4×× - Client Error

417 Expectation Failed

The expectation given in the request’s Expect header field¹ could not be met by at least one of the inbound servers.

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• ¹ Expect RFC7231 Section 5.1.1
• Source: RFC7231 Section 6.5.14

417 Code References

• Rails HTTP Status Symbol: :expectation_failed
• Go HTTP Status Constant: http.StatusExpectationFailed
• Symfony HTTP Status Constant: Response::HTTP_EXPECTATION_FAILED
• Python2 HTTP Status Constant: httplib.EXPECTATION_FAILED
• Python3+ HTTP Status Constant: http.client.EXPECTATION_FAILED
• Python3.5+ HTTP Status Constant: http.HTTPStatus.EXPECTATION_FAILED