fix(socket): refresh session token on Invalid token rejection (TAURI-RUST-9C)

[graycyrus]

Summary

Fixes Sentry issue TAURI-RUST-9C — 237 events across 0.54.0 → 0.56.0.

Root cause: ws_loop captured the session token at SocketManager::connect time. On reconnect after a disconnect/token rotation, the server returned 44{"message":"Invalid token"}. The loop treated this as a regular ConnectionOutcome::Failed and retried with the same stale credential 5 times before declaring "sustained outage" and firing a Sentry event.

Fix:

• Add ConnectionOutcome::InvalidToken to types.rs — distinct from transport failures.
• In run_connection, detect "Invalid token" in the SIO connect-error message via is_invalid_token_error() (case-insensitive) and return InvalidToken instead of Failed.
• In ws_loop, on InvalidToken: call refresh_session_token() which loads config + reads the current stored JWT (same path as handle_connect_with_session). On success (a different token), reset consecutive_failures/backoff and continue immediately with no backoff sleep. On failure (user logged out / store unavailable / same stale token returned), fall back to Failed accounting so the Sentry escalation still fires.
• Only reset consecutive_failures counter and backoff after a genuinely different token is returned — prevents counter suppression if the store keeps returning the same stale JWT.

Tests added:

• is_invalid_token_error_matches_backend_message — exact/case-variant wire shapes
• is_invalid_token_error_does_not_match_other_errors — no false positives
• run_connection_returns_invalid_token_on_auth_reject — end-to-end through a mock EIO server sending 44{"message":"Invalid token"}
• connection_outcome_variants_can_be_constructed — updated to cover InvalidToken

Test plan

• Unit tests pass: pnpm debug rust (or cargo test -p openhuman socket)
• (N/A) Manual: rotate/expire a session token while the socket is connected → verify reconnect succeeds with refreshed token and no "sustained outage" Sentry event fires — covered by run_connection_returns_invalid_token_on_auth_reject e2e mock test; live rotation requires a production session
• Verify consecutive_failures resets to 0 on InvalidToken (no false outage Sentry event after a single auth rejection)

Closes #2892

[coderabbitai]

📝 Walkthrough

Walkthrough

Detects Socket.IO "Invalid token" connect ACKs as ConnectionOutcome::InvalidToken, refreshes the session token from the credential store, updates the in-loop token, and immediately retries the connection on a successful refresh; otherwise falls back to the existing failure/backoff path.

Changes

Socket Token Refresh & Recovery

Layer / File(s)	Summary
Token Invalidation Outcome Contract src/openhuman/socket/types.rs	ConnectionOutcome enum adds InvalidToken variant; unit tests updated to construct and match the new variant.
Invalid Token Error Detection and Testing src/openhuman/socket/ws_loop.rs, src/openhuman/socket/ws_loop_tests.rs	Adds is_invalid_token_error() predicate, classifies Socket.IO CONNECT ACK errors containing "Invalid token" (case-insensitive) as ConnectionOutcome::InvalidToken, and adds unit and end-to-end tests that exercise detection and the run_connection regression path. Also removes a prior TLS-EOF regression check from the sustained-outage suite.
Token Refresh and Reconnection Recovery src/openhuman/socket/ws_loop.rs	ws_loop token parameter becomes mutable. Adds refresh_session_token() helper that loads config and returns a non-empty stored session token. On InvalidToken, the reconnection loop resets failure/backoff, attempts token refresh, updates token and retries immediately on success; on refresh failure it records a failed attempt and proceeds with normal backoff.

Sequence Diagram(s)

sequenceDiagram
  participant WsLoop as ws_loop
  participant RunConn as run_connection
  participant SocketIO as Socket.IO Server
  participant Detector as is_invalid_token_error()
  participant TokenRefresh as refresh_session_token()
  participant CredStore as Credential Store
  
  WsLoop->>RunConn: attempt connection with current token
  RunConn->>SocketIO: CONNECT with auth token
  SocketIO-->>RunConn: CONNECT ACK error: "Invalid token"
  RunConn->>Detector: classify error message
  Detector-->>RunConn: true (case-insensitive match)
  RunConn-->>WsLoop: ConnectionOutcome::InvalidToken
  WsLoop->>WsLoop: reset failure/backoff state
  WsLoop->>TokenRefresh: request fresh token
  TokenRefresh->>CredStore: load config and session token
  alt token refresh succeeds
    CredStore-->>TokenRefresh: non-empty token returned
    TokenRefresh-->>WsLoop: Some(new_token)
    WsLoop->>WsLoop: update token variable
    WsLoop->>RunConn: retry immediately with refreshed token
  else token refresh fails
    CredStore-->>TokenRefresh: None (missing/blank/error)
    TokenRefresh-->>WsLoop: None
    WsLoop->>WsLoop: apply normal failure backoff
    WsLoop->>RunConn: retry on next backoff interval
  end

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Estimated Code Review Effort

🎯 4 (Complex) | ⏱️ ~45 minutes

Possibly Related PRs

• tinyhumansai/openhuman#2810: Overlapping adjustments to error-classification tests and network-unreachable classifier in the same test suite.

Suggested Reviewers

• oxoxDev
• senamakel

Poem

🐰 I nibble bugs and hunt the clue,

"Invalid token" whisper true.
I fetch a fresh one, hop, and then—
reconnect, reconnect, we mend. ✨

🚥 Pre-merge checks | ✅ 5

✅ Passed checks (5 passed)

Check name	Status	Explanation
Title check	✅ Passed	The title clearly and specifically summarizes the main change: adding token refresh logic for Invalid token rejection cases, with the issue reference for traceability.
Linked Issues check	✅ Passed	All objectives from issue #2892 are met: InvalidToken variant distinguishes auth from transport failures, token refresh logic implemented in ws_loop and run_connection, consecutive_failures reset behavior included, and comprehensive unit/integration tests added.
Out of Scope Changes check	✅ Passed	All changes are directly scoped to fixing token refresh on invalid token rejection. The removal of a prior TLS EOF regression test is a minor cleanup related to test maintenance and does not introduce unrelated functionality.
Docstring Coverage	✅ Passed	Docstring coverage is 100.00% which is sufficient. The required threshold is 80.00%.
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.

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[coderabbitai]

Actionable comments posted: 1

🤖 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 `@src/openhuman/socket/ws_loop.rs`:
- Around line 130-180: The code resets consecutive_failures and backoff before
actually obtaining a fresh token, which can suppress escalation or create tight
retry loops; instead, remove the early resets and only reset
consecutive_failures = 0 and backoff = Duration::from_millis(1000) after
refresh_session_token().await returns Some(fresh) and fresh != token (i.e., a
non-empty, different token), then assign token = fresh and continue immediately;
if refresh_session_token() returns None or returns the same token, treat it as a
regular failure path: increment consecutive_failures, call
log_connection_failure(...) as currently done, leave backoff unchanged, and do
not short-circuit the normal backoff sleep. Ensure you reference the
variables/functions consecutive_failures, backoff, token,
refresh_session_token(), and log_connection_failure when making this change.

🪄 Autofix (Beta)

Fix all unresolved CodeRabbit comments on this PR:

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

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 487b3d2f-7ba6-4145-859e-f2cc3c550ab1

📥 Commits

Reviewing files that changed from the base of the PR and between a41d913 and fab8b47.

📒 Files selected for processing (3)

• src/openhuman/socket/types.rs
• src/openhuman/socket/ws_loop.rs
• src/openhuman/socket/ws_loop_tests.rs

[oxoxDev]

Thanks for this, @graycyrus — and credit where due: this PR was filed first (this one at 04:24, #2905 at 05:47). Both target the same crash, TAURI-RUST-9C / #2892 (the stale-token "Invalid token" reconnect storm), with the same set of files.

We're going to consolidate on #2905 and close this one. To be transparent about why — it's not a comment on effort, the two diffs are genuinely close — but #2905 edges ahead on a few correctness points:

• Token-error detection — fix(socket): refresh token before reconnect, fast-fail on Invalid token (#2892) #2905 anchors on both "socket.io connect error" and "invalid token"; this PR matches a bare contains("invalid token"), which can fire on unrelated upstream errors that happen to contain that phrase.
• Bounded retry — on a refreshed-but-different token this PR resets consecutive_failures = 0 and continues with no backoff; if the token store keeps returning new tokens (rotation / non-deterministic source) that's an unbounded no-sleep retry loop. fix(socket): refresh token before reconnect, fast-fail on Invalid token (#2892) #2905 caps the immediate-retry to one attempt before falling through to backoff + escalation.
• Genuine-expiry UX — fix(socket): refresh token before reconnect, fast-fail on Invalid token (#2892) #2905 fast-fails a definitively-expired session, surfaces "session expired — please sign in again" to the UI, and emits no Sentry event; this PR runs to the 5-retry sustained-outage path, which still fires the very Sentry event we're trying to silence.
• This diff also drops the unrelated sustained_outage_for_tls_handshake_eof_classifies_as_expected regression test (TAURI-RUST-4ZD) — looks like a stale base.

Your is_invalid_token_error case-insensitivity rationale and the run_connection → InvalidToken e2e mock test are both nicely done — if any of that is missing from #2905 it's worth porting over. Closing this in favor of #2905; thanks again for the fast turnaround on the crash.