This topic describes the common request and response parameters.
Common request parameters
Parameter | Type | Required | Description |
---|---|---|---|
Format | String | No | The format in which to return the response. Default value: XML. Valid values:
|
Version | String | Yes | The version number of the API. Specify the version number in the YYYY-MM-DD format. Set the value to 2019-09-10. |
Signature | String | Yes | The signature string of the current request. |
SignatureMethod | String | Yes | The encryption method of the signature string. Set the value to HMAC-SHA1. |
SignatureNonce | String | Yes | A unique, random number used to prevent replay attacks. You must use different numbers for different requests. |
SignatureVersion | String | Yes | The version of the signature encryption algorithm. Set the value to 1.0. |
AccessKeyId | String | Yes | The AccessKey ID provided to you by Alibaba Cloud. |
Timestamp | String | Yes | The timestamp of the request. Specify the time in the ISO 8601 standard in the YYYY-MM-DDThh:mm:ssZ
format. The time must be in UTC.
For example, 2013-01-10T12:00:00Z indicates 20:00:00 on January 10, 2013 (UTC+8). |
Sample requests
http(s)://ros.aliyuncs.com/?Action=CreateStack
&Format=xml
&Version=2019-09-10
&Signature=Pc5WB8gokVn0xfeu%2FZV%2BiNM1dg****
&SignatureMethod=HMAC-SHA1
&SignatureNonce=1521552885****
&SignatureVersion=1.0
&AccessKeyId=LTAI4GENiH2u8MVj7Khh****
&Timestamp=2020-06-01T12:00:00Z
Common response parameters
Responses can be returned in the JSON or XML format. You can specify the response
format in the request. The default response format is JSON. Every response returns
a unique RequestId value regardless of whether the call is successful.
- A
2xx
HTTP status code indicates a successful call. - A
4xx
or5xx
HTTP status code indicates a failed call.
Sample responses
- XML format
<?xml version="1.0" encoding="utf-8"?> ><!--Result root node--> <Operation name + Response> <!--Response request tag--> <RequestId>4C467B38-3910-447D-87BC-AC049166F216</RequestId> <!--Returned data--> </Operation name + Response>
- JSON format
{ "RequestId":"4C467B38-3910-447D-87BC-AC049166F216" /*Returned data*/ }