After an HTTP/HTTPS endpoint is unsubscribed from a topic, Amazon SNS sends an unsubscribe confirmation message to the endpoint.
The unsubscribe confirmation message is a POST message with a message body that contains a JSON document with the following name-value pairs.
Type-
The type of message. For a unsubscribe confirmation, the type is
UnsubscribeConfirmation. MessageId-
A Universally Unique Identifier (UUID), unique for each message published. For a message that Amazon SNS resends during a retry, the message ID of the original message is used.
Token-
A value you can use with the
ConfirmSubscriptionaction to re-confirm the subscription. Alternatively, you can simply visit theSubscribeURL. TopicArn-
The Amazon Resource Name (ARN) for the topic that this endpoint has been unsubscribed from.
Message-
A string that describes the message. For unsubscribe confirmation, this string looks like this:
You have chosen to deactivate subscription arn:aws:sns:us-east-2:123456789012:MyTopic:2bcfbf39-05c3-41de-beaa-fcfcc21c8f55.\nTo cancel this operation and restore the subscription, visit the SubscribeURL included in this message. SubscribeURL-
The URL that you must visit in order to re-confirm the subscription. Alternatively, you can instead use the
Tokenwith theConfirmSubscriptionaction to re-confirm the subscription. Timestamp-
The time (GMT) when the unsubscribe confirmation was sent.
SignatureVersion-
Version of the Amazon SNS signature used.
-
If the
SignatureVersionis 1,Signatureis a Base64-encodedSHA1withRSAsignature of theMessage,MessageId,Type,Timestamp, andTopicArnvalues. -
If the
SignatureVersionis 2,Signatureis a Base64-encodedSHA256withRSAsignature of theMessage,MessageId,Type,Timestamp, andTopicArnvalues.
-
Signature-
Base64-encoded
SHA1withRSAorSHA256withRSAsignature of theMessage,MessageId,Type,Timestamp, andTopicArnvalues. SigningCertURL-
The URL to the certificate that was used to sign the message.
The following HTTP POST message is an example of a
UnsubscribeConfirmation message to an HTTP endpoint.
POST / HTTP/1.1
x-amz-sns-message-type: UnsubscribeConfirmation
x-amz-sns-message-id: 47138184-6831-46b8-8f7c-afc488602d7d
x-amz-sns-topic-arn: arn:aws:sns:us-west-2:123456789012:MyTopic
x-amz-sns-subscription-arn: arn:aws:sns:us-west-2:123456789012:MyTopic:2bcfbf39-05c3-41de-beaa-fcfcc21c8f55
Content-Length: 1399
Content-Type: text/plain; charset=UTF-8
Host: myhost.example.com
Connection: Keep-Alive
User-Agent: Amazon Simple Notification Service Agent
{
"Type" : "UnsubscribeConfirmation",
"MessageId" : "47138184-6831-46b8-8f7c-afc488602d7d",
"Token" : "2336412f37...",
"TopicArn" : "arn:aws:sns:us-west-2:123456789012:MyTopic",
"Message" : "You have chosen to deactivate subscription arn:aws:sns:us-west-2:123456789012:MyTopic:2bcfbf39-05c3-41de-beaa-fcfcc21c8f55.\nTo cancel this operation and restore the subscription, visit the SubscribeURL included in this message.",
"SubscribeURL" : "https://sns.us-west-2.amazonaws.com/?Action=ConfirmSubscription&TopicArn=arn:aws:sns:us-west-2:123456789012:MyTopic&Token=2336412f37fb6...",
"Timestamp" : "2012-04-26T20:06:41.581Z",
"SignatureVersion" : "1",
"Signature" : "EXAMPLEHXgJm...",
"SigningCertURL" : "https://sns.us-west-2.amazonaws.com/SimpleNotificationService-f3ecfb7224c7233fe7bb5f59f96de52f.pem"
}