Root cause: When receiving a handshake initiation (32 bytes) from a peer
with whom we already had an established session, the code would destroy
the existing session to "help" the other side. This created a cascade:
- Peer A completes handshake with Peer B
- Peer A sends message, realizes no session, initiates handshake
- Peer B destroys its working session to "help"
- Peer B now has no session, initiates handshake
- Both peers keep destroying each other's sessions
Fix:
- Never destroy an established session when receiving new handshake attempts
- Add early check in handshake initiation to skip if session exists
- Clear handshake rate limit timers when session already established
This eliminates the delays and repeated handshakes seen in the logs.
- Add session migration when peer IDs rotate
- Sessions now follow peers across ID changes via fingerprint
- Add migratePeerSession to NoiseEncryptionService
- Add migrateSession to NoiseSessionManager
- Integrate migration in BluetoothMeshService updatePeerBinding
This fixes the issue where established Noise sessions were lost
when peer IDs rotated, causing "No Noise session" errors and
requiring re-handshake.
- Add Ed25519 signing key pair to NoiseEncryptionService
- Update NoiseIdentityAnnouncement to include signingPublicKey
- Replace HMAC signatures with proper Ed25519 signatures
- Fix timestamp synchronization between signing and verification
- Add signature verification in PeerIdentityBinding
- Persist signing keys in keychain alongside Noise static keys
This provides cryptographic non-repudiation for peer identity claims
and strengthens the security of the identity rotation mechanism.
- Moved encryption/handshake status icons to appear after peer names in sidebar and private message headers
- Converted private messages and channels to slide-over views with smooth transitions
- Added swipe-right gesture to dismiss private chats and channels
- Added vertical separator bars to slide-over views for visual consistency
- Add version negotiation messages (0x20 versionHello, 0x21 versionAck)
- Implement VersionHello and VersionAck message types with platform info
- Add ProtocolVersion struct for version management and negotiation
- Update BinaryProtocol to check supported versions
- Add version negotiation to connection flow before Noise handshake
- Maintain backward compatibility with legacy peers (assume v1)
- Add comprehensive test suite with 40+ test cases
- Update documentation with version negotiation details
This ensures BitChat clients can negotiate protocol versions for smooth
upgrades while maintaining full backward compatibility with existing clients.
- Created separate macOS entitlements file with required Bluetooth permission
- Fixed "Bluetooth unsupported" issue on Mac by adding com.apple.security.device.bluetooth entitlement
- Removed all debug logging from BluetoothMeshService
- Re-enabled scan duty cycling
- Reverted RSSI threshold back to -90 dBm from temporary -100 dBm debug value
- Create separate bitchat-macOS.entitlements file with com.apple.security.device.bluetooth
- Update project.yml to use the macOS-specific entitlements for the macOS target
- Regenerate Xcode project with proper entitlements configuration
This fixes the 'Bluetooth unsupported' issue on macOS which was caused by missing
device.bluetooth entitlement required for sandboxed apps
- Add better state descriptions for both central and peripheral managers
- Add logging when setting up peripheral and adding service
- Temporarily disable scan duty cycling to ensure continuous scanning
- Add service UUID logging during peripheral setup
This should help identify:
1. Why Mac shows 'unsupported' state for Bluetooth
2. Whether services are being added successfully
3. If advertising is actually starting
- Add debug logs to centralManagerDidUpdateState and peripheralManagerDidUpdateState
- Add logging to startServices to show manager states at initialization
- Add logging when peripherals are discovered with RSSI values
- Temporarily lower RSSI threshold from -90 to -100 dBm for testing
- Add logging to show when scanning starts and if it's blocked
- Add development team L3N5LHJD5Y to all targets in project.yml
- Add automatic code signing settings to test targets
- Fix UIRequiresFullScreen setting to false for launch storyboard compatibility
- Update Info.plist with proper launch configuration
- Ensure all targets have consistent code signing configuration
- Add UILaunchStoryboardName to Info.plist
- Add UIRequiresFullScreen setting
- Add UIBackgroundModes for Bluetooth background operations
- Add interface orientation support for iPhone and iPad
- Add development team to all project targets
- Add LaunchScreen.storyboard to properly support all iPhone models
- Configure UILaunchStoryboardName in Info.plist for full screen display
- Add UIRequiresFullScreen to prevent black bars on newer devices
- Update project.yml to include launch screen in iOS target resources
- Add proper interface orientation support for iPhone and iPad
- Split multi-platform target into separate iOS and macOS targets to prevent iOS share extension from being embedded in macOS build
- Add launch screen configuration and full screen support for proper iPhone 16 display
- Configure iOS-specific Info.plist entries for background modes and interface orientations
- Implement share extension to receive URLs from other apps
- Display shared links with emoji indicator and rich preview cards
- Add custom compact link preview with image, title, and domain
- Configure app groups for data sharing between extension and main app
- Handle URL detection and parsing in share extension
- Update message formatting to show only emoji for shared links
- Add proper entitlements and activation rules for share extension
- Capture both URL and title when sharing links
- Create LinkPreviewView component with clickable cards
- Support markdown-style links [title](url)
- Auto-detect plain URLs in messages
- Add link metadata fetching on iOS
- Display clean preview cards with title, URL, and description
- Add debugging logs to help diagnose sharing issues
- Improve completion handling in share extension
- Check for shared content when app becomes active
- Fix async handling of shared content processing
- Create share extension to handle shared content from other apps
- Support sharing text, URLs, and prepare for future image support
- Use app groups for data sharing between extension and main app
- Add URL scheme handling for app communication
- Add entitlements for app groups
- Display system message when content is shared
- Update project configuration to include share extension
- Screenshot notifications now properly appear as system messages
- Send messages directly via mesh service to avoid local echo
- Remove 'private:' prefix from private chat header
- Keep only lock icon and peer name in private chat header
- Detect when users take screenshots on iOS
- Send system notification to all participants
- Works in public chat, channels, and private messages
- Display screenshot notifications as system messages
- Change @user to @name in all documentation
- Change 'blocked users' to 'blocked peers' for consistency
- Add /block and /unblock commands to autocomplete menu
Implemented user blocking functionality:
- /block <nickname> - blocks a user from private messaging and ignores their messages in channels
- /block - lists all blocked users
- /unblock <nickname> - unblocks a user
Implementation details:
- Blocks are stored by public key fingerprint for persistence across sessions
- Blocked users cannot send private messages or have their public messages displayed
- Blocked users are silently ignored (they don't know they're blocked)
- Blocking a user automatically removes them from favorites
- Added getPeerPublicKey() method to BluetoothMeshService for accessing peer identity keys
Fixed multiple threading issues that were causing crashes when users sent messages:
- Added NSLock to synchronize access to recentlySentMessages Set
- Fixed thread-unsafe access to activePeers Set using existing lock
- Removed force unwrapping that could cause crashes
- Added defensive input validation for message sending methods
These fixes address crashes reported in TestFlight where the app would crash when typing and sending messages.
- Changed system messages from green to grey with consistent 12pt font
- Fixed text wrapping to flow naturally under timestamps
- Changed default nickname to anonXXXX format
- Replaced text with icon representations in status bar
- Added icons to sidebar section headers
- Made autocomplete UI consistent between commands and @mentions
- Added welcome message for new users (3 second delay)
- Changed sidebar header to 'YOUR NETWORK'
- Added command aliases (/join, /msg)
- Implemented /hug and /slap commands with haptic feedback
- Improved command help display with alphabetization
- Renamed 'rooms' to 'channels' throughout entire codebase
- Fix race condition where recentlySentMessages Set was being modified from different queues
- Move all Set.remove operations to messageQueue instead of main queue
- Prevents EXC_BREAKPOINT crash when removing elements during concurrent access
