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`FirstFrameHeader::total_body_len` was only used as an input to the configured size check. The completion path removed the partial assembly and dispatched its body without comparing the accumulated length to the declaration, and a single-frame message returned before any comparison. A peer could therefore declare any total that passed the size check, send a different number of bytes, and have the body dispatched unchanged. Treat the declaration as authoritative and enforce it at four points: - a first frame whose body exceeds its declaration is rejected with `DeclaredTotalTooSmall`, because the declaration can never be satisfied; - a single-frame message must match its declaration exactly, or `DeclaredTotalMismatch` is returned; - a continuation that would push the body past the declaration is rejected with `DeclaredTotalExceeded` before its bytes are buffered; and - the completing frame must bring the body to exactly the declared total, or `DeclaredTotalMismatch` is returned. Rejections free the partial assembly, so a mismatched message never stays buffered. Protocols that leave the total as `None` are unaffected. To keep `state.rs` within its 400-line limit, the in-flight state moves to `partial.rs` (which owns the completion check) and the pure predicates to `validation.rs`. The inbound adapter already maps `MessageAssemblyError` to `io::ErrorKind::InvalidData`, so no adapter change is required. Closes #544. Co-Authored-By: Claude Code <noreply@anthropic.com>
Cover every enforcement point from issue #544 directly against the domain state machine: - an under-declared single-frame total; - an over-declared single-frame total; - a first frame that carries more than a multi-frame declaration; - a continuation that would overshoot the declaration; - a final frame short of the declaration; - exact single-frame and multi-frame declarations; - a non-final frame that exactly reaches the declaration; - the `None` opt-out; and - overflow when accumulating the attempted length. The inbound adapter tests prove that a rejection is reported as `InvalidData` through the deserialization-failure counter and that the partial assembly is freed, so a malformed message is never dispatched. The testkit expectation enum and the budget assertion helper gain the three new variants so exhaustive matches keep compiling. Co-Authored-By: Claude Code <noreply@anthropic.com>
Exercise the declared-total contract through the public API: an under-declared and an over-declared single-frame total, a continuation that overshoots the declaration, a final frame that falls short, and an exactly declared multi-frame message that completes. The world fixture gains a `total_body_len` field on `FirstFrameParams` with a `with_total` builder, and the first frame now forwards it to `FirstFrameHeader` instead of always sending `None`. Co-Authored-By: Claude Code <noreply@anthropic.com>
Add ADR 015, which records the decision to treat `FirstFrameHeader::total_body_len` as a protocol commitment rather than an advisory hint, compares that against renaming the field or checking only at completion, and lists the four enforcement points. Update the formal-verification guide to resolve its open question in favour of Position A, tick roadmap items 15.2.2 and 15.5.1, describe the new errors in the users' guide, and note the breaking change in the changelog. Co-Authored-By: Claude Code <noreply@anthropic.com>
Clippy rejected `PartialAssembly::new` (five arguments) and the `admit_continuation` helper (six) under `too_many_arguments`. Rather than suppress the lint, reduce the parameter lists: - `PartialAssembly::from_first_frame` takes the already-validated `FirstFrameInput`, which carries the header, routing, metadata, and body it previously received separately. - The per-message size cap and aggregate budgets move into `ContinuationLimits`, so a caller cannot pair the cap with the wrong budgets. - The admission checks move onto `PartialAssembly`, next to the accumulated body and declared total they read. Co-Authored-By: Claude Code <noreply@anthropic.com>
The style guide asks an accepted ADR's status section to summarise what was decided, not only point at the implementing issue. State the contract in the status block so a reader can tell what was accepted without reading the whole record. Co-Authored-By: Claude Code <noreply@anthropic.com>
The declared-total tests' continuation helper took five arguments, which trips `clippy::too_many_arguments` under the repository's four-argument threshold. Group the frame parameters into a named `Continuation` struct, matching the guidance to bundle related parameters, and update every call site. Derive `Copy` on the struct so the helper can keep taking it by value without a `needless_pass_by_value` lint. Co-Authored-By: Claude Code <noreply@anthropic.com>
`subject` carried `#[fixture]` but every test called it directly, so the attribute had no effect. Take the state through `#[from(subject)]` instead, which builds a fresh manager per test through the fixture. Merge the three first-frame rejection tests into a single case table: they shared one body and one set of post-conditions, differing only in the declaration, the final-frame flag, and the expected error. The parameterised name records each distinct semantic case. Addresses the two trivial CodeRabbit findings on the declared-total tests. Co-Authored-By: Claude Code <noreply@anthropic.com>
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Summary
VerificationThe author reports that formatting, lint, type-check, test, documentation, Markdown, Nixie, and spelling checks passed. The author also reports a clean CodeRabbit review at WalkthroughThe assembler now enforces ChangesDeclared total body-length enforcement
Sequence Diagram(s)sequenceDiagram
participant MessageAssemblyState
participant validation
participant PartialAssembly
participant AssembledMessage
MessageAssemblyState->>validation: validate_first_frame
MessageAssemblyState->>PartialAssembly: from_first_frame
MessageAssemblyState->>PartialAssembly: admit_continuation
PartialAssembly->>validation: validate_continuation
MessageAssemblyState->>PartialAssembly: append body
PartialAssembly->>validation: validate_completion
PartialAssembly->>AssembledMessage: construct on exact length
Suggested labels: Priority: ➖ Normal Change: Bug fix · Severity of issue fixed: Medium Merge Risk: 🔵 Low · up to
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| Check name | Status | Explanation | Resolution |
|---|---|---|---|
| User-Facing Documentation |  |
Document the behaviour clearly in docs/users-guide.md at lines 1263-1284, including the authoritative declaration, rejection cases, None opt-out, and ADR link. However, this breaking change is not… |
Add a section to docs/v0-3-0-to-v0-4-0-migration-guide.md. Explain that exact total_body_len values are required, None preserves the old behaviour, mismatched messages are rejected, and downstream exhaustive matches on `MessageAssembl… |
| Developer Documentation | |
The pull request changes the message-assembler architecture by adding private validation.rs and partial.rs modules, moving completion ownership to PartialAssembly, and adding the `ContinuationLi… |
Update docs/developers-guide.md with a message-assembly architecture subsection. Document that total_body_len is authoritative, list the first-frame, continuation, and completion checks and their MessageAssemblyError variants, state t… |
| Testing (Property / Proof) | |
The change introduces a length invariant across arbitrary usize values and continuation transitions, but it adds only example-based rstest cases. src/message_assembler/validation.rs:78-100 must … |
Add a substantive proptest suite for the declared-total validators or the full assembly flow. Generate arbitrary declared totals and accumulated/body lengths, including near-usize::MAX values, and assert that checked addition rejects ov… |
| Testing (Compile-Time / Ui) | |
The pull request introduces compile-time API behaviour. It adds three variants to public MessageAssemblyError (src/message_assembler/error.rs:85-177) and re-exports that enum (`src/message_assembl… |
Add a trybuild compile_fail fixture that imports MessageAssemblyError and exhaustively matches the pre-change variants, add its checked .stderr expectation, and register it in tests/compile_error.rs. Keep the runtime tests for decla… |
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Check name Status Explanation Title check Pass the title. It clearly describes the main change and references issue #544as required.Description check Pass the description. It directly explains the declared-total enforcement, error handling, documentation, tests, and issue #544.Linked Issues check Issue #544requires enforcement of declared totals at first-frame, continuation, and completion boundaries, explicit errors, and regression tests.validation.rsrejects unsatisfiable first frames, c…Out of Scope Changes check Keep the changes within issue #544. The new error variants, validation split, test-kit updates, inbound-adapter tests, behavioural scenarios, changelog, ADR, and user documentation directly support th…Docstring Coverage Docstring coverage is 98.28% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 58 functions across 17 files. (7 skipped: 7… Testing (Overall) The new tests substantively guard the declared-total behaviour. src/message_assembler/declared_total_tests.rs:94-326exercises unsatisfiable first frames, single-frame mismatch, continuation oversho…Module-Level Documentation All Rust modules changed by this pull request have module-level //!documentation. The new modules describe their purpose and role:src/message_assembler/partial.rs:1-9, `src/message_assembler/val…Testing (Unit And Behavioural) Pass the testing check. Unit tests cover first-frame under-declaration, single-frame mismatch and equality, continuation overshoot, completion mismatch, exact multi-frame completion, the Noneopt-ou…Unit Architecture The change preserves the architecture boundaries. validation.rs:27-125contains pure, explicitResultvalidators.MessageAssemblyState::accept_*remains the command boundary and mutates only ass…Domain Architecture Keep the change within the domain boundary. validation.rscontains pure declared-total rules and returns domain-levelMessageAssemblyErrorvariants.PartialAssemblyandMessageAssemblyStateap…Observability PASS — The new declared-total rejection paths use the existing inbound failure boundary. process_first_frameandprocess_continuation_framepassMessageAssemblyErrordetails to `DeserFailureTrac…Full details: Linked Issues check
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Explanation
Issue
#544requires enforcement of declared totals at first-frame, continuation, and completion boundaries, explicit errors, and regression tests.validation.rsrejects unsatisfiable first frames, continuation overshoots, and completion mismatches.partial.rsvalidates before buffering and on completion.state.rsfrees failed assemblies. The tests cover single-frame mismatches, continuation overshoot, final under-length, exact totals,None, and overflow. Satisfy the linked coding requirements.
Full details: Out of Scope Changes check
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Explanation
Keep the changes within issue
#544. The new error variants, validation split, test-kit updates, inbound-adapter tests, behavioural scenarios, changelog, ADR, and user documentation directly support the declared-total contract or its compatibility impact. No unrelated implementation change is established.
Full details: Docstring Coverage
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Explanation
Docstring coverage is 98.28% which is sufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 58 functions across 17 files. (7 skipped: 7 unsupported.)
Full details: Testing (Overall)
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Explanation
The new tests substantively guard the declared-total behaviour.
src/message_assembler/declared_total_tests.rs:94-326exercises unsatisfiable first frames, single-frame mismatch, continuation overshoot, completion mismatch, exact single- and multi-frame totals, theNoneopt-out, assembly removal, and accumulation overflow. Assertions check exactMessageAssemblyErrorvariants and lengths, message bodies, and buffered state. The BDD scenarios are wired intests/scenarios/message_assembly_scenarios.rs:72-108; the fixture passestotal_body_lenthrough to the protocol header intests/fixtures/message_assembly.rs:136-148, and the steps assert errors, completion bodies, and an empty buffer. The inbound tests insrc/app/frame_handling/assembly_tests/declared_total.rs:21-109also verify no dispatch, one deserialisation failure, and removal after a continuation rejection. These tests would fail if the new validation were removed or bypassed.
Full details: Module-Level Documentation
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Explanation
All Rust modules changed by this pull request have module-level
//!documentation. The new modules describe their purpose and role:src/message_assembler/partial.rs:1-9,src/message_assembler/validation.rs:1-23, andsrc/message_assembler/declared_total_tests.rs:1-6. Existing module documentation remains present insrc/message_assembler/mod.rs:1-21,src/message_assembler/budget.rs:1-6,src/message_assembler/state.rs:1-5, and the inbound test and testkit modules. The documentation explains the module function and its relationship to adjacent components where needed.
Full details: Testing (Unit And Behavioural)
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Explanation
Pass the testing check. Unit tests cover first-frame under-declaration, single-frame mismatch and equality, continuation overshoot, completion mismatch, exact multi-frame completion, the
Noneopt-out, boundary exhaustion, cleanup, andusizeoverflow insrc/message_assembler/declared_total_tests.rs:206-449. The tests assert error variants, lengths, dispatched bodies, and buffered-state invariants, and they are registered insrc/message_assembler/tests.rs:211-215. Behavioural scenarios driveMessageAssemblyStatethrough theMessageAssemblyWorldframe API and assert rejection, buffer removal, and exact completion intests/features/message_assembly.feature:72-104andtests/fixtures/message_assembly.rs:136-177,210-237. The inbound adapter tests send encoded frame payloads throughassemble_if_needed, then verify no dispatch, one deserialisation failure, and assembly cleanup insrc/app/frame_handling/assembly_tests/declared_total.rs:22-109. The adapter maps assembly errors toInvalidDataatsrc/app/frame_handling/assembly.rs:241-247,270-276. This provides meaningful unit, behavioural, and integration-boundary coverage for the changed workflow.
Full details: Unit Architecture
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Explanation
The change preserves the architecture boundaries.
validation.rs:27-125contains pure, explicitResultvalidators.MessageAssemblyState::accept_*remains the command boundary and mutates only assembly state;PartialAssembly::admit_continuationperforms related admission checks beforepush_body, andinto_messagemakes completion validation fallible. Query methods such astotal_buffered_bytesandbuffered_countonly read state. Time is injectable through the existingaccept_*_atandpurge_expired_atAPIs, whilePartialAssembly::from_first_framereceivesstarted_atexplicitly. The added unit, adapter, and BDD tests cover pure validation, state mutation and the public boundary without hidden clients or side-effects.
Full details: Domain Architecture
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Explanation
Keep the change within the domain boundary.
validation.rscontains pure declared-total rules and returns domain-levelMessageAssemblyErrorvariants.PartialAssemblyandMessageAssemblyStateapply those rules to domain assembly state without HTTP, storage, framework, or vendor dependencies. The inbound adapter remains responsible for translating domain errors toio::ErrorKind::InvalidDatainsrc/app/frame_handling/assembly.rs:241-275. The added tests use the domain API and separately verify the adapter mapping. No explicit Domain Architecture failure is introduced.
Full details: Observability
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Explanation
PASS — The new declared-total rejection paths use the existing inbound failure boundary.
process_first_frameandprocess_continuation_framepassMessageAssemblyErrordetails toDeserFailureTracker(src/app/frame_handling/assembly.rs:241-275). The tracker emits warning logs with the operation context,correlation_id, and error details, then increments the boundeddeserializationerror metric and enforces the failure threshold (src/app/frame_handling/core.rs:27-47). The new errors include stable message keys and declared/actual lengths (src/message_assembler/error.rs:133-177). The added adapter tests verify failure counting, no dispatch, and assembly removal. No new process or service boundary requires tracing, and no new alert is needed for this expected protocol rejection.
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Full details: User-Facing Documentation
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Explanation
Document the behaviour clearly in
docs/users-guide.mdat lines 1263-1284, including the authoritative declaration, rejection cases,Noneopt-out, and ADR link. However, this breaking change is not signposted in the existing n+1 migration guide.CHANGELOG.mdlines 14-24 identifies newMessageAssemblyErrorvariants and breaking exhaustive-match impact, whiledocs/v0-3-0-to-v0-4-0-migration-guide.mdcontains no declared-total section. The pull request does not change that migration guide.Resolution
Add a section to
docs/v0-3-0-to-v0-4-0-migration-guide.md. Explain that exacttotal_body_lenvalues are required,Nonepreserves the old behaviour, mismatched messages are rejected, and downstream exhaustive matches onMessageAssemblyErrormust handleDeclaredTotalTooSmall,DeclaredTotalExceeded, andDeclaredTotalMismatch. Include a short before-and-after code example where useful.
Full details: Developer Documentation
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Explanation
The pull request changes the message-assembler architecture by adding private
validation.rsandpartial.rsmodules, moving completion ownership toPartialAssembly, and adding theContinuationLimitsabstraction inbudget.rs(diff evidence). ADR 015 documents the contract and module boundary at lines 72-125, and the user guide documents the public behaviour at lines 1263-1287. However,docs/developers-guide.mdis unchanged and its message-assembly section only documents sequence validation at lines 480-503. It does not document the new declared-total boundary or the new internal abstractions. No new execplan was added, and the roadmap items are checked off.Resolution
Update
docs/developers-guide.mdwith a message-assembly architecture subsection. Document thattotal_body_lenis authoritative, list the first-frame, continuation, and completion checks and theirMessageAssemblyErrorvariants, state that rejected continuations and completions remove partial state, and describe the responsibilities ofvalidation.rs,partial.rs,state.rs, andbudget.rs(ContinuationLimits). Link the section to ADR 015 and retain the existing roadmap and user-guide references.
Full details: Testing (Property / Proof)
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Explanation
The change introduces a length invariant across arbitrary
usizevalues and continuation transitions, but it adds only example-basedrstestcases.src/message_assembler/validation.rs:78-100must preserve the declared-total bound, including addition overflow, for every accumulated and frame length. The new tests cover selected values and one overflow boundary insrc/message_assembler/declared_total_tests.rs:78-336, but they do not generate arbitrary totals, frame lengths, or valid/invalid partitions. The repository already usesproptestas a dev-dependency (Cargo.toml:60-70) and in message-series tests, so property testing is available and established.Resolution
Add a substantive
proptestsuite for the declared-total validators or the full assembly flow. Generate arbitrary declared totals and accumulated/body lengths, including near-usize::MAXvalues, and assert that checked addition rejects overflow, values above the declaration reject, values within the declaration accept, and completion accepts exactly the declaration while rejecting both shorter and longer bodies. Generate multi-frame partitions whose sum is below, equal to, or above the declaration, and assert that no overshooting frame is buffered and that only an exact final total dispatches. Keep the existing named regression cases for protocol-specific error variants and assembly cleanup.
Full details: Testing (Compile-Time / Ui)
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Explanation
The pull request introduces compile-time API behaviour. It adds three variants to public
MessageAssemblyError(src/message_assembler/error.rs:85-177) and re-exports that enum (src/message_assembler/mod.rs:34), so downstream exhaustive matches now fail to compile. The repository already uses trybuild (Cargo.toml:83,tests/compile_error.rs:6-18) and has an exhaustive-match UI test for another public error enum. The pull request adds notests/uifixture ortests/compile_error.rsentry forMessageAssemblyError; its new tests only assert runtime enum values. The required compile-time coverage is therefore missing.Resolution
Add a trybuild
compile_failfixture that importsMessageAssemblyErrorand exhaustively matches the pre-change variants, add its checked.stderrexpectation, and register it intests/compile_error.rs. Keep the runtime tests for declared-total behaviour. Add a focused snapshot only if the public error text is treated as a stable UI contract; otherwise retain semantic assertions rather than snapshotting incidental formatting.
- Autofix · Keep fixing CodeRabbit findings and required CI, and resolving merge conflicts
Count each byte against the claim,
Match the total to complete the frame.
Reject the excess, reject the short,
Clear partial state at each abort.
Exact arrivals pass the gate,
And None leaves totals unclaimed.
Comment @coderabbitai help to get the list of available commands.
Reviewer's GuideThe PR makes FirstFrameHeader::total_body_len an authoritative message-assembly invariant: domain validation now rejects unsatisfiable, overflowing, or mismatched bodies before dispatch, typed errors and adapter behavior are covered end to end, and the breaking contract is documented and tested. Sequence diagram for authoritative declared-total message assemblysequenceDiagram
participant Adapter as InboundAdapter
participant State as MessageAssemblyState
participant Validation as validation
participant Partial as PartialAssembly
participant Dispatcher as Dispatcher
Adapter->>State: accept_first_frame(input)
State->>Validation: validate_first_frame(header, body_len)
alt declaration smaller than first body
Validation-->>State: DeclaredTotalTooSmall
State-->>Adapter: InvalidData
else single-frame total mismatch
Validation-->>State: DeclaredTotalMismatch
State-->>Adapter: InvalidData
else multi-frame assembly
State->>Partial: from_first_frame(input)
Adapter->>State: accept_continuation_frame(header, body)
State->>Partial: admit_continuation(body_len, buffered_total, limits)
Partial->>Validation: validate_continuation(key, declared, accumulated, body_len)
alt continuation exceeds declaration
Validation-->>Partial: DeclaredTotalExceeded
State-->>Adapter: InvalidData
else continuation accepted
Partial->>Partial: push_body(body)
State->>Partial: into_message()
Partial->>Validation: validate_completion(key, declared, actual)
alt completed body mismatches declaration
Validation-->>Partial: DeclaredTotalMismatch
State-->>Adapter: InvalidData
else exact declared total
Partial-->>State: AssembledMessage
State->>Dispatcher: dispatch(assembled_message)
end
end
end
Flow diagram for declared-total validation pointsflowchart TD
A[Receive first frame] --> B[validate_first_frame]
B -->|declared total smaller than body| E1[Reject: DeclaredTotalTooSmall]
B -->|single-frame total differs| E2[Reject: DeclaredTotalMismatch]
B -->|valid multi-frame declaration| C[Buffer first-frame body]
C --> D[Receive continuation]
D --> F[validate_continuation]
F -->|would exceed declaration or overflow| E3[Reject: DeclaredTotalExceeded]
F -->|within declaration| G[Buffer continuation before completion]
G --> H{Message complete?}
H -->|no| D
H -->|yes| I[validate_completion]
I -->|assembled length differs| E4[Reject: DeclaredTotalMismatch]
I -->|exact declared length| J[Dispatch assembled message]
E1 --> K[Free partial assembly]
E2 --> K
E3 --> K
E4 --> K
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The decision outcome lists the four enforcement points as a table and bullets, which describes each check in isolation but does not show how they order around buffering and dispatch. Add a flowchart tracing a first frame through its declaration check, continuations through admission, and the completed message through the final comparison, with each rejection feeding the shared "free partial assembly" terminal. The diagram is introduced by a screen-reader description and captioned as Figure 1, per the documentation style guide. Co-Authored-By: Claude Code <noreply@anthropic.com>
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(1 files improve in Code Health)
Gates Failed
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Gates Passed
Reason for failure
| Enforce advisory code health rules | Violations | Code Health Impact | |
|---|---|---|---|
| declared_total_tests.rs | 1 advisory rule | 9.39 | Suppress |
| message_assembly_steps.rs | 1 advisory rule | 9.39 → 9.10 | Suppress |
View Improvements
| File | Code Health Impact | Categories Improved |
|---|---|---|
| state.rs | 9.69 → 10.00 | Complex Method |
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Inline comments:
Review comments at @docs/contents.md:
- Line 68: Update the ADR 015 bullet in the contents list to use a
reference-style link and add its matching reference definition, keeping the
bullet within the 80-column Markdown limit.
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CHANGELOG.mddocs/adr-015-declared-total-body-length-contract.mddocs/contents.mddocs/formal-verification-methods-in-wireframe.mddocs/roadmap.mddocs/users-guide.mdsrc/app/frame_handling/assembly_tests/declared_total.rssrc/app/frame_handling/assembly_tests/mod.rssrc/message_assembler/budget.rssrc/message_assembler/declared_total_tests.rssrc/message_assembler/error.rssrc/message_assembler/mod.rssrc/message_assembler/partial.rssrc/message_assembler/state.rssrc/message_assembler/tests.rssrc/message_assembler/validation.rssrc/testkit/reassembly/message_error.rstests/features/message_assembly.featuretests/fixtures/budget_enforcement.rstests/fixtures/message_assembly.rstests/fixtures/message_assembly_params.rstests/reassembly_assertion_helpers.rstests/scenarios/message_assembly_scenarios.rstests/steps/message_assembly_steps.rs
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| client pool. | ||
| - [ADR 014: server shutdown ownership and terminal observation](adr-014-server-shutdown-ownership.md) | ||
| Proposed awaitable server shutdown and supervisor-failure observation. | ||
| - [ADR 015: declared total body length is authoritative](adr-015-declared-total-body-length-contract.md) |
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📐 Maintainability & Code Quality | 🟡 Minor | ⚡ Quick win
Wrap the new ADR link to 80 columns.
Keep the new bullet within the Markdown width limit. Use a reference-style link.
Triage: [type:docstyle]
Proposed fix
-
-- [ADR 015: declared total body length is authoritative](adr-015-declared-total-body-length-contract.md) +- [ADR 015: declared total body length is authoritative][adr-015] Accepted contract for enforcing `total_body_len` during message assembly. + +[adr-015]: adr-015-declared-total-body-length-contract.md
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Source: Path instructions
Summary
Enforces
FirstFrameHeader::total_body_lenas an authoritative protocolcommitment during message assembly, closing the validation gap described in
#544.
Previously the declared total was only an input to the configured size
limit. The completion path removed the partial assembly and dispatched the
accumulated body without comparing its length to the declaration, and a
single-frame message returned before any comparison at all. A peer could
therefore declare a total that passed the size check, send a different
number of bytes, and have the body dispatched unchanged.
Closes #544.
Changes
Message assembly now enforces the declaration at four points, all in domain
code (
src/message_assembler/):rejected as unsatisfiable (
DeclaredTotalTooSmall).declaration exactly (
DeclaredTotalMismatch).declaration is rejected before its bytes are buffered
(
DeclaredTotalExceeded).exactly (
DeclaredTotalMismatch).Any rejection also frees the partial assembly. Protocols that leave
total_body_lenasNonekeep the previous behaviour.Supporting changes:
MessageAssemblyErrorvariants, documented and matched in thetest kit and assertion helpers. The enum is not
#[non_exhaustive], sothis is a breaking change for downstream exhaustive matches; recorded in
CHANGELOG.md.validationmodule so the state machinestays within its size budget, with in-flight state in
partial.rs.over-declared single-frame totals, an over-declared continuation, a final
frame short of the declaration, exact equality, the
Noneopt-out, andoverflow.
tests/features/message_assembly.featurecovering the same paths through the public API.
InvalidData, counts adeserialization failure, and dispatches nothing.
users' guide, formal-verification guide, roadmap and contents index
updated to match.
Test plan
make check-fmtmake lintmake typecheckmake testmake test-bddmake test-docmake markdownlintmake nixiemake spellingcoderabbit review --agent— clean atedd55a4(0 findings)All gates were run sequentially at the branch head.
References
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Summary by Sourcery
Enforce declared total body lengths as authoritative protocol commitments during message assembly.
Bug Fixes:
Enhancements:
Documentation:
Tests: