2026-05-11 Messaging Weekly

Logos Delivery

Reliable Channel API — Developer Preview

• [Deliverable] Implement Reliable Channel API
  • achieved:
    • Define persistence interface for SDS state
    • fix: require participantId on newReliabilityManager
    • Include nim-sds as a dependency in logos-delivery
  • next:
    • Implement persistence service in a separate thread
      • Enhance package description for brokers.nimble
      • Add package brokers

Support QUIC Transport in Logos Delivery

• [Deliverable] Trial QUIC
  • next:
    • feat: Implement QUIC support in logos-delivery (not blocked)
    • QA-reproducible QUIC-in-Logos-Delivery used in Logos Delivery Simulator to validate QUIC support (blocked — see below)
  • blockers:
    • The following issue has been solved but we need a future nim-libp2p version with the fix: nim-lsquic benchmark

Logos Chat

Chat — Group Conversations

• Implement contact discovery
  • achieved:
  • Spike: LEZ as an account registry for discovery: https://github.com/logos-messaging/lez-contacts/pull/1#event-25362785806

Maintenance

• achieved:
  • adjust event defs to messaging-api implementation in logos-delivery
  • rx_service: ensure fetch msgs query is performed when missing msg
  • Evict peer instead of abrupt disconnect and avoid sending unnecessary store requests
  • Deploy release v0.38.1 in waku.sandbox
  • Service ports default to 0 (auto-assign)
• next:
  • Use fixed array of ctx to avoid consuming all fds
  • Simplified FFI authoring with auto-generated C++ and Rust bindings
  • Improve config
  • Lift Messaging API out of Waku into its own layer