DescribeCap - Anti-DDoS - Alibaba Cloud Documentation Center

Queries the download link to the traffic data that is captured when a DDoS attack event occurs.

Operation description

You can call the DescribeCap operation to query the download link to the traffic data that is captured when a DDoS attack event occurs. You can download the traffic data from the download link and use the data as evidence.

Limits

You can call this operation up to 10 times per second per account. If the number of the calls per second exceeds the limit, throttling is triggered. As a result, your business may be affected. We recommend that you take note of the limit when you call this operation.

Debugging

OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer.

Debug

Authorization information

There is currently no authorization information disclosed in the API.

Request parameters

Parameter	Type	Required	Description	Example
DdosRegionId	string	Yes	The region ID of the asset that is under DDoS attacks. The asset is assigned a public IP address. Note You can call the DescribeRegions operation to query the most recent region list.	cn-hangzhou
InstanceType	string	Yes	The type of the asset that is under DDoS attacks. Valid values: ecs: ECS instance slb: SLB instance eip: EIP	ecs
InstanceId	string	Yes	The ID of the asset that is under DDoS attacks. Note You can call the DescribeInstance operation to query the IDs of ECS instances, SLB instances, and EIPs within the current Alibaba Cloud account.	i-bp10bclrt56fblts****
BegTime	long	Yes	The start time of the DDoS attack event. The value is a UNIX timestamp. Unit: milliseconds. Note You can call the DescribeDdosEventList operation to query the start time of each DDoS attack event that occurred on an asset.	1637812279000
InternetIp	string	No	The public IP address of the asset that is under DDoS attacks.	121.199.XX.XX

Response parameters

Parameter	Type	Description	Example
	object
RequestId	string	The ID of the request, which is used to locate and troubleshoot issues.	C728D7E9-9A39-52E0-966B-5C33118BDBB0
CapUrl	object	The download link to the traffic data that is captured when a DDoS attack event occurs.
Url	string	The download link to the traffic data.	http://beaver-pack**.oss-cn-hangzhou.aliyuncs.com/ddos-2021112511-121.89.XX.XX.cap?Expires=1637824408&OSSAccessKeyId=LTAIXu2lJhw3&Signature=KKSzOMSUajtwcqfqxkU1nK69d4**

Examples

Sample success responses

JSONformat

{
  "RequestId": "C728D7E9-9A39-52E0-966B-5C33118BDBB0",
  "CapUrl": {
    "Url": "http://beaver-pack****.oss-cn-hangzhou.aliyuncs.com/ddos-2021112511-121.89.XX.XX.cap?Expires=1637824408&OSSAccessKeyId=LTAIXu2lJhw3****&Signature=KKSzOMSUajtwcqfqxkU1nK69d4****"
  }
}

Error codes

For a list of error codes, visit the Service error codes.