Unexpected "object moved to here" header injected into page

In 12.1 sometimes we are seeing a strange header injected into the page

<html>
<head>
<title>Object moved</title>
</head>
<body>
<h2>Object moved to <a href="/user/onboarding?ReturnUrl=%2Ff%2Fdiscussions%2F29185%2Ftest-shadow">here</a>.</h2>

Has anyone else seen this or have ideas what is injecting it into the page

0 Karl Barber over 2 years ago

Ah sorry, seems to be related to a redirect, but has only started since upgrading to 12.1

I have seen some strange behaviour with redirects since upgrading to 12.1 so I guess its related

stackoverflow.com/.../redirect-returns-object-moved-to
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0 Ben Tiedt over 2 years ago in reply to Karl Barber

Karl Barber said:
I have seen some strange behaviour with redirects since upgrading to 12.1

What strange behaviors have you seen?
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0 Karl Barber over 2 years ago in reply to Ben Tiedt

Hi Ben, Ive sent you a mail

It's to do with response.redirect() and response.end() no longer terminating processing so unexpected things can happen

e.g.

in vps saml handler if auth is all ok it should redirect to the oauth endpoint, which all looks to be ok code wise

//redirect to the oauth endpoint
var url = oAuthUrl.Uri.AbsoluteUri;
context.Response.Redirect(oAuthUrl.Uri.AbsoluteUri);
context.ApplicationInstance.CompleteRequest();
context.Response.End();

but the flow no longer ends with the response.end() and continues into a catch all exception even for valid responses
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