Module_HttpClient_Driver_Curl::_create

protected function _create($url,$timeout)
{
    if ( false===strpos($url, '://') )
    {
        preg_match('#^(http(?:s)?\://[^/]+/)#', $_SERVER["SCRIPT_URI"] , $m);
        $the_url = $m[1].ltrim($url,'/');
    }
    else
    {
        $the_url = $url;
    }

    if ($this->ip)
    {
        # 如果设置了IP，则把URL替换，然后设置Host的头即可
        if (preg_match('#^(http(?:s)?)\://([^/\:]+)(\:[0-9]+)?/#', $the_url.'/',$m))
        {
            $this->header[] = 'Host: '.$m[2];
            $the_url = $m[1].'://'.$this->ip.$m[3].'/'.substr($the_url,strlen($m[0]));
        }
    }

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $the_url);
    curl_setopt($ch, CURLOPT_HEADER, true);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_TIMEOUT, $timeout);
    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT_MS, HttpClient_Driver_Curl::$connecttimeout_ms);

    if ( preg_match('#^https://#i', $the_url) )
    {
        curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, false);
        curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
    }

    if ($this->cookies)
    {
        if (is_array($this->cookies))
        {
            curl_setopt($ch, CURLOPT_COOKIE, http_build_query($this->cookies, '', ';'));
        }
        else
        {
            curl_setopt($ch, CURLOPT_COOKIE, $this->cookies);
        }
    }

    if ($this->referer)
    {
        curl_setopt($ch, CURLOPT_REFERER, $this->referer);
    }

    if ($this->agent)
    {
        curl_setopt($ch, CURLOPT_USERAGENT, $this->agent);
    }
    elseif (array_key_exists('HTTP_USER_AGENT', $_SERVER))
    {
        curl_setopt($ch, CURLOPT_USERAGENT, $_SERVER['HTTP_USER_AGENT']);
    }

    foreach ($this->_option as $k => $v)
    {
        curl_setopt($ch, $k, $v);
    }

    if ( $this->header )
    {
        $header = array();
        foreach ($this->header as $item)
        {
            # 防止有重复的header
            if (preg_match('#(^[^:]*):.*$#', $item,$m))
            {
                $header[$m[1]] = $item;
            }
        }
        curl_setopt($ch, CURLOPT_HTTPHEADER, array_values($header));
    }

    # 设置POST数据
    if (isset($this->_post_data[$url]))
    {
        curl_setopt($ch , CURLOPT_POSTFIELDS , $this->_post_data[$url]);
    }

    return $ch;
}