default TLS Trust evaluation failed for iOS development with webapis on local machine listening to the IP

Question

I am new to iOS/SwiftUI development but am trying to develop an app and webapis on my MacBook Pro. I am using VSCode and C# on the backend and calling the webapis from the iPhone simulator.

I have a localhost certificate in my Keychain with a Subject Alternative Name of the ip for my local machine (10.0.0.5). I have this working with Android using 10.0.2.2 (emulator localhost for computer hosting the emulator), so I know it does work.

I can also run the API from the browser using 10.0.0.5 and get the results.

When I run from the simulator I get these error:

2022-01-15 18:05:03.352411-0500 TestApp[24757:274897] [Unknown process name] copy_read_only: vm_copy failed: status 1. calling loadData... loading data... 2022-01-15 18:05:06.008842-0500 TestApp[24757:274902] Connection 1: default TLS Trust evaluation failed(-9807) 2022-01-15 18:05:06.009049-0500 TestApp[24757:274902] Connection 1: TLS Trust encountered error 3:-9807 2022-01-15 18:05:06.009148-0500 TestApp[24757:274902] Connection 1: encountered error(3:-9807) 2022-01-15 18:05:06.010008-0500 TestApp[24757:274902] Task <17311174-24FF-403A-AA1B-4894D097FB41>.<1> HTTP load failed, 0/0 bytes (error code: -1202 [3:-9807]) 2022-01-15 18:05:06.013874-0500 TestApp[24757:274896] Task <17311174-24FF-403A-AA1B-4894D097FB41>.<1> finished with error [-1202] Error Domain=NSURLErrorDomain Code=-1202 "The certificate for this server is invalid. You might be connecting to a server that is pretending to be “10.0.0.5” which could put your confidential information at risk." UserInfo={NSLocalizedRecoverySuggestion=Would you like to connect to the server anyway?, _kCFStreamErrorDomainKey=3, NSErrorPeerCertificateChainKey=( "<cert(0x7fbef400f200) s: localhost i: localhost>" ), NSErrorClientCertificateStateKey=0, NSErrorFailingURLKey=https://10.0.0.5:5001/WeatherForecast, NSErrorFailingURLStringKey=https://10.0.0.5:5001/WeatherForecast, NSUnderlyingError=0x6000023c6490 {Error Domain=kCFErrorDomainCFNetwork Code=-1202 "(null)" UserInfo={_kCFStreamPropertySSLClientCertificateState=0, kCFStreamPropertySSLPeerTrust=<SecTrustRef: 0x600001c58500>, _kCFNetworkCFStreamSSLErrorOriginalValue=-9807, _kCFStreamErrorDomainKey=3, _kCFStreamErrorCodeKey=-9807, kCFStreamPropertySSLPeerCertificates=( "<cert(0x7fbef400f200) s: localhost i: localhost>" )}}, _NSURLErrorRelatedURLSessionTaskErrorKey=( "LocalDataTask <17311174-24FF-403A-AA1B-4894D097FB41>.<1>" ), _kCFStreamErrorCodeKey=-9807, _NSURLErrorFailingURLSessionTaskErrorKey=LocalDataTask <17311174-24FF-403A-AA1B-4894D097FB41>.<1>, NSURLErrorFailingURLPeerTrustErrorKey=<SecTrustRef: 0x600001c58500>, NSLocalizedDescription=The certificate for this server is invalid. You might be connecting to a server that is pretending to be “10.0.0.5” which could put your confidential information at risk.} Invalid data

I followed the instructions from this post to put the NSExceptionDomain I am using. I am having trouble digesting the Overriding TLS Chain Validation Correctly. I followed this thread on Swift 5.1 UIWebView Does not View URL because of untrusted Certificate as well. Also, iOS app ignoring NSAppTransportSecurity.

My Info.plist has this in it:

<key>NSAppTransportSecurity</key>
<dict>
    <key>NSAllowsArbitraryLoads</key>
    <true/>
    <key>NSExceptionDomains</key>
    <dict>
        <key>https://10.0.0.5:5001/WeatherForecast</key>
        <dict>
            <key>NSExceptionAllowsInsecureHTTPLoads</key>
            <true/>
            <key>NSIncludesSubdomains</key>
            <true/>
        </dict>
    </dict>
</dict>

I tried a variety of combinations for the key from 10.0.0.5 to https://10.0.0.5:5001/WeatherForecast.

UPDATE

I tried this Domain=NSURLErrorDomain Code 1202 as well, exporting the .cer from keychain and installing it on the emulator, but I still get the same error: