breautek commented on issue #1299:
URL: https://github.com/apache/cordova-ios/issues/1299#issuecomment-1477133467
> Thanks for your support... talking about the request from my app to my
server to a file php there isn't problem because this is my php code:
>
> ```
> <?php
> header('Access-Control-Allow-Origin: *');
> ...
> ```
>
> my problem is only when I want read an image file to download... as
example: https://www.mySite.xx/img/logo.jpg https://www.mySite.xx/img/img1.jpg
https://www.mySite.xx/img/img2.png ... ecc
>
> in this case how I can do to not have CORS problem?... I can't write in a
binary file...
If you're responding with the header `Access-Control-Allow-Origin: *` on
both the `GET` and the `OPTIONS` requests and it still isn't working with the
native XMLHttpRequest/fetch APIs, then you might be hitting an issue I
mentioned:
> I've had issues with this method on older iOS devices however (pre iOS
10). I haven't actually tested if it works properly on iOS 11+.
I know for certain that iOS 10 and earlier didn't properly support
wildcards, and based on what you're telling me that might still be the case
with current iOS versions. If that's the situation then the proper solution
would be to return the domain as read from the `Origin` request header, which
would simulate a wildcard behaviour.
> Install
[cordova-plugin-wkwebview-file-xhr](https://github.com/oracle/cordova-plugin-wkwebview-file-xhr)
and
[cordova-plugin-wkwebviewxhrfix](https://github.com/TheMattRay/cordova-plugin-wkwebviewxhrfix)
plugins
Using these plugins can work as well. They generally work by overwriting the
browser's HTTP apis so that requests are made using the native HTTP layer
rather than the browser's HTTP layer. This works because the native device HTTP
APIs are not bounded by CORs since CORs is a browser concept. However, this is
working around CORs instead of being CORS compliant.
If this is the solution you have decided to go with however, I'll close this
issue.
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