This feature can be used in the context of an automatic software download or automatic password protected access to a restricted area of your site. Anywhere where customer or order information must be used post-payment.
REPLY_LINK_URL SUPPLEMENTARY ARGUMENTS
The reply_link_url works much like the return_link_url with the one exception being that it is automatically fired off as a GET request just prior to the confirmation emails and receipt page being sent following a successful transaction. It will do interpolation of cgi arguments in the same manner as return_link_url, and explicity names the port (currently port 80 only is available). Vendors may not specify alternate ports. The request has a 15 second timeout, so if the remote server has not responded in that time, an error will be generated, and reported via the vendor_reply_errors list, available for template parsing. If the vendor's server does respond in the 15 seconds allowed, the response is read into a variable called vendor_reply, and is also available for parsing.