HTTP 202 Accepted vs 417 Expectation Failed
HTTP 202 (Accepted) is a 2xx Success response, while 417 (Expectation Failed) is a 4xx Client Error response. 202 indicates that the request has been accepted for processing, but the processing has not been completed. The request might or might not eventually be acted upon. In contrast, 417 means that the server cannot meet the requirements of the Expect header.
Описание
The request has been accepted for processing, but the processing has not been completed. The request might or might not eventually be acted upon.
Когда вы это видите
For async operations like batch jobs, email sending, or background tasks that take time to complete.
Как исправить
Poll the provided status URL or wait for a callback/webhook.
Описание
The server cannot meet the requirements of the Expect header.
Когда вы это видите
When the server doesn't support Expect: 100-continue.
Как исправить
Remove the Expect header from your request.
Ключевые различия
202 is a 2xx Success response, while 417 is a 4xx Client Error response.
HTTP 202: The request has been accepted for processing, but the processing has not been completed. The request might or might not eventually be acted upon.
HTTP 417: The server cannot meet the requirements of the Expect header.
You encounter 202 when for async operations like batch jobs, email sending, or background tasks that take time to complete.
You encounter 417 when when the server doesn't support Expect: 100-continue.
Когда что использовать
For 202 (Accepted): Poll the provided status URL or wait for a callback/webhook. For 417 (Expectation Failed): Remove the Expect header from your request.