# WebSocket close code 1000: Normal Closure

- **ID:** `api/websocket-connection-closed-with-code-1000`
- **Domain:** api
- **Category:** protocol_error
- **Error Code:** `1000`
- **Verification:** ai_generated
- **Fix Rate:** 75%

## Root Cause

The WebSocket connection was closed normally by either the client or server, often due to a timeout, idle timeout, or explicit close.

## Version Compatibility

| Version | Status | Introduced | Deprecated |
|---------|--------|------------|------------|
| WebSocket RFC 6455 | active | — | — |
| Node.js ws library v8.x | active | — | — |
| Python websockets v10.x | active | — | — |

## Workarounds

1. **Implement automatic reconnection with exponential backoff. Example (JavaScript): function connect() { const ws = new WebSocket('wss://example.com/socket'); ws.onclose = (event) => { if (event.code === 1000) { setTimeout(connect, 1000); } }; }** (75% success)
   ```
   Implement automatic reconnection with exponential backoff. Example (JavaScript): function connect() { const ws = new WebSocket('wss://example.com/socket'); ws.onclose = (event) => { if (event.code === 1000) { setTimeout(connect, 1000); } }; }
   ```
2. **Send periodic WebSocket ping/pong frames to keep the connection alive and avoid idle timeout. Example (Node.js): ws.ping(); setInterval(() => ws.ping(), 30000);** (80% success)
   ```
   Send periodic WebSocket ping/pong frames to keep the connection alive and avoid idle timeout. Example (Node.js): ws.ping(); setInterval(() => ws.ping(), 30000);
   ```

## Dead Ends

- **** — Reconnecting immediately without investigating the reason for closure may lead to repeated disconnections if the server enforces a rate limit or idle timeout. (60% fail)
- **** — Disabling WebSocket compression or other features incorrectly may not prevent normal closure due to server-side policies. (30% fail)