Files
bitchat/bitchat.xcodeproj
jack 7579612c61 Migrate protocol from JSON to binary encoding
This change introduces a comprehensive binary protocol to replace JSON encoding
for all network messages, resulting in ~70% bandwidth reduction and 10-20x
faster parsing.

Key changes:
- Add BinaryEncodingUtils with common binary encoding/decoding operations
- Implement toBinaryData/fromBinaryData for all 9 message types
- Maintain backward compatibility with JSON fallback
- Add safety checks including minimum size validation and data copying
- Fix thread safety issues with concurrent data access
- Update all message handlers to try binary first, then JSON

Benefits:
- Reduced bandwidth usage (critical for Bluetooth)
- Faster message parsing
- Better MTU efficiency
- Eliminates JSON injection vulnerabilities
- Consistent binary format throughout the protocol

The implementation maintains full backward compatibility - new messages are
sent as binary while the app can still receive and process JSON messages
from older clients.
2025-07-22 14:12:39 +02:00
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