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mdns__priv_8h.html 12.8 KB
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[add] the code of original lwIP 2.1.2.  
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   &#160;<span id="projectnumber">2.1.2</span>
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   <div id="projectbrief">Lightweight IP stack</div>
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<div class="header">
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<div class="title">mdns_priv.h File Reference</div>  </div>
</div><!--header-->
<div class="contents">
<div class="textblock"><code>#include &quot;<a class="el" href="mdns__opts_8h.html">lwip/apps/mdns_opts.h</a>&quot;</code><br />
<code>#include &quot;<a class="el" href="pbuf_8h.html">lwip/pbuf.h</a>&quot;</code><br />
</div><table class="memberdecls">
<tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="func-members"></a>
Functions</h2></td></tr>
<tr class="memitem:a17db69fa887515374452b945e959bbf9"><td class="memItemLeft" align="right" valign="top"><a class="el" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="mdns__priv_8h.html#a17db69fa887515374452b945e959bbf9">mdns_domain_add_label</a> (struct mdns_domain *domain, const char *label, u8_t len)</td></tr>
<tr class="separator:a17db69fa887515374452b945e959bbf9"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ab5f49d9356a76879e0e6a14eb0643b23"><td class="memItemLeft" align="right" valign="top">u16_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="mdns__priv_8h.html#ab5f49d9356a76879e0e6a14eb0643b23">mdns_readname</a> (struct <a class="el" href="structpbuf.html">pbuf</a> *p, u16_t offset, struct mdns_domain *domain)</td></tr>
<tr class="separator:ab5f49d9356a76879e0e6a14eb0643b23"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:a52d8f70432ae998814f16b18431213cd"><td class="memItemLeft" align="right" valign="top">int&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="mdns__priv_8h.html#a52d8f70432ae998814f16b18431213cd">mdns_domain_eq</a> (struct mdns_domain *a, struct mdns_domain *b)</td></tr>
<tr class="separator:a52d8f70432ae998814f16b18431213cd"><td class="memSeparator" colspan="2">&#160;</td></tr>
<tr class="memitem:ab72e48cf076afd1e3a08030d1d0bff9e"><td class="memItemLeft" align="right" valign="top">u16_t&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="mdns__priv_8h.html#ab72e48cf076afd1e3a08030d1d0bff9e">mdns_compress_domain</a> (struct <a class="el" href="structpbuf.html">pbuf</a> *<a class="el" href="structpbuf.html">pbuf</a>, u16_t *offset, struct mdns_domain *domain)</td></tr>
<tr class="separator:ab72e48cf076afd1e3a08030d1d0bff9e"><td class="memSeparator" colspan="2">&#160;</td></tr>
</table>
<a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2>
<div class="textblock"><p>MDNS responder private definitions </p>
</div><h2 class="groupheader">Function Documentation</h2>
<a id="ab72e48cf076afd1e3a08030d1d0bff9e"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ab72e48cf076afd1e3a08030d1d0bff9e">&#9670;&nbsp;</a></span>mdns_compress_domain()</h2>

<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">u16_t mdns_compress_domain </td>
          <td>(</td>
          <td class="paramtype">struct <a class="el" href="structpbuf.html">pbuf</a> *&#160;</td>
          <td class="paramname"><em>pbuf</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">u16_t *&#160;</td>
          <td class="paramname"><em>offset</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">struct mdns_domain *&#160;</td>
          <td class="paramname"><em>domain</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
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<p>Return bytes needed to write before jump for best result of compressing supplied domain against domain in outpacket starting at specified offset. If a match is found, offset is updated to where to jump to </p><dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">pbuf</td><td>Pointer to pbuf with the partially constructed DNS packet </td></tr>
    <tr><td class="paramname">offset</td><td>Start position of a domain written earlier. If this location is suitable for compression, the pointer is updated to where in the domain to jump to. </td></tr>
    <tr><td class="paramname">domain</td><td>The domain to write </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>Number of bytes to write of the new domain before writing a jump to the offset. If compression can not be done against this previous domain name, the full new domain length is returned. </dd></dl>

</div>
</div>
<a id="a17db69fa887515374452b945e959bbf9"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a17db69fa887515374452b945e959bbf9">&#9670;&nbsp;</a></span>mdns_domain_add_label()</h2>

<div class="memitem">
<div class="memproto">
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        <tr>
          <td class="memname"><a class="el" href="group__infrastructure__errors.html#gaf02d9da80fd66b4f986d2c53d7231ddb">err_t</a> mdns_domain_add_label </td>
          <td>(</td>
          <td class="paramtype">struct mdns_domain *&#160;</td>
          <td class="paramname"><em>domain</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
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          <td class="paramname"><em>label</em>, </td>
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          <td class="paramkey"></td>
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          <td class="paramtype">u8_t&#160;</td>
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        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
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<p>Add a label part to a domain </p><dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">domain</td><td>The domain to add a label to </td></tr>
    <tr><td class="paramname">label</td><td>The label to add, like &lt;hostname&gt;, 'local', 'com' or '' </td></tr>
    <tr><td class="paramname">len</td><td>The length of the label </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>ERR_OK on success, an err_t otherwise if label too long </dd></dl>

</div>
</div>
<a id="a52d8f70432ae998814f16b18431213cd"></a>
<h2 class="memtitle"><span class="permalink"><a href="#a52d8f70432ae998814f16b18431213cd">&#9670;&nbsp;</a></span>mdns_domain_eq()</h2>

<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">int mdns_domain_eq </td>
          <td>(</td>
          <td class="paramtype">struct mdns_domain *&#160;</td>
          <td class="paramname"><em>a</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">struct mdns_domain *&#160;</td>
          <td class="paramname"><em>b</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
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</div><div class="memdoc">
<p>Return 1 if contents of domains match (case-insensitive) </p><dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">a</td><td>Domain name to compare 1 </td></tr>
    <tr><td class="paramname">b</td><td>Domain name to compare 2 </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>1 if domains are equal ignoring case, 0 otherwise </dd></dl>

</div>
</div>
<a id="ab5f49d9356a76879e0e6a14eb0643b23"></a>
<h2 class="memtitle"><span class="permalink"><a href="#ab5f49d9356a76879e0e6a14eb0643b23">&#9670;&nbsp;</a></span>mdns_readname()</h2>

<div class="memitem">
<div class="memproto">
      <table class="memname">
        <tr>
          <td class="memname">u16_t mdns_readname </td>
          <td>(</td>
          <td class="paramtype">struct <a class="el" href="structpbuf.html">pbuf</a> *&#160;</td>
          <td class="paramname"><em>p</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">u16_t&#160;</td>
          <td class="paramname"><em>offset</em>, </td>
        </tr>
        <tr>
          <td class="paramkey"></td>
          <td></td>
          <td class="paramtype">struct mdns_domain *&#160;</td>
          <td class="paramname"><em>domain</em>&#160;</td>
        </tr>
        <tr>
          <td></td>
          <td>)</td>
          <td></td><td></td>
        </tr>
      </table>
</div><div class="memdoc">
<p>Read possibly compressed domain name from packet buffer </p><dl class="params"><dt>Parameters</dt><dd>
  <table class="params">
    <tr><td class="paramname">p</td><td>The packet </td></tr>
    <tr><td class="paramname">offset</td><td>start position of domain name in packet </td></tr>
    <tr><td class="paramname">domain</td><td>The domain name destination </td></tr>
  </table>
  </dd>
</dl>
<dl class="section return"><dt>Returns</dt><dd>The new offset after the domain, or MDNS_READNAME_ERROR if reading failed </dd></dl>

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