cURL Error when trying to use REST PACTH - PHP

Content

I am trying to update a CO, i have the following error returned : 

error:SSL read: error:00000000:lib(0):func(0):reason(0), errno 54

I tried everything and i still don't know how to successfully update this CO

Code Snippet

             curl_setopt($ch, CURLOPT_URL,trim("site.com/services/rest/connect/v1.3/CO.Emp/567"));
curl_setopt($ch, CURLOPT_USERPWD, $user . ":" . $pass);
curl_setopt($ch, CURLOPT_PORT, 443);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, false);
curl_setopt($ch, CURLOPT_POST, true);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, "PATCH");
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 0);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data_string);
curl_setopt($ch, CURLOPT_HEADER, true);

curl_setopt($ch, CURLOPT_HTTPHEADER, array(
                                           'Content-Type: application/json',