CURLOPT_LOCALPORTRANGE

CURLOPT_LOCALPORTRANGE is one of the accepted parameters for curl_setopt parameter #2.

CURLOPT_LOCALPORTRANGE — The number of attempts cURL makes to find a working local port number, starting with the one set with CURLOPT_LOCALPORT. This option accepts any value that can be cast to a valid int. Defaults to 1. Available as of cURL 7.15.2.

CURLOPT_LOCALPORTRANGE = 140;