Response
Status Codes
After sending a request, you will receive a response, including a status code, response header, and response body.
A status code is a group of digits, ranging from 1xx to 5xx. It indicates the status of a request. For more information, see Status Codes.
For example, if status code 201 is returned for calling the API used to obtain a user token, the request is successful.
Response Header
A response header corresponds to a request header, for example, Content-Type.
Figure 1 shows the response header for the API of obtaining a user token, in which x-subject-token is the desired user token. You can use this token to authenticate the calling of other APIs.
(Optional) Response Body
A response body is generally returned in a structured format, corresponding to the Content-Type in the response header, and is used to transfer content other than the response header.
The following shows part of the response body for the API to obtain a user token. For the sake of space, only part of the content is displayed here.
{ "token": { "expires_at": "2019-02-13T06:52:13.855000Z", "methods": [ "password" ], "catalog": [ { "endpoints": [ { "region_id": "xxxxxxxx", ......
If an error occurs during API calling, the system returns an error code and a message to you. The following shows the format of an error response body:
{ "error": { "message": "The request you have made requires authentication.", "title": "Unauthorized" } }
In the preceding information, error_code is an error code, and error_msg describes the error.
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