http 100 Continue

1×× Informational

100 Continue

The initial part of a request has been received and has not yet been rejected by the server. The server intends to send a final response after the request has been fully received and acted upon.

When the request contains an Expect header field that includes a 100-continue expectation, the 100 response indicates that the server wishes to receive the request payload body. The client ought to continue sending the request and discard the 100 response.

If the request did not contain an Expect header field containing the 100-continue expectation, the client can simply discard this interim response.

• 1 Expect RFC7231 Section 5.1.1
• Source: RFC7231 Section 6.1.1

100 Code References

Rails HTTP Status Symbol :continue
Go HTTP Status Constant http.StatusContinue
Symfony HTTP Status Constant Response::HTTP_CONTINUE
Python2 HTTP Status Constant httplib.CONTINUE
Python3 HTTP Status Constant http.client.CONTINUE
Python3.5 HTTP Status Constant http.HTTPStatus.CONTINUE