Having problems with SAML auth on IdP version 4.1.3

[Duncan Sinclair]

Hi Scott,

I don't think it's a prefetch problem -- at least my logs don't show any signs of prefetch.

I've just managed to reproduce the error, and watching the network log on Chrome there wasn't any prefetch.

What do you want to see from the Chrome network logs?

Cheers,


Duncan.

--
Duncan Sinclair
Infrastructure Specialist – Systems
Abertay University, Dundee

-----Original Message-----
From: users <users-bounces at shibboleth.net> On Behalf Of Cantor, Scott
Sent: Tuesday, 27 July 2021 2:29 pm
To: Shib Users <users at shibboleth.net>
Subject: Re: Having problems with SAML auth on IdP version 4.1.3

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On 7/27/21, 9:21 AM, "users on behalf of Duncan Sinclair" <users-bounces at shibboleth.net on behalf of d.sinclair at abertay.ac.uk> wrote:

>    I know it's difficult to reproduce, as I've tried quite a bit. The only time I've seen it was in Chrome, and I didn't
> have the developer window open at the time to see what actually happened.

That's probably Chrome doing pre-fetches. I have never reproduced that behavior, but there's nothing we can do about it if it does, that's going to trigger a replay error every time.

>    Is there anything I can do to help?

Figure out a way to reproduce it and then at least we can understand it. I have no expectation that we could fix it if that’s the cause. We can't do much about broken clients. If it's a replay issue, then you could in theory configure the IdP to ignore replay but that's about all.

I have never experienced this supposed prefetch problem in Chrome in all the years people have been complaining about it, but I don't use it often, only for testing.

-- Scott


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