Paypal IPN Verification

[hdog]

I am building a verification page that will post back the IPN string from Paypal as one part of the validation process. I am writing my code in jscript which is embedded in an asp page. I am stumped on how the page automatically posts the IPN string back to Paypal. I found some code on the Paypal site that does just this but it appears it is written in Java, not Jscript and I don't know how to write anything equivalent. Can anyone help me?

Here is the portion of the code I am stumped on:

// post back to PayPal system to validate
// NOTE: change http: to https: in the following URL to verify using SSL (for increased security).
// using HTTPS requires either Java 1.4 or greater, or Java Secure Socket Extension (JSSE)
// and configured for older versions.
URL u = new URL("

http://www.paypal.com/cgi-bin/webscr");

URLConnection uc = u.openConnection();
uc.setDoOutput(true);
uc.setRequestProperty("Content-Type","application/x-

http://www-form-urlencoded");

PrintWriter pw = new PrintWriter(uc.getOutputStream());
pw.println(str);
pw.close();

 

[jemminger]

that is their java/jsp code example.

technically you probably could do it in javascript using XmlHttp in IE or XmlHttpRequest in Mozilla, but you'll probably want to use some sort of server-side language such as jsp or php if you're going to be processing paypal payments. this way any sensitive information won't be available via view-source, and furthermore you won't have database connectivity readily available with javascript


-jeff

http://www.jeffemminger.com

try { succeed(); } catch(E) { tryAgain(); } finally { rtfm(); }
i like your sleeves...they're real big

 

[hdog]

Thanks for the reply jemminger!

Do you have any sample code you could post in jsp?

 

[jemminger]

your example there off the paypal site *IS* jsp

-jeff

http://www.jeffemminger.com

try { succeed(); } catch(E) { tryAgain(); } finally { rtfm(); }
i like your sleeves...they're real big