：SetSubscriptionAttributes

Authorization

By default, only Alibaba Cloud accounts can call this operation. RAM users can call this operation only after these RAM users are granted related permissions. The following table describes the authorization information of this operation. For more information, see Permission policies and examples.

Request

A request consists of the following parts:

• Request line

  PUT /topics/$TopicName/subscriptions/$SubscriptionName?metaoverride=true HTTP/1.1

• Operation-specific URI parameters

  To modify the parameters of a subscription, you can specify metaoverride=true in the URI.

• Operation-specific request headers

  None.

• Request body

  The request body is in the XML format. The request body includes the parameters that are used to modify a subscription.

  Parameter	Type	Required	Example	Description
  NotifyStrategy	Boolean	No	BACKOFF_RETRY	The retry policy that is applied if an error occurs when MNS pushes messages to the endpoint. Valid values: BACKOFF_RETRY: retries with a fixed backoff interval. EXPONENTIAL_DECAY_RETRY: retries with exponential backoff. For more information, see NotifyStrategy. Default value: BACKOFF_RETRY.

Response

A response consists of the following parts:

• HTTP status code

  HTTP/1.1 204 No Content

• Operation-specific response headers

  None.

• Response body

  None.

Examples

Sample requests

PUT /topics/$TopicName/subscriptions/$SubscriptionName?metaoverride=true HTTP/1.1
Host: $AccountId.mns.cn-hangzhou.aliyuncs.com
Date: Tue, 08 Dec 2015 06:09:22 GMT
Authorization: MNS 15B4D3461F177624206A:rNT4xclLS297/n0UFYIezzHJ****
x-mns-version: 2015-06-06
<?xml version="1.0" encoding="utf-8"?>
<Subscription xmlns="http://mns.aliyuncs.com/doc/v1/">
    <NotifyStrategy>BACKOFF_RETRY</NotifyStrategy>
</Subscription>

Sample success responses

HTTP/1.1 204 No Content
x-mns-request-id:56667412B2B71C9C1600****
x-mns-version: 2015-06-06

Error codes