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<?xml version="1.0" encoding="ISO-8859-1"?>
<!--
-
- This file is part of the OpenLink Software Virtuoso Open-Source (VOS)
- project.
-
- Copyright (C) 1998-2018 OpenLink Software
-
- This project is free software; you can redistribute it and/or modify it
- under the terms of the GNU General Public License as published by the
- Free Software Foundation; only version 2 of the License, dated June 1991.
-
- This program is distributed in the hope that it will be useful, but
- WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- General Public License for more details.
-
- You should have received a copy of the GNU General Public License along
- with this program; if not, write to the Free Software Foundation, Inc.,
- 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
-
-
-->
<refentry id="fn_http_rewrite">
<refmeta>
<refentrytitle>http_rewrite</refentrytitle>
<refmiscinfo>ws</refmiscinfo>
</refmeta>
<refnamediv>
<refname>http_rewrite</refname>
<refpurpose>Clears output written to a string output or to an HTTP </refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis id="fsyn_http_rewrite">
<funcprototype id="fproto_http_rewrite">
<funcdef><function>http_rewrite</function></funcdef>
<paramdef><optional>in <parameter>stream</parameter> any</optional></paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1 id="desc_http_rewrite"><title>Description</title>
<para>
This clears any previous output to the stream. If the stream is omitted or 0 the stream
is the HTTP client stream of the calling procedure.
</para>
<para>All output from VSP page procedures is buffered into a local string stream
before being sent out. This is done so as to support the HTTP/1.1 required
content length and to allow recovery from errors.
</para>
</refsect1>
<refsect1 id="params_http_rewrite"><title>Parameters</title>
<refsect2><title>stream</title>
<para>Optional stream to clear. Null or zero (0) implies the default HTTP client stream.</para></refsect2>
</refsect1>
<refsect1 id="examples_http_rewrite"><title>Using http_rewrite()</title>
<example id="ex_http_rewrite">
<para>A VSP page excerpt.</para>
<programlisting>
<p>Nope. You won't see this.</p>
<?vsp
http ('<p>This line will contribute to your local entropy.</p>');
http_rewrite ();
http ('<p>Now THIS is what you wanted to see, isn't it?</p>');
?>
</programlisting>
</example>
</refsect1>
<refsect1 id="seealso_http_rewrite"><title>See Also</title>
<para>
<link linkend="fn_http_value"><function>http_value</function></link>,
<link linkend="fn_http_url"><function>http_url</function></link>,
<link linkend="fn_string_output"><function>string_output</function></link>.
</para>
</refsect1>
</refentry>
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