Amphtml: AMP-Redirect-To doesnt work anymore?

[baert93]

Hi, since yesterday no amp redirect via php is working anymore.
header("AMP-Redirect-To: https://littlehelps.de/index.php");
exit();
I didnt change anything at my code and it worked fine all the time so i assume that you updated something?

What browsers are affected?

all browsers on all devices

Which AMP version is affected?

amp-version="1911042323000"

[aaron-renovationbrands]

We can confirm the same behavior.

[aaron-renovationbrands]

Anyone care to comment why this quit working?
Is it related to another issue?

[nainar]

@aaron-renovationbrands @baert93 can we get a link to a live page that is down?

[aaron-renovationbrands]

https://www.americantinceilings.com/pattern6/

Not "Add to Cart" here, the post action is on the slider(interstitial) titled "Skip & Continue To Cart" .
Products add to cart (navigate manually).

[caroqliu]

Thanks for reporting the issue! This is the PR to revert: #25470

[nainar]

The fix has landed in master. We are verifying the fix and will be rolling out to production ASAP.

[caroqliu]

@aaron-renovationbrands @baert93 Can you confirm that the behavior is restored on your respective pages?

[aaron-renovationbrands]

Working.
Thanks!!

[caroqliu]

The issue is resolved since #25470 hit production, post mortem on cherry-pick #25473 to follow.

[baert93]

yeah its working fine, ty for the fast solution!

[caroqliu]

@baert93 Could you still provide the steps to reproduce on your website? It would be great to have as much information as possible for the post mortem.

[baert93]

Of course! Ill try to explain it with the login-page.

• https://littlehelps.de/login.php after submitting the email and pw with the amp-form you land on another php file where i check the email and pw with the database
• if everything is fine ill set a cookie and link you back to the startpage with:
  setcookie('testcookie','test'); header("AMP-Redirect-To: https://littlehelps.de/index.php?login=success"); exit();
• the problem was that i never left the login page but the login-process still executed succesfully, so the cookie was set but the redirection didnt work
  I hope the explanation is understandable!
  Greetings Robert