When you specify a secure URL (https) in the providerUri parameter in wsproviders.ini.append.php, the connection to the target feed does not work. We have the following error in the status check page:

0 - php_network_getaddresses: getaddrinfo failed: Name or service not known

After debugging the code, we found a bug in the file extension/ezcontentstaging/classes/private/ezrestclient.php

When the protocol is https, the script goes into this condition:

            if ( $this->Protocol == 'https' )
            {
                $connectServer = 'ssl://' . $connectServer;
            }

The following code will then not work:

            /// @todo add ssl support with raw sockets
            $fp = stream_socket_client(
                "tcp://" . $connectServer . ":" . $connectPort,
                $this->errorNumber,
                $this->errorString,
                $this->Timeout != 0 ? $this->Timeout : ini_get( "default_socket_timeout" )
            );

The stream_socket_client function will try to connect to a server address that looks like this: tcp://ssl://....