Dario Gabriel LipicarandClaude Opus 5
6ab06ca3eb
It shares the pending registry with event subscriptions but answers a different question, and it had coverage only end-to-end through the QML bridge. Three cases x 6 params: fires true for a module that is already up; holds rather than answering "not reachable" for one that is merely not up YET, then fires exactly once when it appears; and is NOT resurrected by a reconnect. That last one is the asymmetry worth pinning. Event subscriptions ARE re-armed across a reconnect on purpose; a readiness answer already delivered is spent, and re-firing it would re-dispatch whatever call it was gating. Suite 356 -> 374. Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
logos-protocol
The Logos protocol layer: transports, token exchange, and the
language-neutral lp_* C ABI (cpp/logos_protocol.h) that every Logos
SDK builds on.
Extracted from logos-cpp-sdk so that non-C++ SDKs (Rust, …) consume the
same transports, capability/token flow and wire behavior through one stable,
versioned boundary instead of re-wrapping the C++/Qt SDK.
What lives here
- Public C ABI —
cpp/logos_protocol.h: consumer surface (lp_client_*,lp_invoke[_async],lp_subscribe, tokens,lp_get_methods), provider groundwork (lp_provider_*), and the protocol version (LOGOS_PROTOCOL_VERSION_*,lp_protocol_version(),lp_protocol_abi_major()). JSON-in-strings data model; bytes cross the boundary as{"_bytes":"<base64url>"}(lossless, NUL-safe). - Transports — plain TCP / TCP+TLS (Boost.Asio + OpenSSL + nlohmann,
Qt-free),
qt_local, in-memory mock, and Qt Remote Objects (qt_remote— the only Qt-bearing transport). - Consumer core —
LogosAPIClient/LogosAPIConsumerincluding the automaticcapability_module.requestModuletoken-fetch flow (behind the protocol boundary: every language gets it for free). - Provider-side plumbing —
ModuleProxy(auth gate the transports publish) and the abstractLogosProviderObjectinterface (logos_provider_interface.h). - Token manager, transport/registry factories, mode config (remote/local/mock), and the canonical QVariant↔JSON conversion used at the QRO boundary.
logos-cpp-sdk layers the typed C++ developer API (LogosAPI, module
context, code generator, provider base classes) on top of this repo.
Versioning
This repo carries the logos-protocol semver — the single number that governs Logos load/call compatibility. Two participants (modules, hosts, SDKs in any language) interoperate iff they share the same MAJOR. MINOR is additive/back-compatible; PATCH never affects compatibility. SDKs must re-expose the version of the protocol they linked (never mint their own).
Building
# Via workspace
ws build logos-protocol
# Standalone
nix build
# Tests
nix build .#tests
Layering invariant
logos-protocol depends only on Qt / Boost / OpenSSL / nlohmann_json — it
must NEVER depend on logos-cpp-sdk, logos-qt-sdk, logos-rust-sdk, liblogos
or logos-lidl. Everything points inward.