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I want to filter users browsing activity based on response content.I started by implementing a simple NEFIlterDataProvider extension based on docs and official iOS-samplesAfter that, I tried everything I could find here and in SO threads, but I can't make breakpoints or output work.https://forums.developer.apple.com/thread/11241https://forums.developer.apple.com/thread/9775I have tried all the debugging methods mentioned in the topics above, but I don't see any triggered breakpoints or any output in the device consoleHere is the simplest extension code, but I can’t debug it anywayimport NetworkExtension import os.log class FilterDataProvider: NEFilterDataProvider { override func startFilter(completionHandler: @escaping (Error?) -> Void) { // Add code to initialize the filter. os_log("---------------------FOR LOGGING----------------------") completionHandler(nil) } override func stopFilter(with reason: NEProviderStopReason, completionHandler: @escaping () -> Void) { // Add code to clean up filter resources. os_log("---------------------FOR LOGGING----------------------") completionHandler() } override func handleNewFlow(_ flow: NEFilterFlow) -> NEFilterNewFlowVerdict { print("new flow: \(flow)") os_log("---------------------FOR LOGGING----------------------") // Add code to determine if the flow should be dropped or not, downloading new rules if required. return .drop() } }Even with .drop() response handling I still can browse freely so looks like it doesn’t work for me.Here are my entitlements and a part of info.plist.<dict> <key>com.apple.developer.networking.networkextension</key> <array> <string>app-proxy-provider</string> <string>content-filter-provider</string> <string>packet-tunnel-provider</string> </array> <key>com.apple.security.application-groups</key> <array> <string>group.ArunBuduri.urlFetcher</string> </array></dict></plist>Info.plist<key>NSExtension</key><dict> <key>NSExtensionPointIdentifier</key> <string>com.apple.networkextension.filter-data</string> <key>NSExtensionPrincipalClass</key> <string>FilterDataProvider</string></dict>When I try to connect XCode to a running extension, I always have "waiting to attach to "extension name' on device" message.I have a supervised device but I didn't do any additional profile customization or something like that.I'm working with 10.2.1 XCode, but I tried to debug it on different versions including 8x.My host app is just a VC with a link to a site to test the extension. I tried to connect extension to my host application and browsers, filter extension is added to the Embed Binaries, and I have no idea what I'm doing wrong. Maybe I need to extend my host application functionality or do some work with my device's profile to enable content filter?I will be glad to any comment or advice, thanks.