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Anti-DDoS:ConfigL7UsKeepalive

Last Updated:Dec 09, 2025

Configures the back-to-origin persistent connection settings for a domain name.

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RAM authorization

The table below describes the authorization required to call this API. You can define it in a Resource Access Management (RAM) policy. The table's columns are detailed below:

  • Action: The actions can be used in the Action element of RAM permission policy statements to grant permissions to perform the operation.

  • API: The API that you can call to perform the action.

  • Access level: The predefined level of access granted for each API. Valid values: create, list, get, update, and delete.

  • Resource type: The type of the resource that supports authorization to perform the action. It indicates if the action supports resource-level permission. The specified resource must be compatible with the action. Otherwise, the policy will be ineffective.

    • For APIs with resource-level permissions, required resource types are marked with an asterisk (*). Specify the corresponding Alibaba Cloud Resource Name (ARN) in the Resource element of the policy.

    • For APIs without resource-level permissions, it is shown as All Resources. Use an asterisk (*) in the Resource element of the policy.

  • Condition key: The condition keys defined by the service. The key allows for granular control, applying to either actions alone or actions associated with specific resources. In addition to service-specific condition keys, Alibaba Cloud provides a set of common condition keys applicable across all RAM-supported services.

  • Dependent action: The dependent actions required to run the action. To complete the action, the RAM user or the RAM role must have the permissions to perform all dependent actions.

Action

Access level

Resource type

Condition key

Dependent action

yundun-ddoscoo:ConfigL7RsKeepalive

none

*All Resource

*

None None

Request parameters

Parameter

Type

Required

Description

Example

Domain

string

No

The domain name of the website.

Note

A website forwarding rule must be configured for the domain name. Call DescribeDomains to query all domain names.

www.aliyun.com

UpstreamKeepalive

string

Yes

The back-to-origin persistent connection settings. This parameter is a string that consists of a JSON struct. The JSON struct contains the following fields:

  • enabled: Boolean | Required | Specifies whether to enable back-to-origin persistent connections.

  • keepalive_requests: Integer | Required | The number of requests that can be reused in a persistent connection.

  • keepalive_timeout: Integer | Required | The idle timeout period of a persistent connection.

{"enabled": true, "keepalive_requests": 1000,"keepalive_timeout": 30}

DownstreamKeepalive

string

No

The idle timeout period for the persistent connection between the client and Anti-DDoS.

60

Response elements

Element

Type

Description

Example

object

Schema of Response

RequestId

string

The ID of the request. This is a unique identifier that Alibaba Cloud generates for the request. You can use this ID to troubleshoot and locate issues.

6D48AED0-41DB-5D9B-B484-3B6AAD312AW2

Examples

Success response

JSON format

{
  "RequestId": "6D48AED0-41DB-5D9B-B484-3B6AAD312AW2"
}

Error codes

See Error Codes for a complete list.

Release notes

See Release Notes for a complete list.