tcp rewrite: sender-owned timing and BBR parity#35

Merged

baochunli merged 14 commits into

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Mar 31, 2026

Commits on Mar 31, 2026

chore(tcp): document transport timing invariants

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test(tcp): pin cumulative ACK semantics in sink red tests

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test(tcp): pin sender retransmit and tail semantics

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test(tcp): add red coverage for sender transport semantics

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fix(tcp): derive cumulative ACK from the receive frontier

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fix(tcp): move classic sender onto logical segment state

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fix(tcp): gate RTT samples on sender segment state

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docs(tcp): add timing contract note

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test(tcp): add red coverage for BBR timing semantics

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fix(tcp): align BBR packet timing with sender state

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fix(tcp): ignore dupacks beyond outstanding data

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fix(bbr): preserve timeout order and ACK RTT sampling

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test(tcp): add end-to-end retransmit latency coverage

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docs(test): add additional instructions in README about running tests.
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