swift-server · guoye-zhang · May 20, 2026
diff --git a/Package.swift b/Package.swift
@@ -49,7 +49,7 @@ let package = Package(
     dependencies: [
         .package(
             url: "https://github.com/apple/swift-http-api-proposal.git",
-            revision: "140b8c2aa773514e2464c15db8d94f4eca46d4a1"
+            revision: "d58fd6fa157e08bff44aa360ff83ebd424783392"
         ),
         .package(
             url: "https://github.com/apple/swift-async-algorithms.git",

diff --git a/Sources/Example/Example.swift b/Sources/Example/Example.swift
@@ -22,7 +22,7 @@ import NIOHTTPServer
 import X509
 
 @main
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 struct Example {
     static func main() async throws {
         try await serve()

diff --git a/Sources/NIOHTTPServer/Configuration/NIOHTTPServer+SwiftConfiguration.swift b/Sources/NIOHTTPServer/Configuration/NIOHTTPServer+SwiftConfiguration.swift
@@ -20,7 +20,7 @@ import NIOHTTP2
 import SwiftASN1
 public import X509
 
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 extension NIOHTTPServerConfiguration {
     /// Initialize the server configuration from a config reader.
     ///
@@ -110,7 +110,7 @@ extension NIOHTTPServerConfiguration {
     }
 }
 
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 extension NIOHTTPServerConfiguration.BindTarget {
     /// Initialize a bind target configuration from a config reader.
     ///
@@ -134,7 +134,7 @@ private enum HTTPVersionKind: String {
     case http2
 }
 
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 extension Set where Element == NIOHTTPServerConfiguration.HTTPVersion {
     /// Initialize a supported HTTP versions configuration from a config reader.
     ///
@@ -171,7 +171,7 @@ extension Set where Element == NIOHTTPServerConfiguration.HTTPVersion {
     }
 }
 
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 extension NIOHTTPServerConfiguration.TransportSecurity {
     /// Initialize a transport security configuration from a config reader.
     ///
@@ -242,7 +242,7 @@ extension NIOHTTPServerConfiguration.TransportSecurity {
     }
 }
 
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 extension NIOHTTPServerConfiguration.TransportSecurity.TLSCredentials {
     /// Initialize TLS credentials (certificate chain and private key) from a config reader.
     ///
@@ -288,7 +288,7 @@ extension NIOHTTPServerConfiguration.TransportSecurity.TLSCredentials {
     }
 }
 
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 extension NIOHTTPServerConfiguration.TransportSecurity.MTLSTrustConfiguration {
     /// Initialize an mTLS trust configuration from a config reader.
     ///
@@ -360,7 +360,7 @@ extension NIOHTTPServerConfiguration.TransportSecurity.MTLSTrustConfiguration {
     }
 }
 
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 extension NIOHTTPServerConfiguration.BackPressureStrategy {
     /// Initialize the backpressure strategy configuration from a config reader.
     ///
@@ -387,7 +387,7 @@ extension NIOHTTPServerConfiguration.BackPressureStrategy {
     }
 }
 
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 extension NIOHTTPServerConfiguration.HTTP2 {
     /// Initialize a HTTP/2 configuration from a config reader.
     ///
@@ -420,7 +420,7 @@ extension NIOHTTPServerConfiguration.HTTP2 {
     }
 }
 
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 extension NIOHTTPServerConfiguration.HTTP2.GracefulShutdownConfiguration {
     /// Initialize a HTTP/2 graceful shutdown configuration from a config reader.
     ///
@@ -436,15 +436,15 @@ extension NIOHTTPServerConfiguration.HTTP2.GracefulShutdownConfiguration {
     }
 }
 
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 extension Set where Element == NIOHTTPServerConfiguration.HTTPVersion {
     fileprivate enum HTTPVersionKind: String {
         case http1_1
         case http2
     }
 }
 
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 extension NIOHTTPServerConfiguration.TransportSecurity {
     fileprivate enum TransportSecurityMode: String {
         case plaintext
@@ -458,7 +458,7 @@ extension NIOHTTPServerConfiguration.TransportSecurity {
     }
 }
 
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 extension NIOHTTPServerConfiguration.TransportSecurity.MTLSTrustConfiguration {
     /// The supported sources for trust roots.
     fileprivate enum TrustRootsSource: String {
@@ -475,7 +475,7 @@ extension NIOHTTPServerConfiguration.TransportSecurity.MTLSTrustConfiguration {
     }
 }
 
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 extension CertificateVerificationMode {
     fileprivate init(_ mode: NIOHTTPServerConfiguration.TransportSecurity.MTLSTrustConfiguration.VerificationMode) {
         switch mode {

diff --git a/Sources/NIOHTTPServer/Configuration/NIOHTTPServerConfiguration.swift b/Sources/NIOHTTPServer/Configuration/NIOHTTPServerConfiguration.swift
@@ -20,7 +20,7 @@ public import X509
 ///
 /// This structure contains all the necessary configuration options for setting up
 /// and running ``NIOHTTPServer``, including network binding and TLS settings.
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 public struct NIOHTTPServerConfiguration: Sendable {
     /// Specifies where the server should bind and listen for incoming connections.
     ///
@@ -303,7 +303,7 @@ public struct NIOHTTPServerConfiguration: Sendable {
 ///
 /// Indicates whether certificate verification succeeded or failed, and provides associated metadata when verification
 /// is successful.
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 public enum CertificateVerificationResult: Sendable, Hashable {
     /// Metadata resulting from successful certificate verification.
     public struct VerificationMetadata: Sendable, Hashable {
@@ -367,7 +367,7 @@ public struct CertificateVerificationMode: Sendable {
     }
 }
 
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 extension NIOSSL.CertificateVerification {
     /// Maps ``CertificateVerificationMode`` to the NIOSSL representation.
     init(_ verificationMode: CertificateVerificationMode) {
@@ -380,7 +380,7 @@ extension NIOSSL.CertificateVerification {
     }
 }
 
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 extension NIOHTTPServerConfiguration {
     /// Represents an HTTP version.
     public struct HTTPVersion: Sendable, Hashable {
@@ -438,7 +438,7 @@ extension NIOHTTPServerConfiguration {
     }
 }
 
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 extension NIOAsyncSequenceProducerBackPressureStrategies.HighLowWatermark {
     init(_ backpressureStrategy: NIOHTTPServerConfiguration.BackPressureStrategy) {
         switch backpressureStrategy.backing {
@@ -448,7 +448,7 @@ extension NIOAsyncSequenceProducerBackPressureStrategies.HighLowWatermark {
     }
 }
 
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 extension Set where Element == NIOHTTPServerConfiguration.HTTPVersion {
     /// The ALPN protocol identifiers to advertise during the TLS handshake, derived from the supported HTTP versions.
     ///

diff --git a/Sources/NIOHTTPServer/Configuration/TransportSecurity+MTLSTrustConfiguration.swift b/Sources/NIOHTTPServer/Configuration/TransportSecurity+MTLSTrustConfiguration.swift
@@ -16,7 +16,7 @@ import NIOCore
 import NIOSSL
 public import X509
 
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 extension NIOHTTPServerConfiguration.TransportSecurity {
     /// Configures how the server verifies client certificates during mTLS.
     public struct MTLSTrustConfiguration: Sendable {

diff --git a/Sources/NIOHTTPServer/Configuration/TransportSecurity+NIOSSL.swift b/Sources/NIOHTTPServer/Configuration/TransportSecurity+NIOSSL.swift
@@ -16,7 +16,7 @@ import NIOCertificateReloading
 import NIOSSL
 import X509
 
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 extension NIOSSL.TLSConfiguration {
     /// Creates a `NIOSSL.TLSConfiguration` from the server's TLS credentials and mTLS trust configuration.
     static func makeServerConfiguration(

diff --git a/Sources/NIOHTTPServer/Configuration/TransportSecurity+TLSCredentials.swift b/Sources/NIOHTTPServer/Configuration/TransportSecurity+TLSCredentials.swift
@@ -15,7 +15,7 @@
 public import NIOCertificateReloading
 public import X509
 
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 extension NIOHTTPServerConfiguration.TransportSecurity {
     /// Represents the server's TLS credentials: a certificate chain and its corresponding private key.
     ///

diff --git a/Sources/NIOHTTPServer/HTTPRequestConcludingAsyncReader.swift b/Sources/NIOHTTPServer/HTTPRequestConcludingAsyncReader.swift
@@ -27,7 +27,7 @@ import Synchronization
 /// and concluding with the HTTP trailer fields received at the end of the request. This type
 /// follows the ``ConcludingAsyncReader`` pattern, which allows for asynchronous consumption of
 /// a stream with a conclusive final element.
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 public struct HTTPRequestConcludingAsyncReader: ConcludingAsyncReader, ~Copyable {
     /// A reader for HTTP request body chunks that implements the ``AsyncReader`` protocol.
     ///

diff --git a/Sources/NIOHTTPServer/HTTPResponseConcludingAsyncWriter.swift b/Sources/NIOHTTPServer/HTTPResponseConcludingAsyncWriter.swift
@@ -29,7 +29,7 @@ import Synchronization
 ///
 /// This writer is designed to work with HTTP responses where the body is streamed in chunks
 /// and potentially followed by trailer fields.
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 public struct HTTPResponseConcludingAsyncWriter: ConcludingAsyncWriter, ~Copyable {
     /// A writer for HTTP response body chunks that implements the ``AsyncWriter`` protocol.
     ///

diff --git a/Sources/NIOHTTPServer/NIOHTTPServer+ConnectionContext.swift b/Sources/NIOHTTPServer/NIOHTTPServer+ConnectionContext.swift
@@ -16,7 +16,7 @@ import NIOCore
 import NIOSSL
 public import X509
 
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 extension NIOHTTPServer {
     /// Connection-specific information available during request handling.
     ///

diff --git a/Sources/NIOHTTPServer/NIOHTTPServer+HTTP1_1.swift b/Sources/NIOHTTPServer/NIOHTTPServer+HTTP1_1.swift
@@ -20,7 +20,7 @@ import NIOHTTPTypes
 import NIOHTTPTypesHTTP1
 import NIOPosix
 
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 extension NIOHTTPServer {
     /// Serves incoming plaintext HTTP/1.1 connections.
     ///

diff --git a/Sources/NIOHTTPServer/NIOHTTPServer+ListeningAddress.swift b/Sources/NIOHTTPServer/NIOHTTPServer+ListeningAddress.swift
@@ -35,7 +35,7 @@ enum ListeningAddressError: CustomStringConvertible, Error {
     }
 }
 
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 extension NIOHTTPServer {
     func addressesBound(_ addresses: [NIOCore.SocketAddress?]) throws {
         switch self.listeningAddressState.withLockedValue({ $0.addressesBound(addresses) }) {
@@ -63,7 +63,7 @@ extension NIOHTTPServer {
     }
 }
 
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 extension NIOHTTPServer {
     enum State {
         case idle(EventLoopPromise<[SocketAddress]>)
@@ -131,7 +131,7 @@ extension NIOHTTPServer {
     }
 }
 
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 extension NIOHTTPServer.SocketAddress {
     fileprivate init(_ address: NIOCore.SocketAddress?) throws(ListeningAddressError) {
         guard let address, let port = address.port else {

diff --git a/Sources/NIOHTTPServer/NIOHTTPServer+SecureUpgrade.swift b/Sources/NIOHTTPServer/NIOHTTPServer+SecureUpgrade.swift
@@ -28,7 +28,7 @@ import NIOSSL
 import NIOTLS
 import X509
 
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 extension NIOHTTPServer {
     typealias NegotiatedChannel = NIONegotiatedHTTPVersion<
         NIOAsyncChannel<HTTPRequestPart, HTTPResponsePart>,
@@ -315,7 +315,7 @@ extension NIOHTTPServer {
     }
 }
 
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 extension NIOHTTPServer {
     func makeSSLServerHandler(
         _ tlsConfiguration: TLSConfiguration,

diff --git a/Sources/NIOHTTPServer/NIOHTTPServer.swift b/Sources/NIOHTTPServer/NIOHTTPServer.swift
@@ -79,7 +79,7 @@ import X509
 ///     }
 /// }
 /// ```
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 public struct NIOHTTPServer: HTTPServer {
     public typealias RequestConcludingReader = HTTPRequestConcludingAsyncReader
     public typealias ResponseConcludingWriter = HTTPResponseConcludingAsyncWriter
@@ -353,7 +353,7 @@ public struct NIOHTTPServer: HTTPServer {
     }
 }
 
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 extension NIOHTTP2Handler.Configuration {
     init(httpServerHTTP2Configuration http2Config: NIOHTTPServerConfiguration.HTTP2) {
         let clampedTargetWindowSize = Self.clampTargetWindowSize(http2Config.targetWindowSize)

diff --git a/Sources/NIOHTTPServer/NIOSSL+X509.swift b/Sources/NIOHTTPServer/NIOSSL+X509.swift
@@ -20,7 +20,7 @@ import X509
 
 // MARK: X509 to NIOSSL
 
-@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, visionOS 1.0, *)
+@available(anyAppleOS 26.0, *)
 extension NIOSSLCertificate {
     convenience init(_ certificate: Certificate) throws {
         var serializer = DER.Serializer()
@@ -29,28 +29,28 @@ extension NIOSSLCertificate {
     }
 }
 
-@available(macOS 11.0, iOS 14, tvOS 14, watchOS 7, macCatalyst 14, visionOS 1.0, *)
+@available(anyAppleOS 26.0, *)
 extension NIOSSLPrivateKey {
     convenience init(_ privateKey: Certificate.PrivateKey) throws {
         try self.init(bytes: try privateKey.serializeAsPEM().derBytes, format: .der)
     }
 }
 
-@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, visionOS 1.0, *)
+@available(anyAppleOS 26.0, *)
 extension NIOSSLCertificateSource {
     init(_ certificate: Certificate) throws {
         self = .certificate(try NIOSSLCertificate(certificate))
     }
 }
 
-@available(macOS 11.0, iOS 14, tvOS 14, watchOS 7, macCatalyst 14, visionOS 1.0, *)
+@available(anyAppleOS 26.0, *)
 extension NIOSSLPrivateKeySource {
     init(_ privateKey: Certificate.PrivateKey) throws {
         self = .privateKey(try NIOSSLPrivateKey(privateKey))
     }
 }
 
-@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, visionOS 1.0, *)
+@available(anyAppleOS 26.0, *)
 extension NIOSSLTrustRoots {
     init(treatingNilAsSystemTrustRoots certificates: [Certificate]?) throws {
         if let certificates {
@@ -63,7 +63,7 @@ extension NIOSSLTrustRoots {
 
 // MARK: NIOSSL to X509
 
-@available(macOS 10.15, iOS 13, watchOS 6, tvOS 13, visionOS 1.0, *)
+@available(anyAppleOS 26.0, *)
 extension Certificate {
     init(_ certificate: NIOSSLCertificate) throws {
         try self.init(derEncoded: certificate.toDERBytes())

diff --git a/Sources/NIOHTTPServer/ServerChannel.swift b/Sources/NIOHTTPServer/ServerChannel.swift
@@ -15,7 +15,7 @@
 import NIOCore
 import NIOHTTPTypes
 
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 extension NIOHTTPServer {
     /// Abstracts over the two types of server channels ``NIOHTTPServer`` can create: plaintext HTTP/1.1 and Secure
     /// Upgrade.

diff --git a/Sources/NIOHTTPServer/SocketAddress.swift b/Sources/NIOHTTPServer/SocketAddress.swift
@@ -12,7 +12,7 @@
 //
 //===----------------------------------------------------------------------===//
 
-@available(macOS 26.2, iOS 26.2, watchOS 26.2, tvOS 26.2, visionOS 26.2, *)
+@available(anyAppleOS 26.0, *)
 extension NIOHTTPServer {
     /// Represents an IPv4 address.
     public struct IPv4: Hashable, Sendable {