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ipn-code-samples's Introduction

IPN Overview :

  • PayPal Instant Payment Notification is a call back system that will get initiated once a tranction is completed(eg: When ExpressCheckout completed successfully).
  • you will receive the transaction related ipn variables on your call back url that you have specified in your request.
  • You have to send this ipn variable back to PayPal system for verification, Upon verification PayPal will send a response string "VERIFIED" or "INVALID".
  • PayPal will continuously resend this ipn, if a wrong ipn is sent.

How to run?

  • Ipn Listener script is provided for different language.
  • Deploy IPN Listener script in Cloud environment or you can expose your server port using any third party LocalTunneling software , so that you can receive PayPal IPN call back.
  • Make a PayPal api call (eg: DoDirect Payment request), setting the IpnNotificationUrl field of api request class to the url of deployed IPNListener script.
  • You will receive ipn call back from PayPal.

IPN Reference

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