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Code Editor : refproxy.html

<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><title>ne_session_proxy</title><link rel="stylesheet" type="text/css" href="../manual.css"><meta name="generator" content="DocBook XSL Stylesheets V1.78.1"><link rel="home" href="index.html" title="neon HTTP/WebDAV client library"><link rel="up" href="ref.html" title="neon API reference"><link rel="prev" href="refsess.html" title="ne_session_create"><link rel="next" href="refsessflags.html" title="ne_set_session_flag"></head><body bgcolor="white" text="black" link="#0000FF" vlink="#840084" alink="#0000FF"><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">ne_session_proxy</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="refsess.html">Prev</a> </td><th width="60%" align="center">neon API reference</th><td width="20%" align="right"> <a accesskey="n" href="refsessflags.html">Next</a></td></tr></table><hr></div><div class="refentry"><a name="refproxy"></a><div class="titlepage"></div><div class="refnamediv"><h2>Name</h2><p>ne_session_proxy, ne_session_socks_proxy, ne_session_system_proxy, ne_set_addrlist — configure proxy servers</p></div><div class="refsynopsisdiv"><h2>Synopsis</h2><div class="funcsynopsis"><pre class="funcsynopsisinfo">#include &lt;ne_session.h&gt;</pre><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">void <b class="fsfunc">ne_session_proxy</b>(</code></td><td>ne_session *<var class="pdparam">session</var>, </td></tr><tr><td> </td><td>const char *<var class="pdparam">hostname</var>, </td></tr><tr><td> </td><td>unsigned int <var class="pdparam">port</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">void <b class="fsfunc">ne_session_system_proxy</b>(</code></td><td>ne_session *<var class="pdparam">session</var>, </td></tr><tr><td> </td><td>unsigned int <var class="pdparam">flags</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">void <b class="fsfunc">ne_session_socks_proxy</b>(</code></td><td>ne_session *<var class="pdparam">session</var>, </td></tr><tr><td> </td><td>enum ne_sock_sversion <var class="pdparam">version</var>, </td></tr><tr><td> </td><td>const char *<var class="pdparam">hostname</var>, </td></tr><tr><td> </td><td>unsigned int <var class="pdparam">port</var>, </td></tr><tr><td> </td><td>const char *<var class="pdparam">username</var>, </td></tr><tr><td> </td><td>const char *<var class="pdparam">password</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div><table border="0" class="funcprototype-table" summary="Function synopsis" style="cellspacing: 0; cellpadding: 0;"><tr><td><code class="funcdef">void <b class="fsfunc">ne_set_addrlist</b>(</code></td><td>ne_session *<var class="pdparam">session</var>, </td></tr><tr><td> </td><td>const ne_inet_addr **<var class="pdparam">addrlist</var>, </td></tr><tr><td> </td><td>size_t <var class="pdparam">count</var><code>)</code>;</td></tr></table><div class="funcprototype-spacer"> </div></div></div><div class="refsect1"><a name="idm140368850403408"></a><h2>Description</h2><p>One (and no more than one) of the functions
	<code class="function">ne_session_proxy</code>,
	<code class="function">ne_session_system_proxy</code>,
	<code class="function">ne_session_socks_proxy</code>,
	<code class="function">ne_set_addrlist</code> can be used to configure
	a proxy server for a given session object.  If more than one
	function is invoked for any given session object, only the
	last call has effect.  If one of the functions is to be used,
	it must be used before the creation of any request object for
	the session.</p><div class="refsect2"><a name="idm140368850399584"></a><h3>HTTP proxy specification</h3><p>The <code class="function">ne_session_proxy</code> function
          configures use of an HTTP proxy server for the session, the
          location of which is given by the
          <code class="parameter">hostname</code> and
          <code class="parameter">port</code> paramters.  If the proxy
          requires authentication, <a class="xref" href="refauth.html#ne_set_proxy_auth">ne_set_proxy_auth</a>
          should be used.</p></div><div class="refsect2"><a name="idm140368850395840"></a><h3>System proxy configuration</h3><p>The <code class="function">ne_session_system_proxy</code>
          function configures the session to use any proxy servers
          specified by the system configuration.  Support for this
          function is platform-specific; if unsupported, the function
          has no effect.</p></div><div class="refsect2"><a name="idm140368850393824"></a><h3>SOCKS proxy configuration</h3><p>The <code class="function">ne_session_socks_proxy</code>
          function configures the session to use a SOCKS proxy.  The
          <code class="parameter">version</code> indicates which version of
          the SOCKS protocol should be used.  The
          <code class="parameter">hostname</code> and
          <code class="parameter">port</code> parameters specify the SOCKS
          proxy location.  Note that a server with only an IPv6
          address cannot be used with SOCKS v4 or v4A.  The
          interpretation of the other arguments depends on the version
          specified:</p><div class="variablelist"><table border="0" class="variablelist"><colgroup><col align="left" valign="top"><col></colgroup><tbody><tr><td><p><span class="term"><code class="constant">NE_SOCK_SOCKSV4</code> (version 4)</span></p></td><td>The <code class="parameter">username</code> parameter
	       must be non-<code class="literal">NULL</code>; the <code class="parameter">password</code>
	       parameter is ignored.</td></tr><tr><td><p><span class="term"><code class="constant">NE_SOCK_SOCKSV4A</code> (version 4A)</span></p></td><td>The <code class="parameter">username</code> parameter
	      must be non-<code class="literal">NULL</code>; the <code class="parameter">password</code>
	      parameter is ignored.</td></tr><tr><td><p><span class="term"><code class="constant">NE_SOCK_SOCKSV5</code> (version 5)</span></p></td><td>The <code class="parameter">username</code> parameter
	      may be <code class="literal">NULL</code>; if it is non-<code class="literal">NULL</code>,
	      the <code class="parameter">password</code> parameter must also
	      be non-<code class="literal">NULL</code>; otherwise, it is ignored..</td></tr></tbody></table></div></div><div class="refsect2"><a name="idm140368850377472"></a><h3>Origin server address override</h3><p>The <code class="function">ne_set_addrlist</code> function
          forces use of an address and port the a specified list when
          establishing a TCP connection, ignoring the "real" hostname
          and port identifying the origin server for the session (as
          passed to <code class="function">ne_session_create</code>).  The
          origin server's "real" hostname and port will still be used
          in the <code class="literal">Host</code> header in HTTP requests.
          When a connection is required, the library will iterate
          through the <code class="parameter">addrlist</code> list, attempting
          to connect to the address <code class="parameter">addrlist[0]</code>
          through to <code class="parameter">addrlist[count-1]</code> in turn,
          until a connection can be established.</p></div></div><div class="refsect1"><a name="idm140368850371872"></a><h2>Return Values</h2><p>None of the functions described here has a return
	value.</p></div><div class="refsect1"><a name="idm140368850370640"></a><h2>Examples</h2><p>Create and destroy a session:</p><pre class="programlisting">ne_session *sess;
sess = ne_session_create("http", "host.example.com", 80);
ne_session_proxy(sess, "proxy.example.com", 3128);
/* ... use sess ... */
ne_session_destroy(sess);
</pre></div><div class="refsect1"><a name="idm140368850368672"></a><h2>See Also</h2><p><a class="xref" href="refsslvfy.html#ne_ssl_set_verify">ne_ssl_set_verify</a>, <a class="xref" href="refsslca.html#ne_ssl_trust_cert">ne_ssl_trust_cert</a>, <a class="xref" href="refsockinit.html#ne_sock_init">ne_sock_init</a>, <a class="xref" href="refsessflags.html#ne_set_session_flag">ne_set_session_flag</a></p></div></div><div class="navfooter"><hr><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="refsess.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="ref.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="refsessflags.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">ne_session_create </td><td width="20%" align="center"><a accesskey="h" href="index.html">Home</a></td><td width="40%" align="right" valign="top"> ne_set_session_flag</td></tr></table></div></body></html>

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