HTTP 500 Internal Server Error vs WebSocket 1011 Internal Error
HTTP 500 and WebSocket 1011 both indicate unexpected server-side errors, but in different communication models. HTTP 500 terminates a single request-response cycle, while WebSocket 1011 closes a long-lived bidirectional connection due to an internal server failure.
Description
The server encountered an unexpected condition that prevented it from fulfilling the request. A generic catch-all for server-side errors.
Quand vous le voyez
When an unhandled exception occurs, a database connection fails, or server code has a bug.
Comment résoudre
Check server logs for the stack trace. Common causes: unhandled exceptions, database errors, misconfigurations.
Description
The server is terminating the connection because it encountered an unexpected condition that prevented it from fulfilling the request.
Quand vous le voyez
The server hit an unhandled exception or crashed while processing a WebSocket message. This is the WebSocket equivalent of HTTP 500 Internal Server Error.
Comment résoudre
Check the server-side application logs for stack traces and exceptions. Fix the underlying bug that caused the crash and add proper error handling around message processing.
Différences clés
HTTP 500 ends a single request; WebSocket 1011 terminates an entire persistent connection.
WebSocket 1011 is sent as a close frame with the status code; HTTP 500 is a response status line.
After HTTP 500, the client can immediately retry the request; after WebSocket 1011, the client must reconnect.
WebSocket 1011 may cause data loss if the server crashes mid-stream; HTTP 500 is atomic per request.
Both indicate a bug or unexpected condition that the server could not handle gracefully.
Quand utiliser lequel
Return HTTP 500 for unexpected errors in request-response APIs. Send WebSocket close code 1011 when the server must terminate a WebSocket connection due to an unexpected error like an unhandled exception or a backend dependency failure. Clients should implement automatic reconnection with backoff when they receive 1011.