Provisioing Module with curl

[Rick_F]

Hello,

I am trying to develop a provisioning module for WHMCS. I am using curl in order to communicate with a remote API. 

I am currently using this code

function provisioningmodule_create_login(array $params)
{
    try {
        require('login_module.php');
        $curl = curl_init();
        curl_setopt($curl, CURLOPT_COOKIEJAR, tempnam('/tmp', 'CURLCOOKIE'));

        $responseLogin = login($curl);
        $responseCreateDomain = createDomain($curl, 'test.com', 2048, 1);
        curl_close($curl);
    } catch (Exception $e) {
        // Record the error in WHMCS's module log.
        logModuleCall(
            'provisioningmodule',
            __FUNCTION__,
            $params,
            $e->getMessage(),
            $e->getTraceAsString()
        );

        return $e->getMessage();
    }

    return 'success';
}
File login_module.php

  function login($curl)
    {
        global $url;
        global $pass;
        global $user;

        curl_setopt($curl, CURLOPT_URL, $url . '/login');
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE);
        curl_setopt($curl, CURLOPT_POST, TRUE);
    
        curl_setopt($curl, CURLOPT_POSTFIELDS, array(
            'username' => $user,
            'password' => $pass,
        ));

        curl_setopt($curl, CURLOPT_VERBOSE, true);
        $errStream = fopen('php://temp', 'w+');
        curl_setopt($curl, CURLOPT_STDERR, $errStream);

        $response = curl_exec($curl);

        rewind($errStream);
        $verboseLog = stream_get_contents($errStream);

        logModuleCall(
            'provisioningmodule',
            'login_raw',
            $verboseLog,
            'test',
            'test'
        );

        $responseJSON = json_decode($response, TRUE);
        return $responseJSON;
    };

Curl is not working. It even doesn't create a cookie in /tmp

But my main issue is logging. I only get the last line of the curl output in the module log which is "* Closing connection -1". What am I doing wrong? PHP doesn't error anything. Already tried setting error_log path (which is visible in the whmcs php info).

Has anyone had this problem?