How do I sell downloadable install file?

[dtribble]

Hi all,
I want to be able to let my users pay for a program and then download and install it. I'm using Verisign's payflow link for payment. My site is built using asp.net.

A few questions:

- How can I make it so users can only get/download the .exe file once they have paid?

- How can I hide the url of the download from the user so they don't download it again and again?

-Anything else I should keep in mind as I do this? The file is fairly large. Do I need to put it on mirror sites?

Thanks for any help you can offer...

-Damon

[ziggystardust]

Hi dtribble,

I don't know the answer to your questions, but I've got another suggestion for you.

One solution could be to let anyone download the .exe and check for a valid license key once they try to install it.

Ie. once the customer pays for the software, a key is generated for them and stored in a database of paid-for licenses. They download the software and start the installer. The installer then asks them for a key, checks the key against the DB and starts installing (or not).

Good luck
//ZS

[morpheus83]

I think making sessions which kill themselves once the user clicks the download now link.