CONC-HIGH-1: Add mutex to wsClient.miners map to prevent race condition
P2P-CRIT-2: Add MaxMessageSize config (1MB default) to prevent memory exhaustion
P2P-CRIT-3: Track pending connections during handshake to enforce connection limits
RESIL-HIGH-1: Add recover() to 4 background goroutines to prevent service crashes
TEST-CRIT-1: Create auth_test.go with 16 tests covering Basic/Digest auth
RESIL-HIGH-3: Implement circuit breaker for GitHub API with caching fallback
Also fixed: NonceExpiry validation in auth.go to prevent panic on zero interval
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Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Error Handling:
- Fix silent Write() error in WebSocket (events.go)
- Add error context to transport handshake messages
- Check os.MkdirAll error in zip extraction (miner.go)
- Explicitly ignore io.Copy errors on drain with comments
- Add retry logic (2 attempts) for transient stats collection failures
Resource Lifecycle:
- Add shutdown mechanism to DigestAuth goroutine
- Call Service.Stop() on context cancellation
- Add NodeService transport cleanup to Service.Stop()
- Fix WriteStdin goroutine leak on timeout with non-blocking send
API Design:
- Add profile validation (name, miner type required)
- Return 404 instead of 500 for missing profile PUT
- Make DELETE profile idempotent (return success if not found)
- Standardize error responses in node_service.go handlers
Observability:
- Add logging for P2P GetAllStats failures
- Add request ID correlation helper for handler logs
- Add logging for miner process exits (xmrig_start.go)
- Rate limit debug logs in transport hot path (1 in 100)
- Add metrics infrastructure with /metrics endpoint
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
