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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_header">
<refmeta>
<refentrytitle>http_header</refentrytitle>
<refmiscinfo>ws</refmiscinfo>
</refmeta>
<refnamediv>
<refname>http_header</refname>
<refpurpose> Specifies non-default HTTP response headers</refpurpose>
</refnamediv>
<refsynopsisdiv>
<funcsynopsis id="fsyn_http_header">
<funcprototype id="fproto_http_header">
<funcdef><function>http_header</function></funcdef>
<paramdef>in <parameter>head</parameter> varchar</paramdef>
</funcprototype>
</funcsynopsis>
</refsynopsisdiv>
<refsect1 id="desc_http_header"><title>Description</title>
<para>
This function is used to add additional HTTP header lines to the server response.
The http_header parameter MUST finish with <CR><LF> characters.
Warning: Each call of this function cancels the effect of the previous call.
In order to add to previously set header lines, use
the <function>http_header_get</function> function to retrieve the current headers.
</para>
<para>
A Content-Type or Media-Type header specified as a part of the headers given with
this function will override the default. Otherwise the header lines set using this function add to but do not replace the default response headers.
Note that this function cannot set the status line. Use http_request_status for that.
</para>
</refsect1>
<refsect1 id="examples_http_header"><title>Examples</title>
<example id="ex_http_header"><title>Modifying the headers</title>
<programlisting>
<?vsp
http_header ('Content-type: text/plain\r\n');
-- the effect is browser will display content as text document
?>
</programlisting>
</example>
</refsect1>
</refentry>
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