Question

Using curl_setopt() I have set CURLOPT_CONNECTTIMEOUT_MS to 1000 (1 second) and have set up another script that sleeps for 5 seconds, then responds 200 OK (using sleep()) which I call for testing purposes. My script always waits for the response, even though it should yield in a cURL timeout error.

How do I make the timeout work as expected and interrupt the request?

$ch = curl_init($url);
curl_setopt_array($ch, array(
  CURLOPT_RETURNTRANSFER => TRUE,
  CURLOPT_FOLLOWLOCATION => TRUE,
  CURLOPT_NOBODY => TRUE,
  CURLOPT_PROTOCOLS => CURLPROTO_HTTP | CURLPROTO_HTTPS,
  CURLOPT_CONNECTTIMEOUT_MS => 1000,
  CURLOPT_MAXREDIRS => 5,
  CURLOPT_USERAGENT => 'Linkit/2.x Drupal/7.x',
));
$document = curl_exec($ch);

I have also tried CURLOPT_TIMEOUT_MS and also the variants without the _MS suffixes.

I’m using PHP 5.3.4 with cURL 7.19.7 on OS X 10.6, XAMPP.

Answer 1

The CURLOPT_CONNECTTIMEOUT or CURLOPT_CONNECTTIMEOUT_MS define the maximum amount of time that cURL can take to connect to the server but in your case, the connection is successful so the time-out no longer applies.

You need to use CURLOPT_TIMEOUT or CURLOPT_TIMEOUT_MS which define the maximum amount of time cURL can execute for.

For a complete list of options supported by PHP, look at the curl_setopt documentation.