Browser login — the auth key is now optional on both platforms. When the embedded node starts with no key, TailnetNode asks the backend (LocalAPI backendStatus — IPN state, deliberately not filesystem heuristics: tsnet writes logs and a machine key on every start, registered or not) whether a login is needed, triggers login-interactive, surfaces the auth URL through a new statusStream()/.needsLogin, and waits for Running (4-minute deadline, generation-fenced against stop/restart). The Mac auto-opens the login page from Settings ▸ Remote and shows a re-open button; the iPhone auto-opens only during user-initiated pairing (a background reconnect that suddenly needs a login must not eject the user to Safari — Settings ▸ Tailscale carries the link). The remote-access toggle now reflects the in-flight start instead of snapping off for the whole login window, and toggling off mid-start is honored at both commit points (before and after host.start). LAN↔tailnet fallback — picking Tailnet now keeps LAN on too: the host runs both listeners under a new CompositeSyncListener (merged accept stream; one child ending doesn't end the rest) and the pairing QR carries both hints. The phone builds an ordered candidate chain — LAN first (QR hint or Bonjour), tailnet second — and walks it on pair and reconnect, so a phone that leaves the Mac's Wi‑Fi rolls over to the tailnet and rolls back when it returns. A per-channel 4s connect guard (readiness-checking, bound to exactly its channel) keeps a stale LAN hint from hanging the chain; a stale-client guard in consume() keeps a replaced client's tail events from advancing it; chain exhaustion during pairing lands in a terminal failure instead of spinning on "Connecting…"; routine pre-fallback handshake errors no longer flash the red error bubble. "Connected · LAN / Tailnet" shows whichever transport won. Multi-agent review: 11 confirmed findings (incl. the login gate being dead code via tsnet's eager state-dir writes, and two connect-timeout races), all fixed and re-verified. Suite green (24 sync-related tests incl. 3 new CompositeSyncListener tests); macOS + iOS builds clean. Co-Authored-By: Claude Fable 5 <[email protected]>
83 lines
2.9 KiB
Swift
83 lines
2.9 KiB
Swift
import Foundation
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import Network
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import NucleicProtocol
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/// Client-side `FrameChannel` over an outbound `NWConnection` (SYNC_PROTOCOL §3.1). De-frames
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/// inbound bytes with `FrameAccumulator`; length-prefixes outbound frames. Mirrors the host's
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/// `LANChannel` but for the phone's side of the TCP connection.
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final class NWFrameChannel: FrameChannel, @unchecked Sendable {
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let peerDescription: String
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private let connection: NWConnection
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private let queue = DispatchQueue(label: "nucleic.remote.channel")
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private let accumulator = FrameAccumulator()
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private let stream: AsyncStream<Data>
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private let continuation: AsyncStream<Data>.Continuation
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/// State callbacks so the store can reflect connectivity truth (UX_IOS §6).
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var onReady: (@Sendable () -> Void)?
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var onFailed: (@Sendable (String) -> Void)?
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/// Whether TCP reached `.ready` — latched, thread-safe. The connect-timeout guard
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/// polls this instead of relying on a callback that could race connection start.
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private let stateLock = NSLock()
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private var ready = false
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var isReady: Bool {
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stateLock.lock()
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defer { stateLock.unlock() }
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return ready
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}
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init(endpoint: NWEndpoint) {
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let params = NWParameters.tcp
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params.includePeerToPeer = true
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connection = NWConnection(to: endpoint, using: params)
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peerDescription = "\(endpoint)"
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var cont: AsyncStream<Data>.Continuation!
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stream = AsyncStream(bufferingPolicy: .unbounded) { cont = $0 }
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continuation = cont
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connection.stateUpdateHandler = { [weak self] state in
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switch state {
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case .ready: self?.markReady(); self?.onReady?()
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case .failed(let error): self?.onFailed?("\(error)"); self?.continuation.finish()
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case .cancelled: self?.continuation.finish()
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default: break
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}
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}
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connection.start(queue: queue)
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receiveLoop()
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}
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private func markReady() {
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stateLock.lock()
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ready = true
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stateLock.unlock()
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}
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func frames() -> AsyncStream<Data> { stream }
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func send(_ frame: Data) {
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connection.send(content: WireFraming.frame(frame), completion: .idempotent)
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}
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func close() {
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connection.cancel()
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continuation.finish()
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}
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private func receiveLoop() {
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connection.receive(minimumIncompleteLength: 1, maximumLength: 65_536) { [weak self] data, _, isComplete, error in
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guard let self else { return }
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if let data, !data.isEmpty {
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if let frames = try? self.accumulator.push(data) {
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for frame in frames { self.continuation.yield(frame) }
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} else {
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self.close(); return
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}
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}
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if isComplete || error != nil { self.continuation.finish(); return }
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self.receiveLoop()
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}
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}
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}
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