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feat(bindings): every binding names itself in SETUP - #6775
Every binding now names itself in the SETUP Implementation parameter ahead of the Rust core, so an auth service can tell a Python client from a Swift one: moq-py/0.6.0 moq-ffi/0.4.12 moq-net-rs/0.3.10.
Finishes quest/m1/binding-peer-version.md.
Changes
moq-ffi: MoqClientConfig and MoqServerConfig gain implementation, the caller's product tokens joined ahead of moq-ffi/<v> moq-net-rs/<v>. An empty token or stray whitespace fails new with Config. The wasm client honors it too. MoqRequest::peer_implementation() reads what the client advertised.
moq-c: sessions advertise moq-c/<v> moq-net-rs/<v>; moq_client_config and moq_server_config append an implementation prefix, and moq_session_request_peer_implementation reads the peer's.
Wrappers set their own token from their package version:
moq-py: importlib.metadata.version("moq-rs"), dev from a source tree. Request.peer_implementation.
moq-go: the module version Go embeds in the binary's build info (dev for a source-tree or replaced build). Request.PeerImplementation().
moq-kt: generated at build time from the moq.version Gradle property. Moq.connect and Server.listen keep a caller's implementation ahead of moq-kt/<v>, since the config is the raw record.
moq-swift and moq-dart: a dev placeholder in source, stamped by sh/swift/package.sh and sh/dart/package.sh (the same pattern as moq_ffi's ffiVersion and JS's version.ts). Request.peerImplementation.
cpp/moq: every type is generated, so it exports moq::IMPLEMENTATION (moq-cpp/<v>, from a CMake-generated moq/version.hpp) for callers to set; doc/lib/cpp says so.
OBS: moq-obs/<v> moq-cpp/<v> on both the output and the source. PLUGIN_VERSION_STRING is now defined for every build, not only the Qt dock's.
Regenerated dart/moq_ffi. Each binding's connect test asserts the advertised value starts with its own token, read back through the server's request.
moq-c (additive, appended so a zeroed struct keeps working): implementation/implementation_len on moq_client_config and moq_server_config, moq_session_request_peer_implementation.
Wrappers (additive): the request accessor in each; moq::IMPLEMENTATION in C++.
Choices made unattended
Added a peer accessor on the request. The quest scoped one config field, but its tests read the value back "through a local server's peer accessor", and none existed. MoqRequest mirrors moq-tokio's Request::peer_implementation, available before accept like path/query, which is where an auth decision is made.
Wrappers with their own config types do not expose a caller prefix (py, go, swift, dart). Nothing needs it yet; Kotlin, C, and C++ pass the raw config, so there the caller's tokens go first.
moq-c keeps the prefix field the quest planned, though its stated consumers (cpp/moq, OBS) now sit on moq-ffi: it keeps moq-c's config mirroring moq-ffi's.
Product token names: moq-py, moq-go, moq-kt, moq-swift, moq-dart, moq-c, moq-cpp, moq-obs, with dev where no version is available at build time, matching moq-net-js/dev.
Checks
just check passes.
just py test, just kt check, just go check, just dart check, just cpp check, just obs compile, just obs check, and the OBS unit tests (sh/obs/unit.sh plain) pass locally.
just test interop --all and just rs wasm pass.
Not run: Swift (no toolchain on this Linux host); CI covers it.
No actionable new bugs found. Wrappers prepend their identity while native bindings consistently append their own and the core token. Prefix validation, native/wasm propagation, generated Dart serialization, package-version stamping, and OBS caller migrations are internally consistent. Capturing peer identity on the request is a useful, narrowly scoped addition; the documentation correctly treats it as untrusted telemetry.
Verification: GitHub source/diff inspection only; I did not run builds, tests, packaging, or cross-language interoperability checks. Existing broad FFI dependency floors remain a release-integration concern, not a new finding in this change.
The change adds implementation-token configuration and peer-identifier access across the Rust APIs and language bindings. Wrappers set versioned identifiers, and tests check identifiers advertised in SETUP. Build and packaging scripts generate or stamp package versions. The C++ documentation is updated, and the completed binding-version quest entry and planning document are removed.
Priority: Normal
Merge Risk: Moderate · up to 6d1f2
Published Dart consumers may be unable to compile with an allowed older FFI release. Raise the dependency floor before merging.
Pre-merge checks: 4 · 1
Failed checks: 1 warning
Check name
Status
Explanation
Resolution
Docstring Coverage
Docstring coverage is 61.22% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 49 functions across 34 files. (9 skipped:…
Write docstrings for the functions missing them to satisfy the coverage threshold.
Passed checks: 4 passed
Check name
Status
Explanation
Title check
The title "feat(bindings): every binding names itself in SETUP" describes the main change: each language binding now advertises its own product token in the SETUP Implementation parameter ahead of the…
Description check
The description states the change directly: each binding names itself in the SETUP Implementation parameter, with an example token string. It lists the per-binding changes (moq-ffi, moq-c, the wrapper…
Linked Issues check
Check skipped because no linked issues were found for this pull request.
Out of Scope Changes check
Check skipped because no linked issues were found for this pull request.
Full details: Title check
Explanation
The title "feat(bindings): every binding names itself in SETUP" describes the main change: each language binding now advertises its own product token in the SETUP Implementation parameter ahead of the Rust core tokens. It is specific and concise, and it matches the summary, the description, and the objectives. The conventional-commit prefix is acceptable.
Full details: Description check
Explanation
The description states the change directly: each binding names itself in the SETUP Implementation parameter, with an example token string. It lists the per-binding changes (moq-ffi, moq-c, the wrappers, OBS, and the regenerated dart/moq_ffi), the public API and wire impact, and the checks run. It is consistent with the raw summary and the objectives.
Full details: Docstring Coverage
Explanation
Docstring coverage is 61.22% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 49 functions across 34 files. (9 skipped: 9 unsupported.)
Resolution
Write docstrings for the functions missing them to satisfy the coverage threshold.
Finishing Touches
✨ Simplify code
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Actionable comments posted: 1
🪄 Fix comments: Fix CodeRabbit comments on this PR
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Inline comments:
Review comments at @dart/moq/lib/src/client.dart:
- Line 95: Raise the declared moq_ffi dependency floor to the first release
whose generated FFI config types both include the implementation field passed by
the wrapper; ensure the published package no longer permits versions such as
^0.4.3 that lack these fields.
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Maintainer decision (2026-10-25): the hand-written moq-c ships at this cut with parity for every m1 binding feature, so keep the moq-c half. Please correct the quest text saying its consumers moved to moq-ffi (the generated C line is now m2; see moq-dev/moq#6798).
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Every binding now names itself in the SETUP Implementation parameter ahead of the Rust core, so an auth service can tell a Python client from a Swift one:
moq-py/0.6.0 moq-ffi/0.4.12 moq-net-rs/0.3.10.Finishes
quest/m1/binding-peer-version.md.Changes
MoqClientConfigandMoqServerConfiggainimplementation, the caller's product tokens joined ahead ofmoq-ffi/<v> moq-net-rs/<v>. An empty token or stray whitespace failsnewwithConfig. The wasm client honors it too.MoqRequest::peer_implementation()reads what the client advertised.moq-c/<v> moq-net-rs/<v>;moq_client_configandmoq_server_configappend animplementationprefix, andmoq_session_request_peer_implementationreads the peer's.moq-py:importlib.metadata.version("moq-rs"),devfrom a source tree.Request.peer_implementation.moq-go: the module version Go embeds in the binary's build info (devfor a source-tree or replaced build).Request.PeerImplementation().moq-kt: generated at build time from themoq.versionGradle property.Moq.connectandServer.listenkeep a caller'simplementationahead ofmoq-kt/<v>, since the config is the raw record.moq-swiftandmoq-dart: adevplaceholder in source, stamped bysh/swift/package.shandsh/dart/package.sh(the same pattern asmoq_ffi'sffiVersionand JS'sversion.ts).Request.peerImplementation.cpp/moq: every type is generated, so it exportsmoq::IMPLEMENTATION(moq-cpp/<v>, from a CMake-generatedmoq/version.hpp) for callers to set;doc/lib/cppsays so.moq-obs/<v> moq-cpp/<v>on both the output and the source.PLUGIN_VERSION_STRINGis now defined for every build, not only the Qt dock's.dart/moq_ffi. Each binding's connect test asserts the advertised value starts with its own token, read back through the server's request.Public API and wire impact
MoqClientConfig::implementation,MoqServerConfig::implementation,MoqRequest::peer_implementation().implementation/implementation_lenonmoq_client_configandmoq_server_config,moq_session_request_peer_implementation.moq::IMPLEMENTATIONin C++.Choices made unattended
MoqRequestmirrors moq-tokio'sRequest::peer_implementation, available before accept likepath/query, which is where an auth decision is made.moq-py,moq-go,moq-kt,moq-swift,moq-dart,moq-c,moq-cpp,moq-obs, withdevwhere no version is available at build time, matchingmoq-net-js/dev.Checks
just checkpasses.just py test,just kt check,just go check,just dart check,just cpp check,just obs compile,just obs check, and the OBS unit tests (sh/obs/unit.sh plain) pass locally.just test interop --allandjust rs wasmpass.(Written by Claude Opus 5.5)
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