Anyone using Paymentech's real-time credit card validation? I'm having a problem with their service because there are circumstances where they'll send back two replies. It's due in part I think to my customers clicking twice on the Submit button, so I've got some Javascript preventing that second click, but some people's Javascript doesn't work because they've either got it turned off or they're using some funky browser. Large text saying "PLEASE JUST CLICK ONCE" is also sometimes ignored. You'd think that Paymentech would prevent this problem on their end but they're apparently incapable of doing so (trying to get them to do the slightest thing to fix anything is impossible, my recommendation is not to ever use their services if you're not already, they are an incredibly slothful and lazy bureaucracy and don't care about individual customers since they've got plenty). So my site gets two replies back from them sometimes -- this should really be no problem because after all I am recording in my DB that the first reply was received and I don't accept a second if the DB already has a record saying the first one was received. BUT what can happen is that due to the transmission latencies varying, a second reply from Paymentech can come in before the first one is finished processing and therefore there's no record in my DB yet that the first one has been received. So they both can get processed!
I'm thinking about solving this problem by creating an Application variable for each reply from Paymentech, named after the unique identifier for the transaction. This would be way faster than the DB can get a record stuffed into it. I'd simply check with each reply from Paymentech to see whether or not an application variable by the name of the unique identifier already exists or not, and process the transaction only if it doesn't. I'm writing to ask if anyone here has dealt with a dependency like this, and is my intended solution the best one? Thanks, Karl S. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Upgrade to Adobe ColdFusion MX7 Experience Flex 2 & MX7 integration & create powerful cross-platform RIAs http://www.adobe.com/products/coldfusion/flex2/ Archive: http://www.houseoffusion.com/groups/CF-Talk/message.cfm/messageid:270235 Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
