2026-09-14 Messaging Weekly

Highlights

• Logos Delivery:
  • Delivery module uses RLN membership module closed:
    • logos-delivery exposes an RLN plugin interface (#4160)
    • logos-delivery-module implements it using logos-rln-module (#94)
    • RLN now runs live in the delivery demo (#27)
  • Offline periods backfill closed — history on your subscribed content topic will be automatically queried from Store nodes for the period node was offline/shutdown.
  • Create Segmentation Library closed — LIP-243 segmentation is now integrated into the Reliable Channel API (#4200)
  • Kicked-off 0.39 release process — check out v0.39.0-rc.2
• Logos Chat:
  • AccountLog (#404) and Profile context (#426) specifications published
  • repository renamed to logos-chat (#248), and the client now defaults to the logos.test delivery network (#247)
• Status:
  • both Status test fleets — functional (#7799) and local e2e (#22362) — now run fresh Logos Delivery images

Logos Delivery

Messaging API — General Availability

• [Deliverable] Offline periods backfill — closed

  • achieved:
    • feat(messaging): Store catch-up across process restarts — complements the reconnection backfill from #3941
    • feat(messaging): tag MessageReceivedEvent with its source, live or history — closes Distinguish live vs. history messages in MessageReceived event

• [Deliverable] Integrate Mix into Messaging API

  • achieved:
    • fix mix send PR review
  • next:
    • fix(health): report Disconnected when required mix is not ready — with anonymityLevel: Required, sends were parked while the node reported Connected
    • Start using mix in the delivery module

Reliable Channel API — Beta

• [Deliverable] Create Segmentation Library — closed

  • achieved:
    • set callbacks nil by default
    • use segment type instead of class

• [Deliverable] Add Segmentation to Reliable Channel API

  • achieved:
    • integrate nim-segmentation
    • feat(examples): demo a segmented send from the C example
    • fix(build): make portable builds the default — fixes the Linux link failure nim-leopard introduced

• [Deliverable] Support different encryption for sync messages

  • achieved:
    • feat(channels): per-channel encryption with app-supplied ciphers — part 1/3
  • next:
    • test(channels): cover per-channel encryption, docs(examples): show per-channel encryption in Nim and C

RLN on Logos Blockchain

• [Deliverable] Implement pluggable RLN membership interface

  • achieved:
    • Pluggable rln api module
    • refactor(rln): configure the RLN plugin over FFI instead of the CLI
  • next:
    • Improve rlnBridge with simplification of hot path

• [Deliverable] Integrate Logos Delivery with RLN on Logos Blockchain and [Deliverable] Implement RLN membership management API — both closed as obsolete

  • the design has changed: logos-delivery no longer knows about LEZ and no longer manages RLN membership. The library supports RLN plugins, and logos-rln-module owns membership behind that interface. Tracked from #448 instead

Logos Chat

Chat — Beta

• [Deliverable] Installation management

  • achieved:
    • drop the installation identity and the record column nothing reads - https://github.com/logos-messaging/logos-chat/pull/244

• [Deliverable] Implement full identity model

  • achieved:
    • Publish AccountLog specification - https://github.com/logos-co/logos-lips/pull/404
    • Publish Profile context specification - https://github.com/logos-co/logos-lips/pull/426

• [Deliverable] Stabilize and polish API

  • achieved:
    • Stabilze repo name to Logos-Chat - https://github.com/logos-messaging/logos-chat/pull/248
    • conversation send/retrieve capability filters : https://github.com/logos-messaging/logos-chat/pull/242
    • Defaults to logos.test delivery network - https://github.com/logos-messaging/logos-chat/pull/247
    • Update Rustls for RUSTSEC-2026-0285 - https://github.com/logos-messaging/logos-chat/pull/254

Logos Core

Logos Core Integration — Phase 3

• [Deliverable] Pluggable RLN membership

  • achieved:
    • Make RLN API module pluggable with logos-delivery, Remove duplicate lib files
    • message source surfaced through the module and the demo: delivery-module#115, demo#31
  • next:
    • feat!: RLN comes from the network preset, not from the client, feat!: RLN comes from the node’s preset, not from configureRln

• [Deliverable] Delivery module uses RLN membership module — closed

  • achieved:
    • feat(rln): own the LEZ knowledge the delivery plugin no longer carries, fix(rln): serve backend lifecycle inline so configureRln cannot deadlock
    • feat: configure RLN in the demo, and show it live

Status

Status: Logos Delivery Integration

• [Deliverable] Integrate Messaging API in status-go
  • achieved:
    • test(functional): migrate the functional-test fleet to a logos-delivery image, test(e2e): migrate the local e2e fleet to a logos-delivery image — both Status test fleets now run Logos Delivery
  • next:
    • ci: test Logos Delivery nightly and issue reporting in Jenkins — replaces the closed #7809
    • feat(messaging): link liblogosdelivery through the Go bindings, build: resolve nim-sds through Nimble and update its pin
  • blockers:
    • both Go-bindings PRs above are still drafts, untouched since 3 Sep

Maintenance

• achieved:
  • deprecate wakunode2 in favour of logosdeliverynode — breaking: env prefix is now LOGOS_DELIVERY_NODE_
  • build: bump Nimble and chronos, simplify build, fix feature defines, run the liblogosdelivery default build again
  • config and tests: make CLI, library and test config defaults consistent, TCP, Discv5, REST auto-port in tests, migrate every FFI example to the current signatures, build them in CI
  • CI: skip CI for docs-only PRs, run the required checks in the merge queue, Windows Nimble reuse and job timeout
  • Logos Core modules now build on aarch64-linux and across platforms: delivery-module#103, chat-module#69, chat-ui#60, demo#28
  • publish logos-rln-modules build artifacts to the Logos Attic cache, infra-ci#294
  • docs: add a page comparing logos.dev and logos.test
  • refactor: stop relying on libp2p’s internal withValue helper
• next:
  • Prepare release 0.39.0
  • one node image and a standalone rlnkeystore tool
  • bump nim-libp2p to 2.4.0 — announced-address resolution moves into libp2p’s AddressManager
  • make sure partitions are created — a fresh database started near the hour got no partition for the next hour
  • CI speed-up: run only relevant jobs behind a single ci-required gate, build the Windows exe and dll in parallel