I have read a lot of articles regarding universal links but still i need to be clear regarding few things.

I have to add universal links to `http://www.domain.com` but due to certain reasons i will not be able to make my website SSL certified or even put apple-app-site-association with https in root folder. So I thought of doing this in a different way, i will put `apple-app-site-association` file in the root of a subdomain, lets say `https://www.app.domain.com/apple-app-site-association`

Then i will open every universal link with that subdomain whenever universal link is available and redirect `https://www.app.domain.com` to `http://www.domain.com` if universal link is not available.

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Questions in my mind :-

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> 1. apple says - *file needs to be accessible via HTTPS—**without any redirects**—at https:///apple-app-site-association*. 
>  In this line what does apple mean by without any redirects ?
> 2. when apple does not find any universal link related to a particular URL, will it itself redirects it to safari.
> 3. Is this a safe way to add universal links or is it necessary to have our main domain on https or at-least **apple-app-site-association** on https
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