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swift: gate the listener API so clients are not forced to iOS 18 / macOS 15 #60

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Merged
barnstar merged 1 commit into from
Aug 31, 2026
Merged

swift: gate the listener API so clients are not forced to iOS 18 / macOS 15 #60

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6 changes: 6 additions & 0 deletions swift/TailscaleKit/IncomingConnection.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,12 @@ import Foundation
/// IncomingConnection is use to read incoming message from an inbound
/// connection. IncomingConnections are not instantiated directly,
/// they are returned by Listener.accept
// Gated so the rest of TailscaleKit can be built for older systems.
// `state()` returns `any AsyncSequence<ListenerState, Never>`, whose `Failure`
// associated type is iOS 18 / macOS 15 only, and that requirement propagates to
// the whole framework even for clients that never listen for inbound
// connections. Annotating the two listener types confines it to them.
@available(iOS 18.0, macOS 15.0, tvOS 18.0, watchOS 11.0, *)
public actor IncomingConnection {
private let logger: LogSink?
private var conn: TailscaleConnection = 0
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6 changes: 6 additions & 0 deletions swift/TailscaleKit/Listener.swift
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Original file line number Diff line number Diff line change
Expand Up @@ -6,6 +6,12 @@ import Foundation

/// A Listener is used to await incoming connections from another
/// Tailnet node.
// Gated so the rest of TailscaleKit can be built for older systems.
// `state()` returns `any AsyncSequence<ListenerState, Never>`, whose `Failure`
// associated type is iOS 18 / macOS 15 only, and that requirement propagates to
// the whole framework even for clients that never listen for inbound
// connections. Annotating the two listener types confines it to them.
@available(iOS 18.0, macOS 15.0, tvOS 18.0, watchOS 11.0, *)
public actor Listener {
private var tailscale: TailscaleHandle
private var listener: TailscaleListener = 0
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