CiviCRM Community Forums (archive)

I maintain a payment gateway extension for Netbanx and was wondering where I could find more information on how to implement recurring transactions. I read the code from a few other gateways (mostly AuthNet), but had doubts on the best way to do it.

CiviCRM code has this:
CRM/Contribute/BAO/Contribution/Utils.php processConfirm():
    //Do not send an email if Recurring contribution is done via Direct Mode
    //We will send email once the IPN is received.
    if (!empty($paymentParams['is_recur']) && $form->_contributeMode == 'direct') {
      return TRUE;
    }

1- if my gateway processes the first contribution immediately, and I want to send a receipt immediately, what should the code do?
2- according to Netbanx documentation, recurrent transactions must be processed by sending a 'originalConfirmation' number, which sounds very similar to AuthNet. However, unlike AuthNet, if i understood correctly, it's up to a CiviCRM cron to process the recurring transactions. Although in this case I should just implement something based on Core/Payment/AuthorizeNetIPN.php from within my cron?

References:
https://github.com/mlutfy/ca.nodisys.netbanx
http://wiki.civicrm.org/confluence/display/CRMDOC/Create+a+Payment-Processor+Extension
http://www.support.optimalpayments.com/REPOSITORY/WebServices_API_1.0_FR.pdf