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Wire the peer link into the client (R76 slice 2) - #135
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📝 WalkthroughWalkthroughThe change adds the ChangesDevice-to-device peer links
Priority: ⬇️ Low Estimated code review effort: 4 (Complex) | ~60 minutes Change: Feature Sequence Diagram(s)sequenceDiagram
participant Server
participant DeviceA
participant DeviceB
participant DeviceC
Server->>DeviceA: Deliver revocation list for DeviceC
DeviceB->>DeviceA: Establish peer link
DeviceA->>DeviceB: Send revocation list
DeviceB->>DeviceC: Refuse peer link using updated revocation state
Merge Risk: 🟡 Moderate · up to The peer-link integration adds certificate-lifecycle and revocation behavior. Several gaps remain. A device whose certificate was withdrawn or revoked can still briefly link to peers. A revoked peer can stay linked if a list arrives during its handshake. Renewal retries can stall for days while the certificate is aging. Fix these before merging. Caution Pre-merge checks failedPlease resolve all errors before merging. Addressing warnings is optional.
❌ Failed checks (1 error, 2 warnings)
✅ Passed checks (9 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 78.61% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 173 functions across 16 files. (8 skipped: 8 unsupported.) Full details: Git Dependency Pin Stays Out Of CommitsExplanation Cargo.lock is modified by this pull request: it adds the Resolution Add an explicit immutable Full details: Crate Readme Is The Crate DocumentationExplanation
✨ Finishing Touches 💡 1📝 Generate docstrings 💡
🧪 Generate unit tests (beta)
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Actionable comments posted: 8
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Inline comments:
Review comments at @crates/connetto-client/src/builder/native.rs:
- Around line 721-729: Validate every deployment root in DeviceSetup::keys
before constructing the peer Node, and return a typed ClientError when a root
lacks a valid certificate key ID. Preserve the existing missing-roots check and
ensure malformed roots do not reach connetto_peer::Node::new.
Review comments at @crates/connetto-client/src/enrolment/task.rs:
- Line 392: Cap the Aging delay computed in run at RECHECK so each hourly look
recomputes the remaining time until end + TOLERANCE, including for clock jumps.
Update the corresponding test in the enrolment tests to expect HOUR rather than
an uncapped wait.
Review comments at @crates/connetto-client/src/enrolment/tests.rs:
- Line 1067: Remove the banner comment preceding the peer-link tests in the
enrolment tests file; leave the tests and surrounding code unchanged.
Review comments at @crates/connetto-peer/README.md:
- Around line 3-5: Add docs.rs and crates.io badges alongside the existing
badges in the README, linking to the connetto-peer documentation and package
pages. State near the badges that they resolve after the first release.
Review comments at @crates/connetto-peer/src/node.rs:
- Around line 184-192: Add a `# Panics` section to the rustdoc for `Node::new`,
documenting that it panics when a root holds no key, as propagated from
`with_liveness`.
- Around line 318-323: Update link to check the node’s serving state before
starting any network I/O, returning LinkError::NotServing when it is stopped.
Update stop_state to clear identity when stopping so a withdrawn or revoked node
cannot retain its certificate for later dials.
- Around line 824-841: Update register_link to recheck whether the peer’s leaf
and issuer chain is revoked while holding state.links’ lock, before inserting
the slot. Reuse or adapt chain_revoked to accept the leaf and issuer data
available during registration, while preserving its existing use in keep_list.
Review comments at @crates/connetto-peer/src/tests.rs:
- Line 1777: Remove the banner comment separating Part A in the tests module;
leave the surrounding proofs and test organization unchanged.
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.github/workflows/ci.yml.github/workflows/coverage.ymlCargo.tomlcrates/connetto-client/Cargo.tomlcrates/connetto-client/src/builder/native.rscrates/connetto-client/src/enrolment/mod.rscrates/connetto-client/src/enrolment/task.rscrates/connetto-client/src/enrolment/tests.rscrates/connetto-client/src/lib.rscrates/connetto-client/tests/it/enrolment.rscrates/connetto-peer/Cargo.tomlcrates/connetto-peer/README.mdcrates/connetto-peer/src/error.rscrates/connetto-peer/src/event.rscrates/connetto-peer/src/frame.rscrates/connetto-peer/src/identity.rscrates/connetto-peer/src/lib.rscrates/connetto-peer/src/link.rscrates/connetto-peer/src/node.rscrates/connetto-peer/src/signer.rscrates/connetto-peer/src/tests.rscrates/connetto-peer/src/verify.rsdocs/architecture/19-device-to-device.mdplans/master-implementation-plan.md
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Codecov Report❌ Patch coverage is Additional details and impacted files@@ Coverage Diff @@
## main #135 +/- ##
==========================================
+ Coverage 86.40% 86.48% +0.08%
==========================================
Files 163 169 +6
Lines 39726 40981 +1255
Branches 39726 40981 +1255
==========================================
+ Hits 34325 35444 +1119
- Misses 3525 3641 +116
- Partials 1876 1896 +20
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This is the second slice of R76. It puts the
connetto-peerlink inside the native client, behind a newpeerfeature, so an enrolled device listens for and dials other devices of its deployment with no server in the loop. The enrolment task, which already tracks the device's certificate, now drives the link from it, following R76's table of link events against the device's standing. A device with a valid certificate listens at the address the builder names and dials withlink_peer. A renewal keeps the port and every live link. An expired certificate, a clock outside the window, a withdrawn certificate or a revocation closes every link and stops the listener, each reported with its own reason. A revocation list a peer sends goes through the same intake as one the server pushes, and every newer list, whatever its source, reaches every link that lacks it.Two decisions taken for this slice also land in
connetto-peer. Each end closes a link when the peer's certificate expires, and the task wakes exactly at its own expiry, so no link outlives a certificate by the hourly look's slack. A renewed certificate travels to every live link in a newCertificateframe and moves that link's deadline, so a renewal never breaks a link. The test against the real server carries R74's proof 3. Three devices enrol, one reports another lost, and the server stops. The third device learns the report only from a peer and refuses the reported device's dial. The branch sits on #134 until that one merges.Enrolled clients had no peer transport, so they could not link directly when the server was unavailable. The
peerfeature adds certificate-authenticated links with revocation-list exchange and bounded liveness checks.The enrolment task keeps the listener and links active while the device certificate is valid, updates them on renewal, and closes them when the certificate becomes unusable or the device is withdrawn or revoked. This ties peer link lifecycle to the same certificate state that governs client enrolment.