Dear Apple: 1、We want to create a socket application using the C language interface on the WiFi Aware channel, utilizing native socket APIs such as socket, connect, bind, etc., to transmit data through the established WiFi Aware channel. However, we wrote a demo and tested it. On the iOS side, when initiating a socket connect, we received error code 65. We also used the IPv6 protocol. We would like to ask for help: Is it impossible to use native socket APIs for programming on the WiFi Aware channel? 2、If native sockets are not available, which interfaces are recommended for WiFi Aware communication on iOS? Thanks.

When using AccessorySetupKit to remove accessories, a pop-up window appears when calling removeAccessory. However, the text in the pop-up window does not change according to my iPhone's language settings and remains only in English. Has anyone encountered this issue? Does Apple have any plans to address this compatibility issue?

1、I want to use AccessorySetupKit for Wi-Fi Aware pairing and connection, but on iOS 26.5, it prompts that this device does not support Wi-Fi Aware. However, it works normally after upgrading to iOS 27. I would like to confirm whether using Wi-Fi Aware with AccessorySetupKit requires iOS 27 or later? 2、When using AccessorySetupKit to perform PIN code pairing with an accessory via Wi-Fi Aware, is the PIN code only required for the first pairing, and not needed for subsequent connections? Does this PIN code have an expiration time?

We are currently investigating a serious issue related to Wi-Fi Aware and AccessorySetupKit. We found that some devices which originally supported Wi-Fi Aware may suddenly report that Wi-Fi Aware is not supported. After this happens, calling the following API fails: ASAccessorySession.showPicker(for:completionHandler:) API documentation: https://developer.apple.com/documentation/accessorysetupkit/asaccessorysession/showpicker(for:completionhandler:) The error returned is: Error Domain=ASErrorDomain Code=450 "Current device is not Wi-Fi Aware capable.” Related logs: error: Error Domain=ASErrorDomain Code=450 "Current device is not Wi-Fi Aware capable." 21:27:33.116061+0800 deviceaccessd Activating DASession: CID 0x7FC70001, BundleID xxxx, PID 542, WiFiAwareSupported: no 2026-05-26 21:27:33.118<103>21:27:33.118[E][WiFiAware::WA]@"":[ASK] showPicker callback error: Error Domain=ASErrorDomain Code=450 "Current device is not Wi-Fi Aware capable." UserInfo={ NSDebugDescription=Current device is not Wi-Fi Aware capable., cuErrorMsg=Current device is not Wi-Fi Aware capable., NSLocalizedFailureReason=Current device is not Wi-Fi Aware capable. } Device information: Device: iPhone 16 Pro OS Version: 26.5 The device was previously able to use Wi-Fi Aware successfully. However, after the issue occurs, the system reports: WiFiAwareSupported: no The only known way to recover so far is to erase all content and settings / factory reset the device. This is not an acceptable workaround for end users and may cause a severe user experience issue. We would like to ask for your help with the following questions: Under what conditions would an iPhone that supports Wi-Fi Aware suddenly be reported as not Wi-Fi Aware capable? Is WiFiAwareSupported: no determined by hardware capability, system configuration, region setting, privacy/security policy, entitlement state, or some cached system state? Is there any known issue in AccessorySetupKit or Wi-Fi Aware on iOS 26.5 that could cause this behavior? Is there a way to recover the Wi-Fi Aware capability without requiring a factory reset? Are there any additional logs, sysdiagnose profiles, or diagnostic commands you recommend us to collect when this issue occurs? This issue is critical for us because users who encounter it will no longer be able to proceed with accessory setup, even though their device should support Wi-Fi Aware. Please let us know if you need a sysdiagnose, sample project, full device logs, or additional reproduction information. We would appreciate any guidance on the root cause and possible workaround.

Hello, I'm still investigating, so I could be mistaken. But as far as I can tell, if we create a CBCentralManager, and use it to scan for devices advertising Ranging Service, connect to them, and call the CoreBluetooth startChannelSounding() API, it does not work. I get a 'Operation not permitted' type of error. Instead, if I set up the device at least once using AccessorySetupKit, it does work. Will the need for AccessorySetupKit be removed? The thing is, AccessorySetupKit is not easy to play with. It seems to require no other part of the app to have an existing initialised CBCentralManager for it to do any kind of work, as the Channel Sounding code sample you provided attests to.

Summary We are observing that Wi-Fi Aware data transfer throughput on iPhone is heavily impacted by the device's Wi-Fi association state and by surrounding RF interference. When Wi-Fi is turned off from Control Center, Wi-Fi Aware throughput increases to roughly 2x (or higher) compared to when the device remains associated to a Wi-Fi network. We would like to confirm whether this is expected behavior or a system-level bug. Log Feedback ID: FB23454477 Environment Device: iPhone Feature under test: Wi-Fi Aware (NAN) data path transfer Steps to Reproduce Connect the iPhone to a Wi-Fi network (associate to an AP). Establish a Wi-Fi Aware (NAN) data-path session with a peer device. Start a sustained data transfer and measure the steady-state throughput. Repeat the measurement in two RF conditions: a. Clean RF environment (no other surrounding Wi-Fi/BLE devices nearby). b. Congested / high-interference RF environment. Turn Wi-Fi off from the Control Center pull-down menu (leave the peer/session as before). Repeat the same Wi-Fi Aware transfer and measure throughput again. Observed Behavior Scenario 1 — Wi-Fi connected (associated to an AP) Clean RF environment (Wi-Fi connected, no other surrounding Wi-Fi/BLE devices nearby): Wi-Fi Aware transfer throughput is approximately 20 MB/s. Congested / high-interference RF environment: Wi-Fi Aware transfer throughput drops to approximately 8 MB/s. Reference log: sysdiagnose_2026.06.28_21-05-09+0800_iPhone-OS_iPhone_23F81.tar.gz Scenario 2 — Wi-Fi turned off via Control Center After turning Wi-Fi off from the Control Center pull-down menu, the Wi-Fi Aware transfer throughput increases to 2x or higher compared to Scenario 1. Reference log: sysdiagnose_2026.06.28_21-15-00+0800_iPhone-OS_iPhone_23F81.tar.gz Expected Behavior Wi-Fi Aware throughput should not be significantly constrained by the device's Wi-Fi association state. We expect comparable Wi-Fi Aware performance regardless of whether the device is associated to a Wi-Fi network, since disabling Wi-Fi should not be required to achieve full Wi-Fi Aware data-path throughput. Questions for Apple Is the throughput reduction while associated to a Wi-Fi network expected behavior (e.g., due to time-sharing/channel scheduling between the infrastructure connection and the Wi-Fi Aware data path)? If this is by design, are there recommended APIs, configurations, or best practices to maintain higher Wi-Fi Aware throughput while the device remains connected to Wi-Fi? If this is not expected, we believe this is a system-level bug and would appreciate guidance on a fix or workaround.

Hi! I'm using AccessorySetupKit with CoreBluetooth state restoration. My understanding is that using AccessorySetupKit is a now pre-requisite to enabling the state restoration/preservation apis, so I went that route — and pairing, handoff, and restoration on search discovery or connection completion seem to be working Where I'm stuck: my accessory is poll-based. I read it by writing a request and reading the response. Then I send a new request. the BLE accessory never pushes data on its own. Since restoration only seems to wake my app on an inbound BLE event, if the app gets terminated mid-session while the connection's still healthy, nothing wakes the app and polling just quietly stops. Is there a recommended way to handle this for a request/response device? Thanks!

We noticed that in older OS versions the accessory picker would consistently display a peripheral's advertised friendly name on top of displaying information from the matching display item. While in newer OS versions we would mostly only see the name from the display item. Is there a way to configure this?

Hi there, we deploy upwards of 12-15 accessories (containing BLE) at a time, in a single system instal. Can AccessorySetupKit be used to streamline the pairing process for all of these accessories at once, so that the user isn't required to step through the process for each individual accessory?

Hi there, we deploy upwards of 12-15 hardware accessories containing BLE at a time, in a single system instal. Can AccessorySetupKit be used to streamline the pairing process for all of these accessories at once, so that the user isn't required to step through the process of pairing with each individual accessory?

I forget which extension type it is, but there is one that can discover the devices in a sandbox. Xcode 26 shows me Media Device Discovery, Xcode 27 doesn't. It could be a different one. Which ever one it is, do you know off hand if the new StateReporting framework would report performance and usage privately to MetricKit? I know that some frameworks report data to Apple's analytics reports, I'd potentially want to capture some performance metrics and app state changes that are happening in supporting extensions.

Hello, Currently we have the sample project from WWDC2024 as an example on how to do it as a live example but only as a simulated project on the Accessory end. The example is good but being implemented a rich platform like iOS or iPadOS, the rich stack of APIs are provided. Embedded devices such as the ESP32/RaspberryPI do not have this rich API stack, such as CoreBluetooth and so on, so a mirror stack of API/functions must be implemented to give the equal experience. Are there any examples or design/technical guidelines for the Accessory end to implement AccessorySetupKit on embedded devices. (Like a list of technical requirements or checklist of functions/implementations/services we can go through on a ESP32/RapberryPI) to ensure that the Accessory has all the needed code/technical implementations with AccessorySetupKit for both Bluetooth and WiFi support, especially on the Bluetooth end. Best to have an ESP32 project, implemented in Embedded Swift but at least a checklist (of items/situations/error handling) to confirm that it works.

Like in the case that two products are advertising with the same company identifier, both matching a single display item passed in when displaying the accessory picker. Would it be expected for two items to show in the accessory picker, one for each advertising product?

What would you recommend to teams that want to act as both a central and peripheral role? I want to use the ASK permission model for Central mode, but doing so I can't build connections to Apple Watch and Apple Vision Pro that don't support peripheral mode forcing the iPhone to do that.

Actual Result: After showPicker(for:), the system AccessorySetupUI RemoteAlert brings up a remote keyboard. User taps are dispatched to AccessorySetupUI’s UIRemoteKeyboardWindow instead of the picker content window. App-side endEditing(true) / resignFirstResponder cannot dismiss it because the keyboard belongs to the system AccessorySetupUI remote scene. Key Evidence: 19:51:54.066: App window snapshot before showPicker has no UITextEffectsWindow. 19:51:54.009968: ASAccessorySession ### showPickerWithDisplayItems 19:51:54.013299: AccessorySetupUI showPickerWithOverrideBundleID 19:51:54.051591: AccessorySetupUI reports remote keyboard onscreen, frame {{0, 623}, {440, 333}} 19:51:54.095643: display layout shows com.apple.AccessorySetupUI foreground and com.osmo.tech obscured. 19:51:56.207/19:51:56.305: touch events are sent to and logged as KeyboardTouch touch down/up. Questions for Apple: Is AccessorySetupKit picker expected to show a keyboard when no text input is focused? Is it a system bug that UIRemoteKeyboardWindow covers/intercepts the “Find Accessories” action? Is there any public API for a third-party app to dismiss the keyboard inside AccessorySetupUI RemoteAlert? If this is expected behavior, what is the recommended workaround or required picker/display item configuration?

wifip2pd leaks file descriptors during repeated Wi-Fi Aware NDP cycles → EMFILE → Wi-Fi Aware permanently broken Summary Under repeated Wi-Fi Aware (NAN) datapath connect/teardown cycles, wifip2pd leaks file descriptors until it hits the per-process limit (EMFILE, "Too many open files"). After that, wifip2pd can no longer create the socket needed to configure the nan0 interface, so updating the nan0 IPv6 link-local address fails with Apple80211Error Bad file descriptor. From the app's side, the NDP datapath is established but the NetworkConnection never gets a local IPv6 address and stays stuck in .preparing. The condition does not self-heal and is not cleared by restarting the app — only a reboot (or wifip2pd restart) recovers Wi-Fi Aware. Configuration iPhone 16 Pro Max, iOS 26.5 Network framework (new Swift NetworkConnection / NetworkBrowser Wi-Fi Aware API) System component: wifip2pd Where the problem is The leak and the failure are entirely inside wifip2pd (the per-process descriptor table fills up). The chain is: fd leak in wifip2pd → EMFILE ("Too many open files", errno 24) → socket() fails → cannot set nan0 IPv6 link-local address (Apple80211 ioctl on invalid fd → EBADF) → app NWConnection NWPath = satisfied but localEndpoint = nil → NetworkConnection stuck in .preparing, times out Abnormal console logs (the evidence) The smoking-gun lines from the unified log / Console (process wifip2pd): wifip2pd <Error> Failed to create socket: Too many open files wifip2pd <Error> Failed to update nan0 IPv6 address to [fe80::30c1:22ff:fe97:fefb] (from [fe80::e8a0:9bff:fe25:4d5c]) because <Apple80211Error Bad file descriptor> wifip2pd <Error> nw_path_shared_necp_fd necp_open failed [24: Too many open files] # errno 24 = EMFILE wifip2pd(Network) <Error> File descriptor is bad, could not create socket Counts over one ~11.5-minute failing capture: wifip2pd "Too many open files": 45 occurrences (a healthy capture has 0). nan0 IPv6 address update: 2 success / 13 fail (the 2 successes are before exhaustion; everything after fails with "Bad file descriptor"). Healthy device, for contrast — the IPv6 update succeeds on every NAN MAC rotation, and the app connection then works: wifip2pd Successfully updated nan0 IPv6 address to [fe80::f4c4:14ff:fe28:784a] # → app NWPath: status=satisfied, local=fe80::f4c4:14ff:fe28:784a%nan0 → NetworkConnection .ready Two facts that localize the bug: The leak is in wifip2pd, not the app. wifip2pd is one persistent daemon (constant pid) whose fd count only grows; the client app was restarted multiple times during the test and that did not release the descriptors. All "Too many open files" lines are emitted by wifip2pd. The NDP datapath itself still succeeds — only socket/interface-address configuration fails: kernel nan0: handleDataPathEstablished: NAN-DP Data path ESTABLISHED ... encrypt 1, EstDPs 1 wifip2pd #### Data Confirmed With Peer: ... port: 9004 Application-layer symptom (developer-facing) The same client code works before exhaustion and fails after: Before: NetworkConnection<UDP> reaches .ready; NWPath.localEndpoint = fe80::…%nan0. After: NetworkConnection<UDP> stays .preparing; every onPathUpdate reports status=satisfied, interfaces=["nan0"], local=nil; it times out and retries forever. The decisive developer-visible signal is NWPath.status == .satisfied together with localEndpoint == nil on nan0. Correlating timestamps confirms the contradiction: the console shows Data Confirmed With Peer ... port 9004 ~9–10 s before the app's NetworkConnection gives up, while the matching nan0 IPv6 update fails with "Bad file descriptor". The datapath is up at L2, but the connection is unusable because no local address was ever assigned. Steps to Reproduce Pair an iPhone with a Wi-Fi Aware peer that publishes a datapath service (_media-sync._udp, paired device, NCS-SK-CCM-128). Repeatedly establish and tear down the NDP datapath. In our case the peer device repeatedly powers off/on; each cycle forces a fresh browse + re-pair + NDP establish (the peer's NAN MAC is randomized each boot). Loop this; wifip2pd is never restarted, so the leak accumulates (failure appeared by ~the 9th iteration). Expected vs Actual Expected: wifip2pd releases the descriptors of each completed/torn-down browse/subscribe/datapath session; fd count stays bounded; nan0 IPv6 updates keep succeeding; NetworkConnection reaches .ready. Actual: wifip2pd fd count grows until EMFILE; nan0 IPv6 update then fails permanently; NetworkConnection is stuck .preparing for the rest of the wifip2pd process lifetime. Impact Any app using Wi-Fi Aware NDP datapaths under frequent connect/teardown eventually loses all Wi-Fi Aware connectivity. The failure is sticky for the wifip2pd lifetime and is invisible to / unrecoverable by the client app. Workaround Reboot the device (resets wifip2pd). The client can only slow the leak (fewer reconnects, prompt release of NetworkConnection), not prevent it, since the descriptors leak inside wifip2pd. To confirm / fix A sysdiagnose captured during the reproduction should show wifip2pd's open-fd count growing monotonically per connect/teardown cycle (which descriptor type leaks per browse/subscribe/datapath). Repro signature to grep in the logs: wifip2pd emitting Failed to create socket: Too many open files, necp_open failed [24: Too many open files], and Failed to update nan0 IPv6 address ... Apple80211Error Bad file descriptor.

Hello Apple Developer Forums, We are evaluating AccessorySetupKit for onboarding a custom Wi-Fi smart-home accessory. Our main goal is to achieve password-less Wi-Fi provisioning, meaning the user would not need to manually type a Wi-Fi password or setup/pairing code during onboarding. We would like to understand whether ASK currently supports, or is intended to support: Secure Wi-Fi credential provisioning through system APIs Fully system-mediated onboarding flows Provisioning for headless/no-display accessories More specifically: Can password-less Wi-Fi provisioning be implemented using only public ASK APIs? Is a pairing/setup code always required? Or are developers still expected to use temporary AP mode and custom credential transfer flows? We are trying to determine the recommended onboarding architecture for future products. Thank you.

Hello! I have an accessory, which is paired already with an iPhone, and am attempting to upgrade its SSID permission to Wi-Fi Aware. In ideal conditions, it works perfectly. However, if I dismiss the picker at the time of pin-code entry, I am unable to re-initialize an upgrade authorization picker. Even though the authorization is not completed a WAPairedDeviceID is assigned to the object of 18446744073709551615. Any subsequent attempts to start the picker up again spits out when treated as a failure serves: [ERROR] updateAuthorization error=Error Domain=ASErrorDomain Code=450 "No new updates detected from existing accessory descriptor." Attempting with a mutated descriptor serves: [ERROR] updateAuthorization error=Error Domain=ASErrorDomain Code=450 "Accessory cannot be upgraded with given descriptor." If I try using failAuthorization i get a 550 "Invalid State" error and furthermore if I try finishAuthorization to attempt to clear the descriptor/paired device ID it fails to clear it. If I could be pointed to the intended behavior on how to handle this, or this can be acknowledged as a bug, that would be incredibly appreciated. Thank you!

Environment Xcode 26.5 beta iOS 26.5 beta Using AccessorySetupKit + AccessoryTransportExtension framework Three extensions: AccessoryTransportAppExtension, AccessoryTransportSecurityExtension, AccessoryDataProviderExtension Background Everything worked correctly on iOS 26.4 beta. All three extensions shared the entitlement com.apple.developer.accessory-transport-extension, and the system launched them as expected. After upgrading to iOS 26.5 beta (both Xcode and device), the app compiles and runs, the accessory pairs and connects successfully (state = authorized, BLE connected, notification forwarding = allow), but none of the extensions are launched by the system. Investigation Captured system Console logs from the device and found these errors from deviceaccessd: error deviceaccessd ### Extension 'com.huami.NotificationForwardingDemo.AccessoryDataProviderExtension' is missing entitlement: com.apple.developer.accessory-data-provider for com.apple.accessory-data-provider error deviceaccessd ### Extension 'com.huami.NotificationForwardingDemo.AccessoryTransportSecurityExtension' is missing entitlement: com.apple.developer.accessory-transport-security for com.apple.accessory-transport-security It appears that iOS 26.5 now requires per-extension-type entitlements instead of the shared one. On iOS 26.4, all three extensions used com.apple.developer.accessory-transport-extension and it worked. On iOS 26.5, deviceaccessd now expects com.apple.developer.accessory-transport-security for the security extension and com.apple.developer.accessory-data-provider for the data provider extension. The transport app extension did not report an error, so it may still accept the old entitlement. Attempted Fix Changed the entitlement keys in the .entitlements files to match what deviceaccessd expects. Xcode fails to build with: ▎ Entitlement com.apple.developer.accessory-data-provider not found and could not be included in profile. This likely is not a valid entitlement and should be removed from your entitlements file. Root Cause Checked Apple Developer Portal — only one capability is available: "Accessory Transport Extension", which maps to com.apple.developer.accessory-transport-extension. There are no separate capability options for the new entitlements. The iOS 26.5 beta system requires new per-extension-type entitlements, but the provisioning system does not yet support them. This makes it impossible to build a working AccessoryTransport app on iOS 26.5 beta. Request Please either add the new entitlement capabilities (com.apple.developer.accessory-transport-security, com.apple.developer.accessory-data-provider) to the Apple Developer Portal, or restore backward compatibility with com.apple.developer.accessory-transport-extension in deviceaccessd.

I'm integrating AccessorySetupKit for BLE earbuds discovery and running into an issue with ASDiscoveryDescriptor configuration. Our earbuds don't have a fixed Bluetooth SIG company identifier. So I'm trying to use bluetoothNameSubstring + bluetoothServiceUUID instead. However, this combination never discovers any devices. The picker appears but stays empty. As soon as I add a bluetoothCompanyIdentifier, the device is found instantly. I reproduced this with my Bose QC35 II as well, so it's not specific to our hardware. My configuration: bluetoothServiceUUID: set to our custom UUID bluetoothNameSubstring: set to a substring matching the advertised device name NSAccessorySetupBluetoothServices + NSAccessorySetupBluetoothNames both set in Info.plist supportedOptions: .bluetoothPairingLE iOS 26.3.1, iPhone 11 The documentation doesn't mention that bluetoothCompanyIdentifier is required. Is bluetoothCompanyIdentifier actually required for BLE discovery? If so, is there a recommended approach for devices that don't have a fixed company identifier?