$this->curlOptions[CURLOPT_PROXY] = $this->proxy;
$this->curlOptions[CURLOPT_TIMEOUT] = $this->timeout;
- $this->curlOptions[CURLOPT_CONNECTTIMEOUT_MS] = $this->connectTimeout * 1000;
+
+ // Only supported in curl >= 7.16.2
+ if ( defined( 'CURLOPT_CONNECTTIMEOUT_MS' ) ) {
+ $this->curlOptions[CURLOPT_CONNECTTIMEOUT_MS] = $this->connectTimeout * 1000;
+ }
+
$this->curlOptions[CURLOPT_HTTP_VERSION] = CURL_HTTP_VERSION_1_0;
$this->curlOptions[CURLOPT_WRITEFUNCTION] = $this->callback;
$this->curlOptions[CURLOPT_HEADERFUNCTION] = array( $this, "readHeader" );