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<?php
$v = "v2";
$d = date('i');
$etag = "ETag: \"" . $v . "." . $d . "\"";
if(isset($_SERVER['HTTP_IF_NONE_MATCH']) && eregi($_SERVER['HTTP_IF_NONE_MATCH'], $etag)){
header("HTTP/1.1 304 Not Modified");
header($etag);
exit(0);
} else {
header($etag);
echo "<html>";
echo "<head><title>SIEGE: Etity Tag Test</title></head>";
echo "<body>";
echo "<h2>Siege Entity Tags</h2>";
echo "This page sets a entity tag every minute. The header looks like this:<br>";
echo "<code>";
echo "$etag";
echo "</code><br><br>";
echo "To test ETags response, you should enable them in your apache webserver. To do this <br>";
echo "on apache, you should add the following directive at the server, virtual host, directory <br>";
echo "or .htaccess level:<br><br>";
echo "<code>";
echo "FileETag INode MTime Size";
echo "</code>";
echo "</body>";
echo "</html>";
}
?>
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