Error from script unable to connect to tlsv1.2

I am developing website that will acquire data from a broker. [CODE=php]connect(true, NULL, $username, $password)) { echo "Not connected"; } else{ echo "connected"; } ?>
I am using this code on my localhost. On that it is working fine. But when i uploaded it on cpanel it is not connecting to the broker. [QUOTE]PHP Warning: stream_socket_client(): unable to connect to tlsv1.2://b-e6439b20-3a80-4688-86b3-0658535e5f2f-1.mq.ap-south-1.amazonaws.com:8883 (Connection refused) in /home/k43irmix6/public_html/phpMQTT.php on line 88
When i was working on xamp it was giving same error and i solved it by adding .crt file of apache and i uploaded the same file on cpanel. But i on cpanel i dont have any idea why it is not connecting. Your kind help is needed. Thanks in advance.