Network Update for sprints 103-106.

Author: coot

blog/2026-02-10-network.md

@@ -0,0 +1,94 @@
+---
+title: Network Team Update
+slug: 2026-02-10-network
+authors: [coot]
+tags: [network]
+hide_table_of_contents: false
+---
+
+## Overview of sprints: [103][sp-103], [104][sp-104], [105][sp-105], [106][sp-106].
+
+The most important changes are patches developed after the November fork
+incident on Mainnet, which make the diffusion layer more robust.  These patches
+are released in the [`cardano-node-10.5.4` release][cardano-node-10.5.4].  __We
+highly recommend updating to `10.5.4`__ as these change make the Cardano
+Network more robust.  We'd like to thank [Karl Knutsson][karknu] ([CF]) who
+developed these patches.
+
+<small>
+This report only contains issues/PRs finished/merged in the sprints 103 through
+106.  Work that has been carried and finished in the current sprint will be
+reported in the future.
+</small>
+
+### Ouroboros-Network
+
+#### Diffusion
+
+* [__Optimised connectivity to peers behind firewall__][on-4381]
+* [__ChainSync timeouts__][on-5250]:
+  - no chain-sync `StNext StMustReply` timeout for trustable local root peers
+* [__More robust diffusion__][on-5253] A series of patches after the November incident:
+  - enforce max reconnection attempts,
+  - use shorter timeout when waiting on `chain-sync` to exit,
+  - block-fetch: exclude peers that are shutting down in active peers calculation,
+  - chain-sync: bumped `StNext StMustReply` timeout from a range of `135-269s` to `601-911s`.
+* [__WASM support__][on-5229]
+
+#### Cardano-Ping
+
+* [__Unknown version received in cardano-cli ping__][on-5281]
+
+#### Leios
+
+* [__Network mux demo for analysing Leios/Praos traffic__][on-5261]
+* [__mux leios simulation__][on-5293]
+
+#### Technical Debt
+
+* [__Small changes__][on-5268]
+* [__fixed nightly build__][on-5285]
+* [__Removed duplicate trace events__][on-5287]
+* [__Fixed a typo__][on-5294]
+
+### Cardano-Node
+
+* [__networking adjustments for the new tracing system__][cn-6388]
+
+
+### DMQ-Node
+
+* [__Signature verification__][on-5175]
+* [__Moved dmq-node to its own repo__][on-5266]
+* [__Enhance validation logic__][dmq-1]
+* [__Mempool fixes__][dmq-19]: various bug fixes and code refactorings for the `dmq-node`.
+* [__PeerSelectionPoolicy for dmq-node__][dmq-27]
+
+
+[CF]: https://cardanofoundation.org/
+[karknu]: https://github.com/karknu
+[cn-6388]: https://github.com/IntersectMBO/cardano-node/6388
+[dmq-1]: https://github.com/IntersectMBO/dmq-node/1
+[dmq-19]: https://github.com/IntersectMBO/dmq-node/19
+[dmq-27]: https://github.com/IntersectMBO/dmq-node/27
+[on-4381]: https://github.com/IntersectMBO/ouroboros-network/issues/4381
+[on-5175]: https://github.com/IntersectMBO/ouroboros-network/issues/5175
+[on-5229]: https://github.com/IntersectMBO/ouroboros-network/issues/5229
+[on-5250]: https://github.com/IntersectMBO/ouroboros-network/issues/5250
+[on-5253]: https://github.com/IntersectMBO/ouroboros-network/issues/5253
+[on-5261]: https://github.com/IntersectMBO/ouroboros-network/issues/5261
+[on-5266]: https://github.com/IntersectMBO/ouroboros-network/issues/5266
+[on-5268]: https://github.com/IntersectMBO/ouroboros-network/issues/5268
+[on-5281]: https://github.com/IntersectMBO/ouroboros-network/issues/5281
+[on-5285]: https://github.com/IntersectMBO/ouroboros-network/issues/5285
+[on-5287]: https://github.com/IntersectMBO/ouroboros-network/issues/5287
+[on-5290]: https://github.com/IntersectMBO/ouroboros-network/issues/5290
+[on-5293]: https://github.com/IntersectMBO/ouroboros-network/issues/5293
+[on-5294]: https://github.com/IntersectMBO/ouroboros-network/issues/5294
+
+[sp-103]: https://github.com/orgs/IntersectMBO/projects/5/views/1?filterQuery=sprint%3A%22Sprint+103%22
+[sp-104]: https://github.com/orgs/IntersectMBO/projects/5/views/1?filterQuery=sprint%3A%22Sprint+104%22
+[sp-105]: https://github.com/orgs/IntersectMBO/projects/5/views/1?filterQuery=sprint%3A%22Sprint+105%22
+[sp-106]: https://github.com/orgs/IntersectMBO/projects/5/views/1?filterQuery=sprint%3A%22Sprint+106%22
+
+[cardano-node-10.5.4]: https://github.com/IntersectMBO/cardano-node/releases/tag/10.5.4