Dart

SNS Publish (Send Message)

See more Amazon SNS Examples

Sends a message to all of a topic's subscribed endpoints.

See SNS Publish for more information.

Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // This example requires the Chilkat API to have been previously unlocked.
  // See Global Unlock Sample for sample code.

  final rest = CkRest();

  // Connect to the Amazon AWS REST server.
  // such as https://sns.us-west-2.amazonaws.com/
  final bTls = true;
  final port = 443;
  final bAutoReconnect = true;
  rest.connect('sns.us-west-2.amazonaws.com', port, bTls, bAutoReconnect);

  // Provide AWS credentials for the REST call.
  final authAws = CkAuthAws();
  authAws.accessKey = 'AWS_ACCESS_KEY';
  authAws.secretKey = 'AWS_SECRET_KEY';
  // the region should match our URL above..
  authAws.region = 'us-west-2';
  authAws.serviceName = 'sns';

  rest.setAuthAws(authAws);

  rest.addQueryParam('Action', 'Publish');
  rest.addQueryParam('TopicArn', 'arn:aws:sns:us-west-2:957491831129:chilkat');
  // For subscribed email addresses, this is the subject of the email.
  rest.addQueryParam('Subject', 'Test Message from Amazon SNS');
  rest.addQueryParam('Message', 'This is a test message from Amazon SNS');

  final String responseXml;
  try {
    responseXml = rest.fullRequestNoBody('GET', '/');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // A successful response will have a status code equal to 200.
  if (rest.responseStatusCode != 200) {
    print('response status code = ${rest.responseStatusCode}');
    print('response status text = ${rest.responseStatusText}');
    print('response header: ${rest.responseHeader}');
    print('response body: $responseXml');
    return;
  }

  // Examine the successful XML response.
  final xml = CkXml();
  xml.loadXml(responseXml);
  print(xml.getXml());

  // To get the MessageId
  print('MessageId: ${xml.chilkatPath('PublishResult|MessageId|*')}');

  // A sample successful response:
  // <?xml version="1.0" encoding="utf-8" ?>
  // <PublishResponse xmlns="http://sns.amazonaws.com/doc/2010-03-31/">
  //     <PublishResult>
  //         <MessageId>5e135f2e-898d-5006-940a-0f43829c764b</MessageId>
  //     </PublishResult>
  //     <ResponseMetadata>
  //         <RequestId>9adbf47d-9e07-5981-bb7f-a4609a167fcc</RequestId>
  //     </ResponseMetadata>
  // </PublishResponse>
}