This repository contains samples in multiple languages for validating PayPal IPN messages.
The Payment Card Industry (PCI) Council has mandated that early versions of TLS be retired from service. All organizations that handle credit card information are required to comply with this standard. As part of this obligation, PayPal is updating its services to require TLS 1.2 for all HTTPS connections. At this time, PayPal will also require HTTP/1.1 for all connections. Click here for more information
Please note that calls from the PayPal IPN Simulator cannot be validated.
You must create a PayPal sandbox account. IPN calls from the sandbox after a test transaction is performed will be validated providing you set your IPN validation endpoint to the sandbox URL.
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