist_entry *entry;</div>
<div class="line"><a name="l00411"></a><span class="lineno"> 411</span>  <span class="comment">/* Dynamic: copy entries from DNS_LOCAL_HOSTLIST_INIT to list */</span></div>
<div class="line"><a name="l00412"></a><span class="lineno"> 412</span>  <span class="keyword">struct </span>local_hostlist_entry local_hostlist_init[] = DNS_LOCAL_HOSTLIST_INIT;</div>
<div class="line"><a name="l00413"></a><span class="lineno"> 413</span>  <span class="keywordtype">size_t</span> namelen;</div>
<div class="line"><a name="l00414"></a><span class="lineno"> 414</span>  <span class="keywordflow">for</span> (i = 0; i < <a class="code" href="def_8h.html#a4abb61f4c9339d8a0a0c63b4fbfe6a37">LWIP_ARRAYSIZE</a>(local_hostlist_init); i++) {</div>
<div class="line"><a name="l00415"></a><span class="lineno"> 415</span>  <span class="keyword">struct </span>local_hostlist_entry *init_entry = &local_hostlist_init[i];</div>
<div class="line"><a name="l00416"></a><span class="lineno"> 416</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"invalid host name (NULL)"</span>, init_entry->name != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l00417"></a><span class="lineno"> 417</span>  namelen = <a class="code" href="lib_8h.html#ae6c8de953239811a34eeeab09458e55e">strlen</a>(init_entry->name);</div>
<div class="line"><a name="l00418"></a><span class="lineno"> 418</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"namelen <= DNS_LOCAL_HOSTLIST_MAX_NAMELEN"</span>, namelen <= DNS_LOCAL_HOSTLIST_MAX_NAMELEN);</div>
<div class="line"><a name="l00419"></a><span class="lineno"> 419</span>  entry = (<span class="keyword">struct </span>local_hostlist_entry *)<a class="code" href="memp_8h.html#a2b00593d086313c267b54a976bf67aa5">memp_malloc</a>(MEMP_LOCALHOSTLIST);</div>
<div class="line"><a name="l00420"></a><span class="lineno"> 420</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"mem-error in dns_init_local"</span>, entry != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l00421"></a><span class="lineno"> 421</span>  <span class="keywordflow">if</span> (entry != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00422"></a><span class="lineno"> 422</span>  <span class="keywordtype">char</span>* entry_name = (<span class="keywordtype">char</span>*)entry + <span class="keyword">sizeof</span>(<span class="keyword">struct</span> local_hostlist_entry);</div>
<div class="line"><a name="l00423"></a><span class="lineno"> 423</span>  <a class="code" href="lwipopts_8h.html#aa1dd57a66b6de8c0593e9e3e8d1411f6">MEMCPY</a>(entry_name, init_entry->name, namelen);</div>
<div class="line"><a name="l00424"></a><span class="lineno"> 424</span>  entry_name[namelen] = 0;</div>
<div class="line"><a name="l00425"></a><span class="lineno"> 425</span>  entry->name = entry_name;</div>
<div class="line"><a name="l00426"></a><span class="lineno"> 426</span>  entry->addr = init_entry->addr;</div>
<div class="line"><a name="l00427"></a><span class="lineno"> 427</span>  entry->next = local_hostlist_dynamic;</div>
<div class="line"><a name="l00428"></a><span class="lineno"> 428</span>  local_hostlist_dynamic = entry;</div>
<div class="line"><a name="l00429"></a><span class="lineno"> 429</span>  }</div>
<div class="line"><a name="l00430"></a><span class="lineno"> 430</span>  }</div>
<div class="line"><a name="l00431"></a><span class="lineno"> 431</span> <span class="preprocessor">#endif </span><span class="comment">/* DNS_LOCAL_HOSTLIST_IS_DYNAMIC && defined(DNS_LOCAL_HOSTLIST_INIT) */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00432"></a><span class="lineno"> 432</span> }</div>
<div class="line"><a name="l00433"></a><span class="lineno"> 433</span>  </div>
<div class="line"><a name="l00442"></a><span class="lineno"> 442</span> <span class="keywordtype">size_t</span></div>
<div class="line"><a name="l00443"></a><span class="lineno"> 443</span> dns_local_iterate(dns_found_callback iterator_fn, <span class="keywordtype">void</span> *iterator_arg)</div>
<div class="line"><a name="l00444"></a><span class="lineno"> 444</span> {</div>
<div class="line"><a name="l00445"></a><span class="lineno"> 445</span>  <span class="keywordtype">size_t</span> i;</div>
<div class="line"><a name="l00446"></a><span class="lineno"> 446</span> <span class="preprocessor">#if DNS_LOCAL_HOSTLIST_IS_DYNAMIC</span></div>
<div class="line"><a name="l00447"></a><span class="lineno"> 447</span>  <span class="keyword">struct </span>local_hostlist_entry *entry = local_hostlist_dynamic;</div>
<div class="line"><a name="l00448"></a><span class="lineno"> 448</span>  i = 0;</div>
<div class="line"><a name="l00449"></a><span class="lineno"> 449</span>  <span class="keywordflow">while</span> (entry != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00450"></a><span class="lineno"> 450</span>  <span class="keywordflow">if</span> (iterator_fn != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00451"></a><span class="lineno"> 451</span>  iterator_fn(entry->name, &entry->addr, iterator_arg);</div>
<div class="line"><a name="l00452"></a><span class="lineno"> 452</span>  }</div>
<div class="line"><a name="l00453"></a><span class="lineno"> 453</span>  i++;</div>
<div class="line"><a name="l00454"></a><span class="lineno"> 454</span>  entry = entry->next;</div>
<div class="line"><a name="l00455"></a><span class="lineno"> 455</span>  }</div>
<div class="line"><a name="l00456"></a><span class="lineno"> 456</span> <span class="preprocessor">#else </span><span class="comment">/* DNS_LOCAL_HOSTLIST_IS_DYNAMIC */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00457"></a><span class="lineno"> 457</span>  <span class="keywordflow">for</span> (i = 0; i < <a class="code" href="def_8h.html#a4abb61f4c9339d8a0a0c63b4fbfe6a37">LWIP_ARRAYSIZE</a>(local_hostlist_static); i++) {</div>
<div class="line"><a name="l00458"></a><span class="lineno"> 458</span>  <span class="keywordflow">if</span> (iterator_fn != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00459"></a><span class="lineno"> 459</span>  iterator_fn(local_hostlist_static[i].<a class="code" href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>, &local_hostlist_static[i].addr, iterator_arg);</div>
<div class="line"><a name="l00460"></a><span class="lineno"> 460</span>  }</div>
<div class="line"><a name="l00461"></a><span class="lineno"> 461</span>  }</div>
<div class="line"><a name="l00462"></a><span class="lineno"> 462</span> <span class="preprocessor">#endif </span><span class="comment">/* DNS_LOCAL_HOSTLIST_IS_DYNAMIC */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00463"></a><span class="lineno"> 463</span>  <span class="keywordflow">return</span> i;</div>
<div class="line"><a name="l00464"></a><span class="lineno"> 464</span> }</div>
<div class="line"><a name="l00465"></a><span class="lineno"> 465</span>  </div>
<div class="line"><a name="l00479"></a><span class="lineno"> 479</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00480"></a><span class="lineno"> 480</span> dns_local_lookup(<span class="keyword">const</span> <span class="keywordtype">char</span> *hostname, <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> *addr, <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> dns_addrtype)</div>
<div class="line"><a name="l00481"></a><span class="lineno"> 481</span> {</div>
<div class="line"><a name="l00482"></a><span class="lineno"> 482</span>  <a class="code" href="group__compiler__abstraction.html#ga70624a5deb8b9199406372a7f3603ecf">LWIP_UNUSED_ARG</a>(dns_addrtype);</div>
<div class="line"><a name="l00483"></a><span class="lineno"> 483</span>  <span class="keywordflow">return</span> dns_lookup_local(hostname, addr LWIP_DNS_ADDRTYPE_ARG(dns_addrtype));</div>
<div class="line"><a name="l00484"></a><span class="lineno"> 484</span> }</div>
<div class="line"><a name="l00485"></a><span class="lineno"> 485</span>  </div>
<div class="line"><a name="l00486"></a><span class="lineno"> 486</span> <span class="comment">/* Internal implementation for dns_local_lookup and dns_lookup */</span></div>
<div class="line"><a name="l00487"></a><span class="lineno"> 487</span> <span class="keyword">static</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00488"></a><span class="lineno"> 488</span> dns_lookup_local(<span class="keyword">const</span> <span class="keywordtype">char</span> *hostname, <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> *addr LWIP_DNS_ADDRTYPE_ARG(<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> dns_addrtype))</div>
<div class="line"><a name="l00489"></a><span class="lineno"> 489</span> {</div>
<div class="line"><a name="l00490"></a><span class="lineno"> 490</span> <span class="preprocessor">#if DNS_LOCAL_HOSTLIST_IS_DYNAMIC</span></div>
<div class="line"><a name="l00491"></a><span class="lineno"> 491</span>  <span class="keyword">struct </span>local_hostlist_entry *entry = local_hostlist_dynamic;</div>
<div class="line"><a name="l00492"></a><span class="lineno"> 492</span>  <span class="keywordflow">while</span> (entry != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00493"></a><span class="lineno"> 493</span>  <span class="keywordflow">if</span> ((<a class="code" href="group__sys__nonstandard.html#ga263cbafcb697eff964139a9998a6668a">lwip_stricmp</a>(entry->name, hostname) == 0) &&</div>
<div class="line"><a name="l00494"></a><span class="lineno"> 494</span>  LWIP_DNS_ADDRTYPE_MATCH_IP(dns_addrtype, entry->addr)) {</div>
<div class="line"><a name="l00495"></a><span class="lineno"> 495</span>  <span class="keywordflow">if</span> (addr) {</div>
<div class="line"><a name="l00496"></a><span class="lineno"> 496</span>  <a class="code" href="ip__addr_8h.html#a77a933975db287f6aa5c2e70249ba18f">ip_addr_copy</a>(*addr, entry->addr);</div>
<div class="line"><a name="l00497"></a><span class="lineno"> 497</span>  }</div>
<div class="line"><a name="l00498"></a><span class="lineno"> 498</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l00499"></a><span class="lineno"> 499</span>  }</div>
<div class="line"><a name="l00500"></a><span class="lineno"> 500</span>  entry = entry->next;</div>
<div class="line"><a name="l00501"></a><span class="lineno"> 501</span>  }</div>
<div class="line"><a name="l00502"></a><span class="lineno"> 502</span> <span class="preprocessor">#else </span><span class="comment">/* DNS_LOCAL_HOSTLIST_IS_DYNAMIC */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00503"></a><span class="lineno"> 503</span>  <span class="keywordtype">size_t</span> i;</div>
<div class="line"><a name="l00504"></a><span class="lineno"> 504</span>  <span class="keywordflow">for</span> (i = 0; i < <a class="code" href="def_8h.html#a4abb61f4c9339d8a0a0c63b4fbfe6a37">LWIP_ARRAYSIZE</a>(local_hostlist_static); i++) {</div>
<div class="line"><a name="l00505"></a><span class="lineno"> 505</span>  <span class="keywordflow">if</span> ((<a class="code" href="group__sys__nonstandard.html#ga263cbafcb697eff964139a9998a6668a">lwip_stricmp</a>(local_hostlist_static[i].<a class="code" href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>, hostname) == 0) &&</div>
<div class="line"><a name="l00506"></a><span class="lineno"> 506</span>  LWIP_DNS_ADDRTYPE_MATCH_IP(dns_addrtype, local_hostlist_static[i].addr)) {</div>
<div class="line"><a name="l00507"></a><span class="lineno"> 507</span>  <span class="keywordflow">if</span> (addr) {</div>
<div class="line"><a name="l00508"></a><span class="lineno"> 508</span>  <a class="code" href="ip__addr_8h.html#a77a933975db287f6aa5c2e70249ba18f">ip_addr_copy</a>(*addr, local_hostlist_static[i].addr);</div>
<div class="line"><a name="l00509"></a><span class="lineno"> 509</span>  }</div>
<div class="line"><a name="l00510"></a><span class="lineno"> 510</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l00511"></a><span class="lineno"> 511</span>  }</div>
<div class="line"><a name="l00512"></a><span class="lineno"> 512</span>  }</div>
<div class="line"><a name="l00513"></a><span class="lineno"> 513</span> <span class="preprocessor">#endif </span><span class="comment">/* DNS_LOCAL_HOSTLIST_IS_DYNAMIC */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00514"></a><span class="lineno"> 514</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcab508ce0ebdf3ca735208b00a80a45c91">ERR_ARG</a>;</div>
<div class="line"><a name="l00515"></a><span class="lineno"> 515</span> }</div>
<div class="line"><a name="l00516"></a><span class="lineno"> 516</span>  </div>
<div class="line"><a name="l00517"></a><span class="lineno"> 517</span> <span class="preprocessor">#if DNS_LOCAL_HOSTLIST_IS_DYNAMIC</span></div>
<div class="line"><a name="l00518"></a><span class="lineno"> 518</span>  </div>
<div class="line"><a name="l00528"></a><span class="lineno"> 528</span> <span class="keywordtype">int</span></div>
<div class="line"><a name="l00529"></a><span class="lineno"> 529</span> dns_local_removehost(<span class="keyword">const</span> <span class="keywordtype">char</span> *hostname, <span class="keyword">const</span> <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> *addr)</div>
<div class="line"><a name="l00530"></a><span class="lineno"> 530</span> {</div>
<div class="line"><a name="l00531"></a><span class="lineno"> 531</span>  <span class="keywordtype">int</span> removed = 0;</div>
<div class="line"><a name="l00532"></a><span class="lineno"> 532</span>  <span class="keyword">struct </span>local_hostlist_entry *entry = local_hostlist_dynamic;</div>
<div class="line"><a name="l00533"></a><span class="lineno"> 533</span>  <span class="keyword">struct </span>local_hostlist_entry *last_entry = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00534"></a><span class="lineno"> 534</span>  <span class="keywordflow">while</span> (entry != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00535"></a><span class="lineno"> 535</span>  <span class="keywordflow">if</span> (((hostname == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) || !<a class="code" href="group__sys__nonstandard.html#ga263cbafcb697eff964139a9998a6668a">lwip_stricmp</a>(entry->name, hostname)) &&</div>
<div class="line"><a name="l00536"></a><span class="lineno"> 536</span>  ((addr == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) || <a class="code" href="ip__addr_8h.html#a008c9c92d770cc030ea054e6b259835a">ip_addr_cmp</a>(&entry->addr, addr))) {</div>
<div class="line"><a name="l00537"></a><span class="lineno"> 537</span>  <span class="keyword">struct </span>local_hostlist_entry *free_entry;</div>
<div class="line"><a name="l00538"></a><span class="lineno"> 538</span>  <span class="keywordflow">if</span> (last_entry != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00539"></a><span class="lineno"> 539</span>  last_entry->next = entry->next;</div>
<div class="line"><a name="l00540"></a><span class="lineno"> 540</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00541"></a><span class="lineno"> 541</span>  local_hostlist_dynamic = entry->next;</div>
<div class="line"><a name="l00542"></a><span class="lineno"> 542</span>  }</div>
<div class="line"><a name="l00543"></a><span class="lineno"> 543</span>  free_entry = entry;</div>
<div class="line"><a name="l00544"></a><span class="lineno"> 544</span>  entry = entry->next;</div>
<div class="line"><a name="l00545"></a><span class="lineno"> 545</span>  <a class="code" href="memp_8h.html#aecd94926b7c2a0e23ae195f4ae97581f">memp_free</a>(MEMP_LOCALHOSTLIST, free_entry);</div>
<div class="line"><a name="l00546"></a><span class="lineno"> 546</span>  removed++;</div>
<div class="line"><a name="l00547"></a><span class="lineno"> 547</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00548"></a><span class="lineno"> 548</span>  last_entry = entry;</div>
<div class="line"><a name="l00549"></a><span class="lineno"> 549</span>  entry = entry->next;</div>
<div class="line"><a name="l00550"></a><span class="lineno"> 550</span>  }</div>
<div class="line"><a name="l00551"></a><span class="lineno"> 551</span>  }</div>
<div class="line"><a name="l00552"></a><span class="lineno"> 552</span>  <span class="keywordflow">return</span> removed;</div>
<div class="line"><a name="l00553"></a><span class="lineno"> 553</span> }</div>
<div class="line"><a name="l00554"></a><span class="lineno"> 554</span>  </div>
<div class="line"><a name="l00564"></a><span class="lineno"> 564</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00565"></a><span class="lineno"> 565</span> dns_local_addhost(<span class="keyword">const</span> <span class="keywordtype">char</span> *hostname, <span class="keyword">const</span> <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> *addr)</div>
<div class="line"><a name="l00566"></a><span class="lineno"> 566</span> {</div>
<div class="line"><a name="l00567"></a><span class="lineno"> 567</span>  <span class="keyword">struct </span>local_hostlist_entry *entry;</div>
<div class="line"><a name="l00568"></a><span class="lineno"> 568</span>  <span class="keywordtype">size_t</span> namelen;</div>
<div class="line"><a name="l00569"></a><span class="lineno"> 569</span>  <span class="keywordtype">char</span>* entry_name;</div>
<div class="line"><a name="l00570"></a><span class="lineno"> 570</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"invalid host name (NULL)"</span>, hostname != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l00571"></a><span class="lineno"> 571</span>  namelen = <a class="code" href="lib_8h.html#ae6c8de953239811a34eeeab09458e55e">strlen</a>(hostname);</div>
<div class="line"><a name="l00572"></a><span class="lineno"> 572</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"namelen <= DNS_LOCAL_HOSTLIST_MAX_NAMELEN"</span>, namelen <= DNS_LOCAL_HOSTLIST_MAX_NAMELEN);</div>
<div class="line"><a name="l00573"></a><span class="lineno"> 573</span>  entry = (<span class="keyword">struct </span>local_hostlist_entry *)<a class="code" href="memp_8h.html#a2b00593d086313c267b54a976bf67aa5">memp_malloc</a>(MEMP_LOCALHOSTLIST);</div>
<div class="line"><a name="l00574"></a><span class="lineno"> 574</span>  <span class="keywordflow">if</span> (entry == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00575"></a><span class="lineno"> 575</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaaaeafdbf3aecc46864daa3cd829c7e05">ERR_MEM</a>;</div>
<div class="line"><a name="l00576"></a><span class="lineno"> 576</span>  }</div>
<div class="line"><a name="l00577"></a><span class="lineno"> 577</span>  entry_name = (<span class="keywordtype">char</span>*)entry + <span class="keyword">sizeof</span>(<span class="keyword">struct</span> local_hostlist_entry);</div>
<div class="line"><a name="l00578"></a><span class="lineno"> 578</span>  <a class="code" href="lwipopts_8h.html#aa1dd57a66b6de8c0593e9e3e8d1411f6">MEMCPY</a>(entry_name, hostname, namelen);</div>
<div class="line"><a name="l00579"></a><span class="lineno"> 579</span>  entry_name[namelen] = 0;</div>
<div class="line"><a name="l00580"></a><span class="lineno"> 580</span>  entry->name = entry_name;</div>
<div class="line"><a name="l00581"></a><span class="lineno"> 581</span>  <a class="code" href="ip__addr_8h.html#a77a933975db287f6aa5c2e70249ba18f">ip_addr_copy</a>(entry->addr, *addr);</div>
<div class="line"><a name="l00582"></a><span class="lineno"> 582</span>  entry->next = local_hostlist_dynamic;</div>
<div class="line"><a name="l00583"></a><span class="lineno"> 583</span>  local_hostlist_dynamic = entry;</div>
<div class="line"><a name="l00584"></a><span class="lineno"> 584</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l00585"></a><span class="lineno"> 585</span> }</div>
<div class="line"><a name="l00586"></a><span class="lineno"> 586</span> <span class="preprocessor">#endif </span><span class="comment">/* DNS_LOCAL_HOSTLIST_IS_DYNAMIC*/</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00587"></a><span class="lineno"> 587</span> <span class="preprocessor">#endif </span><span class="comment">/* DNS_LOCAL_HOSTLIST */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00588"></a><span class="lineno"> 588</span>  </div>
<div class="line"><a name="l00604"></a><span class="lineno"> 604</span> <span class="keyword">static</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00605"></a><span class="lineno"> 605</span> dns_lookup(<span class="keyword">const</span> <span class="keywordtype">char</span> *<a class="code" href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>, <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> *addr LWIP_DNS_ADDRTYPE_ARG(<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> dns_addrtype))</div>
<div class="line"><a name="l00606"></a><span class="lineno"> 606</span> {</div>
<div class="line"><a name="l00607"></a><span class="lineno"> 607</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> i;</div>
<div class="line"><a name="l00608"></a><span class="lineno"> 608</span> <span class="preprocessor">#if DNS_LOCAL_HOSTLIST || defined(DNS_LOOKUP_LOCAL_EXTERN)</span></div>
<div class="line"><a name="l00609"></a><span class="lineno"> 609</span> <span class="preprocessor">#endif </span><span class="comment">/* DNS_LOCAL_HOSTLIST || defined(DNS_LOOKUP_LOCAL_EXTERN) */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00610"></a><span class="lineno"> 610</span> <span class="preprocessor">#if DNS_LOCAL_HOSTLIST</span></div>
<div class="line"><a name="l00611"></a><span class="lineno"> 611</span>  <span class="keywordflow">if</span> (dns_lookup_local(<a class="code" href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>, addr LWIP_DNS_ADDRTYPE_ARG(dns_addrtype)) == <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>) {</div>
<div class="line"><a name="l00612"></a><span class="lineno"> 612</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l00613"></a><span class="lineno"> 613</span>  }</div>
<div class="line"><a name="l00614"></a><span class="lineno"> 614</span> <span class="preprocessor">#endif </span><span class="comment">/* DNS_LOCAL_HOSTLIST */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00615"></a><span class="lineno"> 615</span> <span class="preprocessor">#ifdef DNS_LOOKUP_LOCAL_EXTERN</span></div>
<div class="line"><a name="l00616"></a><span class="lineno"> 616</span>  <span class="keywordflow">if</span> (DNS_LOOKUP_LOCAL_EXTERN(<a class="code" href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>, addr, LWIP_DNS_ADDRTYPE_ARG_OR_ZERO(dns_addrtype)) == <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>) {</div>
<div class="line"><a name="l00617"></a><span class="lineno"> 617</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l00618"></a><span class="lineno"> 618</span>  }</div>
<div class="line"><a name="l00619"></a><span class="lineno"> 619</span> <span class="preprocessor">#endif </span><span class="comment">/* DNS_LOOKUP_LOCAL_EXTERN */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00620"></a><span class="lineno"> 620</span>  </div>
<div class="line"><a name="l00621"></a><span class="lineno"> 621</span>  <span class="comment">/* Walk through name list, return entry if found. If not, return NULL. */</span></div>
<div class="line"><a name="l00622"></a><span class="lineno"> 622</span>  <span class="keywordflow">for</span> (i = 0; i < <a class="code" href="lwipopts_8h.html#a2384e76c1acdf969d883f3de08d340f7">DNS_TABLE_SIZE</a>; ++i) {</div>
<div class="line"><a name="l00623"></a><span class="lineno"> 623</span>  <span class="keywordflow">if</span> ((dns_table[i].state == DNS_STATE_DONE) &&</div>
<div class="line"><a name="l00624"></a><span class="lineno"> 624</span>  (<a class="code" href="group__sys__nonstandard.html#ga997dcc49451121d4ed755b33bc7bd26a">lwip_strnicmp</a>(<a class="code" href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>, dns_table[i].<a class="code" href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>, <span class="keyword">sizeof</span>(dns_table[i].<a class="code" href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>)) == 0) &&</div>
<div class="line"><a name="l00625"></a><span class="lineno"> 625</span>  LWIP_DNS_ADDRTYPE_MATCH_IP(dns_addrtype, dns_table[i].ipaddr)) {</div>
<div class="line"><a name="l00626"></a><span class="lineno"> 626</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#aba55da2352c99d813767913e5e36be1f">DNS_DEBUG</a>, (<span class="stringliteral">"dns_lookup: \"%s\": found = "</span>, <a class="code" href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>));</div>
<div class="line"><a name="l00627"></a><span class="lineno"> 627</span>  <a class="code" href="ip__addr_8h.html#af7d84bce2fb861a97f3047ecd69ab018">ip_addr_debug_print</a>(<a class="code" href="lwipopts_8h.html#aba55da2352c99d813767913e5e36be1f">DNS_DEBUG</a>, &(dns_table[i].ipaddr));</div>
<div class="line"><a name="l00628"></a><span class="lineno"> 628</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#aba55da2352c99d813767913e5e36be1f">DNS_DEBUG</a>, (<span class="stringliteral">"\n"</span>));</div>
<div class="line"><a name="l00629"></a><span class="lineno"> 629</span>  <span class="keywordflow">if</span> (addr) {</div>
<div class="line"><a name="l00630"></a><span class="lineno"> 630</span>  <a class="code" href="ip__addr_8h.html#a77a933975db287f6aa5c2e70249ba18f">ip_addr_copy</a>(*addr, dns_table[i].ipaddr);</div>
<div class="line"><a name="l00631"></a><span class="lineno"> 631</span>  }</div>
<div class="line"><a name="l00632"></a><span class="lineno"> 632</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l00633"></a><span class="lineno"> 633</span>  }</div>
<div class="line"><a name="l00634"></a><span class="lineno"> 634</span>  }</div>
<div class="line"><a name="l00635"></a><span class="lineno"> 635</span>  </div>
<div class="line"><a name="l00636"></a><span class="lineno"> 636</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcab508ce0ebdf3ca735208b00a80a45c91">ERR_ARG</a>;</div>
<div class="line"><a name="l00637"></a><span class="lineno"> 637</span> }</div>
<div class="line"><a name="l00638"></a><span class="lineno"> 638</span>  </div>
<div class="line"><a name="l00650"></a><span class="lineno"> 650</span> <span class="keyword">static</span> <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a></div>
<div class="line"><a name="l00651"></a><span class="lineno"> 651</span> dns_compare_name(<span class="keyword">const</span> <span class="keywordtype">char</span> *query, <span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a>* p, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> start_offset)</div>
<div class="line"><a name="l00652"></a><span class="lineno"> 652</span> {</div>
<div class="line"><a name="l00653"></a><span class="lineno"> 653</span>  <span class="keywordtype">int</span> n;</div>
<div class="line"><a name="l00654"></a><span class="lineno"> 654</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> response_offset = start_offset;</div>
<div class="line"><a name="l00655"></a><span class="lineno"> 655</span>  </div>
<div class="line"><a name="l00656"></a><span class="lineno"> 656</span>  <span class="keywordflow">do</span> {</div>
<div class="line"><a name="l00657"></a><span class="lineno"> 657</span>  n = <a class="code" href="group__pbuf.html#ga839f342803b0cf89049744124c5a98ad">pbuf_try_get_at</a>(p, response_offset++);</div>
<div class="line"><a name="l00658"></a><span class="lineno"> 658</span>  <span class="keywordflow">if</span> (n < 0) {</div>
<div class="line"><a name="l00659"></a><span class="lineno"> 659</span>  <span class="keywordflow">return</span> 0xFFFF;</div>
<div class="line"><a name="l00660"></a><span class="lineno"> 660</span>  }</div>
<div class="line"><a name="l00662"></a><span class="lineno"> 662</span>  <span class="keywordflow">if</span> ((n & 0xc0) == 0xc0) {</div>
<div class="line"><a name="l00663"></a><span class="lineno"> 663</span>  <span class="comment">/* Compressed name: cannot be equal since we don't send them */</span></div>
<div class="line"><a name="l00664"></a><span class="lineno"> 664</span>  <span class="keywordflow">return</span> 0xFFFF;</div>
<div class="line"><a name="l00665"></a><span class="lineno"> 665</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00666"></a><span class="lineno"> 666</span>  <span class="comment">/* Not compressed name */</span></div>
<div class="line"><a name="l00667"></a><span class="lineno"> 667</span>  <span class="keywordflow">while</span> (n > 0) {</div>
<div class="line"><a name="l00668"></a><span class="lineno"> 668</span>  <span class="keywordtype">int</span> c = <a class="code" href="group__pbuf.html#ga839f342803b0cf89049744124c5a98ad">pbuf_try_get_at</a>(p, response_offset);</div>
<div class="line"><a name="l00669"></a><span class="lineno"> 669</span>  <span class="keywordflow">if</span> (c < 0) {</div>
<div class="line"><a name="l00670"></a><span class="lineno"> 670</span>  <span class="keywordflow">return</span> 0xFFFF;</div>
<div class="line"><a name="l00671"></a><span class="lineno"> 671</span>  }</div>
<div class="line"><a name="l00672"></a><span class="lineno"> 672</span>  <span class="keywordflow">if</span> ((*query) != (<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a>)c) {</div>
<div class="line"><a name="l00673"></a><span class="lineno"> 673</span>  <span class="keywordflow">return</span> 0xFFFF;</div>
<div class="line"><a name="l00674"></a><span class="lineno"> 674</span>  }</div>
<div class="line"><a name="l00675"></a><span class="lineno"> 675</span>  ++response_offset;</div>
<div class="line"><a name="l00676"></a><span class="lineno"> 676</span>  ++query;</div>
<div class="line"><a name="l00677"></a><span class="lineno"> 677</span>  --n;</div>
<div class="line"><a name="l00678"></a><span class="lineno"> 678</span>  }</div>
<div class="line"><a name="l00679"></a><span class="lineno"> 679</span>  ++query;</div>
<div class="line"><a name="l00680"></a><span class="lineno"> 680</span>  }</div>
<div class="line"><a name="l00681"></a><span class="lineno"> 681</span>  n = <a class="code" href="group__pbuf.html#ga839f342803b0cf89049744124c5a98ad">pbuf_try_get_at</a>(p, response_offset);</div>
<div class="line"><a name="l00682"></a><span class="lineno"> 682</span>  <span class="keywordflow">if</span> (n < 0) {</div>
<div class="line"><a name="l00683"></a><span class="lineno"> 683</span>  <span class="keywordflow">return</span> 0xFFFF;</div>
<div class="line"><a name="l00684"></a><span class="lineno"> 684</span>  }</div>
<div class="line"><a name="l00685"></a><span class="lineno"> 685</span>  } <span class="keywordflow">while</span> (n != 0);</div>
<div class="line"><a name="l00686"></a><span class="lineno"> 686</span>  </div>
<div class="line"><a name="l00687"></a><span class="lineno"> 687</span>  <span class="keywordflow">return</span> response_offset + 1;</div>
<div class="line"><a name="l00688"></a><span class="lineno"> 688</span> }</div>
<div class="line"><a name="l00689"></a><span class="lineno"> 689</span>  </div>
<div class="line"><a name="l00697"></a><span class="lineno"> 697</span> <span class="keyword">static</span> <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a></div>
<div class="line"><a name="l00698"></a><span class="lineno"> 698</span> dns_skip_name(<span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a>* p, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> query_idx)</div>
<div class="line"><a name="l00699"></a><span class="lineno"> 699</span> {</div>
<div class="line"><a name="l00700"></a><span class="lineno"> 700</span>  <span class="keywordtype">int</span> n;</div>
<div class="line"><a name="l00701"></a><span class="lineno"> 701</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> offset = query_idx;</div>
<div class="line"><a name="l00702"></a><span class="lineno"> 702</span>  </div>
<div class="line"><a name="l00703"></a><span class="lineno"> 703</span>  <span class="keywordflow">do</span> {</div>
<div class="line"><a name="l00704"></a><span class="lineno"> 704</span>  n = <a class="code" href="group__pbuf.html#ga839f342803b0cf89049744124c5a98ad">pbuf_try_get_at</a>(p, offset++);</div>
<div class="line"><a name="l00705"></a><span class="lineno"> 705</span>  <span class="keywordflow">if</span> (n < 0) {</div>
<div class="line"><a name="l00706"></a><span class="lineno"> 706</span>  <span class="keywordflow">return</span> 0xFFFF;</div>
<div class="line"><a name="l00707"></a><span class="lineno"> 707</span>  }</div>
<div class="line"><a name="l00709"></a><span class="lineno"> 709</span>  <span class="keywordflow">if</span> ((n & 0xc0) == 0xc0) {</div>
<div class="line"><a name="l00710"></a><span class="lineno"> 710</span>  <span class="comment">/* Compressed name: since we only want to skip it (not check it), stop here */</span></div>
<div class="line"><a name="l00711"></a><span class="lineno"> 711</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00712"></a><span class="lineno"> 712</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00713"></a><span class="lineno"> 713</span>  <span class="comment">/* Not compressed name */</span></div>
<div class="line"><a name="l00714"></a><span class="lineno"> 714</span>  <span class="keywordflow">if</span> (offset + n >= p-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a>) {</div>
<div class="line"><a name="l00715"></a><span class="lineno"> 715</span>  <span class="keywordflow">return</span> 0xFFFF;</div>
<div class="line"><a name="l00716"></a><span class="lineno"> 716</span>  }</div>
<div class="line"><a name="l00717"></a><span class="lineno"> 717</span>  offset = (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)(offset + n);</div>
<div class="line"><a name="l00718"></a><span class="lineno"> 718</span>  }</div>
<div class="line"><a name="l00719"></a><span class="lineno"> 719</span>  n = <a class="code" href="group__pbuf.html#ga839f342803b0cf89049744124c5a98ad">pbuf_try_get_at</a>(p, offset);</div>
<div class="line"><a name="l00720"></a><span class="lineno"> 720</span>  <span class="keywordflow">if</span> (n < 0) {</div>
<div class="line"><a name="l00721"></a><span class="lineno"> 721</span>  <span class="keywordflow">return</span> 0xFFFF;</div>
<div class="line"><a name="l00722"></a><span class="lineno"> 722</span>  }</div>
<div class="line"><a name="l00723"></a><span class="lineno"> 723</span>  } <span class="keywordflow">while</span> (n != 0);</div>
<div class="line"><a name="l00724"></a><span class="lineno"> 724</span>  </div>
<div class="line"><a name="l00725"></a><span class="lineno"> 725</span>  <span class="keywordflow">return</span> offset + 1;</div>
<div class="line"><a name="l00726"></a><span class="lineno"> 726</span> }</div>
<div class="line"><a name="l00727"></a><span class="lineno"> 727</span>  </div>
<div class="line"><a name="l00734"></a><span class="lineno"> 734</span> <span class="keyword">static</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l00735"></a><span class="lineno"> 735</span> dns_send(<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> idx)</div>
<div class="line"><a name="l00736"></a><span class="lineno"> 736</span> {</div>
<div class="line"><a name="l00737"></a><span class="lineno"> 737</span>  <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> err;</div>
<div class="line"><a name="l00738"></a><span class="lineno"> 738</span>  <span class="keyword">struct </span><a class="code" href="structdns__hdr.html">dns_hdr</a> hdr;</div>
<div class="line"><a name="l00739"></a><span class="lineno"> 739</span>  <span class="keyword">struct </span>dns_query qry;</div>
<div class="line"><a name="l00740"></a><span class="lineno"> 740</span>  <span class="keyword">struct </span><a class="code" href="structpbuf.html">pbuf</a> *p;</div>
<div class="line"><a name="l00741"></a><span class="lineno"> 741</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> query_idx, copy_len;</div>
<div class="line"><a name="l00742"></a><span class="lineno"> 742</span>  <span class="keyword">const</span> <span class="keywordtype">char</span> *hostname, *hostname_part;</div>
<div class="line"><a name="l00743"></a><span class="lineno"> 743</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> n;</div>
<div class="line"><a name="l00744"></a><span class="lineno"> 744</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> pcb_idx;</div>
<div class="line"><a name="l00745"></a><span class="lineno"> 745</span>  <span class="keyword">struct </span>dns_table_entry* entry = &dns_table[idx];</div>
<div class="line"><a name="l00746"></a><span class="lineno"> 746</span>  </div>
<div class="line"><a name="l00747"></a><span class="lineno"> 747</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#aba55da2352c99d813767913e5e36be1f">DNS_DEBUG</a>, (<span class="stringliteral">"dns_send: dns_servers[%"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">"] \"%s\": request\n"</span>,</div>
<div class="line"><a name="l00748"></a><span class="lineno"> 748</span>  (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)(entry->server_idx), entry->name));</div>
<div class="line"><a name="l00749"></a><span class="lineno"> 749</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"dns server out of array"</span>, entry->server_idx < <a class="code" href="lwipopts_8h.html#a9f9881c887a8aceb9765820c2dbdf292">DNS_MAX_SERVERS</a>);</div>
<div class="line"><a name="l00750"></a><span class="lineno"> 750</span>  <span class="keywordflow">if</span> (<a class="code" href="ip__addr_8h.html#acd8f5aa151cff966fd28368b85f38c05">ip_addr_isany_val</a>(dns_servers[entry->server_idx])</div>
<div class="line"><a name="l00751"></a><span class="lineno"> 751</span> #<span class="keywordflow">if</span> <a class="code" href="lwipopts_8h.html#afcbde5706a70ace562bd1f7d2d6f77cb">LWIP_DNS_SUPPORT_MDNS_QUERIES</a></div>
<div class="line"><a name="l00752"></a><span class="lineno"> 752</span>  && !entry->is_mdns</div>
<div class="line"><a name="l00753"></a><span class="lineno"> 753</span> #endif</div>
<div class="line"><a name="l00754"></a><span class="lineno"> 754</span>  ) {</div>
<div class="line"><a name="l00755"></a><span class="lineno"> 755</span>  <span class="comment">/* DNS server not valid anymore, e.g. PPP netif has been shut down */</span></div>
<div class="line"><a name="l00756"></a><span class="lineno"> 756</span>  <span class="comment">/* call specified callback function if provided */</span></div>
<div class="line"><a name="l00757"></a><span class="lineno"> 757</span>  dns_call_found(idx, <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l00758"></a><span class="lineno"> 758</span>  <span class="comment">/* flush this entry */</span></div>
<div class="line"><a name="l00759"></a><span class="lineno"> 759</span>  entry->state = DNS_STATE_UNUSED;</div>
<div class="line"><a name="l00760"></a><span class="lineno"> 760</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l00761"></a><span class="lineno"> 761</span>  }</div>
<div class="line"><a name="l00762"></a><span class="lineno"> 762</span>  </div>
<div class="line"><a name="l00763"></a><span class="lineno"> 763</span>  <span class="comment">/* if here, we have either a new query or a retry on a previous query to process */</span></div>
<div class="line"><a name="l00764"></a><span class="lineno"> 764</span>  p = <a class="code" href="group__pbuf.html#gacfcb0a2af918658ba0afe36499c65f47">pbuf_alloc</a>(<a class="code" href="group__pbuf.html#ggaee1baa59bb2f85ba575b5a8619ac1ebfa2ded3594a3977f8bf9cf09552be327b5">PBUF_TRANSPORT</a>, (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)(<a class="code" href="prot_2dns_8h.html#a1ffff846513e2493ba915d8874c26476">SIZEOF_DNS_HDR</a> + <a class="code" href="lib_8h.html#ae6c8de953239811a34eeeab09458e55e">strlen</a>(entry->name) + 2 +</div>
<div class="line"><a name="l00765"></a><span class="lineno"> 765</span>  SIZEOF_DNS_QUERY), <a class="code" href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbac5e9f28455bca98944a030d4b84ecfab">PBUF_RAM</a>);</div>
<div class="line"><a name="l00766"></a><span class="lineno"> 766</span>  <span class="keywordflow">if</span> (p != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00767"></a><span class="lineno"> 767</span>  <span class="keyword">const</span> <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a>* dst;</div>
<div class="line"><a name="l00768"></a><span class="lineno"> 768</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> dst_port;</div>
<div class="line"><a name="l00769"></a><span class="lineno"> 769</span>  <span class="comment">/* fill dns header */</span></div>
<div class="line"><a name="l00770"></a><span class="lineno"> 770</span>  <a class="code" href="string_8h.html#ace4b911463887af5e748326323e99a23">memset</a>(&hdr, 0, <a class="code" href="prot_2dns_8h.html#a1ffff846513e2493ba915d8874c26476">SIZEOF_DNS_HDR</a>);</div>
<div class="line"><a name="l00771"></a><span class="lineno"> 771</span>  hdr.id = <a class="code" href="def_8c.html#ad637280639de4066392e6b5614fa3e56">lwip_htons</a>(entry->txid);</div>
<div class="line"><a name="l00772"></a><span class="lineno"> 772</span>  hdr.flags1 = <a class="code" href="prot_2dns_8h.html#a72d99b1623afa14bd58c667b748c2ddc">DNS_FLAG1_RD</a>;</div>
<div class="line"><a name="l00773"></a><span class="lineno"> 773</span>  hdr.numquestions = <a class="code" href="def_8h.html#a0dfd02d7c09f9c698a5a7ecc0b7287ad">PP_HTONS</a>(1);</div>
<div class="line"><a name="l00774"></a><span class="lineno"> 774</span>  <a class="code" href="group__pbuf.html#gad1e31e370271335b197272af2724ca85">pbuf_take</a>(p, &hdr, <a class="code" href="prot_2dns_8h.html#a1ffff846513e2493ba915d8874c26476">SIZEOF_DNS_HDR</a>);</div>
<div class="line"><a name="l00775"></a><span class="lineno"> 775</span>  hostname = entry->name;</div>
<div class="line"><a name="l00776"></a><span class="lineno"> 776</span>  --hostname;</div>
<div class="line"><a name="l00777"></a><span class="lineno"> 777</span>  </div>
<div class="line"><a name="l00778"></a><span class="lineno"> 778</span>  <span class="comment">/* convert hostname into suitable query format. */</span></div>
<div class="line"><a name="l00779"></a><span class="lineno"> 779</span>  query_idx = <a class="code" href="prot_2dns_8h.html#a1ffff846513e2493ba915d8874c26476">SIZEOF_DNS_HDR</a>;</div>
<div class="line"><a name="l00780"></a><span class="lineno"> 780</span>  <span class="keywordflow">do</span> {</div>
<div class="line"><a name="l00781"></a><span class="lineno"> 781</span>  ++hostname;</div>
<div class="line"><a name="l00782"></a><span class="lineno"> 782</span>  hostname_part = hostname;</div>
<div class="line"><a name="l00783"></a><span class="lineno"> 783</span>  <span class="keywordflow">for</span> (n = 0; *hostname != <span class="charliteral">'.'</span> && *hostname != 0; ++hostname) {</div>
<div class="line"><a name="l00784"></a><span class="lineno"> 784</span>  ++n;</div>
<div class="line"><a name="l00785"></a><span class="lineno"> 785</span>  }</div>
<div class="line"><a name="l00786"></a><span class="lineno"> 786</span>  copy_len = (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)(hostname - hostname_part);</div>
<div class="line"><a name="l00787"></a><span class="lineno"> 787</span>  <a class="code" href="group__pbuf.html#gaf76863707dc02993eae116574b1ea03f">pbuf_put_at</a>(p, query_idx, n);</div>
<div class="line"><a name="l00788"></a><span class="lineno"> 788</span>  <a class="code" href="group__pbuf.html#gae1cf2bf7454ff87ff377b0b2262f9b44">pbuf_take_at</a>(p, hostname_part, copy_len, query_idx + 1);</div>
<div class="line"><a name="l00789"></a><span class="lineno"> 789</span>  query_idx += n + 1;</div>
<div class="line"><a name="l00790"></a><span class="lineno"> 790</span>  } <span class="keywordflow">while</span> (*hostname != 0);</div>
<div class="line"><a name="l00791"></a><span class="lineno"> 791</span>  <a class="code" href="group__pbuf.html#gaf76863707dc02993eae116574b1ea03f">pbuf_put_at</a>(p, query_idx, 0);</div>
<div class="line"><a name="l00792"></a><span class="lineno"> 792</span>  query_idx++;</div>
<div class="line"><a name="l00793"></a><span class="lineno"> 793</span>  </div>
<div class="line"><a name="l00794"></a><span class="lineno"> 794</span>  <span class="comment">/* fill dns query */</span></div>
<div class="line"><a name="l00795"></a><span class="lineno"> 795</span>  <span class="keywordflow">if</span> (LWIP_DNS_ADDRTYPE_IS_IPV6(entry->reqaddrtype)) {</div>
<div class="line"><a name="l00796"></a><span class="lineno"> 796</span>  qry.type = <a class="code" href="def_8h.html#a0dfd02d7c09f9c698a5a7ecc0b7287ad">PP_HTONS</a>(<a class="code" href="prot_2dns_8h.html#ae533fbb9f59f4de915ed3ecb9ff24953">DNS_RRTYPE_AAAA</a>);</div>
<div class="line"><a name="l00797"></a><span class="lineno"> 797</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00798"></a><span class="lineno"> 798</span>  qry.type = <a class="code" href="def_8h.html#a0dfd02d7c09f9c698a5a7ecc0b7287ad">PP_HTONS</a>(<a class="code" href="prot_2dns_8h.html#a830e99420463950d3c4d661487f20d0d">DNS_RRTYPE_A</a>);</div>
<div class="line"><a name="l00799"></a><span class="lineno"> 799</span>  }</div>
<div class="line"><a name="l00800"></a><span class="lineno"> 800</span>  qry.cls = <a class="code" href="def_8h.html#a0dfd02d7c09f9c698a5a7ecc0b7287ad">PP_HTONS</a>(<a class="code" href="prot_2dns_8h.html#a08bc1c1897d2921b6f102365be55da2a">DNS_RRCLASS_IN</a>);</div>
<div class="line"><a name="l00801"></a><span class="lineno"> 801</span>  <a class="code" href="group__pbuf.html#gae1cf2bf7454ff87ff377b0b2262f9b44">pbuf_take_at</a>(p, &qry, SIZEOF_DNS_QUERY, query_idx);</div>
<div class="line"><a name="l00802"></a><span class="lineno"> 802</span>  </div>
<div class="line"><a name="l00803"></a><span class="lineno"> 803</span> <span class="preprocessor">#if ((LWIP_DNS_SECURE & LWIP_DNS_SECURE_RAND_SRC_PORT) != 0)</span></div>
<div class="line"><a name="l00804"></a><span class="lineno"> 804</span>  pcb_idx = entry->pcb_idx;</div>
<div class="line"><a name="l00805"></a><span class="lineno"> 805</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00806"></a><span class="lineno"> 806</span>  pcb_idx = 0;</div>
<div class="line"><a name="l00807"></a><span class="lineno"> 807</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00808"></a><span class="lineno"> 808</span>  <span class="comment">/* send dns packet */</span></div>
<div class="line"><a name="l00809"></a><span class="lineno"> 809</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#aba55da2352c99d813767913e5e36be1f">DNS_DEBUG</a>, (<span class="stringliteral">"sending DNS request ID %d for name \"%s\" to server %d\r\n"</span>,</div>
<div class="line"><a name="l00810"></a><span class="lineno"> 810</span>  entry->txid, entry->name, entry->server_idx));</div>
<div class="line"><a name="l00811"></a><span class="lineno"> 811</span> <span class="preprocessor">#if LWIP_DNS_SUPPORT_MDNS_QUERIES</span></div>
<div class="line"><a name="l00812"></a><span class="lineno"> 812</span>  <span class="keywordflow">if</span> (entry->is_mdns) {</div>
<div class="line"><a name="l00813"></a><span class="lineno"> 813</span>  dst_port = <a class="code" href="prot_2dns_8h.html#a62d67af5ac6c6b3f98a6566a42564276">DNS_MQUERY_PORT</a>;</div>
<div class="line"><a name="l00814"></a><span class="lineno"> 814</span> <span class="preprocessor">#if LWIP_IPV6</span></div>
<div class="line"><a name="l00815"></a><span class="lineno"> 815</span>  <span class="keywordflow">if</span> (LWIP_DNS_ADDRTYPE_IS_IPV6(entry->reqaddrtype))</div>
<div class="line"><a name="l00816"></a><span class="lineno"> 816</span>  {</div>
<div class="line"><a name="l00817"></a><span class="lineno"> 817</span>  dst = &dns_mquery_v6group;</div>
<div class="line"><a name="l00818"></a><span class="lineno"> 818</span>  }</div>
<div class="line"><a name="l00819"></a><span class="lineno"> 819</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00820"></a><span class="lineno"> 820</span> <span class="preprocessor">#if LWIP_IPV4 && LWIP_IPV6</span></div>
<div class="line"><a name="l00821"></a><span class="lineno"> 821</span>  <span class="keywordflow">else</span></div>
<div class="line"><a name="l00822"></a><span class="lineno"> 822</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00823"></a><span class="lineno"> 823</span> <span class="preprocessor">#if LWIP_IPV4</span></div>
<div class="line"><a name="l00824"></a><span class="lineno"> 824</span>  {</div>
<div class="line"><a name="l00825"></a><span class="lineno"> 825</span>  dst = &dns_mquery_v4group;</div>
<div class="line"><a name="l00826"></a><span class="lineno"> 826</span>  }</div>
<div class="line"><a name="l00827"></a><span class="lineno"> 827</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00828"></a><span class="lineno"> 828</span>  } <span class="keywordflow">else</span></div>
<div class="line"><a name="l00829"></a><span class="lineno"> 829</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_DNS_SUPPORT_MDNS_QUERIES */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00830"></a><span class="lineno"> 830</span>  {</div>
<div class="line"><a name="l00831"></a><span class="lineno"> 831</span>  dst_port = <a class="code" href="prot_2dns_8h.html#a9266b48706648ecf0625a3e651095317">DNS_SERVER_PORT</a>;</div>
<div class="line"><a name="l00832"></a><span class="lineno"> 832</span>  dst = &dns_servers[entry->server_idx];</div>
<div class="line"><a name="l00833"></a><span class="lineno"> 833</span>  }</div>
<div class="line"><a name="l00834"></a><span class="lineno"> 834</span>  err = udp_sendto(dns_pcbs[pcb_idx], p, dst, dst_port);</div>
<div class="line"><a name="l00835"></a><span class="lineno"> 835</span>  </div>
<div class="line"><a name="l00836"></a><span class="lineno"> 836</span>  <span class="comment">/* free pbuf */</span></div>
<div class="line"><a name="l00837"></a><span class="lineno"> 837</span>  <a class="code" href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a>(p);</div>
<div class="line"><a name="l00838"></a><span class="lineno"> 838</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00839"></a><span class="lineno"> 839</span>  err = <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaaaeafdbf3aecc46864daa3cd829c7e05">ERR_MEM</a>;</div>
<div class="line"><a name="l00840"></a><span class="lineno"> 840</span>  }</div>
<div class="line"><a name="l00841"></a><span class="lineno"> 841</span>  </div>
<div class="line"><a name="l00842"></a><span class="lineno"> 842</span>  <span class="keywordflow">return</span> err;</div>
<div class="line"><a name="l00843"></a><span class="lineno"> 843</span> }</div>
<div class="line"><a name="l00844"></a><span class="lineno"> 844</span>  </div>
<div class="line"><a name="l00845"></a><span class="lineno"> 845</span> <span class="preprocessor">#if ((LWIP_DNS_SECURE & LWIP_DNS_SECURE_RAND_SRC_PORT) != 0)</span></div>
<div class="line"><a name="l00846"></a><span class="lineno"> 846</span> <span class="keyword">static</span> <span class="keyword">struct </span>udp_pcb*</div>
<div class="line"><a name="l00847"></a><span class="lineno"> 847</span> dns_alloc_random_port(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l00848"></a><span class="lineno"> 848</span> {</div>
<div class="line"><a name="l00849"></a><span class="lineno"> 849</span>  <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> err;</div>
<div class="line"><a name="l00850"></a><span class="lineno"> 850</span>  <span class="keyword">struct </span>udp_pcb* ret;</div>
<div class="line"><a name="l00851"></a><span class="lineno"> 851</span>  </div>
<div class="line"><a name="l00852"></a><span class="lineno"> 852</span>  ret = udp_new_ip_type(<a class="code" href="group__ipaddr.html#ggaf2142f0dfdcc938e2db16aa745ed585cac6b2c99cf920e08efcb55dc40e42944e">IPADDR_TYPE_ANY</a>);</div>
<div class="line"><a name="l00853"></a><span class="lineno"> 853</span>  <span class="keywordflow">if</span> (ret == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00854"></a><span class="lineno"> 854</span>  <span class="comment">/* out of memory, have to reuse an existing pcb */</span></div>
<div class="line"><a name="l00855"></a><span class="lineno"> 855</span>  <span class="keywordflow">return</span> <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00856"></a><span class="lineno"> 856</span>  }</div>
<div class="line"><a name="l00857"></a><span class="lineno"> 857</span>  <span class="keywordflow">do</span> {</div>
<div class="line"><a name="l00858"></a><span class="lineno"> 858</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> port = (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)DNS_RAND_TXID();</div>
<div class="line"><a name="l00859"></a><span class="lineno"> 859</span>  <span class="keywordflow">if</span> (!DNS_PORT_ALLOWED(port)) {</div>
<div class="line"><a name="l00860"></a><span class="lineno"> 860</span>  <span class="comment">/* this port is not allowed, try again */</span></div>
<div class="line"><a name="l00861"></a><span class="lineno"> 861</span>  err = <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadca4ebdc2aa1dbd75f927845733a3fb1f8b">ERR_USE</a>;</div>
<div class="line"><a name="l00862"></a><span class="lineno"> 862</span>  <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l00863"></a><span class="lineno"> 863</span>  }</div>
<div class="line"><a name="l00864"></a><span class="lineno"> 864</span>  err = udp_bind(ret, <a class="code" href="ip__addr_8h.html#abe43b154533b73585c4e58f568370ede">IP_ANY_TYPE</a>, port);</div>
<div class="line"><a name="l00865"></a><span class="lineno"> 865</span>  } <span class="keywordflow">while</span> (err == <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadca4ebdc2aa1dbd75f927845733a3fb1f8b">ERR_USE</a>);</div>
<div class="line"><a name="l00866"></a><span class="lineno"> 866</span>  <span class="keywordflow">if</span> (err != <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>) {</div>
<div class="line"><a name="l00867"></a><span class="lineno"> 867</span>  udp_remove(ret);</div>
<div class="line"><a name="l00868"></a><span class="lineno"> 868</span>  <span class="keywordflow">return</span> <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00869"></a><span class="lineno"> 869</span>  }</div>
<div class="line"><a name="l00870"></a><span class="lineno"> 870</span>  udp_recv(ret, dns_recv, <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l00871"></a><span class="lineno"> 871</span>  <span class="keywordflow">return</span> ret;</div>
<div class="line"><a name="l00872"></a><span class="lineno"> 872</span> }</div>
<div class="line"><a name="l00873"></a><span class="lineno"> 873</span>  </div>
<div class="line"><a name="l00880"></a><span class="lineno"> 880</span> <span class="keyword">static</span> <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a></div>
<div class="line"><a name="l00881"></a><span class="lineno"> 881</span> dns_alloc_pcb(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l00882"></a><span class="lineno"> 882</span> {</div>
<div class="line"><a name="l00883"></a><span class="lineno"> 883</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> i;</div>
<div class="line"><a name="l00884"></a><span class="lineno"> 884</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> idx;</div>
<div class="line"><a name="l00885"></a><span class="lineno"> 885</span>  </div>
<div class="line"><a name="l00886"></a><span class="lineno"> 886</span>  <span class="keywordflow">for</span> (i = 0; i < DNS_MAX_SOURCE_PORTS; i++) {</div>
<div class="line"><a name="l00887"></a><span class="lineno"> 887</span>  <span class="keywordflow">if</span> (dns_pcbs[i] == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00888"></a><span class="lineno"> 888</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00889"></a><span class="lineno"> 889</span>  }</div>
<div class="line"><a name="l00890"></a><span class="lineno"> 890</span>  }</div>
<div class="line"><a name="l00891"></a><span class="lineno"> 891</span>  <span class="keywordflow">if</span> (i < DNS_MAX_SOURCE_PORTS) {</div>
<div class="line"><a name="l00892"></a><span class="lineno"> 892</span>  dns_pcbs[i] = dns_alloc_random_port();</div>
<div class="line"><a name="l00893"></a><span class="lineno"> 893</span>  <span class="keywordflow">if</span> (dns_pcbs[i] != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00894"></a><span class="lineno"> 894</span>  <span class="comment">/* succeeded */</span></div>
<div class="line"><a name="l00895"></a><span class="lineno"> 895</span>  dns_last_pcb_idx = i;</div>
<div class="line"><a name="l00896"></a><span class="lineno"> 896</span>  <span class="keywordflow">return</span> i;</div>
<div class="line"><a name="l00897"></a><span class="lineno"> 897</span>  }</div>
<div class="line"><a name="l00898"></a><span class="lineno"> 898</span>  }</div>
<div class="line"><a name="l00899"></a><span class="lineno"> 899</span>  <span class="comment">/* if we come here, creating a new UDP pcb failed, so we have to use</span></div>
<div class="line"><a name="l00900"></a><span class="lineno"> 900</span> <span class="comment"> an already existing one */</span></div>
<div class="line"><a name="l00901"></a><span class="lineno"> 901</span>  <span class="keywordflow">for</span> (i = 0, idx = dns_last_pcb_idx + 1; i < DNS_MAX_SOURCE_PORTS; i++, idx++) {</div>
<div class="line"><a name="l00902"></a><span class="lineno"> 902</span>  <span class="keywordflow">if</span> (idx >= DNS_MAX_SOURCE_PORTS) {</div>
<div class="line"><a name="l00903"></a><span class="lineno"> 903</span>  idx = 0;</div>
<div class="line"><a name="l00904"></a><span class="lineno"> 904</span>  }</div>
<div class="line"><a name="l00905"></a><span class="lineno"> 905</span>  <span class="keywordflow">if</span> (dns_pcbs[idx] != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00906"></a><span class="lineno"> 906</span>  dns_last_pcb_idx = idx;</div>
<div class="line"><a name="l00907"></a><span class="lineno"> 907</span>  <span class="keywordflow">return</span> idx;</div>
<div class="line"><a name="l00908"></a><span class="lineno"> 908</span>  }</div>
<div class="line"><a name="l00909"></a><span class="lineno"> 909</span>  }</div>
<div class="line"><a name="l00910"></a><span class="lineno"> 910</span>  <span class="keywordflow">return</span> DNS_MAX_SOURCE_PORTS;</div>
<div class="line"><a name="l00911"></a><span class="lineno"> 911</span> }</div>
<div class="line"><a name="l00912"></a><span class="lineno"> 912</span> <span class="preprocessor">#endif </span><span class="comment">/* ((LWIP_DNS_SECURE & LWIP_DNS_SECURE_RAND_SRC_PORT) != 0) */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00913"></a><span class="lineno"> 913</span>  </div>
<div class="line"><a name="l00922"></a><span class="lineno"> 922</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l00923"></a><span class="lineno"> 923</span> dns_call_found(<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> idx, <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a>* addr)</div>
<div class="line"><a name="l00924"></a><span class="lineno"> 924</span> {</div>
<div class="line"><a name="l00925"></a><span class="lineno"> 925</span> <span class="preprocessor">#if ((LWIP_DNS_SECURE & (LWIP_DNS_SECURE_NO_MULTIPLE_OUTSTANDING | LWIP_DNS_SECURE_RAND_SRC_PORT)) != 0)</span></div>
<div class="line"><a name="l00926"></a><span class="lineno"> 926</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> i;</div>
<div class="line"><a name="l00927"></a><span class="lineno"> 927</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00928"></a><span class="lineno"> 928</span>  </div>
<div class="line"><a name="l00929"></a><span class="lineno"> 929</span> <span class="preprocessor">#if LWIP_IPV4 && LWIP_IPV6</span></div>
<div class="line"><a name="l00930"></a><span class="lineno"> 930</span>  <span class="keywordflow">if</span> (addr != <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l00931"></a><span class="lineno"> 931</span>  <span class="comment">/* check that address type matches the request and adapt the table entry */</span></div>
<div class="line"><a name="l00932"></a><span class="lineno"> 932</span>  <span class="keywordflow">if</span> (<a class="code" href="ip__addr_8h.html#a1578e34703e86711a7fb7dcc3857004d">IP_IS_V6_VAL</a>(*addr)) {</div>
<div class="line"><a name="l00933"></a><span class="lineno"> 933</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"invalid response"</span>, LWIP_DNS_ADDRTYPE_IS_IPV6(dns_table[idx].reqaddrtype));</div>
<div class="line"><a name="l00934"></a><span class="lineno"> 934</span>  dns_table[idx].reqaddrtype = LWIP_DNS_ADDRTYPE_IPV6;</div>
<div class="line"><a name="l00935"></a><span class="lineno"> 935</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l00936"></a><span class="lineno"> 936</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"invalid response"</span>, !LWIP_DNS_ADDRTYPE_IS_IPV6(dns_table[idx].reqaddrtype));</div>
<div class="line"><a name="l00937"></a><span class="lineno"> 937</span>  dns_table[idx].reqaddrtype = LWIP_DNS_ADDRTYPE_IPV4;</div>
<div class="line"><a name="l00938"></a><span class="lineno"> 938</span>  }</div>
<div class="line"><a name="l00939"></a><span class="lineno"> 939</span>  }</div>
<div class="line"><a name="l00940"></a><span class="lineno"> 940</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV4 && LWIP_IPV6 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l00941"></a><span class="lineno"> 941</span>  </div>
<div class="line"><a name="l00942"></a><span class="lineno"> 942</span> <span class="preprocessor">#if ((LWIP_DNS_SECURE & LWIP_DNS_SECURE_NO_MULTIPLE_OUTSTANDING) != 0)</span></div>
<div class="line"><a name="l00943"></a><span class="lineno"> 943</span>  <span class="keywordflow">for</span> (i = 0; i < DNS_MAX_REQUESTS; i++) {</div>
<div class="line"><a name="l00944"></a><span class="lineno"> 944</span>  <span class="keywordflow">if</span> (dns_requests[i].found && (dns_requests[i].dns_table_idx == idx)) {</div>
<div class="line"><a name="l00945"></a><span class="lineno"> 945</span>  (*dns_requests[i].found)(dns_table[idx].<a class="code" href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>, addr, dns_requests[i].arg);</div>
<div class="line"><a name="l00946"></a><span class="lineno"> 946</span>  <span class="comment">/* flush this entry */</span></div>
<div class="line"><a name="l00947"></a><span class="lineno"> 947</span>  dns_requests[i].found = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00948"></a><span class="lineno"> 948</span>  }</div>
<div class="line"><a name="l00949"></a><span class="lineno"> 949</span>  }</div>
<div class="line"><a name="l00950"></a><span class="lineno"> 950</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l00951"></a><span class="lineno"> 951</span>  <span class="keywordflow">if</span> (dns_requests[idx].found) {</div>
<div class="line"><a name="l00952"></a><span class="lineno"> 952</span>  (*dns_requests[idx].found)(dns_table[idx].<a class="code" href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>, addr, dns_requests[idx].arg);</div>
<div class="line"><a name="l00953"></a><span class="lineno"> 953</span>  }</div>
<div class="line"><a name="l00954"></a><span class="lineno"> 954</span>  dns_requests[idx].found = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00955"></a><span class="lineno"> 955</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00956"></a><span class="lineno"> 956</span> <span class="preprocessor">#if ((LWIP_DNS_SECURE & LWIP_DNS_SECURE_RAND_SRC_PORT) != 0)</span></div>
<div class="line"><a name="l00957"></a><span class="lineno"> 957</span>  <span class="comment">/* close the pcb used unless other request are using it */</span></div>
<div class="line"><a name="l00958"></a><span class="lineno"> 958</span>  <span class="keywordflow">for</span> (i = 0; i < DNS_MAX_REQUESTS; i++) {</div>
<div class="line"><a name="l00959"></a><span class="lineno"> 959</span>  <span class="keywordflow">if</span> (i == idx) {</div>
<div class="line"><a name="l00960"></a><span class="lineno"> 960</span>  <span class="keywordflow">continue</span>; <span class="comment">/* only check other requests */</span></div>
<div class="line"><a name="l00961"></a><span class="lineno"> 961</span>  }</div>
<div class="line"><a name="l00962"></a><span class="lineno"> 962</span>  <span class="keywordflow">if</span> (dns_table[i].state == DNS_STATE_ASKING) {</div>
<div class="line"><a name="l00963"></a><span class="lineno"> 963</span>  <span class="keywordflow">if</span> (dns_table[i].pcb_idx == dns_table[idx].pcb_idx) {</div>
<div class="line"><a name="l00964"></a><span class="lineno"> 964</span>  <span class="comment">/* another request is still using the same pcb */</span></div>
<div class="line"><a name="l00965"></a><span class="lineno"> 965</span>  dns_table[idx].pcb_idx = DNS_MAX_SOURCE_PORTS;</div>
<div class="line"><a name="l00966"></a><span class="lineno"> 966</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l00967"></a><span class="lineno"> 967</span>  }</div>
<div class="line"><a name="l00968"></a><span class="lineno"> 968</span>  }</div>
<div class="line"><a name="l00969"></a><span class="lineno"> 969</span>  }</div>
<div class="line"><a name="l00970"></a><span class="lineno"> 970</span>  <span class="keywordflow">if</span> (dns_table[idx].pcb_idx < DNS_MAX_SOURCE_PORTS) {</div>
<div class="line"><a name="l00971"></a><span class="lineno"> 971</span>  <span class="comment">/* if we come here, the pcb is not used any more and can be removed */</span></div>
<div class="line"><a name="l00972"></a><span class="lineno"> 972</span>  udp_remove(dns_pcbs[dns_table[idx].pcb_idx]);</div>
<div class="line"><a name="l00973"></a><span class="lineno"> 973</span>  dns_pcbs[dns_table[idx].pcb_idx] = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l00974"></a><span class="lineno"> 974</span>  dns_table[idx].pcb_idx = DNS_MAX_SOURCE_PORTS;</div>
<div class="line"><a name="l00975"></a><span class="lineno"> 975</span>  }</div>
<div class="line"><a name="l00976"></a><span class="lineno"> 976</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l00977"></a><span class="lineno"> 977</span> }</div>
<div class="line"><a name="l00978"></a><span class="lineno"> 978</span>  </div>
<div class="line"><a name="l00979"></a><span class="lineno"> 979</span> <span class="comment">/* Create a query transmission ID that is unique for all outstanding queries */</span></div>
<div class="line"><a name="l00980"></a><span class="lineno"> 980</span> <span class="keyword">static</span> <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a></div>
<div class="line"><a name="l00981"></a><span class="lineno"> 981</span> dns_create_txid(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l00982"></a><span class="lineno"> 982</span> {</div>
<div class="line"><a name="l00983"></a><span class="lineno"> 983</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> txid;</div>
<div class="line"><a name="l00984"></a><span class="lineno"> 984</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> i;</div>
<div class="line"><a name="l00985"></a><span class="lineno"> 985</span>  </div>
<div class="line"><a name="l00986"></a><span class="lineno"> 986</span> again:</div>
<div class="line"><a name="l00987"></a><span class="lineno"> 987</span>  txid = (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)DNS_RAND_TXID();</div>
<div class="line"><a name="l00988"></a><span class="lineno"> 988</span>  </div>
<div class="line"><a name="l00989"></a><span class="lineno"> 989</span>  <span class="comment">/* check whether the ID is unique */</span></div>
<div class="line"><a name="l00990"></a><span class="lineno"> 990</span>  <span class="keywordflow">for</span> (i = 0; i < <a class="code" href="lwipopts_8h.html#a2384e76c1acdf969d883f3de08d340f7">DNS_TABLE_SIZE</a>; i++) {</div>
<div class="line"><a name="l00991"></a><span class="lineno"> 991</span>  <span class="keywordflow">if</span> ((dns_table[i].state == DNS_STATE_ASKING) &&</div>
<div class="line"><a name="l00992"></a><span class="lineno"> 992</span>  (dns_table[i].txid == txid)) {</div>
<div class="line"><a name="l00993"></a><span class="lineno"> 993</span>  <span class="comment">/* ID already used by another pending query */</span></div>
<div class="line"><a name="l00994"></a><span class="lineno"> 994</span>  <span class="keywordflow">goto</span> again;</div>
<div class="line"><a name="l00995"></a><span class="lineno"> 995</span>  }</div>
<div class="line"><a name="l00996"></a><span class="lineno"> 996</span>  }</div>
<div class="line"><a name="l00997"></a><span class="lineno"> 997</span>  </div>
<div class="line"><a name="l00998"></a><span class="lineno"> 998</span>  <span class="keywordflow">return</span> txid;</div>
<div class="line"><a name="l00999"></a><span class="lineno"> 999</span> }</div>
<div class="line"><a name="l01000"></a><span class="lineno"> 1000</span>  </div>
<div class="line"><a name="l01010"></a><span class="lineno"> 1010</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01011"></a><span class="lineno"> 1011</span> dns_check_entry(<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> i)</div>
<div class="line"><a name="l01012"></a><span class="lineno"> 1012</span> {</div>
<div class="line"><a name="l01013"></a><span class="lineno"> 1013</span>  <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> err;</div>
<div class="line"><a name="l01014"></a><span class="lineno"> 1014</span>  <span class="keyword">struct </span>dns_table_entry *entry = &dns_table[i];</div>
<div class="line"><a name="l01015"></a><span class="lineno"> 1015</span>  </div>
<div class="line"><a name="l01016"></a><span class="lineno"> 1016</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"array index out of bounds"</span>, i < <a class="code" href="lwipopts_8h.html#a2384e76c1acdf969d883f3de08d340f7">DNS_TABLE_SIZE</a>);</div>
<div class="line"><a name="l01017"></a><span class="lineno"> 1017</span>  </div>
<div class="line"><a name="l01018"></a><span class="lineno"> 1018</span>  <span class="keywordflow">switch</span> (entry->state) {</div>
<div class="line"><a name="l01019"></a><span class="lineno"> 1019</span>  <span class="keywordflow">case</span> DNS_STATE_NEW:</div>
<div class="line"><a name="l01020"></a><span class="lineno"> 1020</span>  <span class="comment">/* initialize new entry */</span></div>
<div class="line"><a name="l01021"></a><span class="lineno"> 1021</span>  entry->txid = dns_create_txid();</div>
<div class="line"><a name="l01022"></a><span class="lineno"> 1022</span>  entry->state = DNS_STATE_ASKING;</div>
<div class="line"><a name="l01023"></a><span class="lineno"> 1023</span>  entry->server_idx = 0;</div>
<div class="line"><a name="l01024"></a><span class="lineno"> 1024</span>  entry->tmr = 1;</div>
<div class="line"><a name="l01025"></a><span class="lineno"> 1025</span>  entry->retries = 0;</div>
<div class="line"><a name="l01026"></a><span class="lineno"> 1026</span>  </div>
<div class="line"><a name="l01027"></a><span class="lineno"> 1027</span>  <span class="comment">/* send DNS packet for this entry */</span></div>
<div class="line"><a name="l01028"></a><span class="lineno"> 1028</span>  err = dns_send(i);</div>
<div class="line"><a name="l01029"></a><span class="lineno"> 1029</span>  <span class="keywordflow">if</span> (err != <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>) {</div>
<div class="line"><a name="l01030"></a><span class="lineno"> 1030</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#aba55da2352c99d813767913e5e36be1f">DNS_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga77c491e468bf7d9a1bc48430c1866a96">LWIP_DBG_LEVEL_WARNING</a>,</div>
<div class="line"><a name="l01031"></a><span class="lineno"> 1031</span>  (<span class="stringliteral">"dns_send returned error: %s\n"</span>, <a class="code" href="err_8h.html#ab58c2561ad3b133e625183721b25ba27">lwip_strerr</a>(err)));</div>
<div class="line"><a name="l01032"></a><span class="lineno"> 1032</span>  }</div>
<div class="line"><a name="l01033"></a><span class="lineno"> 1033</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l01034"></a><span class="lineno"> 1034</span>  <span class="keywordflow">case</span> DNS_STATE_ASKING:</div>
<div class="line"><a name="l01035"></a><span class="lineno"> 1035</span>  <span class="keywordflow">if</span> (--entry->tmr == 0) {</div>
<div class="line"><a name="l01036"></a><span class="lineno"> 1036</span>  <span class="keywordflow">if</span> (++entry->retries == DNS_MAX_RETRIES) {</div>
<div class="line"><a name="l01037"></a><span class="lineno"> 1037</span>  <span class="keywordflow">if</span> ((entry->server_idx + 1 < <a class="code" href="lwipopts_8h.html#a9f9881c887a8aceb9765820c2dbdf292">DNS_MAX_SERVERS</a>) && !<a class="code" href="ip__addr_8h.html#acd8f5aa151cff966fd28368b85f38c05">ip_addr_isany_val</a>(dns_servers[entry->server_idx + 1])</div>
<div class="line"><a name="l01038"></a><span class="lineno"> 1038</span> #<span class="keywordflow">if</span> <a class="code" href="lwipopts_8h.html#afcbde5706a70ace562bd1f7d2d6f77cb">LWIP_DNS_SUPPORT_MDNS_QUERIES</a></div>
<div class="line"><a name="l01039"></a><span class="lineno"> 1039</span>  && !entry->is_mdns</div>
<div class="line"><a name="l01040"></a><span class="lineno"> 1040</span> #endif <span class="comment">/* LWIP_DNS_SUPPORT_MDNS_QUERIES */</span></div>
<div class="line"><a name="l01041"></a><span class="lineno"> 1041</span>  ) {</div>
<div class="line"><a name="l01042"></a><span class="lineno"> 1042</span>  <span class="comment">/* change of server */</span></div>
<div class="line"><a name="l01043"></a><span class="lineno"> 1043</span>  entry->server_idx++;</div>
<div class="line"><a name="l01044"></a><span class="lineno"> 1044</span>  entry->tmr = 1;</div>
<div class="line"><a name="l01045"></a><span class="lineno"> 1045</span>  entry->retries = 0;</div>
<div class="line"><a name="l01046"></a><span class="lineno"> 1046</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01047"></a><span class="lineno"> 1047</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#aba55da2352c99d813767913e5e36be1f">DNS_DEBUG</a>, (<span class="stringliteral">"dns_check_entry: \"%s\": timeout\n"</span>, entry->name));</div>
<div class="line"><a name="l01048"></a><span class="lineno"> 1048</span>  <span class="comment">/* call specified callback function if provided */</span></div>
<div class="line"><a name="l01049"></a><span class="lineno"> 1049</span>  dns_call_found(i, <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l01050"></a><span class="lineno"> 1050</span>  <span class="comment">/* flush this entry */</span></div>
<div class="line"><a name="l01051"></a><span class="lineno"> 1051</span>  entry->state = DNS_STATE_UNUSED;</div>
<div class="line"><a name="l01052"></a><span class="lineno"> 1052</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l01053"></a><span class="lineno"> 1053</span>  }</div>
<div class="line"><a name="l01054"></a><span class="lineno"> 1054</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01055"></a><span class="lineno"> 1055</span>  <span class="comment">/* wait longer for the next retry */</span></div>
<div class="line"><a name="l01056"></a><span class="lineno"> 1056</span>  entry->tmr = entry->retries;</div>
<div class="line"><a name="l01057"></a><span class="lineno"> 1057</span>  }</div>
<div class="line"><a name="l01058"></a><span class="lineno"> 1058</span>  </div>
<div class="line"><a name="l01059"></a><span class="lineno"> 1059</span>  <span class="comment">/* send DNS packet for this entry */</span></div>
<div class="line"><a name="l01060"></a><span class="lineno"> 1060</span>  err = dns_send(i);</div>
<div class="line"><a name="l01061"></a><span class="lineno"> 1061</span>  <span class="keywordflow">if</span> (err != <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>) {</div>
<div class="line"><a name="l01062"></a><span class="lineno"> 1062</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#aba55da2352c99d813767913e5e36be1f">DNS_DEBUG</a> | <a class="code" href="group__debugging__levels.html#ga77c491e468bf7d9a1bc48430c1866a96">LWIP_DBG_LEVEL_WARNING</a>,</div>
<div class="line"><a name="l01063"></a><span class="lineno"> 1063</span>  (<span class="stringliteral">"dns_send returned error: %s\n"</span>, <a class="code" href="err_8h.html#ab58c2561ad3b133e625183721b25ba27">lwip_strerr</a>(err)));</div>
<div class="line"><a name="l01064"></a><span class="lineno"> 1064</span>  }</div>
<div class="line"><a name="l01065"></a><span class="lineno"> 1065</span>  }</div>
<div class="line"><a name="l01066"></a><span class="lineno"> 1066</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l01067"></a><span class="lineno"> 1067</span>  <span class="keywordflow">case</span> DNS_STATE_DONE:</div>
<div class="line"><a name="l01068"></a><span class="lineno"> 1068</span>  <span class="comment">/* if the time to live is nul */</span></div>
<div class="line"><a name="l01069"></a><span class="lineno"> 1069</span>  <span class="keywordflow">if</span> ((entry->ttl == 0) || (--entry->ttl == 0)) {</div>
<div class="line"><a name="l01070"></a><span class="lineno"> 1070</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#aba55da2352c99d813767913e5e36be1f">DNS_DEBUG</a>, (<span class="stringliteral">"dns_check_entry: \"%s\": flush\n"</span>, entry->name));</div>
<div class="line"><a name="l01071"></a><span class="lineno"> 1071</span>  <span class="comment">/* flush this entry, there cannot be any related pending entries in this state */</span></div>
<div class="line"><a name="l01072"></a><span class="lineno"> 1072</span>  entry->state = DNS_STATE_UNUSED;</div>
<div class="line"><a name="l01073"></a><span class="lineno"> 1073</span>  }</div>
<div class="line"><a name="l01074"></a><span class="lineno"> 1074</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l01075"></a><span class="lineno"> 1075</span>  <span class="keywordflow">case</span> DNS_STATE_UNUSED:</div>
<div class="line"><a name="l01076"></a><span class="lineno"> 1076</span>  <span class="comment">/* nothing to do */</span></div>
<div class="line"><a name="l01077"></a><span class="lineno"> 1077</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l01078"></a><span class="lineno"> 1078</span>  <span class="keywordflow">default</span>:</div>
<div class="line"><a name="l01079"></a><span class="lineno"> 1079</span>  <a class="code" href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a>(<span class="stringliteral">"unknown dns_table entry state:"</span>, 0);</div>
<div class="line"><a name="l01080"></a><span class="lineno"> 1080</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l01081"></a><span class="lineno"> 1081</span>  }</div>
<div class="line"><a name="l01082"></a><span class="lineno"> 1082</span> }</div>
<div class="line"><a name="l01083"></a><span class="lineno"> 1083</span>  </div>
<div class="line"><a name="l01087"></a><span class="lineno"> 1087</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01088"></a><span class="lineno"> 1088</span> dns_check_entries(<span class="keywordtype">void</span>)</div>
<div class="line"><a name="l01089"></a><span class="lineno"> 1089</span> {</div>
<div class="line"><a name="l01090"></a><span class="lineno"> 1090</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> i;</div>
<div class="line"><a name="l01091"></a><span class="lineno"> 1091</span>  </div>
<div class="line"><a name="l01092"></a><span class="lineno"> 1092</span>  <span class="keywordflow">for</span> (i = 0; i < <a class="code" href="lwipopts_8h.html#a2384e76c1acdf969d883f3de08d340f7">DNS_TABLE_SIZE</a>; ++i) {</div>
<div class="line"><a name="l01093"></a><span class="lineno"> 1093</span>  dns_check_entry(i);</div>
<div class="line"><a name="l01094"></a><span class="lineno"> 1094</span>  }</div>
<div class="line"><a name="l01095"></a><span class="lineno"> 1095</span> }</div>
<div class="line"><a name="l01096"></a><span class="lineno"> 1096</span>  </div>
<div class="line"><a name="l01100"></a><span class="lineno"> 1100</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01101"></a><span class="lineno"> 1101</span> dns_correct_response(<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> idx, <a class="code" href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a> ttl)</div>
<div class="line"><a name="l01102"></a><span class="lineno"> 1102</span> {</div>
<div class="line"><a name="l01103"></a><span class="lineno"> 1103</span>  <span class="keyword">struct </span>dns_table_entry *entry = &dns_table[idx];</div>
<div class="line"><a name="l01104"></a><span class="lineno"> 1104</span>  </div>
<div class="line"><a name="l01105"></a><span class="lineno"> 1105</span>  entry->state = DNS_STATE_DONE;</div>
<div class="line"><a name="l01106"></a><span class="lineno"> 1106</span>  </div>
<div class="line"><a name="l01107"></a><span class="lineno"> 1107</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#aba55da2352c99d813767913e5e36be1f">DNS_DEBUG</a>, (<span class="stringliteral">"dns_recv: \"%s\": response = "</span>, entry->name));</div>
<div class="line"><a name="l01108"></a><span class="lineno"> 1108</span>  <a class="code" href="ip__addr_8h.html#af7d84bce2fb861a97f3047ecd69ab018">ip_addr_debug_print</a>(<a class="code" href="lwipopts_8h.html#aba55da2352c99d813767913e5e36be1f">DNS_DEBUG</a>, (&(entry->ipaddr)));</div>
<div class="line"><a name="l01109"></a><span class="lineno"> 1109</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#aba55da2352c99d813767913e5e36be1f">DNS_DEBUG</a>, (<span class="stringliteral">"\n"</span>));</div>
<div class="line"><a name="l01110"></a><span class="lineno"> 1110</span>  </div>
<div class="line"><a name="l01111"></a><span class="lineno"> 1111</span>  <span class="comment">/* read the answer resource record's TTL, and maximize it if needed */</span></div>
<div class="line"><a name="l01112"></a><span class="lineno"> 1112</span>  entry->ttl = ttl;</div>
<div class="line"><a name="l01113"></a><span class="lineno"> 1113</span>  <span class="keywordflow">if</span> (entry->ttl > DNS_MAX_TTL) {</div>
<div class="line"><a name="l01114"></a><span class="lineno"> 1114</span>  entry->ttl = DNS_MAX_TTL;</div>
<div class="line"><a name="l01115"></a><span class="lineno"> 1115</span>  }</div>
<div class="line"><a name="l01116"></a><span class="lineno"> 1116</span>  dns_call_found(idx, &entry->ipaddr);</div>
<div class="line"><a name="l01117"></a><span class="lineno"> 1117</span>  </div>
<div class="line"><a name="l01118"></a><span class="lineno"> 1118</span>  <span class="keywordflow">if</span> (entry->ttl == 0) {</div>
<div class="line"><a name="l01119"></a><span class="lineno"> 1119</span>  <span class="comment">/* RFC 883, page 29: "Zero values are</span></div>
<div class="line"><a name="l01120"></a><span class="lineno"> 1120</span> <span class="comment"> interpreted to mean that the RR can only be used for the</span></div>
<div class="line"><a name="l01121"></a><span class="lineno"> 1121</span> <span class="comment"> transaction in progress, and should not be cached."</span></div>
<div class="line"><a name="l01122"></a><span class="lineno"> 1122</span> <span class="comment"> -> flush this entry now */</span></div>
<div class="line"><a name="l01123"></a><span class="lineno"> 1123</span>  <span class="comment">/* entry reused during callback? */</span></div>
<div class="line"><a name="l01124"></a><span class="lineno"> 1124</span>  <span class="keywordflow">if</span> (entry->state == DNS_STATE_DONE) {</div>
<div class="line"><a name="l01125"></a><span class="lineno"> 1125</span>  entry->state = DNS_STATE_UNUSED;</div>
<div class="line"><a name="l01126"></a><span class="lineno"> 1126</span>  }</div>
<div class="line"><a name="l01127"></a><span class="lineno"> 1127</span>  }</div>
<div class="line"><a name="l01128"></a><span class="lineno"> 1128</span> }</div>
<div class="line"><a name="l01132"></a><span class="lineno"> 1132</span> <span class="keyword">static</span> <span class="keywordtype">void</span></div>
<div class="line"><a name="l01133"></a><span class="lineno"> 1133</span> dns_recv(<span class="keywordtype">void</span> *arg, <span class="keyword">struct</span> udp_pcb *pcb, <span class="keyword">struct</span> <a class="code" href="structpbuf.html">pbuf</a> *p, <span class="keyword">const</span> <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> *addr, <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> port)</div>
<div class="line"><a name="l01134"></a><span class="lineno"> 1134</span> {</div>
<div class="line"><a name="l01135"></a><span class="lineno"> 1135</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> i;</div>
<div class="line"><a name="l01136"></a><span class="lineno"> 1136</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> txid;</div>
<div class="line"><a name="l01137"></a><span class="lineno"> 1137</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> res_idx;</div>
<div class="line"><a name="l01138"></a><span class="lineno"> 1138</span>  <span class="keyword">struct </span><a class="code" href="structdns__hdr.html">dns_hdr</a> hdr;</div>
<div class="line"><a name="l01139"></a><span class="lineno"> 1139</span>  <span class="keyword">struct </span>dns_answer ans;</div>
<div class="line"><a name="l01140"></a><span class="lineno"> 1140</span>  <span class="keyword">struct </span>dns_query qry;</div>
<div class="line"><a name="l01141"></a><span class="lineno"> 1141</span>  <a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a> nquestions, nanswers;</div>
<div class="line"><a name="l01142"></a><span class="lineno"> 1142</span>  </div>
<div class="line"><a name="l01143"></a><span class="lineno"> 1143</span>  <a class="code" href="group__compiler__abstraction.html#ga70624a5deb8b9199406372a7f3603ecf">LWIP_UNUSED_ARG</a>(arg);</div>
<div class="line"><a name="l01144"></a><span class="lineno"> 1144</span>  <a class="code" href="group__compiler__abstraction.html#ga70624a5deb8b9199406372a7f3603ecf">LWIP_UNUSED_ARG</a>(pcb);</div>
<div class="line"><a name="l01145"></a><span class="lineno"> 1145</span>  <a class="code" href="group__compiler__abstraction.html#ga70624a5deb8b9199406372a7f3603ecf">LWIP_UNUSED_ARG</a>(port);</div>
<div class="line"><a name="l01146"></a><span class="lineno"> 1146</span>  </div>
<div class="line"><a name="l01147"></a><span class="lineno"> 1147</span>  <span class="comment">/* is the dns message big enough ? */</span></div>
<div class="line"><a name="l01148"></a><span class="lineno"> 1148</span>  <span class="keywordflow">if</span> (p-><a class="code" href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">tot_len</a> < (<a class="code" href="prot_2dns_8h.html#a1ffff846513e2493ba915d8874c26476">SIZEOF_DNS_HDR</a> + SIZEOF_DNS_QUERY)) {</div>
<div class="line"><a name="l01149"></a><span class="lineno"> 1149</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#aba55da2352c99d813767913e5e36be1f">DNS_DEBUG</a>, (<span class="stringliteral">"dns_recv: pbuf too small\n"</span>));</div>
<div class="line"><a name="l01150"></a><span class="lineno"> 1150</span>  <span class="comment">/* free pbuf and return */</span></div>
<div class="line"><a name="l01151"></a><span class="lineno"> 1151</span>  <span class="keywordflow">goto</span> memerr;</div>
<div class="line"><a name="l01152"></a><span class="lineno"> 1152</span>  }</div>
<div class="line"><a name="l01153"></a><span class="lineno"> 1153</span>  </div>
<div class="line"><a name="l01154"></a><span class="lineno"> 1154</span>  <span class="comment">/* copy dns payload inside static buffer for processing */</span></div>
<div class="line"><a name="l01155"></a><span class="lineno"> 1155</span>  <span class="keywordflow">if</span> (<a class="code" href="group__pbuf.html#gac2f1f58fd36042e82af46f5015720899">pbuf_copy_partial</a>(p, &hdr, <a class="code" href="prot_2dns_8h.html#a1ffff846513e2493ba915d8874c26476">SIZEOF_DNS_HDR</a>, 0) == <a class="code" href="prot_2dns_8h.html#a1ffff846513e2493ba915d8874c26476">SIZEOF_DNS_HDR</a>) {</div>
<div class="line"><a name="l01156"></a><span class="lineno"> 1156</span>  <span class="comment">/* Match the ID in the DNS header with the name table. */</span></div>
<div class="line"><a name="l01157"></a><span class="lineno"> 1157</span>  txid = <a class="code" href="def_8c.html#ad637280639de4066392e6b5614fa3e56">lwip_htons</a>(hdr.id);</div>
<div class="line"><a name="l01158"></a><span class="lineno"> 1158</span>  <span class="keywordflow">for</span> (i = 0; i < <a class="code" href="lwipopts_8h.html#a2384e76c1acdf969d883f3de08d340f7">DNS_TABLE_SIZE</a>; i++) {</div>
<div class="line"><a name="l01159"></a><span class="lineno"> 1159</span>  <span class="keyword">const</span> <span class="keyword">struct </span>dns_table_entry *entry = &dns_table[i];</div>
<div class="line"><a name="l01160"></a><span class="lineno"> 1160</span>  <span class="keywordflow">if</span> ((entry->state == DNS_STATE_ASKING) &&</div>
<div class="line"><a name="l01161"></a><span class="lineno"> 1161</span>  (entry->txid == txid)) {</div>
<div class="line"><a name="l01162"></a><span class="lineno"> 1162</span>  </div>
<div class="line"><a name="l01163"></a><span class="lineno"> 1163</span>  <span class="comment">/* We only care about the question(s) and the answers. The authrr</span></div>
<div class="line"><a name="l01164"></a><span class="lineno"> 1164</span> <span class="comment"> and the extrarr are simply discarded. */</span></div>
<div class="line"><a name="l01165"></a><span class="lineno"> 1165</span>  nquestions = <a class="code" href="def_8c.html#ad637280639de4066392e6b5614fa3e56">lwip_htons</a>(hdr.numquestions);</div>
<div class="line"><a name="l01166"></a><span class="lineno"> 1166</span>  nanswers = <a class="code" href="def_8c.html#ad637280639de4066392e6b5614fa3e56">lwip_htons</a>(hdr.numanswers);</div>
<div class="line"><a name="l01167"></a><span class="lineno"> 1167</span>  </div>
<div class="line"><a name="l01168"></a><span class="lineno"> 1168</span>  <span class="comment">/* Check for correct response. */</span></div>
<div class="line"><a name="l01169"></a><span class="lineno"> 1169</span>  <span class="keywordflow">if</span> ((hdr.flags1 & <a class="code" href="prot_2dns_8h.html#a96eb4534b574ece96ed36806039f73d3">DNS_FLAG1_RESPONSE</a>) == 0) {</div>
<div class="line"><a name="l01170"></a><span class="lineno"> 1170</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#aba55da2352c99d813767913e5e36be1f">DNS_DEBUG</a>, (<span class="stringliteral">"dns_recv: \"%s\": not a response\n"</span>, entry->name));</div>
<div class="line"><a name="l01171"></a><span class="lineno"> 1171</span>  <span class="keywordflow">goto</span> memerr; <span class="comment">/* ignore this packet */</span></div>
<div class="line"><a name="l01172"></a><span class="lineno"> 1172</span>  }</div>
<div class="line"><a name="l01173"></a><span class="lineno"> 1173</span>  <span class="keywordflow">if</span> (nquestions != 1) {</div>
<div class="line"><a name="l01174"></a><span class="lineno"> 1174</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#aba55da2352c99d813767913e5e36be1f">DNS_DEBUG</a>, (<span class="stringliteral">"dns_recv: \"%s\": response not match to query\n"</span>, entry->name));</div>
<div class="line"><a name="l01175"></a><span class="lineno"> 1175</span>  <span class="keywordflow">goto</span> memerr; <span class="comment">/* ignore this packet */</span></div>
<div class="line"><a name="l01176"></a><span class="lineno"> 1176</span>  }</div>
<div class="line"><a name="l01177"></a><span class="lineno"> 1177</span>  </div>
<div class="line"><a name="l01178"></a><span class="lineno"> 1178</span> <span class="preprocessor">#if LWIP_DNS_SUPPORT_MDNS_QUERIES</span></div>
<div class="line"><a name="l01179"></a><span class="lineno"> 1179</span>  <span class="keywordflow">if</span> (!entry->is_mdns)</div>
<div class="line"><a name="l01180"></a><span class="lineno"> 1180</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_DNS_SUPPORT_MDNS_QUERIES */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01181"></a><span class="lineno"> 1181</span>  {</div>
<div class="line"><a name="l01182"></a><span class="lineno"> 1182</span>  <span class="comment">/* Check whether response comes from the same network address to which the</span></div>
<div class="line"><a name="l01183"></a><span class="lineno"> 1183</span> <span class="comment"> question was sent. (RFC 5452) */</span></div>
<div class="line"><a name="l01184"></a><span class="lineno"> 1184</span>  <span class="keywordflow">if</span> (!<a class="code" href="ip__addr_8h.html#a008c9c92d770cc030ea054e6b259835a">ip_addr_cmp</a>(addr, &dns_servers[entry->server_idx])) {</div>
<div class="line"><a name="l01185"></a><span class="lineno"> 1185</span>  <span class="keywordflow">goto</span> memerr; <span class="comment">/* ignore this packet */</span></div>
<div class="line"><a name="l01186"></a><span class="lineno"> 1186</span>  }</div>
<div class="line"><a name="l01187"></a><span class="lineno"> 1187</span>  }</div>
<div class="line"><a name="l01188"></a><span class="lineno"> 1188</span>  </div>
<div class="line"><a name="l01189"></a><span class="lineno"> 1189</span>  <span class="comment">/* Check if the name in the "question" part match with the name in the entry and</span></div>
<div class="line"><a name="l01190"></a><span class="lineno"> 1190</span> <span class="comment"> skip it if equal. */</span></div>
<div class="line"><a name="l01191"></a><span class="lineno"> 1191</span>  res_idx = dns_compare_name(entry->name, p, <a class="code" href="prot_2dns_8h.html#a1ffff846513e2493ba915d8874c26476">SIZEOF_DNS_HDR</a>);</div>
<div class="line"><a name="l01192"></a><span class="lineno"> 1192</span>  <span class="keywordflow">if</span> (res_idx == 0xFFFF) {</div>
<div class="line"><a name="l01193"></a><span class="lineno"> 1193</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#aba55da2352c99d813767913e5e36be1f">DNS_DEBUG</a>, (<span class="stringliteral">"dns_recv: \"%s\": response not match to query\n"</span>, entry->name));</div>
<div class="line"><a name="l01194"></a><span class="lineno"> 1194</span>  <span class="keywordflow">goto</span> memerr; <span class="comment">/* ignore this packet */</span></div>
<div class="line"><a name="l01195"></a><span class="lineno"> 1195</span>  }</div>
<div class="line"><a name="l01196"></a><span class="lineno"> 1196</span>  </div>
<div class="line"><a name="l01197"></a><span class="lineno"> 1197</span>  <span class="comment">/* check if "question" part matches the request */</span></div>
<div class="line"><a name="l01198"></a><span class="lineno"> 1198</span>  <span class="keywordflow">if</span> (<a class="code" href="group__pbuf.html#gac2f1f58fd36042e82af46f5015720899">pbuf_copy_partial</a>(p, &qry, SIZEOF_DNS_QUERY, res_idx) != SIZEOF_DNS_QUERY) {</div>
<div class="line"><a name="l01199"></a><span class="lineno"> 1199</span>  <span class="keywordflow">goto</span> memerr; <span class="comment">/* ignore this packet */</span></div>
<div class="line"><a name="l01200"></a><span class="lineno"> 1200</span>  }</div>
<div class="line"><a name="l01201"></a><span class="lineno"> 1201</span>  <span class="keywordflow">if</span> ((qry.cls != <a class="code" href="def_8h.html#a0dfd02d7c09f9c698a5a7ecc0b7287ad">PP_HTONS</a>(<a class="code" href="prot_2dns_8h.html#a08bc1c1897d2921b6f102365be55da2a">DNS_RRCLASS_IN</a>)) ||</div>
<div class="line"><a name="l01202"></a><span class="lineno"> 1202</span>  (LWIP_DNS_ADDRTYPE_IS_IPV6(entry->reqaddrtype) && (qry.type != <a class="code" href="def_8h.html#a0dfd02d7c09f9c698a5a7ecc0b7287ad">PP_HTONS</a>(<a class="code" href="prot_2dns_8h.html#ae533fbb9f59f4de915ed3ecb9ff24953">DNS_RRTYPE_AAAA</a>))) ||</div>
<div class="line"><a name="l01203"></a><span class="lineno"> 1203</span>  (!LWIP_DNS_ADDRTYPE_IS_IPV6(entry->reqaddrtype) && (qry.type != <a class="code" href="def_8h.html#a0dfd02d7c09f9c698a5a7ecc0b7287ad">PP_HTONS</a>(<a class="code" href="prot_2dns_8h.html#a830e99420463950d3c4d661487f20d0d">DNS_RRTYPE_A</a>)))) {</div>
<div class="line"><a name="l01204"></a><span class="lineno"> 1204</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#aba55da2352c99d813767913e5e36be1f">DNS_DEBUG</a>, (<span class="stringliteral">"dns_recv: \"%s\": response not match to query\n"</span>, entry->name));</div>
<div class="line"><a name="l01205"></a><span class="lineno"> 1205</span>  <span class="keywordflow">goto</span> memerr; <span class="comment">/* ignore this packet */</span></div>
<div class="line"><a name="l01206"></a><span class="lineno"> 1206</span>  }</div>
<div class="line"><a name="l01207"></a><span class="lineno"> 1207</span>  <span class="comment">/* skip the rest of the "question" part */</span></div>
<div class="line"><a name="l01208"></a><span class="lineno"> 1208</span>  res_idx += SIZEOF_DNS_QUERY;</div>
<div class="line"><a name="l01209"></a><span class="lineno"> 1209</span>  </div>
<div class="line"><a name="l01210"></a><span class="lineno"> 1210</span>  <span class="comment">/* Check for error. If so, call callback to inform. */</span></div>
<div class="line"><a name="l01211"></a><span class="lineno"> 1211</span>  <span class="keywordflow">if</span> (hdr.flags2 & <a class="code" href="prot_2dns_8h.html#a9f6c329c04baba17fe0f5b2a6597d713">DNS_FLAG2_ERR_MASK</a>) {</div>
<div class="line"><a name="l01212"></a><span class="lineno"> 1212</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#aba55da2352c99d813767913e5e36be1f">DNS_DEBUG</a>, (<span class="stringliteral">"dns_recv: \"%s\": error in flags\n"</span>, entry->name));</div>
<div class="line"><a name="l01213"></a><span class="lineno"> 1213</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01214"></a><span class="lineno"> 1214</span>  <span class="keywordflow">while</span> ((nanswers > 0) && (res_idx < p->tot_len)) {</div>
<div class="line"><a name="l01215"></a><span class="lineno"> 1215</span>  <span class="comment">/* skip answer resource record's host name */</span></div>
<div class="line"><a name="l01216"></a><span class="lineno"> 1216</span>  res_idx = dns_skip_name(p, res_idx);</div>
<div class="line"><a name="l01217"></a><span class="lineno"> 1217</span>  <span class="keywordflow">if</span> (res_idx == 0xFFFF) {</div>
<div class="line"><a name="l01218"></a><span class="lineno"> 1218</span>  <span class="keywordflow">goto</span> memerr; <span class="comment">/* ignore this packet */</span></div>
<div class="line"><a name="l01219"></a><span class="lineno"> 1219</span>  }</div>
<div class="line"><a name="l01220"></a><span class="lineno"> 1220</span>  </div>
<div class="line"><a name="l01221"></a><span class="lineno"> 1221</span>  <span class="comment">/* Check for IP address type and Internet class. Others are discarded. */</span></div>
<div class="line"><a name="l01222"></a><span class="lineno"> 1222</span>  <span class="keywordflow">if</span> (<a class="code" href="group__pbuf.html#gac2f1f58fd36042e82af46f5015720899">pbuf_copy_partial</a>(p, &ans, SIZEOF_DNS_ANSWER, res_idx) != SIZEOF_DNS_ANSWER) {</div>
<div class="line"><a name="l01223"></a><span class="lineno"> 1223</span>  <span class="keywordflow">goto</span> memerr; <span class="comment">/* ignore this packet */</span></div>
<div class="line"><a name="l01224"></a><span class="lineno"> 1224</span>  }</div>
<div class="line"><a name="l01225"></a><span class="lineno"> 1225</span>  res_idx += SIZEOF_DNS_ANSWER;</div>
<div class="line"><a name="l01226"></a><span class="lineno"> 1226</span>  </div>
<div class="line"><a name="l01227"></a><span class="lineno"> 1227</span>  <span class="keywordflow">if</span> (ans.cls == <a class="code" href="def_8h.html#a0dfd02d7c09f9c698a5a7ecc0b7287ad">PP_HTONS</a>(<a class="code" href="prot_2dns_8h.html#a08bc1c1897d2921b6f102365be55da2a">DNS_RRCLASS_IN</a>)) {</div>
<div class="line"><a name="l01228"></a><span class="lineno"> 1228</span> <span class="preprocessor">#if LWIP_IPV4</span></div>
<div class="line"><a name="l01229"></a><span class="lineno"> 1229</span>  <span class="keywordflow">if</span> ((ans.type == <a class="code" href="def_8h.html#a0dfd02d7c09f9c698a5a7ecc0b7287ad">PP_HTONS</a>(<a class="code" href="prot_2dns_8h.html#a830e99420463950d3c4d661487f20d0d">DNS_RRTYPE_A</a>)) && (ans.len == <a class="code" href="def_8h.html#a0dfd02d7c09f9c698a5a7ecc0b7287ad">PP_HTONS</a>(<span class="keyword">sizeof</span>(ip4_addr_t)))) {</div>
<div class="line"><a name="l01230"></a><span class="lineno"> 1230</span> <span class="preprocessor">#if LWIP_IPV4 && LWIP_IPV6</span></div>
<div class="line"><a name="l01231"></a><span class="lineno"> 1231</span>  <span class="keywordflow">if</span> (!LWIP_DNS_ADDRTYPE_IS_IPV6(entry->reqaddrtype))</div>
<div class="line"><a name="l01232"></a><span class="lineno"> 1232</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV4 && LWIP_IPV6 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01233"></a><span class="lineno"> 1233</span>  {</div>
<div class="line"><a name="l01234"></a><span class="lineno"> 1234</span>  ip4_addr_t ip4addr;</div>
<div class="line"><a name="l01235"></a><span class="lineno"> 1235</span>  <span class="comment">/* read the IP address after answer resource record's header */</span></div>
<div class="line"><a name="l01236"></a><span class="lineno"> 1236</span>  <span class="keywordflow">if</span> (<a class="code" href="group__pbuf.html#gac2f1f58fd36042e82af46f5015720899">pbuf_copy_partial</a>(p, &ip4addr, <span class="keyword">sizeof</span>(ip4_addr_t), res_idx) != <span class="keyword">sizeof</span>(ip4_addr_t)) {</div>
<div class="line"><a name="l01237"></a><span class="lineno"> 1237</span>  <span class="keywordflow">goto</span> memerr; <span class="comment">/* ignore this packet */</span></div>
<div class="line"><a name="l01238"></a><span class="lineno"> 1238</span>  }</div>
<div class="line"><a name="l01239"></a><span class="lineno"> 1239</span>  ip_addr_copy_from_ip4(dns_table[i].ipaddr, ip4addr);</div>
<div class="line"><a name="l01240"></a><span class="lineno"> 1240</span>  <a class="code" href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a>(p);</div>
<div class="line"><a name="l01241"></a><span class="lineno"> 1241</span>  <span class="comment">/* handle correct response */</span></div>
<div class="line"><a name="l01242"></a><span class="lineno"> 1242</span>  dns_correct_response(i, <a class="code" href="def_8h.html#a56098407d66feb75806f655bafbee81d">lwip_ntohl</a>(ans.ttl));</div>
<div class="line"><a name="l01243"></a><span class="lineno"> 1243</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l01244"></a><span class="lineno"> 1244</span>  }</div>
<div class="line"><a name="l01245"></a><span class="lineno"> 1245</span>  }</div>
<div class="line"><a name="l01246"></a><span class="lineno"> 1246</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV4 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01247"></a><span class="lineno"> 1247</span> <span class="preprocessor">#if LWIP_IPV6</span></div>
<div class="line"><a name="l01248"></a><span class="lineno"> 1248</span>  <span class="keywordflow">if</span> ((ans.type == <a class="code" href="def_8h.html#a0dfd02d7c09f9c698a5a7ecc0b7287ad">PP_HTONS</a>(<a class="code" href="prot_2dns_8h.html#ae533fbb9f59f4de915ed3ecb9ff24953">DNS_RRTYPE_AAAA</a>)) && (ans.len == <a class="code" href="def_8h.html#a0dfd02d7c09f9c698a5a7ecc0b7287ad">PP_HTONS</a>(<span class="keyword">sizeof</span>(ip6_addr_t)))) {</div>
<div class="line"><a name="l01249"></a><span class="lineno"> 1249</span> <span class="preprocessor">#if LWIP_IPV4 && LWIP_IPV6</span></div>
<div class="line"><a name="l01250"></a><span class="lineno"> 1250</span>  <span class="keywordflow">if</span> (LWIP_DNS_ADDRTYPE_IS_IPV6(entry->reqaddrtype))</div>
<div class="line"><a name="l01251"></a><span class="lineno"> 1251</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV4 && LWIP_IPV6 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01252"></a><span class="lineno"> 1252</span>  {</div>
<div class="line"><a name="l01253"></a><span class="lineno"> 1253</span>  ip6_addr_t ip6addr;</div>
<div class="line"><a name="l01254"></a><span class="lineno"> 1254</span>  <span class="comment">/* read the IP address after answer resource record's header */</span></div>
<div class="line"><a name="l01255"></a><span class="lineno"> 1255</span>  <span class="keywordflow">if</span> (<a class="code" href="group__pbuf.html#gac2f1f58fd36042e82af46f5015720899">pbuf_copy_partial</a>(p, &ip6addr, <span class="keyword">sizeof</span>(ip6_addr_t), res_idx) != <span class="keyword">sizeof</span>(ip6_addr_t)) {</div>
<div class="line"><a name="l01256"></a><span class="lineno"> 1256</span>  <span class="keywordflow">goto</span> memerr; <span class="comment">/* ignore this packet */</span></div>
<div class="line"><a name="l01257"></a><span class="lineno"> 1257</span>  }</div>
<div class="line"><a name="l01258"></a><span class="lineno"> 1258</span>  <a class="code" href="ip__addr_8h.html#abe6f7908ce8a91dc587e2ebc2172e651">ip_addr_copy_from_ip6</a>(dns_table[i].ipaddr, ip6addr);</div>
<div class="line"><a name="l01259"></a><span class="lineno"> 1259</span>  <a class="code" href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a>(p);</div>
<div class="line"><a name="l01260"></a><span class="lineno"> 1260</span>  <span class="comment">/* handle correct response */</span></div>
<div class="line"><a name="l01261"></a><span class="lineno"> 1261</span>  dns_correct_response(i, <a class="code" href="def_8h.html#a56098407d66feb75806f655bafbee81d">lwip_ntohl</a>(ans.ttl));</div>
<div class="line"><a name="l01262"></a><span class="lineno"> 1262</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l01263"></a><span class="lineno"> 1263</span>  }</div>
<div class="line"><a name="l01264"></a><span class="lineno"> 1264</span>  }</div>
<div class="line"><a name="l01265"></a><span class="lineno"> 1265</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV6 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01266"></a><span class="lineno"> 1266</span>  }</div>
<div class="line"><a name="l01267"></a><span class="lineno"> 1267</span>  <span class="comment">/* skip this answer */</span></div>
<div class="line"><a name="l01268"></a><span class="lineno"> 1268</span>  <span class="keywordflow">if</span> ((<span class="keywordtype">int</span>)(res_idx + <a class="code" href="def_8c.html#ad637280639de4066392e6b5614fa3e56">lwip_htons</a>(ans.len)) > 0xFFFF) {</div>
<div class="line"><a name="l01269"></a><span class="lineno"> 1269</span>  <span class="keywordflow">goto</span> memerr; <span class="comment">/* ignore this packet */</span></div>
<div class="line"><a name="l01270"></a><span class="lineno"> 1270</span>  }</div>
<div class="line"><a name="l01271"></a><span class="lineno"> 1271</span>  res_idx += <a class="code" href="def_8c.html#ad637280639de4066392e6b5614fa3e56">lwip_htons</a>(ans.len);</div>
<div class="line"><a name="l01272"></a><span class="lineno"> 1272</span>  --nanswers;</div>
<div class="line"><a name="l01273"></a><span class="lineno"> 1273</span>  }</div>
<div class="line"><a name="l01274"></a><span class="lineno"> 1274</span> <span class="preprocessor">#if LWIP_IPV4 && LWIP_IPV6</span></div>
<div class="line"><a name="l01275"></a><span class="lineno"> 1275</span>  <span class="keywordflow">if</span> ((entry->reqaddrtype == LWIP_DNS_ADDRTYPE_IPV4_IPV6) ||</div>
<div class="line"><a name="l01276"></a><span class="lineno"> 1276</span>  (entry->reqaddrtype == LWIP_DNS_ADDRTYPE_IPV6_IPV4)) {</div>
<div class="line"><a name="l01277"></a><span class="lineno"> 1277</span>  <span class="keywordflow">if</span> (entry->reqaddrtype == LWIP_DNS_ADDRTYPE_IPV4_IPV6) {</div>
<div class="line"><a name="l01278"></a><span class="lineno"> 1278</span>  <span class="comment">/* IPv4 failed, try IPv6 */</span></div>
<div class="line"><a name="l01279"></a><span class="lineno"> 1279</span>  dns_table[i].reqaddrtype = LWIP_DNS_ADDRTYPE_IPV6;</div>
<div class="line"><a name="l01280"></a><span class="lineno"> 1280</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01281"></a><span class="lineno"> 1281</span>  <span class="comment">/* IPv6 failed, try IPv4 */</span></div>
<div class="line"><a name="l01282"></a><span class="lineno"> 1282</span>  dns_table[i].reqaddrtype = LWIP_DNS_ADDRTYPE_IPV4;</div>
<div class="line"><a name="l01283"></a><span class="lineno"> 1283</span>  }</div>
<div class="line"><a name="l01284"></a><span class="lineno"> 1284</span>  <a class="code" href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a>(p);</div>
<div class="line"><a name="l01285"></a><span class="lineno"> 1285</span>  dns_table[i].state = DNS_STATE_NEW;</div>
<div class="line"><a name="l01286"></a><span class="lineno"> 1286</span>  dns_check_entry(i);</div>
<div class="line"><a name="l01287"></a><span class="lineno"> 1287</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l01288"></a><span class="lineno"> 1288</span>  }</div>
<div class="line"><a name="l01289"></a><span class="lineno"> 1289</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV4 && LWIP_IPV6 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01290"></a><span class="lineno"> 1290</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#aba55da2352c99d813767913e5e36be1f">DNS_DEBUG</a>, (<span class="stringliteral">"dns_recv: \"%s\": error in response\n"</span>, entry->name));</div>
<div class="line"><a name="l01291"></a><span class="lineno"> 1291</span>  }</div>
<div class="line"><a name="l01292"></a><span class="lineno"> 1292</span>  <span class="comment">/* call callback to indicate error, clean up memory and return */</span></div>
<div class="line"><a name="l01293"></a><span class="lineno"> 1293</span>  <a class="code" href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a>(p);</div>
<div class="line"><a name="l01294"></a><span class="lineno"> 1294</span>  dns_call_found(i, <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>);</div>
<div class="line"><a name="l01295"></a><span class="lineno"> 1295</span>  dns_table[i].state = DNS_STATE_UNUSED;</div>
<div class="line"><a name="l01296"></a><span class="lineno"> 1296</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l01297"></a><span class="lineno"> 1297</span>  }</div>
<div class="line"><a name="l01298"></a><span class="lineno"> 1298</span>  }</div>
<div class="line"><a name="l01299"></a><span class="lineno"> 1299</span>  }</div>
<div class="line"><a name="l01300"></a><span class="lineno"> 1300</span>  </div>
<div class="line"><a name="l01301"></a><span class="lineno"> 1301</span> memerr:</div>
<div class="line"><a name="l01302"></a><span class="lineno"> 1302</span>  <span class="comment">/* deallocate memory and return */</span></div>
<div class="line"><a name="l01303"></a><span class="lineno"> 1303</span>  <a class="code" href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a>(p);</div>
<div class="line"><a name="l01304"></a><span class="lineno"> 1304</span>  <span class="keywordflow">return</span>;</div>
<div class="line"><a name="l01305"></a><span class="lineno"> 1305</span> }</div>
<div class="line"><a name="l01306"></a><span class="lineno"> 1306</span>  </div>
<div class="line"><a name="l01316"></a><span class="lineno"> 1316</span> <span class="keyword">static</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l01317"></a><span class="lineno"> 1317</span> dns_enqueue(<span class="keyword">const</span> <span class="keywordtype">char</span> *<a class="code" href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>, <span class="keywordtype">size_t</span> hostnamelen, dns_found_callback found,</div>
<div class="line"><a name="l01318"></a><span class="lineno"> 1318</span>  <span class="keywordtype">void</span> *callback_arg LWIP_DNS_ADDRTYPE_ARG(<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> dns_addrtype) LWIP_DNS_ISMDNS_ARG(<a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> is_mdns))</div>
<div class="line"><a name="l01319"></a><span class="lineno"> 1319</span> {</div>
<div class="line"><a name="l01320"></a><span class="lineno"> 1320</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> i;</div>
<div class="line"><a name="l01321"></a><span class="lineno"> 1321</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> lseq, lseqi;</div>
<div class="line"><a name="l01322"></a><span class="lineno"> 1322</span>  <span class="keyword">struct </span>dns_table_entry *entry = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l01323"></a><span class="lineno"> 1323</span>  <span class="keywordtype">size_t</span> namelen;</div>
<div class="line"><a name="l01324"></a><span class="lineno"> 1324</span>  <span class="keyword">struct </span>dns_req_entry* req;</div>
<div class="line"><a name="l01325"></a><span class="lineno"> 1325</span>  </div>
<div class="line"><a name="l01326"></a><span class="lineno"> 1326</span> <span class="preprocessor">#if ((LWIP_DNS_SECURE & LWIP_DNS_SECURE_NO_MULTIPLE_OUTSTANDING) != 0)</span></div>
<div class="line"><a name="l01327"></a><span class="lineno"> 1327</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> r;</div>
<div class="line"><a name="l01328"></a><span class="lineno"> 1328</span>  <span class="comment">/* check for duplicate entries */</span></div>
<div class="line"><a name="l01329"></a><span class="lineno"> 1329</span>  <span class="keywordflow">for</span> (i = 0; i < <a class="code" href="lwipopts_8h.html#a2384e76c1acdf969d883f3de08d340f7">DNS_TABLE_SIZE</a>; i++) {</div>
<div class="line"><a name="l01330"></a><span class="lineno"> 1330</span>  <span class="keywordflow">if</span> ((dns_table[i].state == DNS_STATE_ASKING) &&</div>
<div class="line"><a name="l01331"></a><span class="lineno"> 1331</span>  (<a class="code" href="group__sys__nonstandard.html#ga997dcc49451121d4ed755b33bc7bd26a">lwip_strnicmp</a>(<a class="code" href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>, dns_table[i].<a class="code" href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>, <span class="keyword">sizeof</span>(dns_table[i].<a class="code" href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>)) == 0)) {</div>
<div class="line"><a name="l01332"></a><span class="lineno"> 1332</span> <span class="preprocessor">#if LWIP_IPV4 && LWIP_IPV6</span></div>
<div class="line"><a name="l01333"></a><span class="lineno"> 1333</span>  <span class="keywordflow">if</span> (dns_table[i].reqaddrtype != dns_addrtype) {</div>
<div class="line"><a name="l01334"></a><span class="lineno"> 1334</span>  <span class="comment">/* requested address types don't match</span></div>
<div class="line"><a name="l01335"></a><span class="lineno"> 1335</span> <span class="comment"> this can lead to 2 concurrent requests, but mixing the address types</span></div>
<div class="line"><a name="l01336"></a><span class="lineno"> 1336</span> <span class="comment"> for the same host should not be that common */</span></div>
<div class="line"><a name="l01337"></a><span class="lineno"> 1337</span>  <span class="keywordflow">continue</span>;</div>
<div class="line"><a name="l01338"></a><span class="lineno"> 1338</span>  }</div>
<div class="line"><a name="l01339"></a><span class="lineno"> 1339</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV4 && LWIP_IPV6 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01340"></a><span class="lineno"> 1340</span>  <span class="comment">/* this is a duplicate entry, find a free request entry */</span></div>
<div class="line"><a name="l01341"></a><span class="lineno"> 1341</span>  <span class="keywordflow">for</span> (r = 0; r < DNS_MAX_REQUESTS; r++) {</div>
<div class="line"><a name="l01342"></a><span class="lineno"> 1342</span>  <span class="keywordflow">if</span> (dns_requests[r].found == 0) {</div>
<div class="line"><a name="l01343"></a><span class="lineno"> 1343</span>  dns_requests[r].found = found;</div>
<div class="line"><a name="l01344"></a><span class="lineno"> 1344</span>  dns_requests[r].arg = callback_arg;</div>
<div class="line"><a name="l01345"></a><span class="lineno"> 1345</span>  dns_requests[r].dns_table_idx = i;</div>
<div class="line"><a name="l01346"></a><span class="lineno"> 1346</span>  LWIP_DNS_SET_ADDRTYPE(dns_requests[r].reqaddrtype, dns_addrtype);</div>
<div class="line"><a name="l01347"></a><span class="lineno"> 1347</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#aba55da2352c99d813767913e5e36be1f">DNS_DEBUG</a>, (<span class="stringliteral">"dns_enqueue: \"%s\": duplicate request\n"</span>, <a class="code" href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>));</div>
<div class="line"><a name="l01348"></a><span class="lineno"> 1348</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadca13e1dd0edca8a27b6abdf1524bde7929">ERR_INPROGRESS</a>;</div>
<div class="line"><a name="l01349"></a><span class="lineno"> 1349</span>  }</div>
<div class="line"><a name="l01350"></a><span class="lineno"> 1350</span>  }</div>
<div class="line"><a name="l01351"></a><span class="lineno"> 1351</span>  }</div>
<div class="line"><a name="l01352"></a><span class="lineno"> 1352</span>  }</div>
<div class="line"><a name="l01353"></a><span class="lineno"> 1353</span>  <span class="comment">/* no duplicate entries found */</span></div>
<div class="line"><a name="l01354"></a><span class="lineno"> 1354</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l01355"></a><span class="lineno"> 1355</span>  </div>
<div class="line"><a name="l01356"></a><span class="lineno"> 1356</span>  <span class="comment">/* search an unused entry, or the oldest one */</span></div>
<div class="line"><a name="l01357"></a><span class="lineno"> 1357</span>  lseq = 0;</div>
<div class="line"><a name="l01358"></a><span class="lineno"> 1358</span>  lseqi = <a class="code" href="lwipopts_8h.html#a2384e76c1acdf969d883f3de08d340f7">DNS_TABLE_SIZE</a>;</div>
<div class="line"><a name="l01359"></a><span class="lineno"> 1359</span>  <span class="keywordflow">for</span> (i = 0; i < <a class="code" href="lwipopts_8h.html#a2384e76c1acdf969d883f3de08d340f7">DNS_TABLE_SIZE</a>; ++i) {</div>
<div class="line"><a name="l01360"></a><span class="lineno"> 1360</span>  entry = &dns_table[i];</div>
<div class="line"><a name="l01361"></a><span class="lineno"> 1361</span>  <span class="comment">/* is it an unused entry ? */</span></div>
<div class="line"><a name="l01362"></a><span class="lineno"> 1362</span>  <span class="keywordflow">if</span> (entry->state == DNS_STATE_UNUSED) {</div>
<div class="line"><a name="l01363"></a><span class="lineno"> 1363</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l01364"></a><span class="lineno"> 1364</span>  }</div>
<div class="line"><a name="l01365"></a><span class="lineno"> 1365</span>  <span class="comment">/* check if this is the oldest completed entry */</span></div>
<div class="line"><a name="l01366"></a><span class="lineno"> 1366</span>  <span class="keywordflow">if</span> (entry->state == DNS_STATE_DONE) {</div>
<div class="line"><a name="l01367"></a><span class="lineno"> 1367</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> age = dns_seqno - entry->seqno;</div>
<div class="line"><a name="l01368"></a><span class="lineno"> 1368</span>  <span class="keywordflow">if</span> (age > lseq) {</div>
<div class="line"><a name="l01369"></a><span class="lineno"> 1369</span>  lseq = age;</div>
<div class="line"><a name="l01370"></a><span class="lineno"> 1370</span>  lseqi = i;</div>
<div class="line"><a name="l01371"></a><span class="lineno"> 1371</span>  }</div>
<div class="line"><a name="l01372"></a><span class="lineno"> 1372</span>  }</div>
<div class="line"><a name="l01373"></a><span class="lineno"> 1373</span>  }</div>
<div class="line"><a name="l01374"></a><span class="lineno"> 1374</span>  </div>
<div class="line"><a name="l01375"></a><span class="lineno"> 1375</span>  <span class="comment">/* if we don't have found an unused entry, use the oldest completed one */</span></div>
<div class="line"><a name="l01376"></a><span class="lineno"> 1376</span>  <span class="keywordflow">if</span> (i == <a class="code" href="lwipopts_8h.html#a2384e76c1acdf969d883f3de08d340f7">DNS_TABLE_SIZE</a>) {</div>
<div class="line"><a name="l01377"></a><span class="lineno"> 1377</span>  <span class="keywordflow">if</span> ((lseqi >= <a class="code" href="lwipopts_8h.html#a2384e76c1acdf969d883f3de08d340f7">DNS_TABLE_SIZE</a>) || (dns_table[lseqi].state != DNS_STATE_DONE)) {</div>
<div class="line"><a name="l01378"></a><span class="lineno"> 1378</span>  <span class="comment">/* no entry can be used now, table is full */</span></div>
<div class="line"><a name="l01379"></a><span class="lineno"> 1379</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#aba55da2352c99d813767913e5e36be1f">DNS_DEBUG</a>, (<span class="stringliteral">"dns_enqueue: \"%s\": DNS entries table is full\n"</span>, <a class="code" href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>));</div>
<div class="line"><a name="l01380"></a><span class="lineno"> 1380</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaaaeafdbf3aecc46864daa3cd829c7e05">ERR_MEM</a>;</div>
<div class="line"><a name="l01381"></a><span class="lineno"> 1381</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01382"></a><span class="lineno"> 1382</span>  <span class="comment">/* use the oldest completed one */</span></div>
<div class="line"><a name="l01383"></a><span class="lineno"> 1383</span>  i = lseqi;</div>
<div class="line"><a name="l01384"></a><span class="lineno"> 1384</span>  entry = &dns_table[i];</div>
<div class="line"><a name="l01385"></a><span class="lineno"> 1385</span>  }</div>
<div class="line"><a name="l01386"></a><span class="lineno"> 1386</span>  }</div>
<div class="line"><a name="l01387"></a><span class="lineno"> 1387</span>  </div>
<div class="line"><a name="l01388"></a><span class="lineno"> 1388</span> <span class="preprocessor">#if ((LWIP_DNS_SECURE & LWIP_DNS_SECURE_NO_MULTIPLE_OUTSTANDING) != 0)</span></div>
<div class="line"><a name="l01389"></a><span class="lineno"> 1389</span>  <span class="comment">/* find a free request entry */</span></div>
<div class="line"><a name="l01390"></a><span class="lineno"> 1390</span>  req = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l01391"></a><span class="lineno"> 1391</span>  <span class="keywordflow">for</span> (r = 0; r < DNS_MAX_REQUESTS; r++) {</div>
<div class="line"><a name="l01392"></a><span class="lineno"> 1392</span>  <span class="keywordflow">if</span> (dns_requests[r].found == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01393"></a><span class="lineno"> 1393</span>  req = &dns_requests[r];</div>
<div class="line"><a name="l01394"></a><span class="lineno"> 1394</span>  <span class="keywordflow">break</span>;</div>
<div class="line"><a name="l01395"></a><span class="lineno"> 1395</span>  }</div>
<div class="line"><a name="l01396"></a><span class="lineno"> 1396</span>  }</div>
<div class="line"><a name="l01397"></a><span class="lineno"> 1397</span>  <span class="keywordflow">if</span> (req == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01398"></a><span class="lineno"> 1398</span>  <span class="comment">/* no request entry can be used now, table is full */</span></div>
<div class="line"><a name="l01399"></a><span class="lineno"> 1399</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#aba55da2352c99d813767913e5e36be1f">DNS_DEBUG</a>, (<span class="stringliteral">"dns_enqueue: \"%s\": DNS request entries table is full\n"</span>, <a class="code" href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>));</div>
<div class="line"><a name="l01400"></a><span class="lineno"> 1400</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaaaeafdbf3aecc46864daa3cd829c7e05">ERR_MEM</a>;</div>
<div class="line"><a name="l01401"></a><span class="lineno"> 1401</span>  }</div>
<div class="line"><a name="l01402"></a><span class="lineno"> 1402</span>  req->dns_table_idx = i;</div>
<div class="line"><a name="l01403"></a><span class="lineno"> 1403</span> <span class="preprocessor">#else</span></div>
<div class="line"><a name="l01404"></a><span class="lineno"> 1404</span>  <span class="comment">/* in this configuration, the entry index is the same as the request index */</span></div>
<div class="line"><a name="l01405"></a><span class="lineno"> 1405</span>  req = &dns_requests[i];</div>
<div class="line"><a name="l01406"></a><span class="lineno"> 1406</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l01407"></a><span class="lineno"> 1407</span>  </div>
<div class="line"><a name="l01408"></a><span class="lineno"> 1408</span>  <span class="comment">/* use this entry */</span></div>
<div class="line"><a name="l01409"></a><span class="lineno"> 1409</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#aba55da2352c99d813767913e5e36be1f">DNS_DEBUG</a>, (<span class="stringliteral">"dns_enqueue: \"%s\": use DNS entry %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">"\n"</span>, <a class="code" href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>, (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)(i)));</div>
<div class="line"><a name="l01410"></a><span class="lineno"> 1410</span>  </div>
<div class="line"><a name="l01411"></a><span class="lineno"> 1411</span>  <span class="comment">/* fill the entry */</span></div>
<div class="line"><a name="l01412"></a><span class="lineno"> 1412</span>  entry->state = DNS_STATE_NEW;</div>
<div class="line"><a name="l01413"></a><span class="lineno"> 1413</span>  entry->seqno = dns_seqno;</div>
<div class="line"><a name="l01414"></a><span class="lineno"> 1414</span>  LWIP_DNS_SET_ADDRTYPE(entry->reqaddrtype, dns_addrtype);</div>
<div class="line"><a name="l01415"></a><span class="lineno"> 1415</span>  LWIP_DNS_SET_ADDRTYPE(req->reqaddrtype, dns_addrtype);</div>
<div class="line"><a name="l01416"></a><span class="lineno"> 1416</span>  req->found = found;</div>
<div class="line"><a name="l01417"></a><span class="lineno"> 1417</span>  req->arg = callback_arg;</div>
<div class="line"><a name="l01418"></a><span class="lineno"> 1418</span>  namelen = <a class="code" href="def_8h.html#a748f5df614a3fc989e8900fd229d6e4e">LWIP_MIN</a>(hostnamelen, <a class="code" href="lwipopts_8h.html#a3b01c79902063c170ef57deb72f56124">DNS_MAX_NAME_LENGTH</a>-1);</div>
<div class="line"><a name="l01419"></a><span class="lineno"> 1419</span>  <a class="code" href="lwipopts_8h.html#aa1dd57a66b6de8c0593e9e3e8d1411f6">MEMCPY</a>(entry->name, <a class="code" href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>, namelen);</div>
<div class="line"><a name="l01420"></a><span class="lineno"> 1420</span>  entry->name[namelen] = 0;</div>
<div class="line"><a name="l01421"></a><span class="lineno"> 1421</span>  </div>
<div class="line"><a name="l01422"></a><span class="lineno"> 1422</span> <span class="preprocessor">#if ((LWIP_DNS_SECURE & LWIP_DNS_SECURE_RAND_SRC_PORT) != 0)</span></div>
<div class="line"><a name="l01423"></a><span class="lineno"> 1423</span>  entry->pcb_idx = dns_alloc_pcb();</div>
<div class="line"><a name="l01424"></a><span class="lineno"> 1424</span>  <span class="keywordflow">if</span> (entry->pcb_idx >= DNS_MAX_SOURCE_PORTS) {</div>
<div class="line"><a name="l01425"></a><span class="lineno"> 1425</span>  <span class="comment">/* failed to get a UDP pcb */</span></div>
<div class="line"><a name="l01426"></a><span class="lineno"> 1426</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#aba55da2352c99d813767913e5e36be1f">DNS_DEBUG</a>, (<span class="stringliteral">"dns_enqueue: \"%s\": failed to allocate a pcb\n"</span>, <a class="code" href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>));</div>
<div class="line"><a name="l01427"></a><span class="lineno"> 1427</span>  entry->state = DNS_STATE_UNUSED;</div>
<div class="line"><a name="l01428"></a><span class="lineno"> 1428</span>  req->found = <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>;</div>
<div class="line"><a name="l01429"></a><span class="lineno"> 1429</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaaaeafdbf3aecc46864daa3cd829c7e05">ERR_MEM</a>;</div>
<div class="line"><a name="l01430"></a><span class="lineno"> 1430</span>  }</div>
<div class="line"><a name="l01431"></a><span class="lineno"> 1431</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#aba55da2352c99d813767913e5e36be1f">DNS_DEBUG</a>, (<span class="stringliteral">"dns_enqueue: \"%s\": use DNS pcb %"</span><a class="code" href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a><span class="stringliteral">"\n"</span>, <a class="code" href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a>, (<a class="code" href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a>)(entry->pcb_idx)));</div>
<div class="line"><a name="l01432"></a><span class="lineno"> 1432</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l01433"></a><span class="lineno"> 1433</span>  </div>
<div class="line"><a name="l01434"></a><span class="lineno"> 1434</span> <span class="preprocessor">#if LWIP_DNS_SUPPORT_MDNS_QUERIES</span></div>
<div class="line"><a name="l01435"></a><span class="lineno"> 1435</span>  entry->is_mdns = is_mdns;</div>
<div class="line"><a name="l01436"></a><span class="lineno"> 1436</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l01437"></a><span class="lineno"> 1437</span>  </div>
<div class="line"><a name="l01438"></a><span class="lineno"> 1438</span>  dns_seqno++;</div>
<div class="line"><a name="l01439"></a><span class="lineno"> 1439</span>  </div>
<div class="line"><a name="l01440"></a><span class="lineno"> 1440</span>  <span class="comment">/* force to send query without waiting timer */</span></div>
<div class="line"><a name="l01441"></a><span class="lineno"> 1441</span>  dns_check_entry(i);</div>
<div class="line"><a name="l01442"></a><span class="lineno"> 1442</span>  </div>
<div class="line"><a name="l01443"></a><span class="lineno"> 1443</span>  <span class="comment">/* dns query is enqueued */</span></div>
<div class="line"><a name="l01444"></a><span class="lineno"> 1444</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadca13e1dd0edca8a27b6abdf1524bde7929">ERR_INPROGRESS</a>;</div>
<div class="line"><a name="l01445"></a><span class="lineno"> 1445</span> }</div>
<div class="line"><a name="l01446"></a><span class="lineno"> 1446</span>  </div>
<div class="line"><a name="l01467"></a><span class="lineno"> 1467</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l01468"></a><span class="lineno"> 1468</span> dns_gethostbyname(<span class="keyword">const</span> <span class="keywordtype">char</span> *hostname, <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> *addr, dns_found_callback found,</div>
<div class="line"><a name="l01469"></a><span class="lineno"> 1469</span>  <span class="keywordtype">void</span> *callback_arg)</div>
<div class="line"><a name="l01470"></a><span class="lineno"> 1470</span> {</div>
<div class="line"><a name="l01471"></a><span class="lineno"> 1471</span>  <span class="keywordflow">return</span> dns_gethostbyname_addrtype(hostname, addr, found, callback_arg, LWIP_DNS_ADDRTYPE_DEFAULT);</div>
<div class="line"><a name="l01472"></a><span class="lineno"> 1472</span> }</div>
<div class="line"><a name="l01473"></a><span class="lineno"> 1473</span>  </div>
<div class="line"><a name="l01488"></a><span class="lineno"> 1488</span> <a class="code" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div>
<div class="line"><a name="l01489"></a><span class="lineno"> 1489</span> dns_gethostbyname_addrtype(<span class="keyword">const</span> <span class="keywordtype">char</span> *hostname, <a class="code" href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a> *addr, dns_found_callback found,</div>
<div class="line"><a name="l01490"></a><span class="lineno"> 1490</span>  <span class="keywordtype">void</span> *callback_arg, <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> dns_addrtype)</div>
<div class="line"><a name="l01491"></a><span class="lineno"> 1491</span> {</div>
<div class="line"><a name="l01492"></a><span class="lineno"> 1492</span>  <span class="keywordtype">size_t</span> hostnamelen;</div>
<div class="line"><a name="l01493"></a><span class="lineno"> 1493</span> <span class="preprocessor">#if LWIP_DNS_SUPPORT_MDNS_QUERIES</span></div>
<div class="line"><a name="l01494"></a><span class="lineno"> 1494</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> is_mdns;</div>
<div class="line"><a name="l01495"></a><span class="lineno"> 1495</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l01496"></a><span class="lineno"> 1496</span>  <span class="comment">/* not initialized or no valid server yet, or invalid addr pointer</span></div>
<div class="line"><a name="l01497"></a><span class="lineno"> 1497</span> <span class="comment"> * or invalid hostname or invalid hostname length */</span></div>
<div class="line"><a name="l01498"></a><span class="lineno"> 1498</span>  <span class="keywordflow">if</span> ((addr == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) ||</div>
<div class="line"><a name="l01499"></a><span class="lineno"> 1499</span>  (!hostname) || (!hostname[0])) {</div>
<div class="line"><a name="l01500"></a><span class="lineno"> 1500</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcab508ce0ebdf3ca735208b00a80a45c91">ERR_ARG</a>;</div>
<div class="line"><a name="l01501"></a><span class="lineno"> 1501</span>  }</div>
<div class="line"><a name="l01502"></a><span class="lineno"> 1502</span> <span class="preprocessor">#if ((LWIP_DNS_SECURE & LWIP_DNS_SECURE_RAND_SRC_PORT) == 0)</span></div>
<div class="line"><a name="l01503"></a><span class="lineno"> 1503</span>  <span class="keywordflow">if</span> (dns_pcbs[0] == <a class="code" href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a>) {</div>
<div class="line"><a name="l01504"></a><span class="lineno"> 1504</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcab508ce0ebdf3ca735208b00a80a45c91">ERR_ARG</a>;</div>
<div class="line"><a name="l01505"></a><span class="lineno"> 1505</span>  }</div>
<div class="line"><a name="l01506"></a><span class="lineno"> 1506</span> <span class="preprocessor">#endif</span></div>
<div class="line"><a name="l01507"></a><span class="lineno"> 1507</span>  hostnamelen = <a class="code" href="lib_8h.html#ae6c8de953239811a34eeeab09458e55e">strlen</a>(hostname);</div>
<div class="line"><a name="l01508"></a><span class="lineno"> 1508</span>  <span class="keywordflow">if</span> (hostnamelen >= <a class="code" href="lwipopts_8h.html#a3b01c79902063c170ef57deb72f56124">DNS_MAX_NAME_LENGTH</a>) {</div>
<div class="line"><a name="l01509"></a><span class="lineno"> 1509</span>  <a class="code" href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a>(<a class="code" href="lwipopts_8h.html#aba55da2352c99d813767913e5e36be1f">DNS_DEBUG</a>, (<span class="stringliteral">"dns_gethostbyname: name too long to resolve"</span>));</div>
<div class="line"><a name="l01510"></a><span class="lineno"> 1510</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcab508ce0ebdf3ca735208b00a80a45c91">ERR_ARG</a>;</div>
<div class="line"><a name="l01511"></a><span class="lineno"> 1511</span>  }</div>
<div class="line"><a name="l01512"></a><span class="lineno"> 1512</span>  </div>
<div class="line"><a name="l01513"></a><span class="lineno"> 1513</span>  </div>
<div class="line"><a name="l01514"></a><span class="lineno"> 1514</span> <span class="preprocessor">#if LWIP_HAVE_LOOPIF</span></div>
<div class="line"><a name="l01515"></a><span class="lineno"> 1515</span>  <span class="keywordflow">if</span> (<a class="code" href="string_8h.html#a6f3dcb20ff11ff9db5904c3cfb61a38c">strcmp</a>(hostname, <span class="stringliteral">"localhost"</span>) == 0) {</div>
<div class="line"><a name="l01516"></a><span class="lineno"> 1516</span>  <a class="code" href="ip__addr_8h.html#a8f9d56ac85cd87338a1823e4a58ba1da">ip_addr_set_loopback</a>(LWIP_DNS_ADDRTYPE_IS_IPV6(dns_addrtype), addr);</div>
<div class="line"><a name="l01517"></a><span class="lineno"> 1517</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l01518"></a><span class="lineno"> 1518</span>  }</div>
<div class="line"><a name="l01519"></a><span class="lineno"> 1519</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_HAVE_LOOPIF */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01520"></a><span class="lineno"> 1520</span>  </div>
<div class="line"><a name="l01521"></a><span class="lineno"> 1521</span>  <span class="comment">/* host name already in octet notation? set ip addr and return ERR_OK */</span></div>
<div class="line"><a name="l01522"></a><span class="lineno"> 1522</span>  <span class="keywordflow">if</span> (<a class="code" href="ip__addr_8h.html#a9b9fae6ad88a288c3c6da050644e2a48">ipaddr_aton</a>(hostname, addr)) {</div>
<div class="line"><a name="l01523"></a><span class="lineno"> 1523</span> <span class="preprocessor">#if LWIP_IPV4 && LWIP_IPV6</span></div>
<div class="line"><a name="l01524"></a><span class="lineno"> 1524</span>  <span class="keywordflow">if</span> ((<a class="code" href="ip__addr_8h.html#a9bac7e938757f1d24df2404e8b57cb7d">IP_IS_V6</a>(addr) && (dns_addrtype != LWIP_DNS_ADDRTYPE_IPV4)) ||</div>
<div class="line"><a name="l01525"></a><span class="lineno"> 1525</span>  (<a class="code" href="ip__addr_8h.html#abee5dab2191bb0f3355d7f30d1496f24">IP_IS_V4</a>(addr) && (dns_addrtype != LWIP_DNS_ADDRTYPE_IPV6)))</div>
<div class="line"><a name="l01526"></a><span class="lineno"> 1526</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV4 && LWIP_IPV6 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01527"></a><span class="lineno"> 1527</span>  {</div>
<div class="line"><a name="l01528"></a><span class="lineno"> 1528</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l01529"></a><span class="lineno"> 1529</span>  }</div>
<div class="line"><a name="l01530"></a><span class="lineno"> 1530</span>  }</div>
<div class="line"><a name="l01531"></a><span class="lineno"> 1531</span>  <span class="comment">/* already have this address cached? */</span></div>
<div class="line"><a name="l01532"></a><span class="lineno"> 1532</span>  <span class="keywordflow">if</span> (dns_lookup(hostname, addr LWIP_DNS_ADDRTYPE_ARG(dns_addrtype)) == <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>) {</div>
<div class="line"><a name="l01533"></a><span class="lineno"> 1533</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l01534"></a><span class="lineno"> 1534</span>  }</div>
<div class="line"><a name="l01535"></a><span class="lineno"> 1535</span> <span class="preprocessor">#if LWIP_IPV4 && LWIP_IPV6</span></div>
<div class="line"><a name="l01536"></a><span class="lineno"> 1536</span>  <span class="keywordflow">if</span> ((dns_addrtype == LWIP_DNS_ADDRTYPE_IPV4_IPV6) || (dns_addrtype == LWIP_DNS_ADDRTYPE_IPV6_IPV4)) {</div>
<div class="line"><a name="l01537"></a><span class="lineno"> 1537</span>  <span class="comment">/* fallback to 2nd IP type and try again to lookup */</span></div>
<div class="line"><a name="l01538"></a><span class="lineno"> 1538</span>  <a class="code" href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> fallback;</div>
<div class="line"><a name="l01539"></a><span class="lineno"> 1539</span>  <span class="keywordflow">if</span> (dns_addrtype == LWIP_DNS_ADDRTYPE_IPV4_IPV6) {</div>
<div class="line"><a name="l01540"></a><span class="lineno"> 1540</span>  fallback = LWIP_DNS_ADDRTYPE_IPV6;</div>
<div class="line"><a name="l01541"></a><span class="lineno"> 1541</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01542"></a><span class="lineno"> 1542</span>  fallback = LWIP_DNS_ADDRTYPE_IPV4;</div>
<div class="line"><a name="l01543"></a><span class="lineno"> 1543</span>  }</div>
<div class="line"><a name="l01544"></a><span class="lineno"> 1544</span>  <span class="keywordflow">if</span> (dns_lookup(hostname, addr LWIP_DNS_ADDRTYPE_ARG(fallback)) == <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>) {</div>
<div class="line"><a name="l01545"></a><span class="lineno"> 1545</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a>;</div>
<div class="line"><a name="l01546"></a><span class="lineno"> 1546</span>  }</div>
<div class="line"><a name="l01547"></a><span class="lineno"> 1547</span>  }</div>
<div class="line"><a name="l01548"></a><span class="lineno"> 1548</span> <span class="preprocessor">#else </span><span class="comment">/* LWIP_IPV4 && LWIP_IPV6 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01549"></a><span class="lineno"> 1549</span>  <a class="code" href="group__compiler__abstraction.html#ga70624a5deb8b9199406372a7f3603ecf">LWIP_UNUSED_ARG</a>(dns_addrtype);</div>
<div class="line"><a name="l01550"></a><span class="lineno"> 1550</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_IPV4 && LWIP_IPV6 */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01551"></a><span class="lineno"> 1551</span>  </div>
<div class="line"><a name="l01552"></a><span class="lineno"> 1552</span> <span class="preprocessor">#if LWIP_DNS_SUPPORT_MDNS_QUERIES</span></div>
<div class="line"><a name="l01553"></a><span class="lineno"> 1553</span>  <span class="keywordflow">if</span> (<a class="code" href="string_8h.html#adcec9a82a6a276e8edb0fd4fc26fe8f2">strstr</a>(hostname, <span class="stringliteral">".local"</span>) == &hostname[hostnamelen] - 6) {</div>
<div class="line"><a name="l01554"></a><span class="lineno"> 1554</span>  is_mdns = 1;</div>
<div class="line"><a name="l01555"></a><span class="lineno"> 1555</span>  } <span class="keywordflow">else</span> {</div>
<div class="line"><a name="l01556"></a><span class="lineno"> 1556</span>  is_mdns = 0;</div>
<div class="line"><a name="l01557"></a><span class="lineno"> 1557</span>  }</div>
<div class="line"><a name="l01558"></a><span class="lineno"> 1558</span>  </div>
<div class="line"><a name="l01559"></a><span class="lineno"> 1559</span>  <span class="keywordflow">if</span> (!is_mdns)</div>
<div class="line"><a name="l01560"></a><span class="lineno"> 1560</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_DNS_SUPPORT_MDNS_QUERIES */</span><span class="preprocessor"></span></div>
<div class="line"><a name="l01561"></a><span class="lineno"> 1561</span>  {</div>
<div class="line"><a name="l01562"></a><span class="lineno"> 1562</span>  <span class="comment">/* prevent calling found callback if no server is set, return error instead */</span></div>
<div class="line"><a name="l01563"></a><span class="lineno"> 1563</span>  <span class="keywordflow">if</span> (<a class="code" href="ip__addr_8h.html#acd8f5aa151cff966fd28368b85f38c05">ip_addr_isany_val</a>(dns_servers[0])) {</div>
<div class="line"><a name="l01564"></a><span class="lineno"> 1564</span>  <span class="keywordflow">return</span> <a class="code" href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a>;</div>
<div class="line"><a name="l01565"></a><span class="lineno"> 1565</span>  }</div>
<div class="line"><a name="l01566"></a><span class="lineno"> 1566</span>  }</div>
<div class="line"><a name="l01567"></a><span class="lineno"> 1567</span>  </div>
<div class="line"><a name="l01568"></a><span class="lineno"> 1568</span>  <span class="comment">/* queue query with specified callback */</span></div>
<div class="line"><a name="l01569"></a><span class="lineno"> 1569</span>  <span class="keywordflow">return</span> dns_enqueue(hostname, hostnamelen, found, callback_arg LWIP_DNS_ADDRTYPE_ARG(dns_addrtype)</div>
<div class="line"><a name="l01570"></a><span class="lineno"> 1570</span>  LWIP_DNS_ISMDNS_ARG(is_mdns));</div>
<div class="line"><a name="l01571"></a><span class="lineno"> 1571</span> }</div>
<div class="line"><a name="l01572"></a><span class="lineno"> 1572</span>  </div>
<div class="line"><a name="l01573"></a><span class="lineno"> 1573</span> <span class="preprocessor">#endif </span><span class="comment">/* LWIP_DNS */</span><span class="preprocessor"></span></div>
</div><!-- fragment --></div><!-- contents -->
</div><!-- doc-content -->
<div class="ttc" id="alwipopts_8h_html_a9f9881c887a8aceb9765820c2dbdf292"><div class="ttname"><a href="lwipopts_8h.html#a9f9881c887a8aceb9765820c2dbdf292">DNS_MAX_SERVERS</a></div><div class="ttdeci">#define DNS_MAX_SERVERS</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00160">lwipopts.h:160</a></div></div>
<div class="ttc" id="agroup__pbuf_html_ga839f342803b0cf89049744124c5a98ad"><div class="ttname"><a href="group__pbuf.html#ga839f342803b0cf89049744124c5a98ad">pbuf_try_get_at</a></div><div class="ttdeci">int pbuf_try_get_at(const struct pbuf *p, u16_t offset)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l01318">pbuf.c:1318</a></div></div>
<div class="ttc" id="aprot_2dns_8h_html_a9266b48706648ecf0625a3e651095317"><div class="ttname"><a href="prot_2dns_8h.html#a9266b48706648ecf0625a3e651095317">DNS_SERVER_PORT</a></div><div class="ttdeci">#define DNS_SERVER_PORT</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dns_8h_source.html#l00051">dns.h:51</a></div></div>
<div class="ttc" id="agroup__sys__nonstandard_html_ga997dcc49451121d4ed755b33bc7bd26a"><div class="ttname"><a href="group__sys__nonstandard.html#ga997dcc49451121d4ed755b33bc7bd26a">lwip_strnicmp</a></div><div class="ttdeci">int lwip_strnicmp(const char *str1, const char *str2, size_t len)</div><div class="ttdef"><b>Definition:</b> <a href="def_8c_source.html#l00161">def.c:161</a></div></div>
<div class="ttc" id="aopt_8h_html"><div class="ttname"><a href="opt_8h.html">opt.h</a></div></div>
<div class="ttc" id="aip__addr_8h_html_a008c9c92d770cc030ea054e6b259835a"><div class="ttname"><a href="ip__addr_8h.html#a008c9c92d770cc030ea054e6b259835a">ip_addr_cmp</a></div><div class="ttdeci">#define ip_addr_cmp(addr1, addr2)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00316">ip_addr.h:316</a></div></div>
<div class="ttc" id="aip__addr_8h_html_a9bac7e938757f1d24df2404e8b57cb7d"><div class="ttname"><a href="ip__addr_8h.html#a9bac7e938757f1d24df2404e8b57cb7d">IP_IS_V6</a></div><div class="ttdeci">#define IP_IS_V6(ipaddr)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00296">ip_addr.h:296</a></div></div>
<div class="ttc" id="alwipopts_8h_html_a3b01c79902063c170ef57deb72f56124"><div class="ttname"><a href="lwipopts_8h.html#a3b01c79902063c170ef57deb72f56124">DNS_MAX_NAME_LENGTH</a></div><div class="ttdeci">#define DNS_MAX_NAME_LENGTH</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00159">lwipopts.h:159</a></div></div>
<div class="ttc" id="aprot_2dns_8h_html_a9f6c329c04baba17fe0f5b2a6597d713"><div class="ttname"><a href="prot_2dns_8h.html#a9f6c329c04baba17fe0f5b2a6597d713">DNS_FLAG2_ERR_MASK</a></div><div class="ttdeci">#define DNS_FLAG2_ERR_MASK</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dns_8h_source.html#l00092">dns.h:92</a></div></div>
<div class="ttc" id="adef_8h_html"><div class="ttname"><a href="def_8h.html">def.h</a></div></div>
<div class="ttc" id="aip__addr_8h_html_abee5dab2191bb0f3355d7f30d1496f24"><div class="ttname"><a href="ip__addr_8h.html#abee5dab2191bb0f3355d7f30d1496f24">IP_IS_V4</a></div><div class="ttdeci">#define IP_IS_V4(ipaddr)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00295">ip_addr.h:295</a></div></div>
<div class="ttc" id="aprot_2dns_8h_html_ae533fbb9f59f4de915ed3ecb9ff24953"><div class="ttname"><a href="prot_2dns_8h.html#ae533fbb9f59f4de915ed3ecb9ff24953">DNS_RRTYPE_AAAA</a></div><div class="ttdeci">#define DNS_RRTYPE_AAAA</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dns_8h_source.html#l00071">dns.h:71</a></div></div>
<div class="ttc" id="aip__addr_8h_html_a1578e34703e86711a7fb7dcc3857004d"><div class="ttname"><a href="ip__addr_8h.html#a1578e34703e86711a7fb7dcc3857004d">IP_IS_V6_VAL</a></div><div class="ttdeci">#define IP_IS_V6_VAL(ipaddr)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00294">ip_addr.h:294</a></div></div>
<div class="ttc" id="adebug_8h_html_a94ad086267808462beae2b38f91996ed"><div class="ttname"><a href="debug_8h.html#a94ad086267808462beae2b38f91996ed">LWIP_ASSERT</a></div><div class="ttdeci">#define LWIP_ASSERT(message, assertion)</div><div class="ttdef"><b>Definition:</b> <a href="debug_8h_source.html#l00116">debug.h:116</a></div></div>
<div class="ttc" id="aprot_2dns_8h_html_a830e99420463950d3c4d661487f20d0d"><div class="ttname"><a href="prot_2dns_8h.html#a830e99420463950d3c4d661487f20d0d">DNS_RRTYPE_A</a></div><div class="ttdeci">#define DNS_RRTYPE_A</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dns_8h_source.html#l00055">dns.h:55</a></div></div>
<div class="ttc" id="agroup__compiler__abstraction_html_ga77570ac4fcab86864fa1916e55676da2"><div class="ttname"><a href="group__compiler__abstraction.html#ga77570ac4fcab86864fa1916e55676da2">u16_t</a></div><div class="ttdeci">uint16_t u16_t</div><div class="ttdef"><b>Definition:</b> <a href="arch_8h_source.html#l00124">arch.h:124</a></div></div>
<div class="ttc" id="astring_8h_html"><div class="ttname"><a href="string_8h.html">string.h</a></div></div>
<div class="ttc" id="adef_8h_html_a4abb61f4c9339d8a0a0c63b4fbfe6a37"><div class="ttname"><a href="def_8h.html#a4abb61f4c9339d8a0a0c63b4fbfe6a37">LWIP_ARRAYSIZE</a></div><div class="ttdeci">#define LWIP_ARRAYSIZE(x)</div><div class="ttdef"><b>Definition:</b> <a href="def_8h_source.html#l00058">def.h:58</a></div></div>
<div class="ttc" id="aip__addr_8h_html_a8f9d56ac85cd87338a1823e4a58ba1da"><div class="ttname"><a href="ip__addr_8h.html#a8f9d56ac85cd87338a1823e4a58ba1da">ip_addr_set_loopback</a></div><div class="ttdeci">#define ip_addr_set_loopback(is_ipv6, ipaddr)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00312">ip_addr.h:312</a></div></div>
<div class="ttc" id="astructpbuf_html_a5259e7ec29bab9c0999b64f2e86b411f"><div class="ttname"><a href="structpbuf.html#a5259e7ec29bab9c0999b64f2e86b411f">pbuf::tot_len</a></div><div class="ttdeci">u16_t tot_len</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00156">pbuf.h:156</a></div></div>
<div class="ttc" id="alwipopts_8h_html_afcbde5706a70ace562bd1f7d2d6f77cb"><div class="ttname"><a href="lwipopts_8h.html#afcbde5706a70ace562bd1f7d2d6f77cb">LWIP_DNS_SUPPORT_MDNS_QUERIES</a></div><div class="ttdeci">#define LWIP_DNS_SUPPORT_MDNS_QUERIES</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00165">lwipopts.h:165</a></div></div>
<div class="ttc" id="aip__addr_8h_html_abe43b154533b73585c4e58f568370ede"><div class="ttname"><a href="ip__addr_8h.html#abe43b154533b73585c4e58f568370ede">IP_ANY_TYPE</a></div><div class="ttdeci">#define IP_ANY_TYPE</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00400">ip_addr.h:400</a></div></div>
<div class="ttc" id="astring_8h_html_a6f3dcb20ff11ff9db5904c3cfb61a38c"><div class="ttname"><a href="string_8h.html#a6f3dcb20ff11ff9db5904c3cfb61a38c">strcmp</a></div><div class="ttdeci">int strcmp(const char *str1, const char *str2)</div></div>
<div class="ttc" id="agroup__compiler__abstraction_html_ga4c14294869aceba3ef9d4c0c302d0f33"><div class="ttname"><a href="group__compiler__abstraction.html#ga4c14294869aceba3ef9d4c0c302d0f33">u32_t</a></div><div class="ttdeci">uint32_t u32_t</div><div class="ttdef"><b>Definition:</b> <a href="arch_8h_source.html#l00126">arch.h:126</a></div></div>
<div class="ttc" id="agroup__pbuf_html_gad1e31e370271335b197272af2724ca85"><div class="ttname"><a href="group__pbuf.html#gad1e31e370271335b197272af2724ca85">pbuf_take</a></div><div class="ttdeci">err_t pbuf_take(struct pbuf *buf, const void *dataptr, u16_t len)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l01150">pbuf.c:1150</a></div></div>
<div class="ttc" id="aprot_2dns_8h_html_a861fa0ab623ace9086f5c7247a9f04c8"><div class="ttname"><a href="prot_2dns_8h.html#a861fa0ab623ace9086f5c7247a9f04c8">DNS_MQUERY_IPV4_GROUP_INIT</a></div><div class="ttdeci">#define DNS_MQUERY_IPV4_GROUP_INIT</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dns_8h_source.html#l00128">dns.h:128</a></div></div>
<div class="ttc" id="agroup__pbuf_html_ggaee1baa59bb2f85ba575b5a8619ac1ebfa2ded3594a3977f8bf9cf09552be327b5"><div class="ttname"><a href="group__pbuf.html#ggaee1baa59bb2f85ba575b5a8619ac1ebfa2ded3594a3977f8bf9cf09552be327b5">PBUF_TRANSPORT</a></div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00076">pbuf.h:76</a></div></div>
<div class="ttc" id="agroup__pbuf_html_gab0dd696fb4b6bc65e548944584f1738b"><div class="ttname"><a href="group__pbuf.html#gab0dd696fb4b6bc65e548944584f1738b">pbuf_free</a></div><div class="ttdeci">u8_t pbuf_free(struct pbuf *p)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l00715">pbuf.c:715</a></div></div>
<div class="ttc" id="alib_8h_html_ae6c8de953239811a34eeeab09458e55e"><div class="ttname"><a href="lib_8h.html#ae6c8de953239811a34eeeab09458e55e">strlen</a></div><div class="ttdeci">int strlen(const char *str)</div><div class="ttdef"><b>Definition:</b> <a href="strlen_8c_source.html#l00055">strlen.c:55</a></div></div>
<div class="ttc" id="alwipopts_8h_html_a2384e76c1acdf969d883f3de08d340f7"><div class="ttname"><a href="lwipopts_8h.html#a2384e76c1acdf969d883f3de08d340f7">DNS_TABLE_SIZE</a></div><div class="ttdeci">#define DNS_TABLE_SIZE</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00158">lwipopts.h:158</a></div></div>
<div class="ttc" id="amemp_8h_html_a2b00593d086313c267b54a976bf67aa5"><div class="ttname"><a href="memp_8h.html#a2b00593d086313c267b54a976bf67aa5">memp_malloc</a></div><div class="ttdeci">void * memp_malloc(memp_t type)</div><div class="ttdef"><b>Definition:</b> <a href="memp_8c_source.html#l00385">memp.c:385</a></div></div>
<div class="ttc" id="aprot_2dns_8h_html_a1ffff846513e2493ba915d8874c26476"><div class="ttname"><a href="prot_2dns_8h.html#a1ffff846513e2493ba915d8874c26476">SIZEOF_DNS_HDR</a></div><div class="ttdeci">#define SIZEOF_DNS_HDR</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dns_8h_source.html#l00116">dns.h:116</a></div></div>
<div class="ttc" id="aprot_2dns_8h_html_a62d67af5ac6c6b3f98a6566a42564276"><div class="ttname"><a href="prot_2dns_8h.html#a62d67af5ac6c6b3f98a6566a42564276">DNS_MQUERY_PORT</a></div><div class="ttdeci">#define DNS_MQUERY_PORT</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dns_8h_source.html#l00123">dns.h:123</a></div></div>
<div class="ttc" id="adef_8h_html_a748f5df614a3fc989e8900fd229d6e4e"><div class="ttname"><a href="def_8h.html#a748f5df614a3fc989e8900fd229d6e4e">LWIP_MIN</a></div><div class="ttdeci">#define LWIP_MIN(x, y)</div><div class="ttdef"><b>Definition:</b> <a href="def_8h_source.html#l00055">def.h:55</a></div></div>
<div class="ttc" id="amemp_8h_html_aecd94926b7c2a0e23ae195f4ae97581f"><div class="ttname"><a href="memp_8h.html#aecd94926b7c2a0e23ae195f4ae97581f">memp_free</a></div><div class="ttdeci">void memp_free(memp_t type, void *mem)</div><div class="ttdef"><b>Definition:</b> <a href="memp_8c_source.html#l00469">memp.c:469</a></div></div>
<div class="ttc" id="aip__addr_8h_html_acd8f5aa151cff966fd28368b85f38c05"><div class="ttname"><a href="ip__addr_8h.html#acd8f5aa151cff966fd28368b85f38c05">ip_addr_isany_val</a></div><div class="ttdeci">#define ip_addr_isany_val(ipaddr)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00318">ip_addr.h:318</a></div></div>
<div class="ttc" id="aip__addr_8h_html_af7d84bce2fb861a97f3047ecd69ab018"><div class="ttname"><a href="ip__addr_8h.html#af7d84bce2fb861a97f3047ecd69ab018">ip_addr_debug_print</a></div><div class="ttdeci">#define ip_addr_debug_print(debug, ipaddr)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00323">ip_addr.h:323</a></div></div>
<div class="ttc" id="agroup__infrastructure__errors_html_ggae2e66c7d13afc90ffecd6151680fbadca13e1dd0edca8a27b6abdf1524bde7929"><div class="ttname"><a href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadca13e1dd0edca8a27b6abdf1524bde7929">ERR_INPROGRESS</a></div><div class="ttdef"><b>Definition:</b> <a href="err_8h_source.html#l00073">err.h:73</a></div></div>
<div class="ttc" id="agroup__infrastructure__errors_html_ggae2e66c7d13afc90ffecd6151680fbadcaaaeafdbf3aecc46864daa3cd829c7e05"><div class="ttname"><a href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaaaeafdbf3aecc46864daa3cd829c7e05">ERR_MEM</a></div><div class="ttdef"><b>Definition:</b> <a href="err_8h_source.html#l00065">err.h:65</a></div></div>
<div class="ttc" id="agroup__pbuf_html_gac2f1f58fd36042e82af46f5015720899"><div class="ttname"><a href="group__pbuf.html#gac2f1f58fd36042e82af46f5015720899">pbuf_copy_partial</a></div><div class="ttdeci">u16_t pbuf_copy_partial(const struct pbuf *p, void *dataptr, u16_t len, u16_t offset)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l01016">pbuf.c:1016</a></div></div>
<div class="ttc" id="adef_8h_html_a56098407d66feb75806f655bafbee81d"><div class="ttname"><a href="def_8h.html#a56098407d66feb75806f655bafbee81d">lwip_ntohl</a></div><div class="ttdeci">#define lwip_ntohl(x)</div><div class="ttdef"><b>Definition:</b> <a href="def_8h_source.html#l00078">def.h:78</a></div></div>
<div class="ttc" id="agroup__pbuf_html_gacfcb0a2af918658ba0afe36499c65f47"><div class="ttname"><a href="group__pbuf.html#gacfcb0a2af918658ba0afe36499c65f47">pbuf_alloc</a></div><div class="ttdeci">struct pbuf * pbuf_alloc(pbuf_layer l, u16_t length, pbuf_type type)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l00248">pbuf.c:248</a></div></div>
<div class="ttc" id="agroup__compiler__abstraction_html_ga4caecabca98b43919dd11be1c0d4cd8e"><div class="ttname"><a href="group__compiler__abstraction.html#ga4caecabca98b43919dd11be1c0d4cd8e">u8_t</a></div><div class="ttdeci">uint8_t u8_t</div><div class="ttdef"><b>Definition:</b> <a href="arch_8h_source.html#l00122">arch.h:122</a></div></div>
<div class="ttc" id="aip__addr_8h_html_a88b43639738c4de2d3cd22e3a1fd7696"><div class="ttname"><a href="ip__addr_8h.html#a88b43639738c4de2d3cd22e3a1fd7696">ip_addr_t</a></div><div class="ttdeci">ip6_addr_t ip_addr_t</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00290">ip_addr.h:290</a></div></div>
<div class="ttc" id="aip__addr_8h_html_a9b9fae6ad88a288c3c6da050644e2a48"><div class="ttname"><a href="ip__addr_8h.html#a9b9fae6ad88a288c3c6da050644e2a48">ipaddr_aton</a></div><div class="ttdeci">#define ipaddr_aton(cp, addr)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00327">ip_addr.h:327</a></div></div>
<div class="ttc" id="agroup__infrastructure__errors_html_ggae2e66c7d13afc90ffecd6151680fbadcab508ce0ebdf3ca735208b00a80a45c91"><div class="ttname"><a href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcab508ce0ebdf3ca735208b00a80a45c91">ERR_ARG</a></div><div class="ttdef"><b>Definition:</b> <a href="err_8h_source.html#l00096">err.h:96</a></div></div>
<div class="ttc" id="agroup__compiler__abstraction_html_ga70624a5deb8b9199406372a7f3603ecf"><div class="ttname"><a href="group__compiler__abstraction.html#ga70624a5deb8b9199406372a7f3603ecf">LWIP_UNUSED_ARG</a></div><div class="ttdeci">#define LWIP_UNUSED_ARG(x)</div><div class="ttdef"><b>Definition:</b> <a href="arch_8h_source.html#l00315">arch.h:315</a></div></div>
<div class="ttc" id="aprot_2dns_8h_html_a72d99b1623afa14bd58c667b748c2ddc"><div class="ttname"><a href="prot_2dns_8h.html#a72d99b1623afa14bd58c667b748c2ddc">DNS_FLAG1_RD</a></div><div class="ttdeci">#define DNS_FLAG1_RD</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dns_8h_source.html#l00090">dns.h:90</a></div></div>
<div class="ttc" id="agroup__pbuf_html_gae1cf2bf7454ff87ff377b0b2262f9b44"><div class="ttname"><a href="group__pbuf.html#gae1cf2bf7454ff87ff377b0b2262f9b44">pbuf_take_at</a></div><div class="ttdeci">err_t pbuf_take_at(struct pbuf *buf, const void *dataptr, u16_t len, u16_t offset)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l01194">pbuf.c:1194</a></div></div>
<div class="ttc" id="adef_8c_html_ad637280639de4066392e6b5614fa3e56"><div class="ttname"><a href="def_8c.html#ad637280639de4066392e6b5614fa3e56">lwip_htons</a></div><div class="ttdeci">u16_t lwip_htons(u16_t n)</div><div class="ttdef"><b>Definition:</b> <a href="def_8c_source.html#l00075">def.c:75</a></div></div>
<div class="ttc" id="agroup__pbuf_html_ggab7e0e32fcc292c0d7107721766ed92fbac5e9f28455bca98944a030d4b84ecfab"><div class="ttname"><a href="group__pbuf.html#ggab7e0e32fcc292c0d7107721766ed92fbac5e9f28455bca98944a030d4b84ecfab">PBUF_RAM</a></div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00108">pbuf.h:108</a></div></div>
<div class="ttc" id="agroup__compiler__abstraction_html_gaa9d7f6eb2ee9fcc5eda3545dbb1886e0"><div class="ttname"><a href="group__compiler__abstraction.html#gaa9d7f6eb2ee9fcc5eda3545dbb1886e0">U16_F</a></div><div class="ttdeci">#define U16_F</div><div class="ttdef"><b>Definition:</b> <a href="arch_8h_source.html#l00148">arch.h:148</a></div></div>
<div class="ttc" id="aip__addr_8h_html_abe6f7908ce8a91dc587e2ebc2172e651"><div class="ttname"><a href="ip__addr_8h.html#abe6f7908ce8a91dc587e2ebc2172e651">ip_addr_copy_from_ip6</a></div><div class="ttdeci">#define ip_addr_copy_from_ip6(dest, src)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00306">ip_addr.h:306</a></div></div>
<div class="ttc" id="agroup__infrastructure__errors_html_ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb"><div class="ttname"><a href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa26c163b80b1f6786ca81dadc14b00fb">ERR_OK</a></div><div class="ttdef"><b>Definition:</b> <a href="err_8h_source.html#l00063">err.h:63</a></div></div>
<div class="ttc" id="agroup__infrastructure__errors_html_gaf02d9da80fd66b4f986d2c53d7231ddb"><div class="ttname"><a href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a></div><div class="ttdeci">s8_t err_t</div><div class="ttdef"><b>Definition:</b> <a href="err_8h_source.html#l00057">err.h:57</a></div></div>
<div class="ttc" id="apci_8c_html_a8f8f80d37794cde9472343e4487ba3eb"><div class="ttname"><a href="pci_8c.html#a8f8f80d37794cde9472343e4487ba3eb">name</a></div><div class="ttdeci">const char * name</div><div class="ttdef"><b>Definition:</b> <a href="pci_8c_source.html#l00037">pci.c:37</a></div></div>
<div class="ttc" id="aip__addr_8h_html_a77a933975db287f6aa5c2e70249ba18f"><div class="ttname"><a href="ip__addr_8h.html#a77a933975db287f6aa5c2e70249ba18f">ip_addr_copy</a></div><div class="ttdeci">#define ip_addr_copy(dest, src)</div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00305">ip_addr.h:305</a></div></div>
<div class="ttc" id="audp_8h_html"><div class="ttname"><a href="udp_8h.html">udp.h</a></div></div>
<div class="ttc" id="agroup__sys__nonstandard_html_ga263cbafcb697eff964139a9998a6668a"><div class="ttname"><a href="group__sys__nonstandard.html#ga263cbafcb697eff964139a9998a6668a">lwip_stricmp</a></div><div class="ttdeci">int lwip_stricmp(const char *str1, const char *str2)</div><div class="ttdef"><b>Definition:</b> <a href="def_8c_source.html#l00126">def.c:126</a></div></div>
<div class="ttc" id="alwipopts_8h_html_aa1dd57a66b6de8c0593e9e3e8d1411f6"><div class="ttname"><a href="lwipopts_8h.html#aa1dd57a66b6de8c0593e9e3e8d1411f6">MEMCPY</a></div><div class="ttdeci">#define MEMCPY(dst, src, len)</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00043">lwipopts.h:43</a></div></div>
<div class="ttc" id="agroup__debugging__levels_html_ga77c491e468bf7d9a1bc48430c1866a96"><div class="ttname"><a href="group__debugging__levels.html#ga77c491e468bf7d9a1bc48430c1866a96">LWIP_DBG_LEVEL_WARNING</a></div><div class="ttdeci">#define LWIP_DBG_LEVEL_WARNING</div><div class="ttdef"><b>Definition:</b> <a href="debug_8h_source.html#l00055">debug.h:55</a></div></div>
<div class="ttc" id="astring_8h_html_ace4b911463887af5e748326323e99a23"><div class="ttname"><a href="string_8h.html#ace4b911463887af5e748326323e99a23">memset</a></div><div class="ttdeci">void * memset(void *dst, int c, size_t length)</div></div>
<div class="ttc" id="aprot_2dns_8h_html_ae8c419a73ada8ec6b470b3679ae87b8e"><div class="ttname"><a href="prot_2dns_8h.html#ae8c419a73ada8ec6b470b3679ae87b8e">DNS_MQUERY_IPV6_GROUP_INIT</a></div><div class="ttdeci">#define DNS_MQUERY_IPV6_GROUP_INIT</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dns_8h_source.html#l00133">dns.h:133</a></div></div>
<div class="ttc" id="aprot_2dns_8h_html_a08bc1c1897d2921b6f102365be55da2a"><div class="ttname"><a href="prot_2dns_8h.html#a08bc1c1897d2921b6f102365be55da2a">DNS_RRCLASS_IN</a></div><div class="ttdeci">#define DNS_RRCLASS_IN</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dns_8h_source.html#l00076">dns.h:76</a></div></div>
<div class="ttc" id="amemp_8h_html"><div class="ttname"><a href="memp_8h.html">memp.h</a></div></div>
<div class="ttc" id="agroup__infrastructure__errors_html_ggae2e66c7d13afc90ffecd6151680fbadca4ebdc2aa1dbd75f927845733a3fb1f8b"><div class="ttname"><a href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadca4ebdc2aa1dbd75f927845733a3fb1f8b">ERR_USE</a></div><div class="ttdef"><b>Definition:</b> <a href="err_8h_source.html#l00079">err.h:79</a></div></div>
<div class="ttc" id="amem_8h_html"><div class="ttname"><a href="mem_8h.html">mem.h</a></div></div>
<div class="ttc" id="agroup__ipaddr_html_ggaf2142f0dfdcc938e2db16aa745ed585cac6b2c99cf920e08efcb55dc40e42944e"><div class="ttname"><a href="group__ipaddr.html#ggaf2142f0dfdcc938e2db16aa745ed585cac6b2c99cf920e08efcb55dc40e42944e">IPADDR_TYPE_ANY</a></div><div class="ttdef"><b>Definition:</b> <a href="ip__addr_8h_source.html#l00060">ip_addr.h:60</a></div></div>
<div class="ttc" id="astructdns__hdr_html"><div class="ttname"><a href="structdns__hdr.html">dns_hdr</a></div><div class="ttdef"><b>Definition:</b> <a href="prot_2dns_8h_source.html#l00103">dns.h:103</a></div></div>
<div class="ttc" id="agroup__pbuf_html_gaf76863707dc02993eae116574b1ea03f"><div class="ttname"><a href="group__pbuf.html#gaf76863707dc02993eae116574b1ea03f">pbuf_put_at</a></div><div class="ttdeci">void pbuf_put_at(struct pbuf *p, u16_t offset, u8_t data)</div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8c_source.html#l01340">pbuf.c:1340</a></div></div>
<div class="ttc" id="adns_8h_html"><div class="ttname"><a href="dns_8h.html">dns.h</a></div></div>
<div class="ttc" id="aprot_2dns_8h_html"><div class="ttname"><a href="prot_2dns_8h.html">dns.h</a></div></div>
<div class="ttc" id="agroup__infrastructure__errors_html_ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd"><div class="ttname"><a href="group__infrastructure__errors.html#ggae2e66c7d13afc90ffecd6151680fbadcaa9a1c5a6fdeed0aad7fe41d538482bbd">ERR_VAL</a></div><div class="ttdef"><b>Definition:</b> <a href="err_8h_source.html#l00075">err.h:75</a></div></div>
<div class="ttc" id="astring_8h_html_adcec9a82a6a276e8edb0fd4fc26fe8f2"><div class="ttname"><a href="string_8h.html#adcec9a82a6a276e8edb0fd4fc26fe8f2">strstr</a></div><div class="ttdeci">char * strstr(const char *s, char *find)</div></div>
<div class="ttc" id="astructpbuf_html"><div class="ttname"><a href="structpbuf.html">pbuf</a></div><div class="ttdef"><b>Definition:</b> <a href="pbuf_8h_source.html#l00142">pbuf.h:142</a></div></div>
<div class="ttc" id="adebug_8h_html_a63a04edf7ff63c951bd8706711956cdb"><div class="ttname"><a href="debug_8h.html#a63a04edf7ff63c951bd8706711956cdb">LWIP_DEBUGF</a></div><div class="ttdeci">#define LWIP_DEBUGF(debug, message)</div><div class="ttdef"><b>Definition:</b> <a href="debug_8h_source.html#l00164">debug.h:164</a></div></div>
<div class="ttc" id="aprot_2dns_8h_html_a96eb4534b574ece96ed36806039f73d3"><div class="ttname"><a href="prot_2dns_8h.html#a96eb4534b574ece96ed36806039f73d3">DNS_FLAG1_RESPONSE</a></div><div class="ttdeci">#define DNS_FLAG1_RESPONSE</div><div class="ttdef"><b>Definition:</b> <a href="prot_2dns_8h_source.html#l00084">dns.h:84</a></div></div>
<div class="ttc" id="alwipopts_8h_html_aba55da2352c99d813767913e5e36be1f"><div class="ttname"><a href="lwipopts_8h.html#aba55da2352c99d813767913e5e36be1f">DNS_DEBUG</a></div><div class="ttdeci">#define DNS_DEBUG</div><div class="ttdef"><b>Definition:</b> <a href="lwipopts_8h_source.html#l00486">lwipopts.h:486</a></div></div>
<div class="ttc" id="adef_8h_html_a0dfd02d7c09f9c698a5a7ecc0b7287ad"><div class="ttname"><a href="def_8h.html#a0dfd02d7c09f9c698a5a7ecc0b7287ad">PP_HTONS</a></div><div class="ttdeci">#define PP_HTONS(x)</div><div class="ttdef"><b>Definition:</b> <a href="def_8h_source.html#l00079">def.h:79</a></div></div>
<div class="ttc" id="aerr_8h_html_ab58c2561ad3b133e625183721b25ba27"><div class="ttname"><a href="err_8h.html#ab58c2561ad3b133e625183721b25ba27">lwip_strerr</a></div><div class="ttdeci">#define lwip_strerr(x)</div><div class="ttdef"><b>Definition:</b> <a href="err_8h_source.html#l00108">err.h:108</a></div></div>
<div class="ttc" id="afat__string_8h_html_a070d2ce7b6bb7e5c05602aa8c308d0c4"><div class="ttname"><a href="fat__string_8h.html#a070d2ce7b6bb7e5c05602aa8c308d0c4">NULL</a></div><div class="ttdeci">#define NULL</div><div class="ttdef"><b>Definition:</b> <a href="fat__string_8h_source.html#l00017">fat_string.h:17</a></div></div>
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