User Profile

We have an iOS/iPadOS app that uses the ImageCaptureCore framework to communicate with PTP cameras. The same app also works with the 'macOS Catalyst' destination. But we like to deprecate the use of macOS Catalyst and then use 'Designed for iPad' destination instead. But when I use this destination then no cameras are provided to the app (ICDeviceBrowser)! :( I've noticed that on iOS devices the 'Settings app' usually shows that our app is allowed to use 'Camera'. But this possibility doesn't appear when the destination is 'Designed for iPad'. To my understanding below entitlements are used for a 'real' macOS app (including Catalyst), but I have added it anyway with: com.apple.security.device.camera com.apple.security.device.usb com.apple.security.personal-information.photos-library all set to YES and also the same privacy-related entries needed for iOS. Any pointers would be appreciated, thanks! :) macOS 14.1.1; Xcode 15.0.1

We have an issue with creating an ordinary TCP socket connection to a device that is connected on a link-local net (simple peer to peer Ethernet). Our code is in C++ and we use the normal POSIX socket API. The scenario is like this: We have a device with ordinary Ethernet connected to a USB-Ethernet adaptor. We plug in the USB-Ethernet adaptor in a Mac or iPad. The device establishes link-local IP address and announces a service via mDNS/DNS-SD The Mac/iPad Bonjour system picks up the device service and we get the information in our app. Our app want to connect to the service using a normal TCP socket connection to the device's link-local address. So far this is normal and working as expected. However from here something unexpected happens: We create a "socket()" and do a "connect()".  WireShark shows that the TCP connection is established on the correct interface, with the correct destination IP/port, but with a source IP/port from a different interface. Fx. the TCP SYN from the Mac has destination ip 169.254.5.253 (correct) but source IP 192.168.1.101 (wrong - that IP does not exist on that interface). Consequently the TCP connection never get established. Workaround: We have found out that using "bind()" to bind the socket to a specific source link-local IP on the relevant interface works. Then the TCP SYN comes out with correct source IP. However binding an outgoing TCP that is a very unusual thing to and we are surprised that it doesn't just work without it. Other information: Parts of this issue seems to be timing related. Without the "bind()" it sometimes works if we retry the connect after timeout. Occasionally it works the first time. Having a Ethernet switch in between also sometimes helps. Have we missed something or is this a problem in macOS/iOS? Thanks! :)

Hello there 🤓 We have this elderly QuickLook plugin that I am trying to revive for Big Sur... (Well, it seems to be a problem on Big Sur only.) The thing is that it uses NSTemporaryDirectory(). This directory can be written to when built locally in Debug/Release configuration. But when doing an Archive/Notarized builds the plugin cannot write to the directory. I have here found that in this case it gets its NSFileExtendedAttributes set to com.apple.rootless! So somehow System Integration Protection (SIP) kicks-in! I have found two workarounds: If I disable SIP ($ csrutil disable from Recovery mode) then it works. If I enable the Hardened Runtime exception 'Allow DYLD Environment Variables' then is also gets write access to the temp directory. My question is: Can one give a proper explanation for why SIP kicks-in? Could we have misconfigured something? Let me know if you need additional information, thanks. Best regards, Jens Schwarzer.

Hello 🙂If you start a workout in Apple Watch HealthKit then you can get the heart rate from HealthKit, which is fine.But is it possible to start a workout so that HealthKit will also get Heart Rate Variability samples (including Beat-to-Beat Measurements that has become available in watchOS 6)?I only see them get stored in HealthKit when using Apple's Breathe app... and so it seems not really possible to make your own app to get those measurements... 😟Cheers!