CURLOPT_CONNECTTIMEOUT not working properly?

[MySQL_Narb]

Hi there. I've been experiencing some problems regarding the usage of CURLOPT_CONNECTTIMEOUT. Here's part of my basic proxy tester script:

 

while(count($array) < 4){
    $proxy = $proxies[rand(0,count($proxies))];
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, 'http://www.REMOVED.org/db/test.php');
    curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.1 (KHTML, like Gecko) Chrome/21.0.1180.75 Safari/537.1');
    curl_setopt($ch, CURLOPT_REFERER, 'http://www.REMOVED.org');
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_PROXY, $proxy);
    curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 4);
    $returned = curl_exec($ch);
    curl_close($ch);
    if($returned == 'success' && !in_array($proxy, $current_proxies)) $array[] = $proxy;
    
}

 

As you can see, the cURL option CURLOPT_CONNECTTIMEOUT is set to four seconds. However, it still spends more than four seconds on attempting to connect with the specified proxy. I even have it returning proxies that were a success which have connection times of around 7-8+ seconds.

 

Any ideas regarding this?

[cpd]

Your setting the connection time-out as opposed to an execution time-out. How long it takes for a connection to establish is different to how long it takes for a response.

 

The connection could be taking 0.5 seconds to be established whilst the server takes 7 seconds to actually deliver a response. If you were to use the CURL_TIMEOUT option I believe it'll then return false.