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<h2><span class="refentrytitle">nanohttp</span></h2>
<p>nanohttp - minimal HTTP implementation</p>
<p>minimal HTTP implementation allowing to fetch resources like external subset. </p>
<p>Author(s): Daniel Veillard </p>
<div class="refsynopsisdiv">
<h2>Synopsis</h2>
<pre class="synopsis">const char *	<a href="#xmlNanoHTTPAuthHeader">xmlNanoHTTPAuthHeader</a>	(void * ctx);
void	<a href="#xmlNanoHTTPCleanup">xmlNanoHTTPCleanup</a>		(void);
void	<a href="#xmlNanoHTTPClose">xmlNanoHTTPClose</a>		(void * ctx);
int	<a href="#xmlNanoHTTPContentLength">xmlNanoHTTPContentLength</a>	(void * ctx);
const char *	<a href="#xmlNanoHTTPEncoding">xmlNanoHTTPEncoding</a>	(void * ctx);
int	<a href="#xmlNanoHTTPFetch">xmlNanoHTTPFetch</a>		(const char * URL, <br>					 const char * filename, <br>					 char ** contentType);
void	<a href="#xmlNanoHTTPInit">xmlNanoHTTPInit</a>			(void);
void *	<a href="#xmlNanoHTTPMethod">xmlNanoHTTPMethod</a>		(const char * URL, <br>					 const char * method, <br>					 const char * input, <br>					 char ** contentType, <br>					 const char * headers, <br>					 int ilen);
void *	<a href="#xmlNanoHTTPMethodRedir">xmlNanoHTTPMethodRedir</a>		(const char * URL, <br>					 const char * method, <br>					 const char * input, <br>					 char ** contentType, <br>					 char ** redir, <br>					 const char * headers, <br>					 int ilen);
const char *	<a href="#xmlNanoHTTPMimeType">xmlNanoHTTPMimeType</a>	(void * ctx);
void *	<a href="#xmlNanoHTTPOpen">xmlNanoHTTPOpen</a>			(const char * URL, <br>					 char ** contentType);
void *	<a href="#xmlNanoHTTPOpenRedir">xmlNanoHTTPOpenRedir</a>		(const char * URL, <br>					 char ** contentType, <br>					 char ** redir);
int	<a href="#xmlNanoHTTPRead">xmlNanoHTTPRead</a>			(void * ctx, <br>					 void * dest, <br>					 int len);
const char *	<a href="#xmlNanoHTTPRedir">xmlNanoHTTPRedir</a>	(void * ctx);
int	<a href="#xmlNanoHTTPReturnCode">xmlNanoHTTPReturnCode</a>		(void * ctx);
int	<a href="#xmlNanoHTTPSave">xmlNanoHTTPSave</a>			(void * ctxt, <br>					 const char * filename);
void	<a href="#xmlNanoHTTPScanProxy">xmlNanoHTTPScanProxy</a>		(const char * URL);
</pre>
</div>
<div class="refsect1" lang="en"><h2>Description</h2></div>
<div class="refsect1" lang="en">
<h2>Details</h2>
<div class="refsect2" lang="en">
<div class="refsect2" lang="en">
<h3>
<a name="xmlNanoHTTPAuthHeader"></a>xmlNanoHTTPAuthHeader ()</h3>
<pre class="programlisting">const char *	xmlNanoHTTPAuthHeader	(void * ctx)<br>
</pre>
<p>Get the authentication header of an HTTP context</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>ctx</tt></i>:</span></td>
<td>the HTTP context</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>the stashed value of the WWW-Authenticate or Proxy-Authenticate header.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlNanoHTTPCleanup"></a>xmlNanoHTTPCleanup ()</h3>
<pre class="programlisting">void	xmlNanoHTTPCleanup		(void)<br>
</pre>
<p>Cleanup the HTTP protocol layer.</p>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlNanoHTTPClose"></a>xmlNanoHTTPClose ()</h3>
<pre class="programlisting">void	xmlNanoHTTPClose		(void * ctx)<br>
</pre>
<p>This function closes an HTTP context, it ends up the connection and free all data related to it.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody><tr>
<td><span class="term"><i><tt>ctx</tt></i>:</span></td>
<td>the HTTP context</td>
</tr></tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlNanoHTTPContentLength"></a>xmlNanoHTTPContentLength ()</h3>
<pre class="programlisting">int	xmlNanoHTTPContentLength	(void * ctx)<br>
</pre>
<p>Provides the specified content length from the HTTP header.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>ctx</tt></i>:</span></td>
<td>the HTTP context</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>the specified content length from the HTTP header. Note that a value of -1 indicates that the content length element was not included in the response header.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlNanoHTTPEncoding"></a>xmlNanoHTTPEncoding ()</h3>
<pre class="programlisting">const char *	xmlNanoHTTPEncoding	(void * ctx)<br>
</pre>
<p>Provides the specified encoding if specified in the HTTP headers.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>ctx</tt></i>:</span></td>
<td>the HTTP context</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>the specified encoding or NULL if not available</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlNanoHTTPFetch"></a>xmlNanoHTTPFetch ()</h3>
<pre class="programlisting">int	xmlNanoHTTPFetch		(const char * URL, <br>					 const char * filename, <br>					 char ** contentType)<br>
</pre>
<p>This function try to fetch the indicated resource via HTTP GET and save it's content in the file.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>URL</tt></i>:</span></td>
<td>The URL to load</td>
</tr>
<tr>
<td><span class="term"><i><tt>filename</tt></i>:</span></td>
<td>the filename where the content should be saved</td>
</tr>
<tr>
<td><span class="term"><i><tt>contentType</tt></i>:</span></td>
<td>if available the Content-Type information will be returned at that location</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>-1 in case of failure, 0 in case of success. The contentType, if provided must be freed by the caller</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlNanoHTTPInit"></a>xmlNanoHTTPInit ()</h3>
<pre class="programlisting">void	xmlNanoHTTPInit			(void)<br>
</pre>
<p>Initialize the HTTP protocol layer. Currently it just checks for proxy information</p>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlNanoHTTPMethod"></a>xmlNanoHTTPMethod ()</h3>
<pre class="programlisting">void *	xmlNanoHTTPMethod		(const char * URL, <br>					 const char * method, <br>					 const char * input, <br>					 char ** contentType, <br>					 const char * headers, <br>					 int ilen)<br>
</pre>
<p>This function try to open a connection to the indicated resource via HTTP using the given @method, adding the given extra headers and the input buffer for the request content.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>URL</tt></i>:</span></td>
<td>The URL to load</td>
</tr>
<tr>
<td><span class="term"><i><tt>method</tt></i>:</span></td>
<td>the HTTP method to use</td>
</tr>
<tr>
<td><span class="term"><i><tt>input</tt></i>:</span></td>
<td>the input string if any</td>
</tr>
<tr>
<td><span class="term"><i><tt>contentType</tt></i>:</span></td>
<td>the Content-Type information IN and OUT</td>
</tr>
<tr>
<td><span class="term"><i><tt>headers</tt></i>:</span></td>
<td>the extra headers</td>
</tr>
<tr>
<td><span class="term"><i><tt>ilen</tt></i>:</span></td>
<td>input length</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>NULL in case of failure, otherwise a request handler. The contentType, if provided must be freed by the caller</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlNanoHTTPMethodRedir"></a>xmlNanoHTTPMethodRedir ()</h3>
<pre class="programlisting">void *	xmlNanoHTTPMethodRedir		(const char * URL, <br>					 const char * method, <br>					 const char * input, <br>					 char ** contentType, <br>					 char ** redir, <br>					 const char * headers, <br>					 int ilen)<br>
</pre>
<p>This function try to open a connection to the indicated resource via HTTP using the given @method, adding the given extra headers and the input buffer for the request content.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>URL</tt></i>:</span></td>
<td>The URL to load</td>
</tr>
<tr>
<td><span class="term"><i><tt>method</tt></i>:</span></td>
<td>the HTTP method to use</td>
</tr>
<tr>
<td><span class="term"><i><tt>input</tt></i>:</span></td>
<td>the input string if any</td>
</tr>
<tr>
<td><span class="term"><i><tt>contentType</tt></i>:</span></td>
<td>the Content-Type information IN and OUT</td>
</tr>
<tr>
<td><span class="term"><i><tt>redir</tt></i>:</span></td>
<td>the redirected URL OUT</td>
</tr>
<tr>
<td><span class="term"><i><tt>headers</tt></i>:</span></td>
<td>the extra headers</td>
</tr>
<tr>
<td><span class="term"><i><tt>ilen</tt></i>:</span></td>
<td>input length</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>NULL in case of failure, otherwise a request handler. The contentType, or redir, if provided must be freed by the caller</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlNanoHTTPMimeType"></a>xmlNanoHTTPMimeType ()</h3>
<pre class="programlisting">const char *	xmlNanoHTTPMimeType	(void * ctx)<br>
</pre>
<p>Provides the specified Mime-Type if specified in the HTTP headers.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>ctx</tt></i>:</span></td>
<td>the HTTP context</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>the specified Mime-Type or NULL if not available</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlNanoHTTPOpen"></a>xmlNanoHTTPOpen ()</h3>
<pre class="programlisting">void *	xmlNanoHTTPOpen			(const char * URL, <br>					 char ** contentType)<br>
</pre>
<p>This function try to open a connection to the indicated resource via HTTP GET.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>URL</tt></i>:</span></td>
<td>The URL to load</td>
</tr>
<tr>
<td><span class="term"><i><tt>contentType</tt></i>:</span></td>
<td>if available the Content-Type information will be returned at that location</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>NULL in case of failure, otherwise a request handler. The contentType, if provided must be freed by the caller</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlNanoHTTPOpenRedir"></a>xmlNanoHTTPOpenRedir ()</h3>
<pre class="programlisting">void *	xmlNanoHTTPOpenRedir		(const char * URL, <br>					 char ** contentType, <br>					 char ** redir)<br>
</pre>
<p>This function try to open a connection to the indicated resource via HTTP GET.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>URL</tt></i>:</span></td>
<td>The URL to load</td>
</tr>
<tr>
<td><span class="term"><i><tt>contentType</tt></i>:</span></td>
<td>if available the Content-Type information will be returned at that location</td>
</tr>
<tr>
<td><span class="term"><i><tt>redir</tt></i>:</span></td>
<td>if available the redirected URL will be returned</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>NULL in case of failure, otherwise a request handler. The contentType, if provided must be freed by the caller</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlNanoHTTPRead"></a>xmlNanoHTTPRead ()</h3>
<pre class="programlisting">int	xmlNanoHTTPRead			(void * ctx, <br>					 void * dest, <br>					 int len)<br>
</pre>
<p>This function tries to read @len bytes from the existing HTTP connection and saves them in @dest. This is a blocking call.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>ctx</tt></i>:</span></td>
<td>the HTTP context</td>
</tr>
<tr>
<td><span class="term"><i><tt>dest</tt></i>:</span></td>
<td>a buffer</td>
</tr>
<tr>
<td><span class="term"><i><tt>len</tt></i>:</span></td>
<td>the buffer length</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>the number of byte read. 0 is an indication of an end of connection. -1 indicates a parameter error.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlNanoHTTPRedir"></a>xmlNanoHTTPRedir ()</h3>
<pre class="programlisting">const char *	xmlNanoHTTPRedir	(void * ctx)<br>
</pre>
<p>Provides the specified redirection URL if available from the HTTP header.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>ctx</tt></i>:</span></td>
<td>the HTTP context</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>the specified redirection URL or NULL if not redirected.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlNanoHTTPReturnCode"></a>xmlNanoHTTPReturnCode ()</h3>
<pre class="programlisting">int	xmlNanoHTTPReturnCode		(void * ctx)<br>
</pre>
<p>Get the latest HTTP return code received</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>ctx</tt></i>:</span></td>
<td>the HTTP context</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>the HTTP return code for the request.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlNanoHTTPSave"></a>xmlNanoHTTPSave ()</h3>
<pre class="programlisting">int	xmlNanoHTTPSave			(void * ctxt, <br>					 const char * filename)<br>
</pre>
<p>This function saves the output of the HTTP transaction to a file It closes and free the context at the end</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody>
<tr>
<td><span class="term"><i><tt>ctxt</tt></i>:</span></td>
<td>the HTTP context</td>
</tr>
<tr>
<td><span class="term"><i><tt>filename</tt></i>:</span></td>
<td>the filename where the content should be saved</td>
</tr>
<tr>
<td><span class="term"><i><tt>Returns</tt></i>:</span></td>
<td>-1 in case of failure, 0 in case of success.</td>
</tr>
</tbody>
</table></div>
</div>
<hr>
<div class="refsect2" lang="en">
<h3>
<a name="xmlNanoHTTPScanProxy"></a>xmlNanoHTTPScanProxy ()</h3>
<pre class="programlisting">void	xmlNanoHTTPScanProxy		(const char * URL)<br>
</pre>
<p>(Re)Initialize the HTTP Proxy context by parsing the URL and finding the protocol host port it indicates. Should be like http://myproxy/ or http://myproxy:3128/ A NULL URL cleans up proxy information.</p>
<div class="variablelist"><table border="0">
<col align="left">
<tbody><tr>
<td><span class="term"><i><tt>URL</tt></i>:</span></td>
<td>The proxy URL used to initialize the proxy context</td>
</tr></tbody>
</table></div>
</div>
<hr>
</div>
</div>
</body>
</html>

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