4×× CLIENT ERROR

417 EXPECTATION FAILED

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

Expect RFC7231 Section 5.1.1

417 EXPECTATION FAILED 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

 

Recommended:

• 416 REQUESTED RANGE NOT SATISFIABLE
• 415 UNSUPPORTED MEDIA TYPE