WebSocket Reconnection Kit
WebSocket manager template with automatic reconnection, gap detection, and state recovery for trading bots.
What’s inside
Individual files are accessible (best for SEO/AI), plus you can download the full ZIP.
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What's Inside
A production-ready WebSocket connection manager for trading bots—handles the messy reality of exchange connections dropping, messages going missing, and state getting out of sync.
Files in This Package
| File | Purpose |
|---|---|
| websocket-manager.ts | TypeScript WebSocket manager with reconnection, heartbeat, and gap detection |
| reconnection-checklist.md | Complete implementation and audit checklist |
The Three-Layer Defense
- Reconnection Layer — Automatic reconnection with exponential backoff
- Gap Detection Layer — Sequence number tracking to catch missed messages
- State Recovery Layer — REST verification after every reconnect
Key Features
- Exponential backoff with jitter to prevent thundering herd
- Heartbeat management with configurable timeout
- Sequence tracking for gap detection (supports multiple field names)
- Event-driven API with hooks for all connection states
- State recovery helper for post-reconnect reconciliation
Exchange Compatibility
Works with any exchange that uses standard WebSocket protocol:
| Exchange | Heartbeat | Special Handling |
|---|---|---|
| Binance | 30s | Listen key refresh |
| Bybit | 20s | seq field tracking |
| OKX | Respond to ping | Login required |
The Core Principle
Never trust WebSocket alone. After any reconnect, verify state via REST API.
WebSocket is for speed. REST is for truth. This kit enforces that pattern.
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