Error: An IPN has Failed Validation using Paypal Sandbox

I can confirm that I also had issues trying to get the paypal WPS to work. Paypal received the recurring order and the payment went though and setup a recurring profile on paypal but when I was directed back to my site it got to a page with a loader and just hung. ie My site never got the payment success info from Paypal. How do I check the watchdog messages to make this more useful?

I have just realised I was testing locally, maybe this is the problem. I will test on my server and see If that helps.

Thanks
Andy

I am not using the paypal gateway, someone with knowledge should try to solve this bug.

Andrew, as you say, the payment is successfully being processed and the problem is with the information getting back to the site. I would like to help solving this issue, but I need your collaboration. I would need you to go to paypal documents and check whether there has been some change in the past times on the kind of information paypal is returning to sites after payments are processed. I imagine the problem should come from some change in the paypal API return values. If you can do this, I will try to check if the module needs to be updated.

Thanks Farreres. Is it not that I was testing locally? Should I not test on my production server first and then get back to you?

Well, you should of course test in some environment where your install can contact paypal engine. Otherwise the errors are meaningless.

I have been getting this error on my sandbox as well, I pulled my hair out all afternoon trying to get it work with Drupal and in the end I rewrote function verify() in ms_paypal_wps_class to use Curl following the example code Paypal provides (https://github.com/paypal/ipn-code-samples/blob/master/paypal_ipn.php) and...

It worked. No more Bad Request 400 etc, finally I have a successful IPN verification.

I think the error is coming from drupal_http_request(), but debugging the result is horrible and I just can't see where things are going wrong.

Not sure if the other maintainers see an issue with this (using curl), but I can do some more testing and post a patch for discussion.

Yes, usually when you follow the instructions given by processors surprisingly you find that they work! Please, do the tests you consider appropriate and post here the patch, I will apply to dev and include it in the next stable release.

Heres the patch using curl, I have tested this:

• PayPal Sandbox with File Download and Membership Suite
• PayPal Live with File Download.

I would love to see this issue fixed, it's a very long standing issue with this gateway, I've been plagued by IPN issues over the years :/

I'm not sure about my watchdog messages etc, thats one area that might need some eyes specifically.

I would like to commit this please (when RTBC), I am a maintainer and would prefer to commit my own patches.

Cheers.

Go ahead, Jeff, you are maintainer of the module, you can apply the patch.

By the way, when you do, can you check why dev release is not being rebuilt?

Has this been committed? Running some tests and would love to do the same setup. Membership, PayPal. Recurring payments.

No, we need a proper code review and preferable someone (other than me) to test in both live and sandbox environments.

I have done this, quite extensively in a live site - the past few weeks it has worked flawlessly. I'm tempted to commit it but I feel a bit uncomfortable without at least one other person testing it - call it my natural Drupal developer reticence :)

I will test out the patch. I would love to get this working correctly.

@surfkid can you apply the patch, if thats an issue I can post the file, it's only one file to replace.

Thanks Jeff.
I applied the patch.
I tested it also before I uploaded the patch file and it worked. I didn't get the IPN errors.
I will tested with the patch as well. And didn't notice a difference.

I tested it also before I uploaded the patch file and it worked. I didn't get the IPN errors.

Was that in a live site or the sandbox? Many of us experience issues with Paypal sandbox only.

It was a live site.

I has to be tested with PayPal sandbox, that is where everyone has encountered issues.

Hi Jeff,
Does this patch work if applied to moneyscripts module without upgarding to moneysuite.
We have a client whose site has exact same issue, please let me know.

Your help would be appreciated.

Regards
vinay

@Mrvinay99 Actually I have no idea. I should clean it up (I can see rouge whitespace) and commit it, I've been using this for ages now and no issues at all. You might want to consider upgrading or at least trying it, for me it was surprisingly painless.

First of all thanks for your reply jeff, I tried it on my live test site, I applied it without upgrading the old money scripts module because when i tried to upgrade the module on local setup of client site it wasn't functioning properly.

Jeff can u please add the patch that can work with moneyscripts module as well.

Your help would be highly appreciated.

Jeff can u please add the patch that can work with moneyscripts module as well.

No because I don't have this project in any version control system currently.

Oh ok, jeff i hope u can fix it if i can provide you the code base of the 'Moneyscripts' module which we are using now, if yes, please let me know what all you will need from my side.

My time is limited to supporting this module as best I can, sorry but I provided a fix for this issue in this module - why don't YOU apply this patch to our module and take the file from there? Instead you're asking me to do all the work - pretty rude don't you think?

I am sorry jeff if you felt that way, but i tried all of that what you're saying, didn't worked as i mentioned earlier, somehow i'll try to figure it out.
Thank you for your precious time.

I'm gonna RTBC my own patch, I know this is working well in my site and others. Lets get it committed.

Hi Jeff,
The patch works fine but now user isn't created and process status remains pending for both transactions, With sandbox accounts and then again with registered buyer and merchant accounts of paypal.

I attached screenshots for reference, any help would be appreciated.

@Mrvinay99 doesn't seem related, if you have an issue with this module better to open a new issue. This issue is about IPN failures when using the PayPal sandbox.

@jeff my fault, I told him to post here because I thought it was related to this issue.

We wouldn't know for sure unless an IPN failure is confirmed, since it just says payment pending, whether thats because of an IPN failure I don't know. The thank-you page is showing with "done", so that tells me surely the IPN was received (I have to check, but I think that is that is the case). When an IPN fails that page just never loads, the site hangs and never advances to done.

Seems like the patch in #9 was not committed to dev? I can't apply the patch to current version or the dev version either.

same issue: https://www.drupal.org/project/moneysuite/issues/3048379

Ok, I'll patch as soon as I have some free time.