I wrote these PayPal IPN code samples (ducks!!) in 2000 which I suspect still exist substantially the same in 10s of thousands of installations. https://github

I wrote these PayPal IPN code samples (ducks!!) in 2000 which I suspect still exist substantially the same in 10s of thousands of installations. https://github.com/paypal/ipn-code-samples https://github.com/paypal/ipn-code-samples I'm still amazed at how lousy http client libraries are in so many environments.