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App Transport Security: changes in iOS/tvOS 17
Hello! I'm working on VLC, that is a multimedia playback app available for any platform. Among many things, we support discovery of servers on the local network using Bonjour, UPnP and NETBIOS with consecutive connections to those servers for media playback purposes. Additionally, we allow connections to unicast and multicast streams based on any domain name or IP (i.e. "rtsp://207.254.***.***"). Discovery of the mentioned services works very well with the Multicast entitlement along with NSLocalNetworkUsageDescription also on iOS 17. According to documentation, iOS 17 prohibits any IP based connections by default, which breaks the entire functionality mentioned above that was previously enabled by including the NSAllowsArbitraryLoads key with the value TRUE in Info.plist. We amended the Info.plist with the following configuration and still fail to connect to hosts in that IP range. <key>NSAllowsLocalNetworking</key> <true/> <key>NSExceptionDomains</key> <dict> <key>192.168.0.0/24</key> <dict> <key>NSTemporaryExceptionAllowsInsecureHTTPLoads</key> <true/> <key>NSIncludesSubdomains</key> <true/> <key>NSExceptionRequiresForwardSecrecy</key> <false/> <key>NSExceptionAllowsInsecureHTTPLoads</key> <true/> <key>NSExceptionAllowsLocalNetworking</key> <true/> </dict> </dict> Additionally, there does not seem to be a viable, publicly documented solution to connect to any server on the internet based on an IP address. Further, the process for IPv6 seems unclear. Any help how to solve this so we can transition to the iOS/tvOS 17 SDK in time would be very much appreciated.
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Feb ’24