Support Xcode 27

.github/workflows/ios-sdk-ci.yml

@@ -10,7 +10,7 @@ on:
 jobs:
   sdk-tests:
     name: "SDK Tests"
-    runs-on: macos-15
+    runs-on: xcode-27
     steps:
       - name: Checkout Code
         uses: actions/checkout@v5
@@ -30,7 +30,7 @@ jobs:
 
   build-demo-swift:
     name: "Build Demo Swift"
-    runs-on: macos-15
+    runs-on: xcode-27
     needs: [sdk-tests]
     steps:
       - name: Checkout Code
@@ -58,13 +58,13 @@ jobs:
 
   build-demo-objc:
     name: "Build Demo Objective-C"
-    runs-on: macos-15
+    runs-on: xcode-27
     env:
       FL_OUTPUT_DIR: output
     needs: [sdk-tests]
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v5
       - name: Bundle install
         uses: ruby/setup-ruby@v1
         with:
@@ -92,7 +92,7 @@ jobs:
     steps:
       - name: Successful Release Post to Slack
         uses: slackapi/slack-github-action@v2.1.1
-        if: ${{ github.event_name == 'push' && startsWith(github.ref, 'refs/tags/') && needs.build-demo-swift.result == 'success' && needs.build-demo-swift.result == 'success' }}
+        if: ${{ github.event_name == 'push' && startsWith(github.ref, 'refs/tags/') && needs.build-demo-swift.result == 'success' && needs.build-demo-objc.result == 'success' }}
         with:
           method: chat.postMessage
           token: "${{ secrets.SLACK_MESSENGER_APP_TOKEN }}"
@@ -117,7 +117,7 @@ jobs:
                     text: ":white_check_mark: *iOS SDK release:*\n${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}"
       - name: Build failure Post to Slack
         uses: slackapi/slack-github-action@v2.1.1
-        if: ${{ github.event_name == 'pull_request' && (needs.build-demo-swift.result != 'success' || needs.build-demo-swift.result != 'success')}}
+        if: ${{ github.event_name == 'pull_request' && (needs.build-demo-swift.result != 'success' || needs.build-demo-objc.result != 'success')}}
         with:
           method: chat.postMessage
           token: "${{ secrets.SLACK_MESSENGER_APP_TOKEN }}"

OptableSDK.podspec

@@ -14,7 +14,7 @@ Pod::Spec.new do |spec|
   spec.author        = { "Optable Technologies Inc" => "support@optable.co" }
 
   spec.platform              = :ios
-  spec.ios.deployment_target = "12.0"
+  spec.ios.deployment_target = "15.0"
   spec.swift_version         = "5.0"
 
   spec.source        = { :git => "https://github.com/Optable/optable-ios-sdk.git", :tag => "#{spec.version}" }

OptableSDK.xcodeproj/project.pbxproj

@@ -286,7 +286,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 15.0;
 				MTL_ENABLE_DEBUG_INFO = INCLUDE_SOURCE;
 				MTL_FAST_MATH = YES;
 				ONLY_ACTIVE_ARCH = YES;
@@ -347,7 +347,7 @@
 				GCC_WARN_UNINITIALIZED_AUTOS = YES_AGGRESSIVE;
 				GCC_WARN_UNUSED_FUNCTION = YES;
 				GCC_WARN_UNUSED_VARIABLE = YES;
-				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 15.0;
 				MTL_ENABLE_DEBUG_INFO = NO;
 				MTL_FAST_MATH = YES;
 				SDKROOT = iphoneos;
@@ -374,7 +374,7 @@
 				ENABLE_MODULE_VERIFIER = YES;
 				INFOPLIST_FILE = Source/Info.plist;
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
-				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 15.0;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
@@ -407,7 +407,7 @@
 				ENABLE_MODULE_VERIFIER = YES;
 				INFOPLIST_FILE = Source/Info.plist;
 				INSTALL_PATH = "$(LOCAL_LIBRARY_DIR)/Frameworks";
-				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 15.0;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
@@ -431,7 +431,7 @@
 				CODE_SIGN_STYLE = Automatic;
 				DEVELOPMENT_TEAM = "";
 				INFOPLIST_FILE = Tests/Info.plist;
-				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 15.0;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",
@@ -452,7 +452,7 @@
 				CODE_SIGN_STYLE = Automatic;
 				DEVELOPMENT_TEAM = "";
 				INFOPLIST_FILE = Tests/Info.plist;
-				IPHONEOS_DEPLOYMENT_TARGET = 12.0;
+				IPHONEOS_DEPLOYMENT_TARGET = 15.0;
 				LD_RUNPATH_SEARCH_PATHS = (
 					"$(inherited)",
 					"@executable_path/Frameworks",

Package.swift

@@ -1,11 +1,11 @@
-// swift-tools-version:5.3
+// swift-tools-version:5.5
 // The swift-tools-version declares the minimum version of Swift required to build this package.
 
 import PackageDescription
 
 let package = Package(
     name: "OptableSDK",
-    platforms: [.iOS(.v12)],
+    platforms: [.iOS(.v15)],
     products: [
         // Products define the executables and libraries a package produces, and make them visible to other packages.
         .library(

Source/Core/EdgeAPI.swift

@@ -118,25 +118,8 @@ extension EdgeAPI {
                 completionHandler(data, response, error)
                 return
             }
-            if #available(iOS 13.0, *) {
-                if let passport = res.value(forHTTPHeaderField: self.kPassportHeader) {
-                    self.storage.setPassport(passport)
-                }
-            } else {
-                // In older versions of iOS, we have to resort searching through headers via res.allHeaderFields
-                // Unlike res.value(forHTTPHeaderField:...) which was introduced in iOS 13.0, allHeaderFields is
-                // case-sensitive, so we need to take special care to perform a case-INsensitive search:
-                for (key, value) in res.allHeaderFields {
-                    if let header = key as? String {
-                        let result: ComparisonResult = header.compare(self.kPassportHeader, options: NSString.CompareOptions.caseInsensitive)
-                        if result == .orderedSame {
-                            if let pp = value as? String {
-                                self.storage.setPassport(pp)
-                                break
-                            }
-                        }
-                    }
-                }
+            if let passport = res.value(forHTTPHeaderField: self.kPassportHeader) {
+                self.storage.setPassport(passport)
             }
             completionHandler(data, response, error)
         }
@@ -148,7 +131,9 @@ extension EdgeAPI {
     private func resolveUserAgent(callback: @escaping (_ useragent: String) -> Void) {
         var wkUserAgent = ""
         let myGroup = DispatchGroup()
-        let window = UIApplication.shared.keyWindow
+        let window = UIApplication.shared.connectedScenes
+            .compactMap { ($0 as? UIWindowScene)?.keyWindow }
+            .first
         let webView = WKWebView(frame: UIScreen.main.bounds)
 
         webView.isHidden = true

Source/Core/OptableIdentifierEncoder.swift

@@ -5,11 +5,8 @@
 //  Copyright © 2026 Optable Technologies, Inc. All rights reserved.
 //
 
-import CommonCrypto
+import CryptoKit
 import Foundation
-#if canImport(CryptoKit)
-    import CryptoKit
-#endif
 
 // MARK: - OptableIdentifierEncoder
 enum OptableIdentifierEncoder {
@@ -196,25 +193,9 @@ enum OptableIdentifierEncoder {
     }
 
     private static func sha256(data: Data) -> String {
-        #if canImport(CryptoKit)
-            if #available(iOS 13.0, *) {
-                return SHA256
-                    .hash(data: data)
-                    .compactMap({ String(format: "%02x", $0) })
-                    .joined()
-            }
-        #endif
-
-        return cchash(data)
-    }
-
-    private static func cchash(_ input: Data) -> String {
-        var digest = [UInt8](repeating: 0, count: Int(CC_SHA256_DIGEST_LENGTH))
-        input.withUnsafeBytes { bytes in
-            _ = CC_SHA256(bytes.baseAddress, CC_LONG(input.count), &digest)
-        }
-        return digest.makeIterator().compactMap {
-            String(format: "%02x", $0)
-        }.joined()
+        SHA256
+            .hash(data: data)
+            .compactMap({ String(format: "%02x", $0) })
+            .joined()
     }
 }

Source/Misc/AppTrackingTransparency.swift

@@ -8,11 +8,7 @@
 #if canImport(AdSupport)
 
     import AdSupport
-
-    #if canImport(AppTrackingTransparency)
-        import AppTrackingTransparency
-    #endif
-
+    import AppTrackingTransparency
     import Foundation
 
     enum ATT {
@@ -29,21 +25,6 @@
             }
         #endif
 
-        // MARK: isAdvertisingTrackingEnabled
-
-        #if DEBUG
-            @available(iOS, introduced: 6, deprecated: 14,
-                       message: "Replaced by ATTrackingManager in AppTrackingTransparency.")
-            static var isAdvertisingTrackingEnabled_DebugOverride: Bool?
-            static var isAdvertisingTrackingEnabled: Bool {
-                isAdvertisingTrackingEnabled_DebugOverride ?? ASIdentifierManager.shared().isAdvertisingTrackingEnabled
-            }
-        #else
-            static var isAdvertisingTrackingEnabled: Bool {
-                ASIdentifierManager.shared().isAdvertisingTrackingEnabled
-            }
-        #endif
-
         // MARK: advertisingIdentifierAvailable
 
         #if DEBUG
@@ -57,110 +38,22 @@
                 }
             #endif
 
-            #if canImport(AppTrackingTransparency)
-                if #available(iOS 14, *) {
-                    return trackingStatus == .authorized
-                } else {
-                    return isAdvertisingTrackingEnabled
-                }
-            #else
-                return isAdvertisingTrackingEnabled
-            #endif
+            return trackingStatus == .authorized
         }
 
-        // MARK: attAvailable
+        // MARK: trackingStatus
 
         #if DEBUG
-            static var attAvailable_DebugOverride: Bool?
+            static var trackingStatus_DebugOverride: ATTrackingManager.AuthorizationStatus?
         #endif
 
-        static var attAvailable: Bool {
+        static var trackingStatus: ATTrackingManager.AuthorizationStatus {
             #if DEBUG
-                if let override = attAvailable_DebugOverride {
-                    return override
-                }
+                return trackingStatus_DebugOverride ?? ATTrackingManager.trackingAuthorizationStatus
+            #else
+                return ATTrackingManager.trackingAuthorizationStatus
             #endif
-
-            if #available(iOS 14, *) {
-                return true
-            } else {
-                return false
-            }
         }
-
-        #if canImport(AppTrackingTransparency)
-
-            // MARK: canAuthorize
-
-            #if DEBUG
-                @available(iOS 14, *)
-                static var canAuthorize_DebugOverride: Bool?
-            #endif
-
-            static var canAuthorize: Bool {
-                if #available(iOS 14, *) {
-                    #if DEBUG
-                        if let override = canAuthorize_DebugOverride {
-                            return override
-                        }
-                    #endif
-
-                    return ATTrackingManager.trackingAuthorizationStatus == .notDetermined
-                } else {
-                    return false
-                }
-            }
-
-            // MARK: trackingStatus
-
-            #if DEBUG
-                @available(iOS 14, *)
-                static var trackingStatus_DebugOverride: ATTrackingManager.AuthorizationStatus?
-            #endif
-
-            @available(iOS 14, *)
-            static var trackingStatus: ATTrackingManager.AuthorizationStatus {
-                #if DEBUG
-                    return trackingStatus_DebugOverride ?? ATTrackingManager.trackingAuthorizationStatus
-                #else
-                    return ATTrackingManager.trackingAuthorizationStatus
-                #endif
-            }
-
-            // MARK: RequestAuthorization
-
-            @available(iOS 14, *)
-            static func requestATTAuthorization(completion: ((Bool) -> Void)? = nil) {
-                #if DEBUG
-                    if let override = trackingStatus_DebugOverride {
-                        completion?(override == .authorized)
-                        return
-                    }
-                #endif
-
-                ATTrackingManager.requestTrackingAuthorization { status in
-                    switch status {
-                    case .authorized:
-                        completion?(true)
-                    case .denied, .notDetermined, .restricted:
-                        completion?(false)
-                    @unknown default:
-                        completion?(true)
-                    }
-                }
-            }
-
-            @available(iOS 14, *)
-            @discardableResult
-            static func requestATTAuthorization() async -> Bool {
-                await withCheckedContinuation { continuation in
-                    requestATTAuthorization { isAuthorized in
-                        continuation.resume(returning: isAuthorized)
-                    }
-                }
-            }
-
-        #endif
     }
 
 #endif