Returned Values

Status Code

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 Code.

For example, if status code 201 is returned for calling the API used to obtain a user token, the request is successful.

Response Header

Similar to a request, a response also has a header, for example, Content-Type.

Figure 1 shows the response header fields for the API used to obtain a user token is called. The x-subject-token header field is the desired user token. This token can then be used to authenticate the calling of other APIs.

Figure 1 Header fields of the response to the request for obtaining a user token

Response Body

The body of a response is often returned in structured format as specified in the Content-type header field. The response body transfers content except the response header.

The following is part of the response body for the API used to obtain a user token. The following shows part of the response body for the API to obtain a user token.

{ 
    "token": { 
        "expires_at": "2019-02-13T06:52:13.855000Z", 
        "methods": [ 
            "password" 
        ], 
        "catalog": [ 
            { 
                "endpoints": [ 
                    { 
                        "region_id": "cn-north-1",
                       
                       
                       
                       

......

If an error occurs during API calling, the system returns an error code and message to you. The following shows the format of an error response body:

{ 
    "error_msg": "The format of message is error", 
    "error_code": "AS.0001" 
}

In the response body, error_code is an error code, and error_msg provides information about the error.