[OT] Server doesn't send response code

[Mark Schonewille]

Hi Jacque,

Where exactly is the CGI sending the return message? The URL should start with ssl://www.sandbox.paypal.com/...

I do this with PHP and that has worked fine for years.

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Mark Schonewille

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On 29 apr 2012, at 05:34, J. Landman Gay wrote:

> I'm not sure who to ask about this. If someone knows where the problem is, I'll ask in an appropriate forum somewhere.
> 
> I've implemented PayPal's Instant Payment Notification system using an old-style CGI on my (non-rev) server. It works fine. Paypal sends a notification, my cgi responds, Paypal sends "validated", and I process the order. The data always comes in and I always get the validation response. That should be the end of it.
> 
> But PayPal's sandbox test tool consistently shows an error and replies "IPN delivery failed. Unable to connect to the specified URL. Please verify the URL and try again." Obviously it did find my server and URL, because my script received the data and has responded back to Paypal, which in turn has responded with a validation.
> 
> So I set up a test button on a fake web page and used their sandbox accounts to "buy" from myself. Paypal sends its message, my cgi gets the data, sends it back, it's validated, and then Paypal starts resending the notification every 2 minutes forever until I turn off the system. The IPN docs say Paypal will resend notifications until it gets a response. When I look at the IPN history, there is no server response code for any of the messages (it should be 200.) The response code field is just empty.
> 
> So I think what's happening is my server isn't acknowledging receipt of the messages, which causes Paypal to think it can't reach me, and it keeps resending.
> 
> Is the problem a header I should be using? A server problem? Some kind of block somewhere? ISP setup? Anyone know where I should start looking?
> 
> -- 
> Jacqueline Landman Gay         |     jacque at hyperactivesw.com
> HyperActive Software           |     http://www.hyperactivesw.com