diff -ruN /Applications/Xcode_26.1.0-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSProcessInfo.h /Applications/Xcode_26.1.0-beta2.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSProcessInfo.h --- /Applications/Xcode_26.1.0-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSProcessInfo.h	2025-09-08 04:34:39 +++ /Applications/Xcode_26.1.0-beta2.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSProcessInfo.h	2025-09-29 05:56:43 @@ -245,6 +245,7 @@ @property (readonly, getter=isMacCatalystApp) BOOL macCatalystApp API_AVAILABLE(macos(10.15), ios(13.0), watchos(6.0), tvos(13.0)); @property (readonly, getter=isiOSAppOnMac) BOOL iOSAppOnMac API_AVAILABLE(macos(11.0), ios(14.0), watchos(7.0), tvos(14.0)); +@property (readonly, getter=isiOSAppOnVision) BOOL iOSAppOnVision API_AVAILABLE(macos(26.1), ios(26.1), watchos(26.1), tvos(26.1), visionos(26.1)); @end diff -ruN /Applications/Xcode_26.1.0-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSURLError.h /Applications/Xcode_26.1.0-beta2.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSURLError.h --- /Applications/Xcode_26.1.0-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSURLError.h	2025-09-17 08:01:14 +++ /Applications/Xcode_26.1.0-beta2.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSURLError.h	2025-09-29 06:48:34 @@ -91,6 +91,7 @@ NSURLErrorNetworkUnavailableReasonCellular = 0, NSURLErrorNetworkUnavailableReasonExpensive = 1, NSURLErrorNetworkUnavailableReasonConstrained = 2, + NSURLErrorNetworkUnavailableReasonUltraConstrained API_AVAILABLE(macos(26.1), ios(26.1), watchos(26.1), tvos(26.1), visionos(26.1)) = 3, } API_AVAILABLE(macos(10.15), ios(13.0), watchos(6.0), tvos(13.0)); /*! diff -ruN /Applications/Xcode_26.1.0-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSURLRequest.h /Applications/Xcode_26.1.0-beta2.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSURLRequest.h --- /Applications/Xcode_26.1.0-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSURLRequest.h	2025-09-08 04:30:57 +++ /Applications/Xcode_26.1.0-beta2.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSURLRequest.h	2025-09-29 06:45:29 @@ -335,6 +335,14 @@ @property (readonly) BOOL allowsConstrainedNetworkAccess API_AVAILABLE(macos(10.15), ios(13.0), watchos(6.0), tvos(13.0)); /*! + @abstract returns whether a connection created with this request is allowed to use + network interfaces which have been marked as ultra constrained. + @result YES if the receiver is allowed to use an interface marked as ultra constrained to + satisfy the request, NO otherwise. + */ +@property (readonly) BOOL allowsUltraConstrainedNetworkAccess API_AVAILABLE(macos(26.1), ios(26.1), watchos(26.1), tvos(26.1), visionos(26.1)); + +/*! @abstract returns whether we assume that server supports HTTP/3. Enables QUIC racing without HTTP/3 service discovery. @result YES if server endpoint is known to support HTTP/3. Defaults to NO. @@ -474,6 +482,14 @@ satisfy the request, YES otherwise. */ @property BOOL allowsConstrainedNetworkAccess API_AVAILABLE(macos(10.15), ios(13.0), watchos(6.0), tvos(13.0)); + +/*! + @abstract sets whether a connection created with this request is allowed to use + network interfaces which have been marked as ultra constrained. + @discussion NO if the receiver should not be allowed to use an interface marked as ultra constrained to + satisfy the request, YES otherwise. + */ +@property BOOL allowsUltraConstrainedNetworkAccess API_AVAILABLE(macos(26.1), ios(26.1), watchos(26.1), tvos(26.1), visionos(26.1)); /*! @abstract returns whether we assume that server supports HTTP/3. Enables QUIC diff -ruN /Applications/Xcode_26.1.0-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSURLSession.h /Applications/Xcode_26.1.0-beta2.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSURLSession.h --- /Applications/Xcode_26.1.0-beta.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSURLSession.h	2025-09-08 04:30:57 +++ /Applications/Xcode_26.1.0-beta2.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/System/Library/Frameworks/Foundation.framework/Headers/NSURLSession.h	2025-09-29 06:09:14 @@ -758,6 +758,9 @@ /* allow request to route over networks in constrained mode. Defaults to YES. */ @property BOOL allowsConstrainedNetworkAccess API_AVAILABLE(macos(10.15), ios(13.0), watchos(6.0), tvos(13.0)); +/* allow request to route over ultra constrained networks. */ +@property BOOL allowsUltraConstrainedNetworkAccess API_AVAILABLE(macos(26.1), ios(26.1), watchos(26.1), tvos(26.1), visionos(26.1)); + /* requires requests from the session to be made with DNSSEC validation enabled. Defaults to NO. */ @property BOOL requiresDNSSECValidation API_AVAILABLE(macos(13.0), ios(16.0), watchos(9.0), tvos(16.0));