Problems With PayPal Checkout

This has been working but for some reason it doesn't anymore. If the customer pays by credit card it all works fine. But if they select PayPal it fails. I've traced the problem to the confirm.php file where the ReturnURL & CancelURL values are set. If I have them set like so:

$WA_PP_ECO_Set_params[0][$nextIndex] = "ReturnURL";
$WA_PP_ECO_Set_params[1][$nextIndex] = "https://www.championnutrition.net.nz/pp_confirm.php";
$nextIndex = count($WA_PP_ECO_Set_params[0]);
$WA_PP_ECO_Set_params[0][$nextIndex] = "CancelURL";
$WA_PP_ECO_Set_params[1][$nextIndex] = "https://www.championnutrition.net.nz/cart.php?ppcancel=1";
$nextIndex = count($WA_PP_ECO_Set_params[0]);

I get a "Not Found" error because the eCart is trying to go to the following URL:

https://www.championnutrition.net.nz/https://www.paypal.com/checkoutnow?token=

If I have ReturnURL & CancelURL values set like this:

$WA_PP_ECO_Set_params[0][$nextIndex] = "ReturnURL";
$WA_PP_ECO_Set_params[1][$nextIndex] = "pp_confirm.php";
$nextIndex = count($WA_PP_ECO_Set_params[0]);
$WA_PP_ECO_Set_params[0][$nextIndex] = "CancelURL";
$WA_PP_ECO_Set_params[1][$nextIndex] = "cart.php?ppcancel=1";

You are redirected to the "Transaction Failed" page and the following error messages:

Transaction refused because of an invalid argument.
ReturnURL is invalid.
CancelURL is invalid.

I can't seem to win either way.

I'll need to troubleshoot directly, see the private message section.

See PM

I Updated the web assist/framework/library.php file to fix this.

Thanks for that Jason. Was this a known issue? Just would like to know for future reference.

It is a bug that has been fixed in the most recent eCart version.

There is still an issue with this, if a client successfully makes a payment using their credit card they are redirected to http://checkout_success.php instead of http://domainname.com/checkout_success.php.

The code that controls the redirect is on the confirm.php page on line 195:

$WAGatewayResponse = PP_DirectPayment_Post($PP_DirectPayment_required,$PP_DirectPayment_itemized,$PP_DirectPayment_optional);
if ($WAGatewayResponse) {
$eCart1->redirStr = "checkout_success.php";
}
else if ("checkout_failure.php" != "") {
header("Location: ". "checkout_failure.php");
exit();
}

If I change the redirect to "http://domainname.com/checkout_success.php"

You are directed to "http://http://domainname.com/checkout_success.php"

If I change it to "domainname.com/checkout_success.php"

You end up at the shopping cart, where it is saying that the cart is empty.

you should be using:
domainname.com/checkout_success.php

for the success redirect.

the shopping cart empty is being caused by domain switching between using the www address and returning to the none www address. In order words, you are adding the items to the cart using:
www.domainname.com/products.php

and then returning to the non www address:
domainname.com/checkout_success.php

this is a different browsing session. to prevent this you can use mod rewrite and hataccess to force the www address, see the following page for details:
http://www.htaccessbasics.com/force-www-nonwww-domain/

This post has been deleted.

Is it OK to use www.domainname.com? I did the rewrite and this did work when typing it in the browser address bar like so http://domainname.com/filename.php redirected to https://www.domainname.com/filename.php but when I did a test purchase it redirected as before. After changing the the redirect to www.domainname.com it worked.