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feat(config): RPC bootstrap hardening, socket alignment, and exhaustive tests#1313

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senamakel merged 4 commits intotinyhumansai:mainfrom
M3gA-Mind:feat/933-rpc-bootstrap
May 6, 2026
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feat(config): RPC bootstrap hardening, socket alignment, and exhaustive tests#1313
senamakel merged 4 commits intotinyhumansai:mainfrom
M3gA-Mind:feat/933-rpc-bootstrap

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@M3gA-Mind M3gA-Mind commented May 6, 2026

Summary

  • Fixes a latent bug where socketService ignored the user's stored RPC URL — Socket.IO was always connecting to the static default instead of the user-configured endpoint
  • Adds clearBackendUrlCache() so changing the RPC URL also invalidates the derived backend URL
  • 133 new tests covering the full RPC URL configuration, persistence, propagation, and socket alignment surface

What changed

Bug fix — app/src/services/socketService.ts
resolveCoreSocketBaseUrl() now calls getCoreRpcUrl() (which respects the stored preference) instead of calling invoke('core_rpc_url') directly. Previously, customising the RPC URL on the login screen had no effect on the socket connection.

app/src/services/backendUrl.ts
Exported clearBackendUrlCache() — parallel to clearCoreRpcUrlCache(). Changing the RPC URL now cascades to the backend URL cache.

app/src/pages/Welcome.tsx
Calls clearBackendUrlCache() on save and reset alongside the existing clearCoreRpcUrlCache() call.

app/src/utils/config.ts
JSDoc added to CORE_RPC_URL and BACKEND_URL explaining they are build-time fallbacks, not runtime-authoritative values, with a pointer to the runtime resolution chain.

app/src/utils/configPersistence.ts
Removed dead buildRpcEndpoint() export (zero call sites).

Tests (133 new, all passing)

File New tests What they cover
Welcome.test.tsx +30 Panel toggle, save/validate/test/reset flows, cache-clear calls, Test Connection loading/success/network-error states, URL validation display
coreRpcClient.test.ts +7 getCoreRpcUrl() stored-URL preference, caching, post-clear refresh, Tauri invoke fallback, stored URL takes priority over invoke
backendUrl.test.ts +5 clearBackendUrlCache() forces re-derive, cache hit, RPC error fallback, non-Tauri path
socketService.test.ts new (4) getCoreRpcUrl called on connect, /rpc suffix stripped, no-suffix handled, custom stored URL propagated
configPersistence.test.ts +24 isValidRpcUrl edge cases, normalizeRpcUrl edge cases, round-trip storage, localStorage-unavailable fallback

Test plan

  • NODE_ENV=test pnpm --filter openhuman-app compile passes
  • NODE_ENV=test pnpm --filter openhuman-app format:check passes
  • NODE_ENV=test pnpm --filter openhuman-app lint passes (0 errors)
  • pnpm test:coverage — 133 new tests, all pass
  • pnpm build passes
  • bash scripts/install.sh --dry-run --verbose passes

Closes #933

Summary by CodeRabbit

  • Bug Fixes

    • RPC and backend URL caching improved so changes (save, test, reset) apply immediately in the app.
    • Socket connection resolution updated for more reliable connections with custom RPC URLs.
  • Tests

    • Expanded test coverage for RPC/backend URL handling, persistence, and socket connection scenarios.

M3gA-Mind added 2 commits May 7, 2026 02:02
…ts (tinyhumansai#933)

Resolves the remaining gaps from issue tinyhumansai#933:

Bug fix:
- socketService: resolveCoreSocketBaseUrl() now calls getCoreRpcUrl()
  instead of duplicating resolution via invoke('core_rpc_url') — socket
  now connects to the user's stored RPC URL, not always the static default

P2 polish:
- backendUrl: export clearBackendUrlCache() so RPC URL changes cascade
  to the backend URL cache; Welcome calls it on save + reset
- config: add JSDoc to CORE_RPC_URL and BACKEND_URL marking them as
  build-time fallbacks with runtime resolution chain documented inline
- configPersistence: remove dead buildRpcEndpoint() export (zero call sites)

Tests (133 new, all passing):
- Welcome.test.tsx (+30): panel toggle, save/test/reset flows, validation
  errors, cache-clear calls, Test Connection loading/success/error states
- coreRpcClient.test.ts (+7): getCoreRpcUrl stored-URL preference, caching,
  post-clear refresh, Tauri invoke fallback, stored priority over invoke
- backendUrl.test.ts (+5): clearBackendUrlCache forces re-derive, cache
  hit, RPC error fallback, non-Tauri path
- socketService.test.ts (new, 4): getCoreRpcUrl called on connect, /rpc
  stripped, no-suffix handled, custom stored URL propagated end-to-end
- configPersistence.test.ts (+24): isValidRpcUrl edge cases, normalizeRpcUrl
  edge cases, round-trip with various URL types, localStorage-unavailable
  fallback

Closes tinyhumansai#933
@M3gA-Mind M3gA-Mind requested a review from a team May 6, 2026 20:36
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coderabbitai Bot commented May 6, 2026

📝 Walkthrough

Walkthrough

Centralizes runtime core RPC URL resolution with caching and invalidation, adds clearBackendUrlCache(), integrates cache clears into Welcome UI flows, refactors socketService to use getCoreRpcUrl(), removes build-time RPC endpoint helper, and adds extensive tests for URL handling and persistence.

Changes

Runtime RPC URL resolution, cache invalidation, and UI integration

Layer / File(s) Summary
Data / Public API
app/src/services/coreRpcClient.ts
Adds getCoreRpcUrl() and clearCoreRpcUrlCache() to provide a centralized, cached runtime RPC URL resolver (web + Tauri-aware).
Cache & Synchronization
app/src/services/backendUrl.ts
Adds clearBackendUrlCache() and a generation counter to invalidate cached backend URL and guard in-flight resolutions.
Core usage / Wiring
app/src/services/socketService.ts
Replaces prior Tauri/CORE_RPC_URL logic with getCoreRpcUrl(); resolveCoreSocketBaseUrl() now derives Socket.IO base from the resolved RPC URL via coreSocketBaseFromRpcUrl.
UI integration
app/src/pages/Welcome.tsx
Calls clearBackendUrlCache() after saving, resetting, or successfully testing the RPC URL to invalidate dependent caches.
Utility cleanup
app/src/utils/configPersistence.ts
Removes exported buildRpcEndpoint() (endpoint composition moved to centralized resolver).
Docs / Build-time notes
app/src/utils/config.ts
Adds build-time documentation blocks clarifying CORE_RPC_URL and BACKEND_URL as non-runtime fallbacks and pointing to runtime resolution via getCoreRpcUrl.
Tests / Coverage
app/src/services/__tests__/coreRpcClient.test.ts, app/src/services/__tests__/backendUrl.test.ts, app/src/services/__tests__/socketService.test.ts, app/src/pages/__tests__/Welcome.test.tsx, app/src/utils/__tests__/configPersistence.test.ts
Adds and extends tests for get/clear core RPC URL caching, backend URL cache behavior, socket base derivation, Welcome UI flows (Save/Test/Reset) and validation, and config persistence edge cases.

Sequence Diagram

Estimated code review effort

🎯 4 (Complex) | ⏱️ ~50 minutes

Possibly related PRs

Suggested reviewers

  • senamakel

"I'm a rabbit with a tiny spade,
I clear the cache where URLs are laid.
Saved, tested, reset — the flow's anew,
Core RPC found, the sockets too.
Hooray for runtime paths pursued!" 🐇✨

🚥 Pre-merge checks | ✅ 4 | ❌ 1

❌ Failed checks (1 warning)

Check name Status Explanation Resolution
Docstring Coverage ⚠️ Warning Docstring coverage is 22.22% which is insufficient. The required threshold is 80.00%. Write docstrings for the functions missing them to satisfy the coverage threshold.
✅ Passed checks (4 passed)
Check name Status Explanation
Description Check ✅ Passed Check skipped - CodeRabbit’s high-level summary is enabled.
Title check ✅ Passed The title accurately summarizes the main changes: RPC bootstrap hardening (clearBackendUrlCache, generation counter), socket alignment (socketService using getCoreRpcUrl), and comprehensive test coverage (133 new tests).
Linked Issues check ✅ Passed All coding objectives from #933 are met: login-screen RPC URL control in Welcome.tsx with validation, persistence via configPersistence, backend settings resolution via getCoreRpcUrl, error handling, documentation added to config.ts, and 133 comprehensive unit tests covering RPC/backend configuration, socket alignment, and cache behavior.
Out of Scope Changes check ✅ Passed All changes are directly scoped to #933: RPC URL handling in Welcome.tsx, cache invalidation in backendUrl.ts, socket service alignment, config documentation, tests, and removal of unused buildRpcEndpoint export. No unrelated refactoring or feature creep detected.

✏️ Tip: You can configure your own custom pre-merge checks in the settings.


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Actionable comments posted: 7

🤖 Prompt for all review comments with AI agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Inline comments:
In `@app/src/pages/Welcome.tsx`:
- Around line 41-43: The success branch of handleTestConnection() currently
calls storeRpcUrl(normalized) and clearCoreRpcUrlCache() but misses clearing the
backend URL cache; update that success path to also call clearBackendUrlCache()
so the backend derived from the new RPC URL is invalidated immediately (mirror
the calls used in the Save/Reset flow: storeRpcUrl(normalized),
clearCoreRpcUrlCache(), clearBackendUrlCache()).

In `@app/src/services/__tests__/backendUrl.test.ts`:
- Around line 119-126: Rename the test whose description is currently "graceful
fallback to VITE_BACKEND_URL when core RPC throws" to reflect that it expects
rejection; update the test title string (in the test() call around the
getBackendUrl() assertion) to something like "propagates error when core RPC
throws" or "throws when core RPC throws" so the name matches the assertion that
getBackendUrl() rejects with 'RPC unavailable'.
- Around line 106-117: The test's non-Tauri branch should assert the exact
configured fallback value instead of just "non-empty": update the assertions in
the test that calls getBackendUrl (after loadFreshModule with
hoisted.isTauriMock.mockReturnValue(false)) to check that url equals the
module's configured fallback constant or env-derived value (e.g., the exported
fallback constant or process.env.BACKEND_URL used by the module) and still
assert hoisted.callCoreRpcMock was not called; locate
getBackendUrl/loadFreshModule in this test and replace the generic typeof/length
checks with a strict equality against that configured fallback.

In `@app/src/services/__tests__/socketService.test.ts`:
- Around line 68-69: Replace the brittle setTimeout(0) sleeps after
connectAsync() with assertion-based waits that poll for the observable
side-effect (e.g., waiting until getCoreRpcUrlMock has been called or ioMock
call count increments) instead of sleeping; in tests referencing connectAsync,
stop using "await new Promise(resolve => setTimeout(resolve, 0))" and instead
await a small helper or Jest/testing-library waitFor that resolves when
getCoreRpcUrlMock.mock.calls.length > 0 or ioMock.mock.calls.length increases
(apply same change to the other occurrences around lines 84-85, 108-109,
131-132), so the test deterministically waits for the actual effect rather than
relying on timing.

In `@app/src/services/backendUrl.ts`:
- Around line 15-17: clearBackendUrlCache currently nulled resolvingBackendUrl
but in-flight getBackendUrl() promises can still resolve and repopulate
resolvedBackendUrl; fix by introducing a generation/token (e.g.,
backendUrlVersion or resolveToken) that you increment or replace in
clearBackendUrlCache(), capture that token at the start of getBackendUrl(), and
only assign to resolvingBackendUrl and resolvedBackendUrl if the captured token
still matches the current global token—use the unique symbols
clearBackendUrlCache, getBackendUrl, resolvedBackendUrl, and resolvingBackendUrl
to locate where to add the token check and increment.

In `@app/src/utils/__tests__/configPersistence.test.ts`:
- Around line 257-264: The test temporarily replaces localStorage.getItem and
must restore it even if the test throws; change the inline spy usage to capture
the spy (or use vi.spyOn and assign to a variable) and call spy.mockRestore()
inside a finally block (or move restoration to an afterEach) so the global
localStorage.getItem is always restored after the test that calls
getStoredRpcUrl(); reference the mocked localStorage.getItem and the
getStoredRpcUrl test case to locate where to add the try/finally and mockRestore
call.

In `@app/src/utils/config.ts`:
- Around line 87-90: The JSDoc for BACKEND_URL incorrectly claims it's consulted
as a runtime fallback in Tauri; update either the doc or the runtime to match
behavior: either (A) tighten the JSDoc on BACKEND_URL in config.ts to state it
is only used in web mode or as an emergency fallback when the RPC is not
available (and explicitly note that getBackendUrl() in services/backendUrl.ts
will throw if openhuman.config_resolve_api_url fails in Tauri), or (B) implement
the fallback by modifying getBackendUrl() to return BACKEND_URL when
openhuman.config_resolve_api_url returns empty or errors (ensure you reference
the BACKEND_URL constant and handle errors from openhuman.config_resolve_api_url
consistently). Choose one approach and apply it so docs and runtime behavior
align.
🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

  • Push a commit to this branch (recommended)
  • Create a new PR with the fixes

ℹ️ Review info
⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 6bb2810b-77ac-4190-b6b1-47fb6f5821af

📥 Commits

Reviewing files that changed from the base of the PR and between f449a30 and a7226b9.

📒 Files selected for processing (10)
  • app/src/pages/Welcome.tsx
  • app/src/pages/__tests__/Welcome.test.tsx
  • app/src/services/__tests__/backendUrl.test.ts
  • app/src/services/__tests__/coreRpcClient.test.ts
  • app/src/services/__tests__/socketService.test.ts
  • app/src/services/backendUrl.ts
  • app/src/services/socketService.ts
  • app/src/utils/__tests__/configPersistence.test.ts
  • app/src/utils/config.ts
  • app/src/utils/configPersistence.ts
💤 Files with no reviewable changes (1)
  • app/src/utils/configPersistence.ts

Comment thread app/src/pages/Welcome.tsx
Comment thread app/src/services/__tests__/backendUrl.test.ts
Comment thread app/src/services/__tests__/backendUrl.test.ts Outdated
Comment thread app/src/services/__tests__/socketService.test.ts Outdated
Comment thread app/src/services/backendUrl.ts
Comment thread app/src/utils/__tests__/configPersistence.test.ts Outdated
Comment thread app/src/utils/config.ts Outdated
…i#1313

Production changes:
- Welcome.tsx: clear backend URL cache on handleTestConnection() success
  (mirrors Save/Reset paths — addresses @coderabbitai on Welcome.tsx:73-76)
- backendUrl.ts: add generation counter so in-flight getBackendUrl()
  resolutions cannot repopulate the cache after clearBackendUrlCache()
  (addresses @coderabbitai on backendUrl.ts:15-17)
- config.ts: tighten BACKEND_URL JSDoc — clarifies getBackendUrl() throws
  in Tauri mode rather than falling back to this constant
  (addresses @coderabbitai on config.ts:87-90)

Test changes:
- socketService.test.ts: fix SocketIOMCPTransportImpl mock to use a class
  (vi.fn() alone is not newable in vitest — caused 4 unhandled rejections
  that made CI report failure). Replace setTimeout(0) sleeps with
  pollUntil() helper for deterministic async waits.
- backendUrl.test.ts: assert BACKEND_URL constant in non-Tauri test (not
  just "non-empty string"); rename misleading "graceful fallback" test to
  "propagates RPC errors in Tauri mode (no silent fallback)"
  (addresses @coderabbitai on backendUrl.test.ts:106-126)
- configPersistence.test.ts: use try/finally + mockRestore() for the
  localStorage.getItem spy so global state is always restored
  (addresses @coderabbitai on configPersistence.test.ts:257-264)
- Welcome.test.tsx: update Test Connection success assertion to also
  verify clearBackendUrlCache() is called
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🧹 Nitpick comments (1)
app/src/services/__tests__/socketService.test.ts (1)

105-112: 💤 Low value

Conditional assertion may silently pass without verifying the expected behavior.

The if (ioMock.mock.calls.length > 0) pattern means the test passes without verifying the socket URL if the 1420 guard prevents connection. Consider making this explicit with a comment or failing if neither branch provides meaningful verification.

     if (ioMock.mock.calls.length > 0) {
       const connectedUrl = ioMock.mock.calls[ioMock.mock.calls.length - 1][0];
       expect(connectedUrl).toBe('http://127.0.0.1:7788');
     } else {
-      // The 1420 guard may have prevented connection — ensure getCoreRpcUrl was still consulted
+      // The 1420 guard prevented connection — at minimum verify getCoreRpcUrl was consulted.
+      // If this branch fires consistently, consider adjusting mocks to allow connection.
       expect(hoisted.getCoreRpcUrlMock).toHaveBeenCalled();
     }
🤖 Prompt for AI Agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

In `@app/src/services/__tests__/socketService.test.ts` around lines 105 - 112, The
test uses a conditional that can let it pass without verifying behavior; update
the assertion in socketService.test.ts so it explicitly fails if neither branch
verifies the expected behavior: ensure that either ioMock was called with the
expected URL ('http://127.0.0.1:7788') by asserting on ioMock.mock.calls
(reference ioMock and its mock.calls) OR, if the 1420 guard prevents connection,
explicitly assert that hoisted.getCoreRpcUrlMock was called (reference
hoisted.getCoreRpcUrlMock); make the test fail when both checks are false so the
behavior is always validated.
🤖 Prompt for all review comments with AI agents
Verify each finding against current code. Fix only still-valid issues, skip the
rest with a brief reason, keep changes minimal, and validate.

Nitpick comments:
In `@app/src/services/__tests__/socketService.test.ts`:
- Around line 105-112: The test uses a conditional that can let it pass without
verifying behavior; update the assertion in socketService.test.ts so it
explicitly fails if neither branch verifies the expected behavior: ensure that
either ioMock was called with the expected URL ('http://127.0.0.1:7788') by
asserting on ioMock.mock.calls (reference ioMock and its mock.calls) OR, if the
1420 guard prevents connection, explicitly assert that hoisted.getCoreRpcUrlMock
was called (reference hoisted.getCoreRpcUrlMock); make the test fail when both
checks are false so the behavior is always validated.

ℹ️ Review info
⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 375722e5-e94e-415d-ad60-7e2ced8973f4

📥 Commits

Reviewing files that changed from the base of the PR and between a7226b9 and 6462495.

📒 Files selected for processing (7)
  • app/src/pages/Welcome.tsx
  • app/src/pages/__tests__/Welcome.test.tsx
  • app/src/services/__tests__/backendUrl.test.ts
  • app/src/services/__tests__/socketService.test.ts
  • app/src/services/backendUrl.ts
  • app/src/utils/__tests__/configPersistence.test.ts
  • app/src/utils/config.ts

@senamakel senamakel merged commit 4e9f2a8 into tinyhumansai:main May 6, 2026
17 checks passed
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Tauri bootstrap from config.toml and derive API/backend settings from core

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