2026-08-03 Messaging Weekly

Highlights

• Logos Delivery:
  • QUIC transport passed DST scale validation
  • RLN-sourced rate limiting and proof generation now enforced in the send service
• Logos Integrations:
  • logos-delivery-module v0.2.0 released with Reliable Channels and Store query support
  • logos-chat-module v0.2.1 released — multiple bugfixes and improvements
  • logos-chat-ui v0.2.1 released - rebuilt on cards and avatars
• Status:
  • SDS reliability live in Status Communities — message wrapping enabled, missed messages recovered via SDS, “delivered” status driven by SDS acknowledgements

Logos Delivery

Messaging API — General Availability

• [Deliverable] Reliability and scale validation with DST

  • next:
    • feat(compose): add logosdeliverynode docker-compose stack

• [Deliverable] Test suite for Messaging API

  • achieved:
    • Fix CI issue [reports / flaky tests]
  • next:
    • test(e2e): port remaining wrapper tests from the interop repo

• [Deliverable] Create Rate Limit Manager

  • achieved:
    • feat: enforce the per-epoch rate limit at the send service (RLN-sourced)
    • feat: attach and refresh RLN proofs in the send service (Stream B)
    • Rate-limit epoch period and send-service cache TTL are inconsistent
  • next:
    • Implement a configurable approached state for rate-limit-manager
    • Do not schedule ephemeral messages if rate limit is approached
    • Add cap for parked tasks in send scheduler

• [Deliverable] Integrate Rate Limit Manager

  • next:
    • Rate-limit-manager must use remaining budget provided by RLN API module to drive send scheduling

Reliable Channel API — Beta

• Reliable Channel API stabilization and bug fixes
  • achieved:
    • fix: stop emitting receive events after channel_close
    • fix: subscribe to the channel’s content topic on channel_create
    • fix: SIGSEGV during node shutdown after restoring persisted reliable-channel state
  • next:
    • bug: messaging api and reliable channel api share kernel state without ownership

Support QUIC Transport in Logos Delivery

• [Deliverable] Trial QUIC
  • achieved:
    • feat: DST scale validation of QUIC transport
    • fix: stop host OpenSSL from hijacking bundled BoringSSL in liblogosdelivery
    • fix(conf): default QUIC off on the messaging path
  • next:
    • chore: bump nim-lsquic v0.5.1 -> v0.5.6

RLN on Logos Blockchain

• [Deliverable] Implement pluggable RLN membership interface
  • achieved:
    • define rln interface API
  • next:
    • Rewire RLN implementation to use RLN API module

Fleet Stability

• [Deliverable] Fleet monitoring dashboards for Logos fleets

  • achieved:
    • chore(metrics): sync fleet dashboards from Grafana
    • Connect Prometheus and Grafana to logos.dev fleet status-im/infra-logos#27
    • Add logos.dev fleet delivery nodes to Kuma Canaries status-im/infra-logos#19
  • next:
    • Missing data in some grafana dashboards

• [Deliverable] Resolve known fleet stability issues

  • achieved:
    • nim-libp2p v2.2.0 migration and NAT overhaul: deps bump, adapt Logos Delivery, resolve dynamic ports in announced addresses, typed NAT policy boundary, adopt libp2p NATService, announce NAT-mapped external addresses, harden NAT mapping and discv5 projection
  • next:
    • chore: migrate to nim-libp2p v2.2.0
    • fix: partition messages_lookup so retention drops partitions instead of mass-deleting rows (fixes broken AMS logos.test store)

Logos Chat

Chat — Beta

• [Deliverable] Implement full identity model

  • achieved: Update the Keypackage Caching server to accept publications over λDelivery - https://github.com/logos-messaging/chat-store/pull/7

• [Deliverable] Stabilize and polish API

  • achieved:
    • (New Contributor) Fix build ChatCLI - https://github.com/logos-messaging/libchat/pull/197
    • Bug hunting - https://github.com/logos-messaging/libchat/issues/199

Logos Core

Logos Core Integration — Phase 2

• [Deliverable] Add Reliable Channel API to Logos Core Delivery module

  • achieved:
    • [delivery] logos-delivery-module v0.2.0 released with Reliable Channels API and Store queries
    • [delivery] feat(conf): add localStoragePath to MessagingClientConf
    • [delivery] docs: document the three createNode config shapes
    • [delivery] refactor!: drop the version() API method

• Logos Chat module and UI for Logos Core

  • achieved:
    • [chat] logos-chat-module v0.2.1 released — init reshaped around a ChatConfig record, instance storage under the host-assigned persistence path, delivery node picks its own port, conversation roster reports pending invites, log level/get_log_path/lock-free health()
    • [chat] logos-chat-module v0.2.2 and logos-chat-ui v0.2.2 released against delivery_module v0.2.0 (layered createNode config)
    • [chat] feat: rebuild the chat UI on cards, avatars and one action per surface
    • [chat] feat: hold the run’s failures and hand over the logs that explain them

Logos Core Integration — Phase 3

• [Deliverable] Make discovery pluggable in Logos Delivery
  • next:
    • Support discovery plugins in logos-delivery

Status

Introduce E2E Reliability in Status Communities

• [Deliverable] SDS protocol in Status — basic recovery

  • achieved:
    • Fetch missing envelopes when we get an SDS signal

• [Deliverable] SDS protocol in Status — enable wrapping for communities messages

  • achieved:
    • Enable SDS wrap process for sending community messages

Maintenance

• achieved:
  • chore(deps)!: bump nim-ffi to 0.3.0-rc.1 (per-listener event ABI)
  • feat(node-info): expose MaxMessageSize node info item
  • Add logging policy
• next:
  • feat(ffi)!: migrate liblogosdelivery to the nim-ffi 0.3.0 typed C ABI
  • chore: replace minprotobuf with nim-protobuf-serialization
  • ci: pull and publish the Logos Attic cache in nix builds