CURL certification is missing on some server

[nextend]

CURL certification is missing on some server. Currently the stable version will give you back false response, but won't give any information about the problem.

My patch contains a feature, which allows you to see the CURL error message if something went wrong also it contains patch for the missing certification.

[dan-coulter]

I'm not going to include this massive certs file just in case someone's curl isn't set up correctly. This seems like an overkill fix.

[nextend]

Thanks, you could also check how Facebook implemented the cacert file. First they create a normal request without the custom cacert and if that fails with specific error codes, then they try again with the cacert file.

https://github.com/facebook/facebook-php-sdk/blob/master/src/base_facebook.php

$result = curl_exec($ch);

$errno = curl_errno($ch);
// CURLE_SSL_CACERT || CURLE_SSL_CACERT_BADFILE
if ($errno == 60 || $errno == 77) {
  self::errorLog('Invalid or no certificate authority found, '.
                 'using bundled information');
  curl_setopt($ch, CURLOPT_CAINFO,
              dirname(__FILE__) . DIRECTORY_SEPARATOR . 'fb_ca_chain_bundle.crt');
  $result = curl_exec($ch);
}