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[ID-1663] Use numeric upstream EVM WebSocket request IDs - #12
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Included review availability: This review used your included allowance. 4 included reviews remain after this review. Your included PR review attempts over the past 7 days set your current allowance at 5 reviews per hour. 📝 WalkthroughWalkthroughThe Ethereum adapter assigns internal numeric IDs to RPC requests and restores client IDs on responses. It tracks subscription and replay correlations and rejects batches containing subscription methods. Tests cover these behaviors and synchronize broadcast fan-out replies. ChangesEthereum RPC adapter behavior
Broadcast fan-out reply hooks
Priority: ⬇️ Low Estimated code review effort: 3 (Moderate) | ~30 minutes Change: Bug fix Sequence Diagram(s)sequenceDiagram
participant Client
participant ethAdapter
participant UpstreamRPC
Client->>ethAdapter: RPC request with client ID
ethAdapter->>UpstreamRPC: Request with internal numeric ID
UpstreamRPC->>ethAdapter: Response with internal numeric ID
ethAdapter->>Client: Response with restored client ID
Merge Risk: ⚪ Minimal · up to The reviewed request-ID and batch-handling changes have no identified issue blocking merge; normal validation remains appropriate. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
Full details: Docstring CoverageExplanation Docstring coverage is 11.76% which is insufficient. The required threshold is 80.00%. Docstring coverage is scoped to functions touched by this diff. Analyzed 17 functions across 5 files. (1 skipped: 1 unsupported.)
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Inline comments:
Review comments at @internal/subscription/session.go:
- Line 151: Update HandleClientFrame to detect eth_subscribe members within
batched requests and either track their subscription IDs while preserving the
batch response shape, or reject such batches before forwarding; do not let
rewriteRPCIDs treat subscription members as ordinary RPCs.
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internal/subscription/eth_ids_test.gointernal/subscription/session.gotest/integration/smoke_test.go
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Injective's EVM WebSocket server rejects string request IDs, so Stitch's generated
stitch_NIDs preventeth_subscribefrom working. This change sends unique numeric upstream IDs for subscriptions, replay, unsubscribe, and ordinary requests, then restores the caller's original raw ID on each response.Ordinary requests and subscriptions share the upstream sequence to prevent collisions. String IDs, explicit null IDs, and numeric IDs above 2^53 retain their exact type and value, including in ordinary RPC batches. Internal unsubscribe acknowledgements are consumed after the local reply, and abandoned ordinary-call mappings are cleared when reconnecting.
Batches containing
eth_subscribeoreth_unsubscribeare rejected in full before forwarding or changing subscription state. This prevents untracked subscriptions and bypassed unsubscribe mappings. Valid requests receive a batch error with their original IDs; notifications receive no response, and invalid members receive invalid-request errors. Individual subscriptions and ordinary RPC batches remain supported. The README documents this boundary.The integration broadcast fixture now waits until both requests arrive before replying. Its previous assertion reproduced failures on unchanged
master, where the first successful response can cancel the other leg. Production broadcast behavior is unchanged.Validation: full Go suite,
go vet ./..., subscription/EVM WebSocket/integration race tests, and regression tests for correlation, replay, ordinary batches, subscription-batch rejection, notifications, malformed members, and exact IDs. The batch-subscription regression tests reproduced the bug before the fix. CI passed on a315ff7, including both Go toolchains, lint, race, and example configuration validation.Merged as
9a5521c116d0e3411744d3d88657f6b177e9f8a4and published asv0.1.8by the successful release build. All five registered Stitch deployments now run the digest-pinned release, with 13 Ready Pods and zero restarts. Both private OVH testnet Pods passed the EVM WebSocket regression checks. All 13 Pods passed health, RPC and CometBFT WebSocket checks; additional enabled REST, gRPC, gRPC-Web/CORS and ChainStream checks passed across the five deployments.ID-1663