Title: Portal_Implementers_Call__50___April_7th
Category: Protocol_Calls___happenings

Author: system
Date: 2025-04-02T16:57:09.183Z

Meeting Info

Apr 7, 16:30 UTC
Duration: 30 minutes
Meet link: shared in EthR&D#portal-dev
Recap: Portal Network Implementers Call Notes - HackMD (updated after each call)

Agenda

Team updates

GitHub Issue

Author: Chloe
Date: 2025-04-08T09:00:41.917Z

This week’s call notes:
1. Team update


Update by Piper

Working on history expiry coordination & organization
In early onboarding phase for history state spec



Update on Trin & Glados by Kolby

e2hs update

Fixed an invalid BlockIndex type in e2hs
Pre-merge e2hs files generated & uploaded, except some minor bugs
Once fixed, e2hs file will replace era1, with plan to sync up to the chain head minus ~27h


Fixed a bug where the discv5 ENR cache was to small to handle 500+ or more active peers by scaling the cache size to match the max number of sessions

A cleaner upstream fix coming soon via the discv5 lib


Glados

Updated Glados to support ethportal-api 0.6.0 which incl. ping extension
Fixing the census issue, which now works even without online nodes





Update on Fluffy by Kim

Updated ping endpoint to support ping extension
Worked on async EVM improvement and investigating segfault/ bugs in CI tests
Protocol versioning

Progressing on protocol versioning, but blocked by an unexpected compiler bug
Need to update discv5 for protocol versioning to properly handle ENR access during request/ response

Plan to store ENR in session cache for reliable access




Implemented the changes of accept codes and add varient size prefix

Investigating a clean solution to manage versioning info along with the encoding/ decoding process





Update on Ultralight by ScottyPoi

Working on protocol versioning, added initial support but v1 features not yet active

Current priority: Finish the v1 changes implementation


Progressed on history expiry support within EthereumJS team
Plan to revamp boot node setup, shifting from 2 overloaded VMs to multiple smaller VMs, for better performance and reliability
Merged a Tauri-based web interface project built on Ultralight by Justin, currently allowing basic RPC lookups



Update on Samba by Meld

Implemented SSZ union removal
Fixed a bug in the putContent JSON-RPC endpoint, which is related to the utp lib usage
Passed local Hive tests against Trin, still debugging remaining test failures
Plan to begin regular biweekly sync with Besu team for planning and coordination



Update on Shisui by Grapebaba

Merged PRs, incl. implementation on accept codes and protocol versioning
Implemented add size prefix in FindContent
Fixed the FindNodes response bug, due to packet too long
Added rate limiting policy, where gossips are dropped when resource usage exceeds the limit
Fixed discv5 whoareyou response issue in Geth, through in Hive tests still see issues when communicating with Fluffy nodes

The issue with Fluffy nodes

When two portal requests are sent simultaneously before a session is established, only the 1st succeeds and the 2nd fails
eg. Fluffy’s background Ping (for node revalidation) races with test-triggered FindContent, would cause one to fail


Potential solution

Queuing on Fluffy side: Queue the concurrent requests until the session is setup
Retry logic: Clients could retry dropped requests automatically
Test adjustment: Modify Hive test to better reflect real-world behavior


Ultralight related notes

Identified 3+ encoding-related bugs when previously debugging Hive test failures related to discv5
Not sure if these fixes would resolve the concurrent-request problem







2. Discussion topics
2.1 Next step for Bridges

Curent status

Bridges are mainly run by the Trin team currently


Technical updates

Transition to generate e2hs file (much simplified without the accumulator) to replace era1 file for the entire range
Plan to maintain two bridge types: ephemeral bridge (handle reorgs & complex edge cases) and e2hs bridge
Dropping support for the older era1 bridge


Next step proposal

Community-runned bridges

Consensus: Shift from team-operated to community-operated bridges
Next steps: Document clear setup steps for external parties to get involved easily





2.2 Hive test

Achieved improved test coverage this week, with additional Portal Hive test now passing successfully
Strong cross-team collaboration as client teams worked together on troubleshooting and debugging

2.3 Team presence at Interop event

Some members from Portal team will attend the event in Berlin in June