iOS 15 Breaks with custom headers

[BrainstemStudio]

Bug Report

We are busy reviewing our apps to get ready for iOS 15 changes. We have noticed when using a basic JS fetch and supplying custom headers the encounters an error. This is problematic especially if the the fetches require headers such as tokens, authorization ect.

This appears to only occur when using the scheme and host name options.

<preference name="scheme" value="http" />
<preference name="hostname" value="localhost" />

Problem

Web Error Failed to load resource: WebKit encountered an internal error

XCode Error

[Process] 0x128ad1000 - NetworkProcessProxy::didClose (Network Process 0 crash)
[assertion] Error acquiring assertion: <Error Domain=RBSAssertionErrorDomain Code=2 "Specified target process does not exist" UserInfo={NSLocalizedFailureReason=Specified target process does not exist}>

What is expected to happen?

At least a success or catch error should return on the js fetch

What does actually happen?

Xcode returns a error and the fetch does not execute

Information

We have tested a simple fetches, one without custom headers and one with custom headers. We also setup a minimal app without any plugins to isolate the issue. This issue does seem to originate from CDVWebViewEngine when scheme and hostname are used.

This all still works on iOS 14.6, so it appears to be something on iOS 15.0 that has changed.

Command or Code

What works

fetch(`https://everydaydigital.co.za/lab/tests/test.php`).then(r => {
    return r.json();
}).then(response => {
    console.log(response);
}).catch(err => {
    console.warn(err);
});

What doesn't work

fetch(`https://everydaydigital.co.za/lab/tests/test.php`,{
    headers : {
        'token' : '123456789'
    }
}).then(r => {
     return r.json();
}).then(response => {
    console.log(response);
}).catch(err => {
   console.warn(err);
});

Environment, Platform, Device

Mac OS XCode 13 Simulator

Version information

Cordova 10.0 Cordova iOS 6.2.0

Checklist

• [x] I searched for existing GitHub issues
• [x] I updated all Cordova tooling to most recent version
• [x] I included all the necessary information above

[timbru31]

This probably should be reported to Apple (Feedback App) and/or the WebKit team (https://bugs.webkit.org)

[NiklasMerz]

Probably like the issue that I filed https://bugs.webkit.org/show_bug.cgi?id=226769

[timbru31]

Which is hopefully fixed in beta 2 and/or public beta 1.

[BrainstemStudio]

Great to know. Thanks.

[idoodler]

The Bug Report indicates that it has been fixed and is available in iOS 15 Beta 2, I checked with the second Beta 2 today and I still have the same issue. Can anyone confirm this?

[NiklasMerz]

The CORS error I reported is fixed. My app works with the latest beta.

[NiklasMerz]

I just updated to the latest beta and it's broken again unfortunately. I commented on the WebKit bug again.

Let's hope the next betas are working again.

[jesusfloresivelopment]

Hi guys, I have the same problem, do you have any solution?

[NiklasMerz]

We need to wait until Apple releases a fixed version.

[BrainstemStudio]

@NiklasMerz I see this is been fixed in the latest beta release. I can confirm that custom headers work based on my reported example. I can further confirm that our cordova apps are working when run from xcode 13 / iOS 15 beta 4.