Apple Watch Device crashing with SandboxViolation

Question

Im having an issue on the Apple Watch when making network calls.

It works fine on the simulator but when deployed to the device I see this in the device logs:

MyAppleWatch kernel(Sandbox)[0] : SandboxViolation: MyWatchApp(203) deny(1) network-outbound /private/var/run/mDNSResponder

The code for making the call is done using refit and works on the simulator so I would imagine it is not the cause but I will post it if necessary.

I have set these values in the Info.plist of the WatchExtensionApp (and not set them in the WatchApp as these keys )

<key>NSAppTransportSecurity</key>
<dict>
    <key>NSExceptionDomains</key>
    <dict>
        <key>my.domain.com</key>
        <dict>
            <key>NSExceptionRequiresForwardSecrecy</key>
            <true/>
            <key>NSExceptionAllowsInsecureHTTPLoads</key>
            <true/>
            <key>NSIncludesSubdomains</key>
            <true/>
        </dict>
    </dict>
    <key>NSAllowsArbitraryLoads</key>
    <true/>
</dict>

I set the WatchApp and WatchExtensionApp to:

Just at a bit of loss as to what to try next. Any help would be greatly appreciated.

Answer 1

Ok I got it working, Firstly I changed my Info.plist to:

<key>NSAppTransportSecurity</key>
<dict>
    <key>NSExceptionDomains</key>
    <dict>
        <key>my.domain.com</key>
        <dict>
            <key>NSExceptionRequiresForwardSecrecy</key>
            <false/>
            <key>NSExceptionAllowsInsecureHTTPLoads</key>
            <true/>
            <key>NSIncludesSubdomains</key>
            <true/>
        </dict>
    </dict>
</dict>

I had to change all my network calls to us NSUrlSession rather than using Refit + HttpClient. So I assume there is something in the HttpClient that watchOS doesn't like or watchos only works with NSUrlSession. Anyway here is a sample of one of my calls:

    public async Task<HttpResponse> MakeCall(NSMutableUrlRequest request)
    {
        var result = new HttpResponse();
        var config = NSUrlSessionConfiguration.DefaultSessionConfiguration;
        var session = NSUrlSession.FromConfiguration(config);

        var resultUser = await session.CreateDataTaskAsync(request);
        var response = resultUser.Response as NSHttpUrlResponse;
        if (response != null)
        {
            result.StatusCode = (int)response.StatusCode;
            result.Content = NSString.FromData(resultUser.Data, NSStringEncoding.UTF8).ToString();
        }
        return result;
    }

    public async Task<HttpResponse> GetStuffWithParameter(string parameter, string authorization)
    {
        var url = new NSUrl($"https://www.domain.com/api/stuff/{parameter}");

        var header = new NSMutableDictionary();
        header.SetValueForKey(new NSString(authorization), new NSString("Authorization"));
        header.SetValueForKey(new NSString("application/json"), new NSString("Content-Type"));

        var request = new NSMutableUrlRequest(url)
        {
            Headers = header,
            HttpMethod = "GET"
        };

        return await MakeCall(request);
    }

    public class HttpResponse
    {
        public int StatusCode { get; set; }
        public object Content { get; set; }
    }

Hope this helps.