IOS keep asking password with nginx auth_basic

[J. Lewis Muir]

On 10/17, tiendungitd wrote:
> any idea about this issue?

Are you serving over HTTPS?

Are you positive that you are *not* serving any content over HTTP from
HTTPS?

Can you create an MCVE (minimal, complete, and verifiable example) for a
".txt" file over HTTP?  For a ".txt" file over HTTPS?  For a ".ivp" file
over HTTP?  For a ".ivp" file over HTTPS?

In your Pastebin access log, I see occurrences of "$1" in your requests.
Is that intentional, or is that a bug?

What Content-Type header field are you sending in your response to the
request for a resource ending in ".ivp"?

Can you try adding a user name and password for the website on the iPad
under Settings > Passwords & Accounts > Website & App Passwords?

What happens if you try Firefox and Google Chrome on the iPad?  Do they
work?

Lewis