a00160.html

最新的免费嵌入式系统TCP/IP协议栈！

    <td>
      &nbsp;
    </td>
    <td>

<p>
Callback function which is called when a hostname is found. 
<p>
This function must be implemented by the module that uses the DNS resolver. It is called when a hostname is found, or when a hostname was not found.<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>name</em>&nbsp;</td><td>A pointer to the name that was looked up.</td></tr>
    <tr><td valign="top"></td><td valign="top"><em>ipaddr</em>&nbsp;</td><td>A pointer to a 4-byte array containing the IP address of the hostname, or NULL if the hostname could not be found. </td></tr>
  </table>
</dl>
<dl compact><dt><b>Examples: </b></dt><dd>
<a class="el" href="a00046.html#a135">resolv.c</a>, and <a class="el" href="a00047.html#a156">resolv.h</a>.</dl>    </td>
  </tr>
</table>
<a class="anchor" name="g3191066cf8f76bd00b6843b77c37068f"></a><!-- doxytag: member="resolv.h::resolv_getserver" ref="g3191066cf8f76bd00b6843b77c37068f" args="(void)" --><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
  <tr>
    <td class="mdRow">
      <table cellpadding="0" cellspacing="0" border="0">
        <tr>
          <td class="md" nowrap valign="top"><a class="el" href="a00153.html#g77570ac4fcab86864fa1916e55676da2">u16_t</a> * resolv_getserver           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">void&nbsp;</td>
          <td class="mdname1" valign="top" nowrap>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap></td>
        </tr>
      </table>
    </td>
  </tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
Obtain the currently configured DNS server. 
<p>
<dl compact><dt><b>Returns:</b></dt><dd>A pointer to a 4-byte representation of the IP address of the currently configured DNS server or NULL if no DNS server has been configured. </dd></dl>
<dl compact><dt><b>Examples: </b></dt><dd>
<a class="el" href="a00046.html#a149">resolv.c</a>, and <a class="el" href="a00047.html#a159">resolv.h</a>.</dl>
<p>
Definition at line <a class="el" href="a00172.html#l00422">422</a> of file <a class="el" href="a00172.html">resolv.c</a>.
<p>
References <a class="el" href="a00172.html#l00069">NULL</a>, and <a class="el" href="a00202.html#l01211">uip_udp_conn::ripaddr</a>.    </td>
  </tr>
</table>
<a class="anchor" name="g66d19181ad5fe8b8f7c84d1f1d46a2ec"></a><!-- doxytag: member="resolv.h::resolv_lookup" ref="g66d19181ad5fe8b8f7c84d1f1d46a2ec" args="(char *name)" --><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
  <tr>
    <td class="mdRow">
      <table cellpadding="0" cellspacing="0" border="0">
        <tr>
          <td class="md" nowrap valign="top"><a class="el" href="a00153.html#g77570ac4fcab86864fa1916e55676da2">u16_t</a> * resolv_lookup           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">char *&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>name</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap></td>
        </tr>
      </table>
    </td>
  </tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
Look up a hostname in the array of known hostnames. 
<p>
<dl compact><dt><b>Note:</b></dt><dd>This function only looks in the internal array of known hostnames, it does not send out a query for the hostname if none was found. The function <a class="el" href="a00160.html#ge4dcbbe6c641d2e3b8537b479df5fc99">resolv_query()</a> can be used to send a query for a hostname.</dd></dl>
<dl compact><dt><b>Returns:</b></dt><dd>A pointer to a 4-byte representation of the hostname's IP address, or NULL if the hostname was not found in the array of hostnames. </dd></dl>
<dl compact><dt><b>Examples: </b></dt><dd>
<a class="el" href="a00046.html#a148">resolv.c</a>, <a class="el" href="a00047.html#a161">resolv.h</a>, and <a class="el" href="a00040.html#a271">webclient.c</a>.</dl>
<p>
Definition at line <a class="el" href="a00172.html#l00396">396</a> of file <a class="el" href="a00172.html">resolv.c</a>.
<p>
References <a class="el" href="a00172.html#l00123">RESOLV_ENTRIES</a>, and <a class="el" href="a00172.html#l00111">STATE_DONE</a>.
<p>
Referenced by <a class="el" href="a00180.html#l00378">webclient_appcall()</a>, and <a class="el" href="a00180.html#l00140">webclient_get()</a>.    </td>
  </tr>
</table>
<a class="anchor" name="ge4dcbbe6c641d2e3b8537b479df5fc99"></a><!-- doxytag: member="resolv.h::resolv_query" ref="ge4dcbbe6c641d2e3b8537b479df5fc99" args="(char *name)" --><p>
<table class="mdTable" cellpadding="2" cellspacing="0">
  <tr>
    <td class="mdRow">
      <table cellpadding="0" cellspacing="0" border="0">
        <tr>
          <td class="md" nowrap valign="top">void resolv_query           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top">char *&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>name</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
          <td class="md" nowrap></td>
        </tr>
      </table>
    </td>
  </tr>
</table>
<table cellspacing="5" cellpadding="0" border="0">
  <tr>
    <td>
      &nbsp;
    </td>
    <td>

<p>
Queues a name so that a question for the name will be sent out. 
<p>
<dl compact><dt><b>Parameters:</b></dt><dd>
  <table border="0" cellspacing="2" cellpadding="0">
    <tr><td valign="top"></td><td valign="top"><em>name</em>&nbsp;</td><td>The hostname that is to be queried. </td></tr>
  </table>
</dl>
<dl compact><dt><b>Examples: </b></dt><dd>
<a class="el" href="a00046.html#a146">resolv.c</a>, <a class="el" href="a00047.html#a162">resolv.h</a>, and <a class="el" href="a00040.html#a306">webclient.c</a>.</dl>
<p>
Definition at line <a class="el" href="a00172.html#l00350">350</a> of file <a class="el" href="a00172.html">resolv.c</a>.
<p>
References <a class="el" href="a00172.html#l00123">RESOLV_ENTRIES</a>, and <a class="el" href="a00172.html#l00108">STATE_UNUSED</a>.
<p>
Referenced by <a class="el" href="a00180.html#l00378">webclient_appcall()</a>.    </td>
  </tr>
</table>
<hr size="1"><address style="align: right;"><small>Generated on Mon Jun 12 10:23:02 2006 for uIP 1.0 by&nbsp;
<a href="http://www.doxygen.org/index.html">
<img src="doxygen.png" alt="doxygen" align="middle" border="0"></a> 1.4.6 </small></address>
</body>
</html>