2026-10-12 Messaging Weekly

Highlights

• Logos Delivery:
  • v0.39.1 released and taken up by the delivery module.
  • Offline backfill is now one topic-aware engine covering both live-delivery outages and restarts (#4468 … #4474).

Logos Delivery

Messaging API — General Availability

• [Deliverable] Offline periods backfill

  • achieved:
    • feat(messaging): topic records for the backfill (#4468).
    • feat(messaging): backfill engine for outages of live delivery — one in-memory state machine per subscribed topic, replacing the reconnection check and the startup catch-up (#4469), with its receive tests (#4470).
    • feat(messaging): backfill the downtime of a restart from the records (#4471), with its receive tests (#4472).
    • fix(messaging): topic-aware backfill engine, landing the five PRs above (#4474).

• [Deliverable] Integrate Mix into Messaging API

  • achieved:
    • fix(simulations): keep the mixnet simulation off the logos.dev fleet (#4409).
    • fix(chat2mix): replace the nested waitFor and runForever with await (#4410).
  • next:
    • Mix replies can fail for senders behind NAT (#4357).

Logos Chat

Chat — Beta

• [Deliverable] Installation management

  • achieved:
    • feat: unify Ed25519 implementations (#296).

• [Deliverable] Stabilize and polish API

  • achieved:
    • fix(sec): RUSTSEC-2026-0331 (#299).
    • chore: move trait definitions for better dev-ex (#295).

Status

Status: Logos Delivery Integration

• [Deliverable] Status: prepare the network for the Messaging API

  • achieved:
    • feat: configurable shard ids for auto-sharding, so a Messaging API node runs on Status’s shard 32 (#3963).
    • feat: extra listen-only shards, to keep receiving on shard 64 during Status’s shard migration (#4501).

• [Deliverable] Status: build and link Logos Delivery in status-go and status-app

  • achieved:
    • nim-sds and sds-go-bindings moved to nim-ffi v0.3 (nim-sds#105, sds-go-bindings#26), taken up by logos-delivery (#4407).
    • logos-delivery resolves as a Nimble dependency: (#4424, #4429, #4534).
    • logos-delivery-go-bindings moved to the nim-ffi CBOR ABI (#135) and find the installed package by its nimble file (#133).
    • Android and iOS libraries built through Nimble by dependents (#4504, go-bindings#143).
    • Both Go bindings hold the native context as an integer, not a pointer (go-bindings#139, sds-go-bindings#28).
  • next:
    • Get the status-go and status-app CI green on the Nimble build.
  • blockers:
    • Status CI hosts run Nimble 0.22.2 or older; the build needs 0.26.0.

• [Deliverable] Messaging API: close the gaps Status needs

  • achieved:
    • Go bindings expose the kernel API on the MessagingClient’s own node (#140) and report queued sends and the source of received messages (#141).
    • fix(kernel): register WakuMessage under its own proto path, so the bindings load next to go-waku (#144).
    • fix: destroying a node no longer leaks its message store and event descriptors (#4499).
    • fix(ffi): an over-cap request returns an error instead of crashing refc hosts (nim-ffi#226).

Maintenance

• achieved:
  • Releases and deployments:
    • v0.39.1 released (changelog #4427).
    • Deploy v0.39.1 in the status fleet (#4371).
    • infra: support logos-delivery v0.39.0 images (infra-role-nim-waku#54).
    • store: drop the legacy-store protocol on prod (infra-status#71).
    • chore(e2e): run the Status e2e local fleet on logos-delivery v0.39.1 (#22726).
    • fix(functional): re-enable QUIC on the test waku fleet (#7894).
  • Fixes:
    • push filter on a fresh stream to go-waku peers (#4425).
    • abort in-flight dials on stop so stop_node cannot hang (#4423).
    • don’t index empty addrs in logs and metrics (#4421).
    • library: honour the host’s logLevel (#4430).
  • REST and protocol conformance fixes:
    • REST:
      • skip unknown JSON fields (#4428).
      • report why a body cannot be decoded (#4449).
      • reject non-positive store times and negative pageSize (#4441).
      • follow the spec for ascending (#4442).
      • same HTTP status for store errors on the self and peer paths (#4445).
    • lightpush:
      • 400 for INVALID_MESSAGE and 413 for oversize (#4444).
      • pass service BAD_REQUEST through the v3 client (#4440).
    • filter:
      • UNSUBSCRIBE per-requester and all-or-nothing (#4448).
      • reject no pubsubTopic under static sharding (#4446).
    • archive:
      • do not count an already-held message as written or failed (#4447).
    • CLI:
      • merge --rate-limit entries over the default limits (#4443).
  • Review implementation of Store Sync protocol:
    • clamp the sync range to the message time retention, so retention cannot delete messages the sync window still reconciles (#4478).
    • remove the dead storeSync field from WakuConfBuilder (#4475).
  • CI and build:
    • check consumer dependency setup (#4450).
    • fail PRs that break dependency resolution for apps (#4461).
    • check nimble.lock resolution daily and on PRs (#4462).
    • retry transient Nimble download failures (#4465).
    • update the Windows build script (#3912).
  • Dependencies:
    • bump nim-libp2p to 2.4.1 (#4426).
    • bump nim-secp256k1 to v0.8.0.8.0 (#4451, plugin#28).
  • Cleanup:
    • refactor(rest): move REST to a top-level rest/ owned by RestService (#4477).
    • config: deprecate unused node flags, removal in v0.42.0 (#4467).
    • drop the legacy store protocol from wakucanary (#4509).
  • feat: async logos-delivery Rust crate with reliable channels, to replace logos-chat’s hand-written wrapper (rust-bindings#134).