Returned Values

After sending a request, you will receive a response, including the status code, response header, and response body.

Status Codes

A status code is a group of digits indicating the status of a response. It ranges from 2xx (indicating successes) to 4xx or 5xx (indicating errors). For more information, see Status Codes.

Response Headers

A response header corresponds to a request header, for example, Content-Type.

For details about common response headers, see Table 1.

**Table 1** Common response headers
Header	Description
Content-Length	The length (in bytes) of the response body. Type: string Default value: none
Connection	Indicates whether the connection to the server is a long connection or a short connection. Type: string Valid values: keep-alive \| close Default value: none
Date	The time when a response is returned. Type: string Default value: none
x-obs-id-2	A special symbol that helps troubleshoot faults. Type: string Default value: none
x-obs-request-id	The unique identifier of the request. The value is generated by the SFS service and can be used for troubleshooting. Type: string Default value: none

(Optional) Response Body

A response body is generally returned in a structured format (for example, JSON or XML), corresponding to Content-Type in the response header, and is used to transfer content other than the response header.

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