For important background information, read Extra-ordinary Networking before reading this. Share and Enjoy — Quinn “The Eskimo!” @ Developer Technical Support @ Apple let myEmail = "eskimo" + "1" + "@" + "apple.com" On Host Names I commonly see questions like How do I get the device’s host name? This question doesn’t make sense without more context. Apple systems have a variety of things that you might consider to be the host name: The user-assigned device name — This is a user-visible value, for example, Guy Smiley. People set this in Settings > General > About > Name. The local host name — This is a DNS name used by Bonjour, for example, guy-smiley.local. By default this is algorithmically derived from the user-assigned device name. On macOS, people can override this in Settings > General > Sharing > Local hostname. The reverse DNS name associated with the various IP addresses assigned to the device’s various network interfaces That last one is pretty much useless. You can’t get a single host name because there isn’t a single IP address. For more on that, see Don’t Try to Get the Device’s IP Address. The other two have well-defined answers, although those answers vary by platform. I’ll talk more about that below. Before getting to that, however, let’s look at the big picture. Big Picture The use cases for the user-assigned device name are pretty clear. I rarely see folks confused about that. Another use case for this stuff is that you’ve started a server and you want to tell the user how to connect to it. I discuss this in detail in Showing Connection Information in an iOS Server. However, most folks who run into problems like this do so because they’re suffering from one of the following misconceptions: The device has a DNS name. Its DNS name is unique. Its DNS name doesn’t change. Its DNS name is in some way useful for networking. Some of these may be true in some specific circumstances, but none of them are true in all circumstances. These issues are not unique to Apple platforms — if you look at the Posix spec for gethostname, it says nothing about DNS! — but folks tend to notice these problems more on Apple platforms because Apple devices are often deployed to highly dynamic network environments. So, before you start using the APIs discussed in this post, think carefully about your assumptions. And if you actually do want to work with DNS, there are two cases to consider: If you’re looking for the local host name, use the APIs discussed above. In other cases, it’s likely that the APIs in this post will not be helpful and you’d be better off focusing on DNS APIs [1]. [1] The API I recommend for this is DNS-SD. See the DNS section in TN3151 Choosing the right networking API. macOS To get the user-assigned device name, call the SCDynamicStoreCopyComputerName(_:_:) function. For example: let userAssignedDeviceName = SCDynamicStoreCopyComputerName(nil, nil) as String? To get the local host name, call the SCDynamicStoreCopyLocalHostName(_:) function. For example: let localHostName = SCDynamicStoreCopyLocalHostName(nil) as String? IMPORTANT This returns just the name label. To form a local host name, append .local.. Both routines return an optional result; code defensively! If you’re displaying these values to the user, use the System Configuration framework dynamic store notification mechanism to keep your UI up to date. iOS and Friends On iOS, iPadOS, tvOS, and visionOS, get the user-assigned device name from the name property on UIDevice. IMPORTANT Access to this is now restricted. For more on that, see the documentation for the com.apple.developer.device-information.user-assigned-device-name entitlement. There is no direct mechanism to get the local host name. Other APIs There are a wide variety of other APIs that purport to return the host name. These include: gethostname The name property on NSHost [1] The hostName property on NSProcessInfo (ProcessInfo in Swift) These are problematic for a number of reasons: They have a complex implementation that makes it hard to predict what value you’ll get back. They might end up trying to infer the host name from the network environment. The existing behaviour is hard to change due to compatibility concerns. Some of them are marked as to-be-deprecated. IMPORTANT The second issue is particularly problematic, because it involves synchronous DNS requests [2]. That’s slow in general. Worse yet, if the network environment is restricted in some way, these calls can be very slow, taking about 30 seconds to time out. Given these problems, it’s generally best to avoid calling these routines at all. [1] It also has a names property, which is a little closer to reality but still not particularly useful. [2] Actually, that’s not true for gethostname. Rather, that call just returns whatever was last set by sethostname. This is always fast. The System Configuration framework infrastructure calls sethostname to update the host name as the system state changes.

I'm working on adding a single Non-Consumable In-App purchase to my app. Essentially a "try before you buy" type thing. Limited functionality unless the app is purchased. I am currently testing this using Xcode and the Manage StoreKit Transactions window. So far most everything appears to be working except for declined pending transactions. If I set Ask to Buy to Enabled, the Ask Permission (for parent or guardian) dialog appears. After pressing the Ask button, I see a transaction listed as Pending Approval. If I Approve the transaction, then my app is notified and all is well. However, if I Decline the transaction then my app is not notified. Is that normal? Also, how do I (i.e. the app) know that there is a pending transaction?

My client is using iCloud Mail with his custom domain and he communicated with many govt organizations which seem to all be using Barracuda Email Protection for their spam prevention. I have properly configured his SPF, DKIM & DMARC DNS records however his emails were still being rejected. (Email header below) I contacted Barracuda support with the email header and they replied saying that the emails were rejected becuase Apple Mail has missing PTR records. I have sent dozens of emails for testing and looking at all their headers I can see (ms-asmtp-me-k8s.p00.prod.me.com [17.57.154.37]) which does not have a PTR record. ----FULL EMAIL HEADER WITH 3RD PARTY DOMAINS REMOVED----- <recipient_email_address>: host d329469a.ess.barracudanetworks.com[209.222.82.255] said: 550 permanent failure for one or more recipients (recipient_email_address:blocked) (in reply to end of DATA command) Reporting-MTA: dns; p00-icloudmta-asmtp-us-west-3a-100-percent-10.p00-icloudmta-asmtp-vip.icloud-mail-production.svc.kube.us-west-3a.k8s.cloud.apple.com X-Postfix-Queue-ID: 8979C18013F8 X-Postfix-Sender: rfc822; sender_email_address Arrival-Date: Thu, 20 Mar 2025 12:30:05 +0000 (UTC) Final-Recipient: rfc822; @****** Original-Recipient: rfc822;recipient_email_address Action: failed Status: 5.0.0 Remote-MTA: dns; d329469a.ess.barracudanetworks.com Diagnostic-Code: smtp; 550 permanent failure for one or more recipients (recipient_email_address:blocked) Return-Path: <sender_email_address> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sender_domain; s=sig1; bh=CyUt/U7mIHwXB5OQctPjRH/OxLH7GsLR54JjGuRkj9Y=; h=From:Message-Id:Content-Type:Mime-Version:Subject:Date:To:x-icloud-hme; b=hwEbggsctiCRlMlEgovBTjB/0sPRCb2k+1wzHRZ2dZNrZdOqvFSNWU+Aki9Bl8nfv eEOoXz5qWxO2b2rEBl08lmRQ3hCyroayIn4keBRrgkxL1uu4zMTaDUHyau2vVnzC3h ZmwQtQxiu7QvTS/Sp8jjJ/niOPSzlfhphqMxnQAZi/jmJGcZPadT8K+7+PhRllVnI+ TElJarN1ORQu+CaPGhEs9/F7AIcjJNemnVg1cude7EUuO9va8ou49oFExWTLt7YSMl s+88hxxGu3GugD3eBnitzVo7s7/O9qkIbDUjk3w04/p/VOJ+35Mvi+v/zB9brpYwC1 B4dZP+AhwJDYA== Received: from smtpclient.apple (ms-asmtp-me-k8s.p00.prod.me.com [17.57.154.37]) by p00-icloudmta-asmtp-us-west-3a-100-percent-10.p00-icloudmta-asmtp-vip.icloud-mail-production.svc.kube.us-west-3a.k8s.cloud.apple.com (Postfix) with ESMTPSA id 8979C18013F8; Thu, 20 Mar 2025 12:30:05 +0000 (UTC) From: Marcel Brunel <sender_email_address> Message-Id: <2E8D69EA-FCA6-4F5D-9D42-22A955C073F6@sender_domain> Content-Type: multipart/alternative; boundary="Apple-Mail=_F9AC7D29-8520-4B25-9362-950CB20ADEC5" Mime-Version: 1.0 (Mac OS X Mail 16.0 (3826.400.131.1.6)) Subject: Re: [EXTERNAL] - Re: Brunel - 2024 taxes Date: Thu, 20 Mar 2025 07:29:27 -0500 In-Reply-To: <SA0PR18MB350300DE7274C018F66EEA24F2D82@SA0PR18MB3503_namprd18_prod_outlook_com> To: Troy Womack <recipient_email_address> References: <SA0PR18MB350314D0B88E283C5C8E1BB6F2DE2@SA0PR18MB3503_namprd18_prod_outlook_com> <9B337A3E-D373-48C5-816F-C1884BDA6F42@sender_domain> <SA0PR18MB350341A7172E8632D018A910F2D82@SA0PR18MB3503_namprd18_prod_outlook_com> <SA0PR18MB350300DE7274C018F66EEA24F2D82@SA0PR18MB3503_namprd18_prod_outlook_com> X-Mailer: Apple Mail (2.3826.400.131.1.6) X-Proofpoint-ORIG-GUID: uqebp2OIbPqBr3dYsAxdFVkCNbM5Cxyl X-Proofpoint-GUID: uqebp2OIbPqBr3dYsAxdFVkCNbM5Cxyl X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1093,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-03-20_03,2025-03-19_01,2024-11-22_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 bulkscore=0 clxscore=1030 suspectscore=0 mlxlogscore=999 mlxscore=0 phishscore=0 malwarescore=0 spamscore=0 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.19.0-2411120000 definitions=main-2503200077

a few times, for reasons unknown to me, asr restore processes broke with error 49244. Basically, the process get interrupted, most cases when is about to finish, with just a laconic message saying "Volume replication failed - error 49244". Where can I get information on this error, what exactly means, what causes it and more important, how to troubleshoot it. Any help will be appreciated, Thanks!!

A team observed lots of timeouts from the Apple Pay session endpoint: https://apple-pay-gateway-cert.apple.com/paymentservices/paymentSession Is it expected or some kind of an implementation issue from the caller side? Thanks!

We use the Transaction Info API for Apple Pay verification, but due to a surge in player payment requests during major game version updates, we've encountered a large backlog of orders and are unable to process all verifications in time. We're wondering if anyone knows the process for requesting an increase in the QPS limit? QAQ

iOS 16 and earlier On iOS 16 and earlier, Apple Pay on the Web required Safari—and all interactions with the Apple Pay API to come from the parent/top level page. In order to facilitate the Apple Pay button in an HTML inline frame (iframe), there will need to be cross frame communication between the child and parent pages. Cross frame communication should be secure and robust, therefore the use of postMessage for this purpose is recommended. The expectation is for all communication with Apple Pay to occur from the parent page, so the iframe must relay all Apple Pay related events to the parent to handle. Some examples: Apple Pay availability: The parent calls applePayCapabilities, then sends the message of the response to the iframe, which then uses the value to toggle the visibility of the Apple Pay button. Apple Pay session: The iframe receives an onclick() event when the Apple Pay button is clicked and sends the message to the parent (providing details about the transaction). The parent create the payment request to obtain the session validation URL, and eventually receive session credentials and invokes completeMerchantValidation() to prevent the payment sheet. After the payment is authorized by the Payment Service Provider (PSP), the parent either: Redirects the parent page to a payment success page; or Sends a message to the iframe to complete the transaction flow itself. iOS 17 and later On IOS 17 and later, the iframe HTML element should include the allow="payment" attribute, which should facilitate the cross frame communications instead of needing a dedicated JavaScript library. This means all of the Apple Pay code/calls can reside in the iframe page—which is typically a hosted page from a Payment Service Provider (PSP), all the parent page—typically a merchant—has to do is add the attribute mentioned above to the iframe element. Important: Regardless of the iOS version, the PSP/merchant always needs to make sure the parent page domain is the one registered in the Developer portal, and used in the request to generate a merchant session via ApplePaySession. Cheers, Paris X Pinkney |  WWDR | DTS Engineer

Issue: We noticed inconsistent BLE device discovery times (ranging from 0.5s to 1.5s) despite the peripheral advertising at 2Hz (500ms interval). Questions: Does iOS regulate the BLE scan interval or duty cycle internally? If yes, what factors affect this behavior (e.g., foreground/background state, connected devices)? Are there recommended practices to reduce discovery latency for peripherals with fixed advertising intervals? Is there a way to configure scan parameters (e.g., scan window/interval) programmatically, similar to Android's BluetoothLeScanner? Test Context: Device: iPhone 13 mini (iOS 17.6.1) Code: CBCentralManager.scanForPeripherals(withServices: nil, options: [CBCentralManagerScanOptionAllowDuplicatesKey: true])

We're experiencing an issue with in-app purchases in our React Native iOS app where RNIap.getProducts() is consistently returning an empty array, preventing users from making purchases. Technical Details: Using react-native-iap library Product ID: '[REDACTED]' Platform: iOS Product Type: Consumable (one-time payment, NOT subscription) Error in logs: "No products returned from App Store. Check App Store Connect." Debugging shows: Products Fetched: [] Steps to Reproduce: Open app and navigate to the quiz feature Attempt to purchase additional quiz attempts Modal opens but fails to load product information What We've Confirmed: IAP Connection initializes successfully No error is thrown during product fetch, just an empty array returned App is configured with correct Bundle ID Using Apple Sandbox test account We are implementing consumable purchases (one-time payments) Potential Issues to Investigate: Product configuration in App Store Connect Ensure product is set as "Consumable" type in App Store Connect Sandbox tester account permissions/activation Bundle ID matching between app and App Store Connect Product ID case sensitivity or typos

It seems like find my mac is able to fetch the device location even if the device is in locked state. Why can’t other apps do the same.

Hi Here is my problem. I have a large number of portrait pictures in my adobe lightroom catalogue which I need to email to the subjects of the portraits. These peoples names and email addresses are stored in my pictures metadata and I am able to export the pictures with accompanying text or CSV files containing the names &amp; addresses. What I want to do is export the pictures in bulk and automagically create and send individual emails for each picture, preferably with the persons name in the salutation at the start of the email. I have done some googling trying to find a solution to this. I think that I need to use automator. (The lightroom option of mailing directly from within the programme isn't going to do the job, each mail would need to be addressed and written by hand each time). I have been playing around with it, but can see no way to populate the email address field or add the attachment. Can anyone help me out, with even just the basic outline, of how this would be achieved please?

What is the version policy for the Apple Pay SDK Javascript ? The documentation refers to this link : https://applepay.cdn-apple.com/jsapi/1.latest/apple-pay-sdk.js The future updates will overrride the file on that link ? Is there a way to be notified of any changes ? We are using a previous version named v1 : https://applepay.cdn-apple.com/jsapi/v1/apple-pay-sdk.js What are the risks not using changing to the lastesdt link ? Thank you for your help.

In the main app, is there a way to distinguish whether the application:didFinishLaunchingWithOptions: method is triggered by the user manually clicking the app icon, or whether it is automatically triggered by the system after Live Activities receives a remote message notification?

Widgets on the widget is not responding to the touch properly. This issue is also affecting within the home screen widget in a way that the widget switches to light mode by itself even though I am in dark mode. Additionally, lock screen does not to respond once the lock screen widget has been edited. Is anyone else having this issue?

Hi all, we are a Software company located in the EU. Or focus is building solutions for closed-loop fuel cards. To allow our customers to move to "virtual" closed-loop cards, we would like to request a HCE Entitlement. When filling the HCE entitlement form non of the provided Use Cases seemed to cover our case. In addition I'm unsure if AID Prefixes are mandatory for the closed-loop use case our App is meant for. I would like to avoid starting an HCE entitlement process with incorrect parameters and delay the overall process due to this. Thanks for any insights / feedback in advance.

Body: Hello, We are currently implementing iOS order verification and have encountered an issue. Some of the receipts we verify return with an empty in_app array, which makes it impossible to determine whether there is a valid in-app purchase. Below is the code we’re using for verification and the result we receive: Code Example: public function iosVerifyReceipt($receipt, $password = '', $sandbox = false) { $url = $sandbox ? 'https://sandbox.itunes.apple.com/verifyReceipt' : 'https://buy.itunes.apple.com/verifyReceipt'; if (empty($password)) { $data = json_encode(['receipt-data' => $receipt]); } else { $data = json_encode(['receipt-data' => $receipt, 'password' => $password]); } $ch = curl_init($url); curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); curl_setopt($ch, CURLOPT_POST, true); curl_setopt($ch, CURLOPT_POSTFIELDS, $data); $result = curl_exec($ch); curl_close($ch); $result = json_decode($result, true); $result = $result ?? []; $result['sandbox'] = $sandbox; if ($result['status'] != 0) { Log::warning('ios verify receipt failed', ['receipt' => $receipt, 'result' => $result, 'sandbox' => $sandbox]); if ($result['status'] == 21007) { return $this->iosVerifyReceipt($receipt, $password, true); } } return $result; } // Order validation check if (empty($result) || $result['status'] != 0) { throw new BadRequestHttpException("Ios Order Verify Error"); } $appItemId = $result['receipt']['app_item_id'] ?? ""; if ($appItemId != MY_APP_ID) { throw new BadRequestHttpException("Ios Order Verify Error"); } $inApp = array_filter($result['receipt']['in_app'] ?? [], function ($item) use ($transactionId, $order) { return $item['transaction_id'] == $transactionId && $item['product_id'] == $order->getProductId(); }); if (empty($inApp)) { throw new BadRequestHttpException("Ios Order Verify Error"); } Array ( [receipt] => Array ( [receipt_type] => Production [adam_id] => * [app_item_id] => * [bundle_id] => * [application_version] => * [download_id] => * [version_external_identifier] => * [receipt_creation_date] => 2025-02-11 04:06:47 Etc/GMT [receipt_creation_date_ms] => * [receipt_creation_date_pst] => 2025-02-10 20:06:47 America/Los_Angeles [request_date] => 2025-02-11 15:54:56 Etc/GMT [request_date_ms] => * [request_date_pst] => 2025-02-11 07:54:56 America/Los_Angeles [original_purchase_date] => 2025-02-11 04:02:41 Etc/GMT [original_purchase_date_ms] => * [original_purchase_date_pst] => 2025-02-10 20:02:41 America/Los_Angeles [original_application_version] => 5511 [preorder_date] => 2025-01-17 21:12:28 Etc/GMT [preorder_date_ms] => * [preorder_date_pst] => 2025-01-17 13:12:28 America/Los_Angeles [in_app] => Array ( ) ) [environment] => Production [status] => 0 [sandbox] => ) Problem Description: • We are noticing that in some orders, the in_app array is returned as empty. This causes difficulty in verifying the presence of in-app purchases. • Our validation logic assumes that if in_app is empty, the order is invalid, but we would like clarification on whether this is correct or if such a scenario is normal under certain conditions. Actions Taken: • We have reviewed Apple’s documentation and other related resources, but no clear explanation is given about when in_app might be empty. • Can we safely rely on an empty in_app array to consider the order invalid, or should we investigate further for potential issues like delays or errors during the verification process? We would appreciate your guidance on how to handle such cases. Thank you for your support!

Hey there my application allows users to have video calls with each other using Agora. I have successfully set up incoming call functionality on Android but on iOS I am struggling to get the call ui to appear when the app is not running/in background/locked. To my knowledge this is because there is much stricter security on iOS which is limiting me from calling this. When i initially set it up it worked at first when the app was in the background but I think I was failing to report the call to call kit in time and now it's not working. I'm not sure if I need access to this entitlement: com.apple.developer.pushkit.unrestricted-voip Which i believe is only for the big boys or if I make sure I'm reporting the call to call kit fast enough that I won't encounter this issue and it will consistently work in the background.

I've been trying to make my app available on the App Store for a month now, but I can't because the signatures I created don't appear in the sandbox app. I did all the configuration in the store and in the app. I tested the same code in another app with signatures and it was loaded, but the signature for that specific app doesn't appear. I've tried contacting Apple support, but they can't help me. It almost seems like it's on purpose. I'm treated like crap and they don't even give me an explanation about what's happening. Can anyone help me?

Apple Feedback Ticket: FB16804936 Background We develop a parental control application called Adora Kids (https://apps.apple.com/us/app/adora-kids/id6443787669) that requires "Location Always" permission to function properly. Our app has Screen Time authorization and provides monitoring services for parents. Issue We are experiencing a recurring problem where child users receive the system notification "Adora accessed your location in the background" every few days. This frequently results in children disabling location permissions, which prevents our app from functioning as intended. Current Approach and Limitations We have explored using Content & Privacy Restrictions for Location Services as a potential solution, but have encountered two significant limitations: These restrictions cannot be accessed programmatically via the ManagedSettings framework (unlike AppStoreSettings and other restrictions). The current implementation is "all-or-nothing" - enabling location restrictions blocks permission changes for ALL apps on the device, preventing children from granting legitimate location access to other applications. Questions Is there a way to programmatically access and manage Content & Privacy Restrictions for Location Services through the ManagedSettings framework that we might have overlooked? Are there any recommended approaches for apps with Screen Time authorization to prevent users from changing specific permissions (particularly location) while still allowing them to manage permissions for other apps? Does Apple have plans to implement app-specific permission locking for apps with Screen Time authorization in future iOS releases? Are there any alternative approaches or workarounds that other developers have successfully implemented for this use case? Any guidance from the developer community or Apple engineers would be greatly appreciated. This is a critical functionality issue affecting the reliability of our parental control service. Thank you in advance for your assistance.

I would like to test running some Thread Networking code on my MacOS machine: import ThreadNetwork let client = THClient() let bIsPreferredAvailable = await client.isPreferredAvailable() but I get some errors when trying to create an instance of the THClient class: Client: -[THClient connectToXPCService]_block_invoke - CTCS XPC Client is interrupted. Client: -[THClient getConnectionEntitlementValidity]_block_invoke - clientProxyWithErrorHandler Error: Error Domain=NSCocoaErrorDomain Code=4097 "connection to service named com.apple.ThreadNetwork.xpc" UserInfo={NSDebugDescription=connection to service named com.apple.ThreadNetwork.xpc} Client: -[THClient init] - XPC Client Init Failed Invalidating XPC connection. Client: -[THClient getConnectionEntitlementValidity]_block_invoke - clientProxyWithErrorHandler Error: Error Domain=NSCocoaErrorDomain Code=4097 "connection to service named com.apple.ThreadNetwork.xpc" UserInfo={NSDebugDescription=connection to service named com.apple.ThreadNetwork.xpc} How can I get the code to run?