Common request parameters

Common request parameters must be included in all WAF API requests.

Table 1. Common request parameters
Parameter Type Required Description
Region String Yes The ID of the region to which the WAF instance belongs. Set the value to:
  • CN: indicates mainland China.
  • cn-hongkong: indicates the overseas region.
InstanceId String Yes The ID of the WAF instance.
Note You can call DescribePayInfo to view your WAF instance ID.
Format String No The format in which to return the response. Valid values:
  • JSON (default)
  • XML
Version String Yes The version number of the API, in the format of YYYY-MM-DD. Set the value to:

2018-01-17
AccessKeyId String Yes The AccessKey ID provided to you by Alibaba Cloud
Signature String Yes The signature string in the API request.
SignatureMethod String Yes The encryption method of the signature string. Set the value to

HMAC-SHA1
Timestamp String Yes The UTC time when the request is signed. Specify the time in the ISO 8601 standard in the yyyy-MM-ddTHH:mm:ssZ format. The time must be in UTC.

For example, 20:00:00 on January 10, 2013 in China Standard Time (UTC +8) is written as 2013-01-10T12:00:00Z.

SignatureVersion String Yes The version of the signature encryption algorithm. Set the value to

1.0.
SignatureNonce String Yes A unique, random number used to prevent replay attacks.

You must use different numbers for multiple requests.
ResourceOwnerAccount String No The account that owns the resource to be accessed by the current request.
Sample requests 
https://wafopenapi.cn-hangzhou.aliyuncs.com/?Action=DescribeDomainNames
&Region=cn
&InstanceId=waf_elasticity-cn-0xldbqtm005
&Timestamp=2014-05-19T10%3A33%3A56Z
&Format=xml
&AccessKeyId=testid
&SignatureMethod=Hmac-SHA1
&SignatureNonce=NwDAxvLU6tFE0DVb
&Version=2018-01-17
&SignatureVersion=1.0
&Signature=Signature

Common response parameters

API responses use the HTTP response format where a 2xx status code indicates a successful call and a 4xx or 5xx status code indicates a failed call. Response data can be returned in either the JSON or XML format. You can specify the response format when you are making the request. The default response format is XML.

Every response returns a unique RequestId (request ID) regardless of whether the call is successful.
  • XML format 
    <?xml xml version="1.0" encoding="utf-8"? > 
    <!--Result Root Node-->
    <Operation Name+Response>
        <!-Return Request Tag-->
        <RequestId>4C467B38-3910-447D-87BC-AC049166F216</RequestId>
        <!-Return Result Data-->
    </Operation Name+Response>
  • JSON format 
    {
    "RequestId":"4C467B38-3910-447D-87BC-AC049166F216",
    /*Return Result Data*/
    }