What does the PHP SSL Connect error mean?

Product

• Messaging

Resolution

The CM API's demand TLS1.2 or higher (prefered 1.3) and no longer support SSLv3 and lower. And in some situations cURL in PHP is not able to auto-detect the correct cryptographic protocol. Adding the following rule to the curl_setopt_array manually fixes the protocol to TLSv1:

CURLOPT_SSLVERSION => 1