Implemented multiple levels of ETCP traffic debugging tests: 1. test_etcp_minimal.c - Basic packet analysis and section parsing: - Single section payload packets - Multi-section packets (TIMESTAMP, ACK, PAYLOAD) - Connection establishment packets (INIT_REQUEST, INIT_RESPONSE) - Detailed section-by-section analysis with timing 2. test_etcp_simple_traffic.c - TUN-less traffic simulation: - Direct packet injection and analysis - Connection state simulation - Traffic generation and processing - Comprehensive packet capture and analysis 3. test_etcp_traffic_flow.c - Full instance simulation: - Two-instance setup with traffic analysis - Packet capture hooks in ETCP pipeline - Traffic analyzer with detailed metrics - Connection establishment debugging Key debugging features added: - Section-by-section packet parsing and validation - Packet ID tracking and sequence analysis - ACK processing with timestamp correlation - Connection handshake simulation - Retransmission request handling - Multi-section packet composition analysis - Traffic flow metrics and timing analysis All tests use comprehensive DEBUG_* output for detailed traffic flow tracing: - Packet type identification - Section length validation - Payload content analysis - Connection state tracking - Timing and sequence verification This enables thorough debugging of ETCP protocol traffic flow, packet processing, and connection establishment without requiring TUN devices or network setup.
Evgeny