/**
* url forward 兼容处理
* 获取真正的请求链接，并初始化socket句柄
*
* @param array $options
*/
private function followLocation()
{
if (!$this->_redirects) {
return;
}
if ($this->_maxRedirs <= 0) {
return;
}
$maxRedirs = $this->_maxRedirs;
$newurl = $this->url;
do {
/* @var $socket WindHttpSocket */
$socket = new WindHttpSocket($newurl, $this->timeout);
$socket->setResponseHasBody(false);
$socket->setResponseHasHeader(true);
$header = $socket->send();
$code = $socket->getStatus();
$socket->close();
if ($code == 301 || $code == 302) {
preg_match('/Location:(.*?)\\n/', $header, $matches);
$newurl = trim(array_pop($matches));
} else {
$code = 0;
}
} while ($code && --$maxRedirs);
if ($newurl == $this->url) {
return;
}
$this->url = $newurl;
$this->httpHandler = $this->createHttpHandler();
}
