WebSocket 1000 Normal Closure vs 1001 Going Away
Both WebSocket 1000 (Normal Closure) and 1001 (Going Away) belong to the WebSocket Close Codes category. 1000 indicates that the connection has been closed cleanly, meaning the purpose for which it was established has been fulfilled. Both endpoints agree the session is complete. Meanwhile, 1001 means that an endpoint is going away, such as a server shutting down or a browser navigating away from the page. The connection must be closed.
Description
The connection has been closed cleanly, meaning the purpose for which it was established has been fulfilled. Both endpoints agree the session is complete.
Quand vous le voyez
The WebSocket connection closed gracefully after both sides finished exchanging data. This is the expected close code for a successful session.
Comment résoudre
No fix needed — this indicates everything worked as intended. If you did not expect the connection to close, check your application logic for premature close() calls.
Description
An endpoint is going away, such as a server shutting down or a browser navigating away from the page. The connection must be closed.
Quand vous le voyez
The server is shutting down for maintenance, or the user navigated away from the page or closed the browser tab while a WebSocket was open.
Comment résoudre
Implement automatic reconnection logic with exponential backoff in your client. If the server is restarting, the client should retry after a short delay.
Différences clés
WebSocket 1000: The connection has been closed cleanly, meaning the purpose for which it was established has been fulfilled. Both endpoints agree the session is complete.
WebSocket 1001: An endpoint is going away, such as a server shutting down or a browser navigating away from the page. The connection must be closed.
You encounter 1000 when the WebSocket connection closed gracefully after both sides finished exchanging data. This is the expected close code for a successful session.
You encounter 1001 when the server is shutting down for maintenance, or the user navigated away from the page or closed the browser tab while a WebSocket was open.
Quand utiliser lequel
For 1000 (Normal Closure): No fix needed — this indicates everything worked as intended. If you did not expect the connection to close, check your application logic for premature close() calls. For 1001 (Going Away): Implement automatic reconnection logic with exponential backoff in your client. If the server is restarting, the client should retry after a short delay.