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uip-1.0,give everyone who want.

<tr><td class="mdescLeft">&nbsp;</td><td class="mdescRight">4-byte array used for the 32-bit sequence number calculations. <br></td></tr>
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<hr><h2>Define Documentation</h2>
<a class="anchor" name="ge0825474feee11b4e038bfe71757875f"></a><!-- doxytag: member="uip.h::UIP_APPDATA_SIZE" ref="ge0825474feee11b4e038bfe71757875f" args="" --><p>
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          <td class="md" nowrap valign="top">#define UIP_APPDATA_SIZE          </td>
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The buffer size available for user data in the <a class="el" href="a00150.html#gb81e78f890dbbee50c533a9734b74fd9">uip_buf</a> buffer. 
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This macro holds the available size for user data in the <a class="el" href="a00150.html#gb81e78f890dbbee50c533a9734b74fd9">uip_buf</a> buffer. The macro is intended to be used for checking bounds of available user data.<p>
Example: <div class="fragment"><pre class="fragment"> snprintf(<a class="code" href="a00150.html#g561b8eda32e059d4e7397f776268cc63">uip_appdata</a>, <a class="code" href="a00150.html#ge0825474feee11b4e038bfe71757875f">UIP_APPDATA_SIZE</a>, <span class="stringliteral">"%u\n"</span>, i);
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Definition at line <a class="el" href="a00202.html#l01506">1506</a> of file <a class="el" href="a00202.html">uip.h</a>.    </td>
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<hr><h2>Function Documentation</h2>
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          <td class="md" nowrap valign="top"><a class="el" href="a00153.html#g77570ac4fcab86864fa1916e55676da2">u16_t</a> htons           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="a00153.html#g77570ac4fcab86864fa1916e55676da2">u16_t</a>&nbsp;</td>
          <td class="mdname1" valign="top" nowrap> <em>val</em>          </td>
          <td class="md" valign="top">&nbsp;)&nbsp;</td>
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<p>
Convert 16-bit quantity from host byte order to network byte order. 
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This function is primarily used for converting variables from host byte order to network byte order. For converting constants to network byte order, use the <a class="el" href="a00148.html#g69a7a4951ff21b302267532c21ee78fc">HTONS()</a> macro instead. 
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Definition at line <a class="el" href="a00201.html#l01882">1882</a> of file <a class="el" href="a00201.html">uip.c</a>.
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References <a class="el" href="a00202.html#l01070">HTONS</a>.
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Referenced by <a class="el" href="a00201.html#l00311">uip_chksum()</a>, <a class="el" href="a00201.html#l00407">uip_connect()</a>, <a class="el" href="a00201.html#l00318">uip_ipchksum()</a>, <a class="el" href="a00201.html#l00473">uip_udp_new()</a>, and <a class="el" href="a00180.html#l00140">webclient_get()</a>.    </td>
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<a class="anchor" name="g6832e4d2d046536b6472f7ac92340f68"></a><!-- doxytag: member="uip.c::uip_add32" ref="g6832e4d2d046536b6472f7ac92340f68" args="(u8_t *op32, u16_t op16)" --><p>
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          <td class="md" nowrap valign="top">void uip_add32           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="a00153.html#g4caecabca98b43919dd11be1c0d4cd8e">u8_t</a> *&nbsp;</td>
          <td class="mdname" nowrap> <em>op32</em>, </td>
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          <td class="md" nowrap><a class="el" href="a00153.html#g77570ac4fcab86864fa1916e55676da2">u16_t</a>&nbsp;</td>
          <td class="mdname" nowrap> <em>op16</em></td>
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          <td class="md">)&nbsp;</td>
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<p>
Carry out a 32-bit addition. 
<p>
Because not all architectures for which uIP is intended has native 32-bit arithmetic, uIP uses an external C function for doing the required 32-bit additions in the TCP protocol processing. This function should add the two arguments and place the result in the global variable uip_acc32.<p>
<dl compact><dt><b>Note:</b></dt><dd>The 32-bit integer pointed to by the op32 parameter and the result in the uip_acc32 variable are in network byte order (big endian).</dd></dl>
<dl compact><dt><b>Parameters:</b></dt><dd>
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    <tr><td valign="top"></td><td valign="top"><em>op32</em>&nbsp;</td><td>A pointer to a 4-byte array representing a 32-bit integer in network byte order (big endian).</td></tr>
    <tr><td valign="top"></td><td valign="top"><em>op16</em>&nbsp;</td><td>A 16-bit integer in host byte order. </td></tr>
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Definition at line <a class="el" href="a00201.html#l00249">249</a> of file <a class="el" href="a00201.html">uip.c</a>.
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Referenced by <a class="el" href="a00199.html#l00049">uip_split_output()</a>.    </td>
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<a class="anchor" name="gb6683dd83fe1c8de9a24086d4b69e907"></a><!-- doxytag: member="uip.h::uip_chksum" ref="gb6683dd83fe1c8de9a24086d4b69e907" args="(u16_t *buf, u16_t len)" --><p>
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          <td class="md" nowrap valign="top"><a class="el" href="a00153.html#g77570ac4fcab86864fa1916e55676da2">u16_t</a> uip_chksum           </td>
          <td class="md" valign="top">(&nbsp;</td>
          <td class="md" nowrap valign="top"><a class="el" href="a00153.html#g77570ac4fcab86864fa1916e55676da2">u16_t</a> *&nbsp;</td>
          <td class="mdname" nowrap> <em>buf</em>, </td>
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          <td class="md" nowrap><a class="el" href="a00153.html#g77570ac4fcab86864fa1916e55676da2">u16_t</a>&nbsp;</td>
          <td class="mdname" nowrap> <em>len</em></td>
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