Response

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 response. For more information, see Status Codes.

For example, if status code 201 is returned for calling the API obtaining a user token through password authentication, the request is successful.

Response Header

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

In the response header for the API used to obtain a user token through password authentication, x-subject-token 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 through password authentication:

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

If an error occurs during API calling, an error code and a message will be displayed. The following shows 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.