Crate zerodds_discovery 

Crate zerodds-discovery. Safety classification: SAFE.

DDSI-RTPS discovery for ZeroDDS — SPDP, SEDP, TypeLookup service.

Spec

• DDSI-RTPS 2.5 §8.5 — Simple Discovery Protocol (SPDP/SEDP).
• DDSI-RTPS 2.5 §8.5.3 — SPDP Builtin-Endpoints.
• DDSI-RTPS 2.5 §8.5.4 — SEDP Builtin-Endpoints.
• XTypes 1.3 §7.6.3.3.4 — TypeLookup-Service (TL_SVC_REQ_{WRITER,READER} + TL_SVC_REPLY_{WRITER,READER}).
• DDS-Security 1.2 §7.4.2 — Stateless + Volatile-Secure builtin endpoints (sub-module security).

Public API

• spdp — SPDP beacon sender + receiver + DiscoveredParticipantsCache with last_seen lease tracking.
• sedp — SEDP stack (cache, reader, writer).
• type_lookup — TypeLookup service server + client + builtin-endpoint GUIDs.
• security — DDS-Security Stateless + Volatile-Secure builtin-endpoint slots.
• capabilities::PeerCapabilities — DDSI capability bits.

Wiring into the DCPS runtime

The discovery primitives are wire-format-complete. Instantiation of the builtin-endpoint reliable writer/reader pairs lives in the DCPS layer (crates/dcps/src/runtime.rs):

• SPDP: best-effort writer + reader on ParticipantBuiltinTopicData.
• SEDP: reliable writer + reader on Publication-/Subscription-BuiltinTopicData.
• TypeLookup: reliable writer + reader on the TypesRequest/ TypesReply topic with a service instance name.

Re-exports

pub use capabilities::PeerCapabilities;

pub use sedp::CacheCaps;

pub use sedp::DiscoveredEndpointsCache;

pub use sedp::DiscoveredPublication;

pub use sedp::DiscoveredSubscription;

pub use spdp::DiscoveredParticipant;

pub use spdp::DiscoveredParticipantsCache;

pub use spdp::SpdpBeacon;

pub use spdp::SpdpError;

pub use spdp::SpdpReader;

Modules

capabilities

Peer capabilities from the BuiltinEndpointSet bitfield.

metrics

Hot-path hook points for zerodds-monitor (zerodds-monitor-1.1 §2.4).

security

DDS-Security builtin-endpoint slots — wire layer.

sedp

Simple Endpoint Discovery Protocol (SEDP) — DDSI-RTPS 2.5 §8.5.4.

spdp

Simple Participant Discovery Protocol (DDSI-RTPS 2.5 §8.5.3).

type_lookup

TypeLookup service — XTypes 1.3 §7.6.3.3.4.