I need to learn how to use Paypal's IPN. For this project I need sample code in ASP that shows how to process payments on webpages. For the sample, there would be two pages. The first page would be the relevent information. Then the second page would send the payment to the Paypal. Then when Paypal sends the payment information, being able to communicate with Paypal to successfully process the payment and then return the information given from the server. I see some samples on the site but cannot understand it. There should be another one where if it was a previous payment, it can capture that and show all the information about the payment such as notes, address, transaction id, etc. I need to know if there is any way to create an application where instead of using the webserver, the application can check paypal for ipn information so it can be ran on a timer instead of waiting for someone to visit the page.
The samples to show how to use the Paypal's IPN. Also, how to download the API's so they can be used. Finding out whether there are other means of getting the information instead of just when someone is visiting the site. Finding out how to test it before doing it for reals. The coder can just use testing procedures instead of transferring the payments for reals. Finally, willing to answer any questions so I can use it myself for E-Commerce Applications.
Windows 2000 Server Edition