feat(quic): implement Path MTU Discovery (PMTUD) - RFC 8899#439
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Implement Path MTU Discovery (PMTUD) for QUIC per RFC 9000 Section 14 and RFC 8899 (DPLPMTUD algorithm). - Add pmtud_controller class with DPLPMTUD state machine - Support binary search-based MTU probing - Handle probe acknowledgments and losses - Support ICMP Packet Too Big handling - Add black hole detection and recovery - Integrate with connection class - Update congestion controller MTU on discovery Closes #407
Add comprehensive test coverage for PMTUD controller: - Initial state and configuration tests - Enable/disable/reset functionality - Binary search convergence test - Probe loss handling and search range reduction - ICMP Packet Too Big handling - Black hole detection and recovery - Timeout handling - Custom configuration (jumbo frames) - MTU re-validation tests All 16 tests pass.
- Add PMTUD feature entry to CHANGELOG.md under [Unreleased] - Add Path MTU Discovery section to QUIC features in FEATURES.md - Document RFC 8899 DPLPMTUD algorithm and capabilities
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* feat(quic): implement PMTUD controller for path MTU discovery Implement Path MTU Discovery (PMTUD) for QUIC per RFC 9000 Section 14 and RFC 8899 (DPLPMTUD algorithm). - Add pmtud_controller class with DPLPMTUD state machine - Support binary search-based MTU probing - Handle probe acknowledgments and losses - Support ICMP Packet Too Big handling - Add black hole detection and recovery - Integrate with connection class - Update congestion controller MTU on discovery Closes #407 * test(quic): add unit tests for PMTUD controller Add comprehensive test coverage for PMTUD controller: - Initial state and configuration tests - Enable/disable/reset functionality - Binary search convergence test - Probe loss handling and search range reduction - ICMP Packet Too Big handling - Black hole detection and recovery - Timeout handling - Custom configuration (jumbo frames) - MTU re-validation tests All 16 tests pass. * docs: update CHANGELOG and FEATURES for PMTUD support - Add PMTUD feature entry to CHANGELOG.md under [Unreleased] - Add Path MTU Discovery section to QUIC features in FEATURES.md - Document RFC 8899 DPLPMTUD algorithm and capabilities
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Summary
pmtud_controllerclass with complete state machine for MTU probingChanges
New Files
include/kcenon/network/protocols/quic/pmtud_controller.h- PMTUD controller headersrc/protocols/quic/pmtud_controller.cpp- PMTUD controller implementationtests/test_quic_pmtud.cpp- Unit testsModified Files
include/kcenon/network/protocols/quic/connection.h- Add PMTUD API to connection classsrc/protocols/quic/connection.cpp- Implement PMTUD methodsCMakeLists.txt- Add new source filetests/CMakeLists.txt- Add new test targetdocs/CHANGELOG.md- Document new featuredocs/FEATURES.md- Update QUIC feature listFeatures
Test plan
Closes #407