Steps 1 & 2: Probe signal quality + majorityBaseline protection#2297
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This was referenced May 25, 2026
Step 1 — Probe Signal Quality: - Add latest_block_fetch_latency_ms and latest_block_change_age_ms fields to ProbeReply. Provider populates them from chainTracker.GetLatestFetchLatency() and time-since-last-block-change. - Consumer uses them for probe staleness rejection (ProbeStalenessMultiplier × averageBlockTime) and combined-latency endpoint sorting. - Add GetAverageBlockTime() helper on ProviderOptimizer. Step 2 — majorityBaseline Protection: - New chainstate package: ChainState struct with majorityBaseline/outlierThreshold + IsOutlier guard, ComputeMajorityBaseline consensus algorithm. - probeProviders restructured into Phase 1 (concurrent probes) -> Phase 2a (per-provider scoring) -> Phase 2b (consensus + outlier blocking). - Writes to seenBlock and latestSyncData.Block now guarded by IsOutlier. - Outlier providers blocked from routing via blockOutlierProviders. See protocol/rpcconsumer/docs/probing/improvements-proposals/roadmap.md for the broader four-step plan.
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Summary
Implements roadmap steps 1 and 2 for the consumer's probing mechanism and block-height safety.
latest_block_fetch_latency_msandlatest_block_change_age_msinProbeReply. Consumer uses them for staleness rejection (ProbeStalenessMultiplier × averageBlockTime) and combined-latency endpoint sorting.chainstatepackage + probe-driven consensus loop inconsumer_session_manager.goPhase 2b. Writes toseenBlockandlatestSyncData.Blockare gated byIsOutlier(majorityBaseline + threshold). Outlier providers are blocked from routing.Docs
protocol/rpcconsumer/docs/probing/improvements-proposals/roadmap.mdprotocol/rpcconsumer/docs/consumer-latestblock-managment/majorityBaseline-protection-mechanism.mdprotocol/rpcconsumer/docs/probing/improvements-proposals/fixes-progress.md(Steps 1–2)Test plan
Stacked PR
Base of a 3-PR stack. PR #2 (Step 3) and PR #3 (Step 4) target this branch.
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