From e2d76428ad876ba10e09d7c8fb2d4b3be59f4cc2 Mon Sep 17 00:00:00 2001 From: Leo Dion Date: Mon, 15 Jun 2026 17:26:19 -0400 Subject: [PATCH 1/3] Apply AtLeast customizations onto v2.0.0-alpha.3 --- .../Documentation/IMPLEMENTATION_PLAN.md | 413 ------------------ Examples/Sundial/Documentation/RESUME_HERE.md | 301 ------------- .../Sundial/WATCHCONNECTIVITY_DIAGNOSTICS.md | 251 ----------- 3 files changed, 965 deletions(-) delete mode 100644 Examples/Sundial/Documentation/IMPLEMENTATION_PLAN.md delete mode 100644 Examples/Sundial/Documentation/RESUME_HERE.md delete mode 100644 Examples/Sundial/WATCHCONNECTIVITY_DIAGNOSTICS.md diff --git a/Examples/Sundial/Documentation/IMPLEMENTATION_PLAN.md b/Examples/Sundial/Documentation/IMPLEMENTATION_PLAN.md deleted file mode 100644 index b2158665..00000000 --- a/Examples/Sundial/Documentation/IMPLEMENTATION_PLAN.md +++ /dev/null @@ -1,413 +0,0 @@ -# Sundial Demo - Implementation Plan - -**Status**: Phase 1 Complete - Foundation Established -**Last Updated**: 2025-10-26 -**Task Master**: Task 13 - Migrate Sundial demo application to SundialKit v2.0.0 - -## Project Overview - -This demo showcases SundialKit v2.0.0 with focus on: -1. **Binary Protobuf Messaging** - Efficient binary encoding with BinaryMessagable -2. **Latency Measurement** - Round-trip time tracking across transport methods -3. **Transport Route Comparison** - sendMessage vs updateApplicationContext behavior - -Two implementation variants: -- **SundialDemoCombine**: @MainActor + Combine publishers (v1 compatibility) -- **SundialDemoStream**: Actor-based + AsyncStream (modern async/await) - ---- - -## ✅ Phase 1: Foundation (COMPLETED) - -### Directory Structure -``` -Examples/Sundial/ -├── Protos/ # Protocol Buffer schemas ✓ -│ ├── color_message.proto # Simple color (16 bytes) ✓ -│ ├── complex_message.proto # Complex nested (256+ bytes) ✓ -│ └── latency_test.proto # Ping/pong testing ✓ -├── Sources/ -│ ├── Shared/ # Common code ✓ -│ │ ├── Models/ -│ │ │ ├── ProtoExtensions.swift # BinaryMessagable conformance ✓ -│ │ │ ├── LatencyTracker.swift # Latency tracking ✓ -│ │ │ └── TransportMethod.swift # Transport enum ✓ -│ │ ├── Utilities/ -│ │ │ ├── Color+Components.swift # Color helpers ✓ -│ │ │ └── Date+Milliseconds.swift # Date helpers ✓ -│ │ └── Views/ # (Next phase) -│ ├── SundialDemoCombine/ # (Next phase) -│ └── SundialDemoStream/ # (Next phase) -├── Scripts/ -│ └── generate-protos.sh # Protobuf generation script ✓ -├── Package.swift # SPM configuration ✓ -└── README.md # Documentation ✓ -``` - -### Key Accomplishments - -1. **Protobuf Schemas Defined** ✓ - - `ColorMessage`: Simple color data (red/green/blue/alpha + timestamp) - - `ComplexMessage`: Nested message with sensors, device info, color history - - `LatencyTestRequest/Reply`: Ping/pong with timestamps - -2. **BinaryMessagable Direct Conformance** ✓ - - No wrapper pattern needed - - Simple extensions on SwiftProtobuf types - - Convenience helpers for SwiftUI Color conversion - -3. **Shared Infrastructure** ✓ - - `TransportMethod` enum with metadata - - `LatencyTracker` for performance measurement - - Utility extensions for Date and Color - -4. **Build Configuration** ✓ - - Package.swift with all dependencies - - Script for protobuf code generation - - Comprehensive README - ---- - -## 📋 Phase 2: Shared UI Components (NEXT) - -### Components to Create - -#### 1. MetricCard.swift -Reusable card for displaying key-value metrics: -```swift -struct MetricCard: View { - let title: String - let value: String - let subtitle: String? - let icon: String - let color: Color -} -``` - -Used for: -- RTT display -- Payload size -- Success rate -- Encode/decode times - -#### 2. TransportBadge.swift -Visual indicator for transport method: -```swift -struct TransportBadge: View { - let method: TransportMethod - let isActive: Bool -} -``` - -Shows icon + name with color coding. - -#### 3. LatencyGraph.swift -Line chart for latency history: -```swift -struct LatencyGraph: View { - let measurements: [LatencyTracker.Measurement] - let height: CGFloat = 150 -} -``` - -Displays last 20 measurements with color coding by transport method. - -#### 4. MessageHistoryRow.swift -Row item for message history list: -```swift -struct MessageHistoryRow: View { - let timestamp: Date - let method: TransportMethod - let size: Int - let rtt: TimeInterval? - let success: Bool -} -``` - -#### 5. ConnectionStatusView.swift -Real-time connection health indicator: -```swift -struct ConnectionStatusView: View { - let isReachable: Bool - let activationState: ActivationState - let lastUpdate: Date -} -``` - -Compact footer showing network + connectivity status. - -#### 6. ColorPreview.swift -Color circle with metadata: -```swift -struct ColorPreview: View { - let color: Color - let timestamp: Date? - let source: String? - let size: CGFloat = 60 -} -``` - ---- - -## 📋 Phase 3: Combine Variant Implementation - -### 3.1 App Structure - -**SundialApp.swift** -```swift -@main -struct SundialApp: App { - var body: some Scene { - WindowGroup { - ContentView() - } - } -} -``` - -**ContentView.swift** -```swift -struct ContentView: View { - var body: some View { - TabView { - MessageLabView() - .tabItem { Label("Transport", systemImage: "arrow.left.arrow.right") } - - LatencyDashboardView() - .tabItem { Label("Latency", systemImage: "clock") } - - ProtocolComparisonView() - .tabItem { Label("Protocol", systemImage: "chart.bar") } - - DiagnosticsView() - .tabItem { Label("Diagnostics", systemImage: "wrench") } - } - } -} -``` - -### 3.2 ViewModels - -Each tab needs a ViewModel with ConnectivityObserver and/or NetworkObserver: - -**MessageLabViewModel.swift** -- Manages message payload builder -- Handles transport method selection -- Sends/receives ColorMessage and ComplexMessage -- Tracks send status - -**LatencyViewModel.swift** -- Uses LatencyTracker -- Sends LatencyTestRequest messages -- Processes LatencyTestReply -- Generates statistics - -**ProtocolViewModel.swift** -- Compares Dictionary vs Protobuf encoding -- Measures encoding/decoding times -- Calculates size savings -- Runs interactive tests - -**DiagnosticsViewModel.swift** -- Monitors connection health -- Displays error log -- Shows performance counters -- Provides raw state dump - -### 3.3 Views - -#### Tab 1: MessageLabView.swift -Sections: -1. Payload Builder (complexity slider) -2. Transport Method Control (auto/manual override) -3. Send Button -4. Sent/Received Display - -#### Tab 2: LatencyDashboardView.swift -Sections: -1. Live RTT Metrics (large display) -2. Statistics Cards (avg/min/max/stddev) -3. Latency Breakdown (encode/network/decode) -4. History Graph -5. Test Runner - -#### Tab 3: ProtocolComparisonView.swift -Sections: -1. Encoding Comparison (side-by-side) -2. Complexity Scaling Table -3. Interactive Test -4. Protocol Schema Display - -#### Tab 4: DiagnosticsView.swift -Sections: -1. Connection Health (reachability + session state) -2. Message Queue Status -3. Transport History (ScrollView) -4. Error Log -5. Performance Counters - ---- - -## 📋 Phase 4: Stream Variant Implementation - -Port all Combine ViewModels to Stream equivalents: -- Replace @Published with AsyncStream -- Replace Combine publishers with actor methods -- Use async/await throughout -- Maintain identical UI - ---- - -## 📋 Phase 5: Testing & Polish - -### Integration Tests -- Protobuf encoding/decoding -- Transport method selection logic -- Latency measurement accuracy -- UI state updates - -### UI Tests -- Tab navigation -- Message sending flow -- Error handling -- Connection state transitions - -### Polish -- Animations -- Error messages -- Loading states -- Accessibility - ---- - -## Implementation Notes - -### Protobuf Code Generation - -Before building, generate Swift code from .proto files: - -```bash -cd Examples/Sundial -./Scripts/generate-protos.sh -``` - -This creates `Sources/Shared/Generated/*.pb.swift` files. - -### Direct BinaryMessagable Conformance - -Key insight: No wrapper pattern needed! - -```swift -extension Sundial_Demo_ColorMessage: BinaryMessagable { - public init(from data: Data) throws { - try self.init(serializedData: data) // SwiftProtobuf already has this! - } - - public func encode() throws -> Data { - try serializedData() // SwiftProtobuf already has this! - } -} -``` - -### Transport Method Selection Logic - -```swift -func selectTransportMethod(isReachable: Bool, override: TransportMethod?) -> TransportMethod { - if let override = override { - // Manual override for testing - guard !override.requiresReachability || isReachable else { - throw TransportError.notReachable - } - return override - } - - // Automatic selection - return isReachable ? .sendMessage : .updateApplicationContext -} -``` - -### Latency Measurement Pattern - -```swift -// 1. Start timer -let sendTime = Date() - -// 2. Encode -let encodeStart = Date() -let data = try message.encode() -let encodeTime = Date().timeIntervalSince(encodeStart) - -// 3. Send and await reply -let reply = try await connectivityObserver.sendMessage(data) - -// 4. Decode -let decodeStart = Date() -let replyMsg = try LatencyTestReply(from: reply) -let decodeTime = Date().timeIntervalSince(decodeStart) - -// 5. Record measurement -let receiveTime = Date() -latencyTracker.recordMeasurement( - .init( - sequenceNumber: sequence, - sendTime: sendTime, - receiveTime: receiveTime, - transportMethod: .sendMessage, - payloadSize: data.count, - encodeTime: encodeTime, - decodeTime: decodeTime - ) -) -``` - ---- - -## Success Criteria - -- ✅ Protobuf messages show 75%+ size reduction vs dictionary -- ✅ Latency measurements accurate within 5ms -- ✅ Transport method selection correct based on reachability -- ✅ All routes work (sendMessage, updateApplicationContext, sendMessageData) -- ✅ Complex messages encode/decode correctly -- ✅ Connection transitions handled gracefully -- ✅ UI clearly explains behavior -- ✅ Both variants behave identically - ---- - -## Next Session Tasks - -1. **Generate Protobuf Code** - ```bash - cd Examples/Sundial - mkdir -p Sources/Shared/Generated - ./Scripts/generate-protos.sh - ``` - -2. **Create Shared UI Components** - - Start with MetricCard (most reusable) - - Then TransportBadge - - Then ColorPreview - - Test with SwiftUI previews - -3. **Implement First Tab (Combine Variant)** - - MessageLabViewModel - - MessageLabView - - Wire up ConnectivityObserver - - Test message sending - -4. **Continue with remaining tabs** - ---- - -## References - -- **Task Master**: Task 13, Subtask 13.2 (v1.0.0 validation baseline) -- **CLAUDE.md**: Main project documentation -- **Package.swift**: Dependencies and target configuration -- **Protos/**: Protocol Buffer schema definitions -- **Sources/Shared/Models/ProtoExtensions.swift**: BinaryMessagable conformance examples - ---- - -**Resume Point**: Phase 2 - Create shared UI components starting with MetricCard.swift diff --git a/Examples/Sundial/Documentation/RESUME_HERE.md b/Examples/Sundial/Documentation/RESUME_HERE.md deleted file mode 100644 index 6e1b5552..00000000 --- a/Examples/Sundial/Documentation/RESUME_HERE.md +++ /dev/null @@ -1,301 +0,0 @@ -# 🚀 Resume Development Here - -**Last Session**: 2025-10-27 -**Current Phase**: Phase 2 Complete ✅ → Phase 3 Next 📋 -**Task Master**: Task 13.2 (Establish v1.0.0 API validation baseline) - ---- - -## ✅ What's Been Completed - -### Foundation (Phase 1) -- ✅ Project directory structure -- ✅ Protocol Buffer schemas (3 files in `Protos/`) -- ✅ BinaryMessagable conformance (direct, no wrappers!) -- ✅ Shared models (TransportMethod, LatencyTracker) -- ✅ Utility extensions (Color, Date) -- ✅ Package.swift configuration -- ✅ Build scripts and documentation - -### Shared UI Components (Phase 2) ✅ NEW! -- ✅ mise setup for swift-protobuf tools (.mise.toml) -- ✅ Generated Swift code from .proto schemas (3 files) -- ✅ MetricCard.swift - Reusable metric display -- ✅ ColorPreview.swift - Color circle with metadata -- ✅ TransportBadge.swift - Transport method badges -- ✅ ConnectionStatusView.swift - Connection health footer -- ✅ LatencyGraph.swift - Line chart with SwiftUI Charts -- ✅ MessageHistoryRow.swift - Message log list rows - -### Files Created (19 total, +8 in Phase 2) -``` -Protos/ - ├── color_message.proto - ├── complex_message.proto - └── latency_test.proto - -Sources/Shared/ - ├── Generated/ ✅ NEW! - │ ├── color_message.pb.swift (4.2KB) - │ ├── complex_message.pb.swift (11KB) - │ └── latency_test.pb.swift (12KB) - ├── Models/ - │ ├── ProtoExtensions.swift - │ ├── LatencyTracker.swift - │ └── TransportMethod.swift - ├── Views/ ✅ NEW! - │ ├── MetricCard.swift (metric display cards) - │ ├── ColorPreview.swift (color circles) - │ ├── TransportBadge.swift (transport badges) - │ ├── ConnectionStatusView.swift (health footer) - │ ├── LatencyGraph.swift (Charts) - │ └── MessageHistoryRow.swift (log rows) - └── Utilities/ - ├── Color+Components.swift - └── Date+Milliseconds.swift - -Documentation/ - ├── IMPLEMENTATION_PLAN.md - └── RESUME_HERE.md (this file) - -Scripts/ - └── generate-protos.sh ✅ UPDATED (uses mise) - -.mise.toml ✅ NEW! -Package.swift -Package.resolved ✅ NEW! -README.md -``` - ---- - -## 📋 Next Steps (Phase 3) - -### 1. Create Combine App Structure - -Create in `Sources/SundialDemoCombine/`: - -```bash -mkdir -p Sources/SundialDemoCombine/{App,ViewModels,Views} -``` - -#### App Entry Point -```swift -// Sources/SundialDemoCombine/App/SundialApp.swift -@main -struct SundialApp: App { - var body: some Scene { - WindowGroup { - ContentView() - } - } -} -``` - -#### Main TabView -```swift -// Sources/SundialDemoCombine/App/ContentView.swift -struct ContentView: View { - var body: some View { - TabView { - MessageLabView() - .tabItem { Label("Transport", systemImage: "arrow.left.arrow.right") } - - LatencyDashboardView() - .tabItem { Label("Latency", systemImage: "clock") } - - ProtocolComparisonView() - .tabItem { Label("Protocol", systemImage: "chart.bar") } - - DiagnosticsView() - .tabItem { Label("Diagnostics", systemImage: "wrench") } - } - } -} -``` - -### 2. Implement Tab 1 - Message Transport Lab - -Create in `Sources/SundialDemoCombine/`: - -``` -App/ - ├── SundialApp.swift # @main entry point - └── ContentView.swift # TabView with 4 tabs - -ViewModels/ - └── MessageLabViewModel.swift - -Views/ - └── MessageLabView.swift -``` - -**MessageLabView** sections: -- Payload builder (complexity slider) -- Transport method selector -- Send button -- Sent/received display - ---- - -## 🎯 Key Architectural Decisions - -### 1. Direct BinaryMessagable Conformance (No Wrappers!) - -```swift -// ✅ Good - Direct conformance -extension Sundial_Demo_ColorMessage: BinaryMessagable { - public init(from data: Data) throws { - try self.init(serializedData: data) - } - - public func encode() throws -> Data { - try serializedData() - } -} - -// ❌ Bad - Unnecessary wrapper -struct ColorWrapper: BinaryMessagable { - private var proto: ColorMessage - // Extra boilerplate... -} -``` - -### 2. Transport Method Selection - -```swift -// Automatic selection based on reachability -let method = isReachable ? .sendMessage : .updateApplicationContext - -// Manual override for testing -let method = userSelection ?? autoSelected -``` - -### 3. Latency Measurement Pattern - -```swift -let sendTime = Date() -let encodeStart = Date() -let data = try message.encode() -let encodeTime = Date().timeIntervalSince(encodeStart) - -let reply = try await observer.sendMessage(data) - -let decodeStart = Date() -let decoded = try Reply(from: reply) -let decodeTime = Date().timeIntervalSince(decodeStart) - -latencyTracker.record( - sendTime: sendTime, - receiveTime: Date(), - encodeTime: encodeTime, - decodeTime: decodeTime, - ... -) -``` - ---- - -## 📚 Reference Documentation - -1. **IMPLEMENTATION_PLAN.md** - Full implementation plan with all phases -2. **README.md** - Project overview and build instructions -3. **Package.swift** - Dependencies and target configuration -4. **CLAUDE.md** (project root) - SundialKit architecture and usage -5. **ProtoExtensions.swift** - BinaryMessagable conformance examples - ---- - -## 🎓 Understanding the Demo Focus - -This demo is **NOT** a general WatchConnectivity showcase. Focus areas: - -### Primary Goals -1. **Binary Protobuf Messaging** - - Show size reduction (75%+ vs dictionary) - - Measure encoding/decoding speed - - Demonstrate complex nested messages - -2. **Latency Measurement** - - Track round-trip times - - Break down into encode/network/decode - - Compare transport methods - -3. **Transport Route Comparison** - - sendMessage (interactive, requires reachability) - - updateApplicationContext (queued, no reply) - - sendMessageData (binary-only) - -### What To Build (4 Tabs) -- Tab 1: Message Transport Lab (build/send messages) -- Tab 2: Latency Dashboard (RTT metrics and graphs) -- Tab 3: Protocol Comparison (binary vs dictionary) -- Tab 4: Live Diagnostics (connection health, logs) - ---- - -## 🚦 Build & Test Commands - -```bash -# Generate protobuf code -cd Examples/Sundial -./Scripts/generate-protos.sh - -# Build -swift build - -# Run Combine variant -swift run SundialDemoCombine - -# Run Stream variant (later) -swift run SundialDemoStream - -# Test -swift test -``` - ---- - -## ✅ Success Criteria - -- [ ] Protobuf encoding shows 75%+ size reduction -- [ ] Latency measurements accurate within 5ms -- [ ] All transport methods work correctly -- [ ] Complex messages with arrays/nested types work -- [ ] Connection transitions handled gracefully -- [ ] Both Combine and Stream variants identical -- [ ] UI clearly explains what's happening - ---- - -## 💡 Quick Start (Next Session) - -```bash -cd Examples/Sundial - -# 1. Create Combine app structure -mkdir -p Sources/SundialDemoCombine/{App,ViewModels,Views} - -# 2. Create app entry point -touch Sources/SundialDemoCombine/App/SundialApp.swift -# Implement @main App struct - -# 3. Create TabView container -touch Sources/SundialDemoCombine/App/ContentView.swift -# Implement TabView with 4 tabs - -# 4. Implement Tab 1: Message Transport Lab -touch Sources/SundialDemoCombine/ViewModels/MessageLabViewModel.swift -touch Sources/SundialDemoCombine/Views/MessageLabView.swift -# Use ConnectivityObserver from SundialKitCombine -# Use shared components: ColorPreview, TransportBadge, MetricCard - -# 5. Test build -swift build -``` - ---- - -**Status**: Ready for Phase 3 development -**Blockers**: None -**Dependencies**: ✅ All Phase 1 & 2 deliverables complete diff --git a/Examples/Sundial/WATCHCONNECTIVITY_DIAGNOSTICS.md b/Examples/Sundial/WATCHCONNECTIVITY_DIAGNOSTICS.md deleted file mode 100644 index ce9b2d26..00000000 --- a/Examples/Sundial/WATCHCONNECTIVITY_DIAGNOSTICS.md +++ /dev/null @@ -1,251 +0,0 @@ -# WatchConnectivity Diagnostics Summary - -## Issue Investigation: isPairedAppInstalled and Reachability - -### Initial Problem Report -- Error: "No companion device is available" when sending messages via application context -- Connection status shows "Activated but not reachable" -- Testing on physical devices (iPhone + Apple Watch) with Stream demo app - -### Key Findings - -#### 1. Asymmetric Reachability (EXPECTED BEHAVIOR) -**Observation:** -- Apple Watch consistently shows `isReachable: true` -- iPhone consistently shows `isReachable: false` -- **Messages successfully send in both directions** - -**Explanation:** -This is **normal WatchConnectivity behavior**: -- **watchOS**: Actively monitors iPhone reachability (battery less critical) -- **iOS**: Passively monitors Watch reachability (battery saving) -- Reachability can change dynamically during async operations -- State observed before send ≠ state during actual send - -**Evidence from logs:** -``` -📡 isReachable: false ← Snapshot before send -🚀 Sending message... ← Async send begins -✅ Message sent successfully via: binary ← Send succeeds! -``` - -#### 2. isPairedAppInstalled Degradation (XCODE INSTALLATION ISSUE) -**Observation:** -``` -Initial: isPairedAppInstalled: true (on activation) -Degrades to: isPairedAppInstalled: false (milliseconds later) -``` - -**Root Cause:** -Apps installed via **Xcode** during development don't properly register with WatchConnectivity's internal app database. The framework expects apps to be installed through the official Watch app companion installer. - -**System Errors Observed:** -``` -Application context data is nil -Type: Error | Library: WatchConnectivity | Subsystem: com.apple.wcd -``` - -**Impact:** -- UI displays incorrect status (`isPairedAppInstalled: false`) -- **Does NOT prevent message sending** (messages work fine!) -- Only affects status display and application context fallback - -#### 3. Race Condition in State Observation -**Problem:** -Diagnostic info was captured too early, showing stale state values. - -**Fix Applied:** -- Now reads live state from actor immediately before send -- Shows actual transport used after send completes -- Eliminates confusion between predicted and actual transport - -### Binary Message Routing - -The demo app uses **BinaryMessagable** types (Protobuf), which have different routing logic: - -```swift -// Binary messages routing: -if session.isReachable: - Use sendMessageData() for immediate delivery ✅ -else: - Throw error (cannot use application context) ❌ -``` - -**Why messages work despite `isReachable: false` on iPhone:** -WatchConnectivity determines actual reachability during the send operation, not at the time of state observation. - -### Solutions - -#### For Production Deployment -1. **Install via Watch app (RECOMMENDED)**: - - Build & Archive project - - Install iOS app on iPhone via Xcode/TestFlight - - **Install watchOS app via Watch app on iPhone** (not Xcode) - - Launch both apps at least once - - Result: `isPairedAppInstalled` will correctly show `true` - -2. **Benefits**: - - Correct status display - - Application context fallback works properly - - Matches real-world app distribution - -#### For Development Builds (Current State) -1. **Accept the limitations**: - - `isPairedAppInstalled: false` is expected with Xcode installation - - Messages still work fine (via `sendMessageData`) - - Status display is informational only - -2. **Use enhanced diagnostics** (implemented): - - Live state capture immediately before send - - Actual transport logging after send - - Clear understanding of timing issues - -### Code Changes Made - -#### 1. Enhanced Diagnostic Logging -**File**: `StreamMessageLabViewModel.swift` - -**Before**: -```swift -// Captured stale state -print("📡 isReachable: \(isReachable)") // @Published property -// ... send message -``` - -**After**: -```swift -// Capture live state from actor -let liveReachable = await connectivityObserver.isReachable() -let liveActivation = await connectivityObserver.activationState() -let livePairedAppInstalled = await connectivityObserver.isPairedAppInstalled() -#if os(iOS) - let livePaired = await connectivityObserver.isPaired() -#endif - -print("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━") -print("📊 CONNECTIVITY STATE (LIVE)") -print("🔄 Activation State: \(liveActivation)") -print("🔗 isPaired: \(livePaired)") -print("📱 isPairedAppInstalled: \(livePairedAppInstalled)") -print("📡 isReachable: \(liveReachable)") -print("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━") - -let result = try await connectivityObserver.send(message) -print("✅ Message sent successfully via: \(result.context)") -print("📊 Actual transport used: \(result.context.transport)") -``` - -#### 2. WatchConnectivitySession Delegate Logging -**File**: `WatchConnectivitySession+WCSessionDelegate.swift` - -Added debug logging to key callbacks: -```swift -#if DEBUG - print("🔔 WCSession activation complete - state: \(activationState), isReachable: \(wcSession.isReachable), isPairedAppInstalled: \(wcSession.isPairedAppInstalled)") -#endif - -#if DEBUG - print("🔔 WCSession.sessionReachabilityDidChange fired - isReachable: \(session.isReachable)") -#endif -``` - -#### 3. Public API Additions - -**File**: `ConnectivityObserver.swift` - -Added public method to expose `updateApplicationContext`: -```swift -/// Updates the application context with new data. -public func updateApplicationContext(_ context: ConnectivityMessage) throws { - try session.updateApplicationContext(context) -} -``` - -**Note**: This was added for investigation but not used in final solution. - -**File**: `ConnectivitySendContext.swift` - -Added computed property to extract transport from enum: -```swift -/// The transport mechanism used for this send operation, if applicable. -/// Returns `nil` for failure cases. -public var transport: MessageTransport? { - switch self { - case .applicationContext(let transport), .reply(_, let transport): - return transport - case .failure: - return nil - } -} -``` - -This allows cleaner access to the transport mechanism used for successful sends. - -### Verification Steps - -After rebuilding the apps, you should see: - -**Improved Logging**: -``` -📦 Message built successfully, type: Sundial_Demo_ColorMessage -━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ -📊 CONNECTIVITY STATE (LIVE) -🔄 Activation State: activated -🔗 isPaired: true -📱 isPairedAppInstalled: false ← Still false with Xcode install -📡 isReachable: false ← May be false on iPhone -━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ -🚀 Sending message... -✅ Message sent successfully via: reply([:], transport: binary) -📊 Actual transport used: binary ← Shows actual transport -``` - -**Expected Behavior**: -- Messages send successfully from both iPhone and Watch -- Live state may differ from cached @Published properties -- Actual transport used matches `sendMessageData` (binary) - -### Platform-Specific Considerations - -#### watchOS -- `isPaired` always `true` (implicit pairing with iPhone) -- `pairedUpdates()` API not available (marked `@available(watchOS, unavailable)`) -- Generally shows `isReachable: true` more consistently - -#### iOS -- `isPaired` and `pairedUpdates()` available -- More conservative with reachability reporting (battery saving) -- May show `isReachable: false` even when Watch is active - -### Related Files - -**Modified Files**: -- `Examples/Sundial/Sources/SundialDemoStream/ViewModels/StreamMessageLabViewModel.swift` -- `Examples/Sundial/Sources/Shared/Views/ConnectionStatusView.swift` -- `Examples/Sundial/Sources/SundialDemoStream/Views/StreamMessageLabView.swift` -- `Packages/SundialKitStream/Sources/SundialKitStream/MessageRouter.swift` -- `Packages/SundialKitStream/Sources/SundialKitStream/ConnectivityObserver.swift` -- `Sources/SundialKitConnectivity/WatchConnectivitySession+WCSessionDelegate.swift` - -**Key Components**: -- `MessageRouter` - Intelligent transport selection (binary vs. dictionary, immediate vs. background) -- `ConnectivityObserver` - Actor-based observer with AsyncStream APIs -- `WatchConnectivitySession` - Protocol wrapper over WCSession - -### References - -**Apple Documentation**: -- [WatchConnectivity Framework](https://developer.apple.com/documentation/watchconnectivity) -- [WCSession.isReachable](https://developer.apple.com/documentation/watchconnectivity/wcsession/1615683-isreachable) -- [WCSession.isPairedAppInstalled](https://developer.apple.com/documentation/watchconnectivity/wcsession/2854556-ispairedappinstalled) - -**SundialKit Architecture**: -- Layer 1: Core protocols and wrappers (SundialKitCore, SundialKitNetwork, SundialKitConnectivity) -- Layer 2: Observation plugins (SundialKitStream - modern async/await, SundialKitCombine - legacy Combine) -- Message encoding: Binary Protobuf via BinaryMessagable protocol - ---- - -**Date**: 2025-11-10 -**SundialKit Version**: v2.0.0 (Swift 6.1+) -**Issue Status**: Resolved - Messages work correctly, status display explained From c7c1b3a79c1713f5cfa1616984f7a2bb4084233f Mon Sep 17 00:00:00 2001 From: Leo Dion Date: Mon, 15 Jun 2026 17:26:57 -0400 Subject: [PATCH 2/3] chore(subrepo): reset SundialKit sync point to v2.0.0-alpha.3 Co-Authored-By: Claude Opus 4.8 (1M context) --- .../Documentation/IMPLEMENTATION_PLAN.md | 413 ------------------ Examples/Sundial/Documentation/RESUME_HERE.md | 301 ------------- .../Sundial/WATCHCONNECTIVITY_DIAGNOSTICS.md | 251 ----------- 3 files changed, 965 deletions(-) delete mode 100644 Examples/Sundial/Documentation/IMPLEMENTATION_PLAN.md delete mode 100644 Examples/Sundial/Documentation/RESUME_HERE.md delete mode 100644 Examples/Sundial/WATCHCONNECTIVITY_DIAGNOSTICS.md diff --git a/Examples/Sundial/Documentation/IMPLEMENTATION_PLAN.md b/Examples/Sundial/Documentation/IMPLEMENTATION_PLAN.md deleted file mode 100644 index b2158665..00000000 --- a/Examples/Sundial/Documentation/IMPLEMENTATION_PLAN.md +++ /dev/null @@ -1,413 +0,0 @@ -# Sundial Demo - Implementation Plan - -**Status**: Phase 1 Complete - Foundation Established -**Last Updated**: 2025-10-26 -**Task Master**: Task 13 - Migrate Sundial demo application to SundialKit v2.0.0 - -## Project Overview - -This demo showcases SundialKit v2.0.0 with focus on: -1. **Binary Protobuf Messaging** - Efficient binary encoding with BinaryMessagable -2. **Latency Measurement** - Round-trip time tracking across transport methods -3. **Transport Route Comparison** - sendMessage vs updateApplicationContext behavior - -Two implementation variants: -- **SundialDemoCombine**: @MainActor + Combine publishers (v1 compatibility) -- **SundialDemoStream**: Actor-based + AsyncStream (modern async/await) - ---- - -## ✅ Phase 1: Foundation (COMPLETED) - -### Directory Structure -``` -Examples/Sundial/ -├── Protos/ # Protocol Buffer schemas ✓ -│ ├── color_message.proto # Simple color (16 bytes) ✓ -│ ├── complex_message.proto # Complex nested (256+ bytes) ✓ -│ └── latency_test.proto # Ping/pong testing ✓ -├── Sources/ -│ ├── Shared/ # Common code ✓ -│ │ ├── Models/ -│ │ │ ├── ProtoExtensions.swift # BinaryMessagable conformance ✓ -│ │ │ ├── LatencyTracker.swift # Latency tracking ✓ -│ │ │ └── TransportMethod.swift # Transport enum ✓ -│ │ ├── Utilities/ -│ │ │ ├── Color+Components.swift # Color helpers ✓ -│ │ │ └── Date+Milliseconds.swift # Date helpers ✓ -│ │ └── Views/ # (Next phase) -│ ├── SundialDemoCombine/ # (Next phase) -│ └── SundialDemoStream/ # (Next phase) -├── Scripts/ -│ └── generate-protos.sh # Protobuf generation script ✓ -├── Package.swift # SPM configuration ✓ -└── README.md # Documentation ✓ -``` - -### Key Accomplishments - -1. **Protobuf Schemas Defined** ✓ - - `ColorMessage`: Simple color data (red/green/blue/alpha + timestamp) - - `ComplexMessage`: Nested message with sensors, device info, color history - - `LatencyTestRequest/Reply`: Ping/pong with timestamps - -2. **BinaryMessagable Direct Conformance** ✓ - - No wrapper pattern needed - - Simple extensions on SwiftProtobuf types - - Convenience helpers for SwiftUI Color conversion - -3. **Shared Infrastructure** ✓ - - `TransportMethod` enum with metadata - - `LatencyTracker` for performance measurement - - Utility extensions for Date and Color - -4. **Build Configuration** ✓ - - Package.swift with all dependencies - - Script for protobuf code generation - - Comprehensive README - ---- - -## 📋 Phase 2: Shared UI Components (NEXT) - -### Components to Create - -#### 1. MetricCard.swift -Reusable card for displaying key-value metrics: -```swift -struct MetricCard: View { - let title: String - let value: String - let subtitle: String? - let icon: String - let color: Color -} -``` - -Used for: -- RTT display -- Payload size -- Success rate -- Encode/decode times - -#### 2. TransportBadge.swift -Visual indicator for transport method: -```swift -struct TransportBadge: View { - let method: TransportMethod - let isActive: Bool -} -``` - -Shows icon + name with color coding. - -#### 3. LatencyGraph.swift -Line chart for latency history: -```swift -struct LatencyGraph: View { - let measurements: [LatencyTracker.Measurement] - let height: CGFloat = 150 -} -``` - -Displays last 20 measurements with color coding by transport method. - -#### 4. MessageHistoryRow.swift -Row item for message history list: -```swift -struct MessageHistoryRow: View { - let timestamp: Date - let method: TransportMethod - let size: Int - let rtt: TimeInterval? - let success: Bool -} -``` - -#### 5. ConnectionStatusView.swift -Real-time connection health indicator: -```swift -struct ConnectionStatusView: View { - let isReachable: Bool - let activationState: ActivationState - let lastUpdate: Date -} -``` - -Compact footer showing network + connectivity status. - -#### 6. ColorPreview.swift -Color circle with metadata: -```swift -struct ColorPreview: View { - let color: Color - let timestamp: Date? - let source: String? - let size: CGFloat = 60 -} -``` - ---- - -## 📋 Phase 3: Combine Variant Implementation - -### 3.1 App Structure - -**SundialApp.swift** -```swift -@main -struct SundialApp: App { - var body: some Scene { - WindowGroup { - ContentView() - } - } -} -``` - -**ContentView.swift** -```swift -struct ContentView: View { - var body: some View { - TabView { - MessageLabView() - .tabItem { Label("Transport", systemImage: "arrow.left.arrow.right") } - - LatencyDashboardView() - .tabItem { Label("Latency", systemImage: "clock") } - - ProtocolComparisonView() - .tabItem { Label("Protocol", systemImage: "chart.bar") } - - DiagnosticsView() - .tabItem { Label("Diagnostics", systemImage: "wrench") } - } - } -} -``` - -### 3.2 ViewModels - -Each tab needs a ViewModel with ConnectivityObserver and/or NetworkObserver: - -**MessageLabViewModel.swift** -- Manages message payload builder -- Handles transport method selection -- Sends/receives ColorMessage and ComplexMessage -- Tracks send status - -**LatencyViewModel.swift** -- Uses LatencyTracker -- Sends LatencyTestRequest messages -- Processes LatencyTestReply -- Generates statistics - -**ProtocolViewModel.swift** -- Compares Dictionary vs Protobuf encoding -- Measures encoding/decoding times -- Calculates size savings -- Runs interactive tests - -**DiagnosticsViewModel.swift** -- Monitors connection health -- Displays error log -- Shows performance counters -- Provides raw state dump - -### 3.3 Views - -#### Tab 1: MessageLabView.swift -Sections: -1. Payload Builder (complexity slider) -2. Transport Method Control (auto/manual override) -3. Send Button -4. Sent/Received Display - -#### Tab 2: LatencyDashboardView.swift -Sections: -1. Live RTT Metrics (large display) -2. Statistics Cards (avg/min/max/stddev) -3. Latency Breakdown (encode/network/decode) -4. History Graph -5. Test Runner - -#### Tab 3: ProtocolComparisonView.swift -Sections: -1. Encoding Comparison (side-by-side) -2. Complexity Scaling Table -3. Interactive Test -4. Protocol Schema Display - -#### Tab 4: DiagnosticsView.swift -Sections: -1. Connection Health (reachability + session state) -2. Message Queue Status -3. Transport History (ScrollView) -4. Error Log -5. Performance Counters - ---- - -## 📋 Phase 4: Stream Variant Implementation - -Port all Combine ViewModels to Stream equivalents: -- Replace @Published with AsyncStream -- Replace Combine publishers with actor methods -- Use async/await throughout -- Maintain identical UI - ---- - -## 📋 Phase 5: Testing & Polish - -### Integration Tests -- Protobuf encoding/decoding -- Transport method selection logic -- Latency measurement accuracy -- UI state updates - -### UI Tests -- Tab navigation -- Message sending flow -- Error handling -- Connection state transitions - -### Polish -- Animations -- Error messages -- Loading states -- Accessibility - ---- - -## Implementation Notes - -### Protobuf Code Generation - -Before building, generate Swift code from .proto files: - -```bash -cd Examples/Sundial -./Scripts/generate-protos.sh -``` - -This creates `Sources/Shared/Generated/*.pb.swift` files. - -### Direct BinaryMessagable Conformance - -Key insight: No wrapper pattern needed! - -```swift -extension Sundial_Demo_ColorMessage: BinaryMessagable { - public init(from data: Data) throws { - try self.init(serializedData: data) // SwiftProtobuf already has this! - } - - public func encode() throws -> Data { - try serializedData() // SwiftProtobuf already has this! - } -} -``` - -### Transport Method Selection Logic - -```swift -func selectTransportMethod(isReachable: Bool, override: TransportMethod?) -> TransportMethod { - if let override = override { - // Manual override for testing - guard !override.requiresReachability || isReachable else { - throw TransportError.notReachable - } - return override - } - - // Automatic selection - return isReachable ? .sendMessage : .updateApplicationContext -} -``` - -### Latency Measurement Pattern - -```swift -// 1. Start timer -let sendTime = Date() - -// 2. Encode -let encodeStart = Date() -let data = try message.encode() -let encodeTime = Date().timeIntervalSince(encodeStart) - -// 3. Send and await reply -let reply = try await connectivityObserver.sendMessage(data) - -// 4. Decode -let decodeStart = Date() -let replyMsg = try LatencyTestReply(from: reply) -let decodeTime = Date().timeIntervalSince(decodeStart) - -// 5. Record measurement -let receiveTime = Date() -latencyTracker.recordMeasurement( - .init( - sequenceNumber: sequence, - sendTime: sendTime, - receiveTime: receiveTime, - transportMethod: .sendMessage, - payloadSize: data.count, - encodeTime: encodeTime, - decodeTime: decodeTime - ) -) -``` - ---- - -## Success Criteria - -- ✅ Protobuf messages show 75%+ size reduction vs dictionary -- ✅ Latency measurements accurate within 5ms -- ✅ Transport method selection correct based on reachability -- ✅ All routes work (sendMessage, updateApplicationContext, sendMessageData) -- ✅ Complex messages encode/decode correctly -- ✅ Connection transitions handled gracefully -- ✅ UI clearly explains behavior -- ✅ Both variants behave identically - ---- - -## Next Session Tasks - -1. **Generate Protobuf Code** - ```bash - cd Examples/Sundial - mkdir -p Sources/Shared/Generated - ./Scripts/generate-protos.sh - ``` - -2. **Create Shared UI Components** - - Start with MetricCard (most reusable) - - Then TransportBadge - - Then ColorPreview - - Test with SwiftUI previews - -3. **Implement First Tab (Combine Variant)** - - MessageLabViewModel - - MessageLabView - - Wire up ConnectivityObserver - - Test message sending - -4. **Continue with remaining tabs** - ---- - -## References - -- **Task Master**: Task 13, Subtask 13.2 (v1.0.0 validation baseline) -- **CLAUDE.md**: Main project documentation -- **Package.swift**: Dependencies and target configuration -- **Protos/**: Protocol Buffer schema definitions -- **Sources/Shared/Models/ProtoExtensions.swift**: BinaryMessagable conformance examples - ---- - -**Resume Point**: Phase 2 - Create shared UI components starting with MetricCard.swift diff --git a/Examples/Sundial/Documentation/RESUME_HERE.md b/Examples/Sundial/Documentation/RESUME_HERE.md deleted file mode 100644 index 6e1b5552..00000000 --- a/Examples/Sundial/Documentation/RESUME_HERE.md +++ /dev/null @@ -1,301 +0,0 @@ -# 🚀 Resume Development Here - -**Last Session**: 2025-10-27 -**Current Phase**: Phase 2 Complete ✅ → Phase 3 Next 📋 -**Task Master**: Task 13.2 (Establish v1.0.0 API validation baseline) - ---- - -## ✅ What's Been Completed - -### Foundation (Phase 1) -- ✅ Project directory structure -- ✅ Protocol Buffer schemas (3 files in `Protos/`) -- ✅ BinaryMessagable conformance (direct, no wrappers!) -- ✅ Shared models (TransportMethod, LatencyTracker) -- ✅ Utility extensions (Color, Date) -- ✅ Package.swift configuration -- ✅ Build scripts and documentation - -### Shared UI Components (Phase 2) ✅ NEW! -- ✅ mise setup for swift-protobuf tools (.mise.toml) -- ✅ Generated Swift code from .proto schemas (3 files) -- ✅ MetricCard.swift - Reusable metric display -- ✅ ColorPreview.swift - Color circle with metadata -- ✅ TransportBadge.swift - Transport method badges -- ✅ ConnectionStatusView.swift - Connection health footer -- ✅ LatencyGraph.swift - Line chart with SwiftUI Charts -- ✅ MessageHistoryRow.swift - Message log list rows - -### Files Created (19 total, +8 in Phase 2) -``` -Protos/ - ├── color_message.proto - ├── complex_message.proto - └── latency_test.proto - -Sources/Shared/ - ├── Generated/ ✅ NEW! - │ ├── color_message.pb.swift (4.2KB) - │ ├── complex_message.pb.swift (11KB) - │ └── latency_test.pb.swift (12KB) - ├── Models/ - │ ├── ProtoExtensions.swift - │ ├── LatencyTracker.swift - │ └── TransportMethod.swift - ├── Views/ ✅ NEW! - │ ├── MetricCard.swift (metric display cards) - │ ├── ColorPreview.swift (color circles) - │ ├── TransportBadge.swift (transport badges) - │ ├── ConnectionStatusView.swift (health footer) - │ ├── LatencyGraph.swift (Charts) - │ └── MessageHistoryRow.swift (log rows) - └── Utilities/ - ├── Color+Components.swift - └── Date+Milliseconds.swift - -Documentation/ - ├── IMPLEMENTATION_PLAN.md - └── RESUME_HERE.md (this file) - -Scripts/ - └── generate-protos.sh ✅ UPDATED (uses mise) - -.mise.toml ✅ NEW! -Package.swift -Package.resolved ✅ NEW! -README.md -``` - ---- - -## 📋 Next Steps (Phase 3) - -### 1. Create Combine App Structure - -Create in `Sources/SundialDemoCombine/`: - -```bash -mkdir -p Sources/SundialDemoCombine/{App,ViewModels,Views} -``` - -#### App Entry Point -```swift -// Sources/SundialDemoCombine/App/SundialApp.swift -@main -struct SundialApp: App { - var body: some Scene { - WindowGroup { - ContentView() - } - } -} -``` - -#### Main TabView -```swift -// Sources/SundialDemoCombine/App/ContentView.swift -struct ContentView: View { - var body: some View { - TabView { - MessageLabView() - .tabItem { Label("Transport", systemImage: "arrow.left.arrow.right") } - - LatencyDashboardView() - .tabItem { Label("Latency", systemImage: "clock") } - - ProtocolComparisonView() - .tabItem { Label("Protocol", systemImage: "chart.bar") } - - DiagnosticsView() - .tabItem { Label("Diagnostics", systemImage: "wrench") } - } - } -} -``` - -### 2. Implement Tab 1 - Message Transport Lab - -Create in `Sources/SundialDemoCombine/`: - -``` -App/ - ├── SundialApp.swift # @main entry point - └── ContentView.swift # TabView with 4 tabs - -ViewModels/ - └── MessageLabViewModel.swift - -Views/ - └── MessageLabView.swift -``` - -**MessageLabView** sections: -- Payload builder (complexity slider) -- Transport method selector -- Send button -- Sent/received display - ---- - -## 🎯 Key Architectural Decisions - -### 1. Direct BinaryMessagable Conformance (No Wrappers!) - -```swift -// ✅ Good - Direct conformance -extension Sundial_Demo_ColorMessage: BinaryMessagable { - public init(from data: Data) throws { - try self.init(serializedData: data) - } - - public func encode() throws -> Data { - try serializedData() - } -} - -// ❌ Bad - Unnecessary wrapper -struct ColorWrapper: BinaryMessagable { - private var proto: ColorMessage - // Extra boilerplate... -} -``` - -### 2. Transport Method Selection - -```swift -// Automatic selection based on reachability -let method = isReachable ? .sendMessage : .updateApplicationContext - -// Manual override for testing -let method = userSelection ?? autoSelected -``` - -### 3. Latency Measurement Pattern - -```swift -let sendTime = Date() -let encodeStart = Date() -let data = try message.encode() -let encodeTime = Date().timeIntervalSince(encodeStart) - -let reply = try await observer.sendMessage(data) - -let decodeStart = Date() -let decoded = try Reply(from: reply) -let decodeTime = Date().timeIntervalSince(decodeStart) - -latencyTracker.record( - sendTime: sendTime, - receiveTime: Date(), - encodeTime: encodeTime, - decodeTime: decodeTime, - ... -) -``` - ---- - -## 📚 Reference Documentation - -1. **IMPLEMENTATION_PLAN.md** - Full implementation plan with all phases -2. **README.md** - Project overview and build instructions -3. **Package.swift** - Dependencies and target configuration -4. **CLAUDE.md** (project root) - SundialKit architecture and usage -5. **ProtoExtensions.swift** - BinaryMessagable conformance examples - ---- - -## 🎓 Understanding the Demo Focus - -This demo is **NOT** a general WatchConnectivity showcase. Focus areas: - -### Primary Goals -1. **Binary Protobuf Messaging** - - Show size reduction (75%+ vs dictionary) - - Measure encoding/decoding speed - - Demonstrate complex nested messages - -2. **Latency Measurement** - - Track round-trip times - - Break down into encode/network/decode - - Compare transport methods - -3. **Transport Route Comparison** - - sendMessage (interactive, requires reachability) - - updateApplicationContext (queued, no reply) - - sendMessageData (binary-only) - -### What To Build (4 Tabs) -- Tab 1: Message Transport Lab (build/send messages) -- Tab 2: Latency Dashboard (RTT metrics and graphs) -- Tab 3: Protocol Comparison (binary vs dictionary) -- Tab 4: Live Diagnostics (connection health, logs) - ---- - -## 🚦 Build & Test Commands - -```bash -# Generate protobuf code -cd Examples/Sundial -./Scripts/generate-protos.sh - -# Build -swift build - -# Run Combine variant -swift run SundialDemoCombine - -# Run Stream variant (later) -swift run SundialDemoStream - -# Test -swift test -``` - ---- - -## ✅ Success Criteria - -- [ ] Protobuf encoding shows 75%+ size reduction -- [ ] Latency measurements accurate within 5ms -- [ ] All transport methods work correctly -- [ ] Complex messages with arrays/nested types work -- [ ] Connection transitions handled gracefully -- [ ] Both Combine and Stream variants identical -- [ ] UI clearly explains what's happening - ---- - -## 💡 Quick Start (Next Session) - -```bash -cd Examples/Sundial - -# 1. Create Combine app structure -mkdir -p Sources/SundialDemoCombine/{App,ViewModels,Views} - -# 2. Create app entry point -touch Sources/SundialDemoCombine/App/SundialApp.swift -# Implement @main App struct - -# 3. Create TabView container -touch Sources/SundialDemoCombine/App/ContentView.swift -# Implement TabView with 4 tabs - -# 4. Implement Tab 1: Message Transport Lab -touch Sources/SundialDemoCombine/ViewModels/MessageLabViewModel.swift -touch Sources/SundialDemoCombine/Views/MessageLabView.swift -# Use ConnectivityObserver from SundialKitCombine -# Use shared components: ColorPreview, TransportBadge, MetricCard - -# 5. Test build -swift build -``` - ---- - -**Status**: Ready for Phase 3 development -**Blockers**: None -**Dependencies**: ✅ All Phase 1 & 2 deliverables complete diff --git a/Examples/Sundial/WATCHCONNECTIVITY_DIAGNOSTICS.md b/Examples/Sundial/WATCHCONNECTIVITY_DIAGNOSTICS.md deleted file mode 100644 index ce9b2d26..00000000 --- a/Examples/Sundial/WATCHCONNECTIVITY_DIAGNOSTICS.md +++ /dev/null @@ -1,251 +0,0 @@ -# WatchConnectivity Diagnostics Summary - -## Issue Investigation: isPairedAppInstalled and Reachability - -### Initial Problem Report -- Error: "No companion device is available" when sending messages via application context -- Connection status shows "Activated but not reachable" -- Testing on physical devices (iPhone + Apple Watch) with Stream demo app - -### Key Findings - -#### 1. Asymmetric Reachability (EXPECTED BEHAVIOR) -**Observation:** -- Apple Watch consistently shows `isReachable: true` -- iPhone consistently shows `isReachable: false` -- **Messages successfully send in both directions** - -**Explanation:** -This is **normal WatchConnectivity behavior**: -- **watchOS**: Actively monitors iPhone reachability (battery less critical) -- **iOS**: Passively monitors Watch reachability (battery saving) -- Reachability can change dynamically during async operations -- State observed before send ≠ state during actual send - -**Evidence from logs:** -``` -📡 isReachable: false ← Snapshot before send -🚀 Sending message... ← Async send begins -✅ Message sent successfully via: binary ← Send succeeds! -``` - -#### 2. isPairedAppInstalled Degradation (XCODE INSTALLATION ISSUE) -**Observation:** -``` -Initial: isPairedAppInstalled: true (on activation) -Degrades to: isPairedAppInstalled: false (milliseconds later) -``` - -**Root Cause:** -Apps installed via **Xcode** during development don't properly register with WatchConnectivity's internal app database. The framework expects apps to be installed through the official Watch app companion installer. - -**System Errors Observed:** -``` -Application context data is nil -Type: Error | Library: WatchConnectivity | Subsystem: com.apple.wcd -``` - -**Impact:** -- UI displays incorrect status (`isPairedAppInstalled: false`) -- **Does NOT prevent message sending** (messages work fine!) -- Only affects status display and application context fallback - -#### 3. Race Condition in State Observation -**Problem:** -Diagnostic info was captured too early, showing stale state values. - -**Fix Applied:** -- Now reads live state from actor immediately before send -- Shows actual transport used after send completes -- Eliminates confusion between predicted and actual transport - -### Binary Message Routing - -The demo app uses **BinaryMessagable** types (Protobuf), which have different routing logic: - -```swift -// Binary messages routing: -if session.isReachable: - Use sendMessageData() for immediate delivery ✅ -else: - Throw error (cannot use application context) ❌ -``` - -**Why messages work despite `isReachable: false` on iPhone:** -WatchConnectivity determines actual reachability during the send operation, not at the time of state observation. - -### Solutions - -#### For Production Deployment -1. **Install via Watch app (RECOMMENDED)**: - - Build & Archive project - - Install iOS app on iPhone via Xcode/TestFlight - - **Install watchOS app via Watch app on iPhone** (not Xcode) - - Launch both apps at least once - - Result: `isPairedAppInstalled` will correctly show `true` - -2. **Benefits**: - - Correct status display - - Application context fallback works properly - - Matches real-world app distribution - -#### For Development Builds (Current State) -1. **Accept the limitations**: - - `isPairedAppInstalled: false` is expected with Xcode installation - - Messages still work fine (via `sendMessageData`) - - Status display is informational only - -2. **Use enhanced diagnostics** (implemented): - - Live state capture immediately before send - - Actual transport logging after send - - Clear understanding of timing issues - -### Code Changes Made - -#### 1. Enhanced Diagnostic Logging -**File**: `StreamMessageLabViewModel.swift` - -**Before**: -```swift -// Captured stale state -print("📡 isReachable: \(isReachable)") // @Published property -// ... send message -``` - -**After**: -```swift -// Capture live state from actor -let liveReachable = await connectivityObserver.isReachable() -let liveActivation = await connectivityObserver.activationState() -let livePairedAppInstalled = await connectivityObserver.isPairedAppInstalled() -#if os(iOS) - let livePaired = await connectivityObserver.isPaired() -#endif - -print("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━") -print("📊 CONNECTIVITY STATE (LIVE)") -print("🔄 Activation State: \(liveActivation)") -print("🔗 isPaired: \(livePaired)") -print("📱 isPairedAppInstalled: \(livePairedAppInstalled)") -print("📡 isReachable: \(liveReachable)") -print("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━") - -let result = try await connectivityObserver.send(message) -print("✅ Message sent successfully via: \(result.context)") -print("📊 Actual transport used: \(result.context.transport)") -``` - -#### 2. WatchConnectivitySession Delegate Logging -**File**: `WatchConnectivitySession+WCSessionDelegate.swift` - -Added debug logging to key callbacks: -```swift -#if DEBUG - print("🔔 WCSession activation complete - state: \(activationState), isReachable: \(wcSession.isReachable), isPairedAppInstalled: \(wcSession.isPairedAppInstalled)") -#endif - -#if DEBUG - print("🔔 WCSession.sessionReachabilityDidChange fired - isReachable: \(session.isReachable)") -#endif -``` - -#### 3. Public API Additions - -**File**: `ConnectivityObserver.swift` - -Added public method to expose `updateApplicationContext`: -```swift -/// Updates the application context with new data. -public func updateApplicationContext(_ context: ConnectivityMessage) throws { - try session.updateApplicationContext(context) -} -``` - -**Note**: This was added for investigation but not used in final solution. - -**File**: `ConnectivitySendContext.swift` - -Added computed property to extract transport from enum: -```swift -/// The transport mechanism used for this send operation, if applicable. -/// Returns `nil` for failure cases. -public var transport: MessageTransport? { - switch self { - case .applicationContext(let transport), .reply(_, let transport): - return transport - case .failure: - return nil - } -} -``` - -This allows cleaner access to the transport mechanism used for successful sends. - -### Verification Steps - -After rebuilding the apps, you should see: - -**Improved Logging**: -``` -📦 Message built successfully, type: Sundial_Demo_ColorMessage -━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ -📊 CONNECTIVITY STATE (LIVE) -🔄 Activation State: activated -🔗 isPaired: true -📱 isPairedAppInstalled: false ← Still false with Xcode install -📡 isReachable: false ← May be false on iPhone -━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ -🚀 Sending message... -✅ Message sent successfully via: reply([:], transport: binary) -📊 Actual transport used: binary ← Shows actual transport -``` - -**Expected Behavior**: -- Messages send successfully from both iPhone and Watch -- Live state may differ from cached @Published properties -- Actual transport used matches `sendMessageData` (binary) - -### Platform-Specific Considerations - -#### watchOS -- `isPaired` always `true` (implicit pairing with iPhone) -- `pairedUpdates()` API not available (marked `@available(watchOS, unavailable)`) -- Generally shows `isReachable: true` more consistently - -#### iOS -- `isPaired` and `pairedUpdates()` available -- More conservative with reachability reporting (battery saving) -- May show `isReachable: false` even when Watch is active - -### Related Files - -**Modified Files**: -- `Examples/Sundial/Sources/SundialDemoStream/ViewModels/StreamMessageLabViewModel.swift` -- `Examples/Sundial/Sources/Shared/Views/ConnectionStatusView.swift` -- `Examples/Sundial/Sources/SundialDemoStream/Views/StreamMessageLabView.swift` -- `Packages/SundialKitStream/Sources/SundialKitStream/MessageRouter.swift` -- `Packages/SundialKitStream/Sources/SundialKitStream/ConnectivityObserver.swift` -- `Sources/SundialKitConnectivity/WatchConnectivitySession+WCSessionDelegate.swift` - -**Key Components**: -- `MessageRouter` - Intelligent transport selection (binary vs. dictionary, immediate vs. background) -- `ConnectivityObserver` - Actor-based observer with AsyncStream APIs -- `WatchConnectivitySession` - Protocol wrapper over WCSession - -### References - -**Apple Documentation**: -- [WatchConnectivity Framework](https://developer.apple.com/documentation/watchconnectivity) -- [WCSession.isReachable](https://developer.apple.com/documentation/watchconnectivity/wcsession/1615683-isreachable) -- [WCSession.isPairedAppInstalled](https://developer.apple.com/documentation/watchconnectivity/wcsession/2854556-ispairedappinstalled) - -**SundialKit Architecture**: -- Layer 1: Core protocols and wrappers (SundialKitCore, SundialKitNetwork, SundialKitConnectivity) -- Layer 2: Observation plugins (SundialKitStream - modern async/await, SundialKitCombine - legacy Combine) -- Message encoding: Binary Protobuf via BinaryMessagable protocol - ---- - -**Date**: 2025-11-10 -**SundialKit Version**: v2.0.0 (Swift 6.1+) -**Issue Status**: Resolved - Messages work correctly, status display explained From 5bc195d8db47c0eb34848d88b731e26349db03b9 Mon Sep 17 00:00:00 2001 From: Leo Dion Date: Mon, 15 Jun 2026 18:02:43 -0400 Subject: [PATCH 3/3] docs(sundial): restore WATCHCONNECTIVITY_DIAGNOSTICS.md Revert accidental deletion of the diagnostics doc removed in bd71c44. Co-Authored-By: Claude Opus 4.8 (1M context) --- .../Sundial/WATCHCONNECTIVITY_DIAGNOSTICS.md | 251 ++++++++++++++++++ 1 file changed, 251 insertions(+) create mode 100644 Examples/Sundial/WATCHCONNECTIVITY_DIAGNOSTICS.md diff --git a/Examples/Sundial/WATCHCONNECTIVITY_DIAGNOSTICS.md b/Examples/Sundial/WATCHCONNECTIVITY_DIAGNOSTICS.md new file mode 100644 index 00000000..ce9b2d26 --- /dev/null +++ b/Examples/Sundial/WATCHCONNECTIVITY_DIAGNOSTICS.md @@ -0,0 +1,251 @@ +# WatchConnectivity Diagnostics Summary + +## Issue Investigation: isPairedAppInstalled and Reachability + +### Initial Problem Report +- Error: "No companion device is available" when sending messages via application context +- Connection status shows "Activated but not reachable" +- Testing on physical devices (iPhone + Apple Watch) with Stream demo app + +### Key Findings + +#### 1. Asymmetric Reachability (EXPECTED BEHAVIOR) +**Observation:** +- Apple Watch consistently shows `isReachable: true` +- iPhone consistently shows `isReachable: false` +- **Messages successfully send in both directions** + +**Explanation:** +This is **normal WatchConnectivity behavior**: +- **watchOS**: Actively monitors iPhone reachability (battery less critical) +- **iOS**: Passively monitors Watch reachability (battery saving) +- Reachability can change dynamically during async operations +- State observed before send ≠ state during actual send + +**Evidence from logs:** +``` +📡 isReachable: false ← Snapshot before send +🚀 Sending message... ← Async send begins +✅ Message sent successfully via: binary ← Send succeeds! +``` + +#### 2. isPairedAppInstalled Degradation (XCODE INSTALLATION ISSUE) +**Observation:** +``` +Initial: isPairedAppInstalled: true (on activation) +Degrades to: isPairedAppInstalled: false (milliseconds later) +``` + +**Root Cause:** +Apps installed via **Xcode** during development don't properly register with WatchConnectivity's internal app database. The framework expects apps to be installed through the official Watch app companion installer. + +**System Errors Observed:** +``` +Application context data is nil +Type: Error | Library: WatchConnectivity | Subsystem: com.apple.wcd +``` + +**Impact:** +- UI displays incorrect status (`isPairedAppInstalled: false`) +- **Does NOT prevent message sending** (messages work fine!) +- Only affects status display and application context fallback + +#### 3. Race Condition in State Observation +**Problem:** +Diagnostic info was captured too early, showing stale state values. + +**Fix Applied:** +- Now reads live state from actor immediately before send +- Shows actual transport used after send completes +- Eliminates confusion between predicted and actual transport + +### Binary Message Routing + +The demo app uses **BinaryMessagable** types (Protobuf), which have different routing logic: + +```swift +// Binary messages routing: +if session.isReachable: + Use sendMessageData() for immediate delivery ✅ +else: + Throw error (cannot use application context) ❌ +``` + +**Why messages work despite `isReachable: false` on iPhone:** +WatchConnectivity determines actual reachability during the send operation, not at the time of state observation. + +### Solutions + +#### For Production Deployment +1. **Install via Watch app (RECOMMENDED)**: + - Build & Archive project + - Install iOS app on iPhone via Xcode/TestFlight + - **Install watchOS app via Watch app on iPhone** (not Xcode) + - Launch both apps at least once + - Result: `isPairedAppInstalled` will correctly show `true` + +2. **Benefits**: + - Correct status display + - Application context fallback works properly + - Matches real-world app distribution + +#### For Development Builds (Current State) +1. **Accept the limitations**: + - `isPairedAppInstalled: false` is expected with Xcode installation + - Messages still work fine (via `sendMessageData`) + - Status display is informational only + +2. **Use enhanced diagnostics** (implemented): + - Live state capture immediately before send + - Actual transport logging after send + - Clear understanding of timing issues + +### Code Changes Made + +#### 1. Enhanced Diagnostic Logging +**File**: `StreamMessageLabViewModel.swift` + +**Before**: +```swift +// Captured stale state +print("📡 isReachable: \(isReachable)") // @Published property +// ... send message +``` + +**After**: +```swift +// Capture live state from actor +let liveReachable = await connectivityObserver.isReachable() +let liveActivation = await connectivityObserver.activationState() +let livePairedAppInstalled = await connectivityObserver.isPairedAppInstalled() +#if os(iOS) + let livePaired = await connectivityObserver.isPaired() +#endif + +print("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━") +print("📊 CONNECTIVITY STATE (LIVE)") +print("🔄 Activation State: \(liveActivation)") +print("🔗 isPaired: \(livePaired)") +print("📱 isPairedAppInstalled: \(livePairedAppInstalled)") +print("📡 isReachable: \(liveReachable)") +print("━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━") + +let result = try await connectivityObserver.send(message) +print("✅ Message sent successfully via: \(result.context)") +print("📊 Actual transport used: \(result.context.transport)") +``` + +#### 2. WatchConnectivitySession Delegate Logging +**File**: `WatchConnectivitySession+WCSessionDelegate.swift` + +Added debug logging to key callbacks: +```swift +#if DEBUG + print("🔔 WCSession activation complete - state: \(activationState), isReachable: \(wcSession.isReachable), isPairedAppInstalled: \(wcSession.isPairedAppInstalled)") +#endif + +#if DEBUG + print("🔔 WCSession.sessionReachabilityDidChange fired - isReachable: \(session.isReachable)") +#endif +``` + +#### 3. Public API Additions + +**File**: `ConnectivityObserver.swift` + +Added public method to expose `updateApplicationContext`: +```swift +/// Updates the application context with new data. +public func updateApplicationContext(_ context: ConnectivityMessage) throws { + try session.updateApplicationContext(context) +} +``` + +**Note**: This was added for investigation but not used in final solution. + +**File**: `ConnectivitySendContext.swift` + +Added computed property to extract transport from enum: +```swift +/// The transport mechanism used for this send operation, if applicable. +/// Returns `nil` for failure cases. +public var transport: MessageTransport? { + switch self { + case .applicationContext(let transport), .reply(_, let transport): + return transport + case .failure: + return nil + } +} +``` + +This allows cleaner access to the transport mechanism used for successful sends. + +### Verification Steps + +After rebuilding the apps, you should see: + +**Improved Logging**: +``` +📦 Message built successfully, type: Sundial_Demo_ColorMessage +━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ +📊 CONNECTIVITY STATE (LIVE) +🔄 Activation State: activated +🔗 isPaired: true +📱 isPairedAppInstalled: false ← Still false with Xcode install +📡 isReachable: false ← May be false on iPhone +━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ +🚀 Sending message... +✅ Message sent successfully via: reply([:], transport: binary) +📊 Actual transport used: binary ← Shows actual transport +``` + +**Expected Behavior**: +- Messages send successfully from both iPhone and Watch +- Live state may differ from cached @Published properties +- Actual transport used matches `sendMessageData` (binary) + +### Platform-Specific Considerations + +#### watchOS +- `isPaired` always `true` (implicit pairing with iPhone) +- `pairedUpdates()` API not available (marked `@available(watchOS, unavailable)`) +- Generally shows `isReachable: true` more consistently + +#### iOS +- `isPaired` and `pairedUpdates()` available +- More conservative with reachability reporting (battery saving) +- May show `isReachable: false` even when Watch is active + +### Related Files + +**Modified Files**: +- `Examples/Sundial/Sources/SundialDemoStream/ViewModels/StreamMessageLabViewModel.swift` +- `Examples/Sundial/Sources/Shared/Views/ConnectionStatusView.swift` +- `Examples/Sundial/Sources/SundialDemoStream/Views/StreamMessageLabView.swift` +- `Packages/SundialKitStream/Sources/SundialKitStream/MessageRouter.swift` +- `Packages/SundialKitStream/Sources/SundialKitStream/ConnectivityObserver.swift` +- `Sources/SundialKitConnectivity/WatchConnectivitySession+WCSessionDelegate.swift` + +**Key Components**: +- `MessageRouter` - Intelligent transport selection (binary vs. dictionary, immediate vs. background) +- `ConnectivityObserver` - Actor-based observer with AsyncStream APIs +- `WatchConnectivitySession` - Protocol wrapper over WCSession + +### References + +**Apple Documentation**: +- [WatchConnectivity Framework](https://developer.apple.com/documentation/watchconnectivity) +- [WCSession.isReachable](https://developer.apple.com/documentation/watchconnectivity/wcsession/1615683-isreachable) +- [WCSession.isPairedAppInstalled](https://developer.apple.com/documentation/watchconnectivity/wcsession/2854556-ispairedappinstalled) + +**SundialKit Architecture**: +- Layer 1: Core protocols and wrappers (SundialKitCore, SundialKitNetwork, SundialKitConnectivity) +- Layer 2: Observation plugins (SundialKitStream - modern async/await, SundialKitCombine - legacy Combine) +- Message encoding: Binary Protobuf via BinaryMessagable protocol + +--- + +**Date**: 2025-11-10 +**SundialKit Version**: v2.0.0 (Swift 6.1+) +**Issue Status**: Resolved - Messages work correctly, status display explained