Dart

Okta: Refresh Access Token with the Auth Code Flow

See more Okta OAuth/OIDC Examples

Demonstrates how to refresh a token that was obtained using the authorization code flow. 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.

  // See Get Okta Access Token using Authorization Code Flow with PKCE 
  // for sample code showing how to obtain an Okta access token using the authorization code flow for native apps (with PKCE).

  final jsonToken = CkJsonObject();
  try {
    jsonToken.loadFile('qa_data/tokens/okta.json');
  } on ChilkatException {
    print('Failed to load myob.json');
    return;
  }

  final oauth2 = CkOAuth2();

  oauth2.tokenEndpoint = 'https://{yourOktaDomain}/oauth2/default/v1/token';

  // Replace these with actual values.
  oauth2.clientId = 'OKTA_CLIENT_ID';
  oauth2.clientSecret = 'OKTA_CLIENT_SECRET';

  // Get the "refresh_token"
  oauth2.refreshToken = jsonToken.stringOf('refresh_token');

  // Send the HTTP POST to refresh the access token..
  oauth2.verboseLogging = true;
  try {
    oauth2.refreshAccessToken();
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Load the access token response into the json object 
  jsonToken.load(oauth2.accessTokenResponse);

  // Save the new JSON access token response to a file.
  // The access + refresh tokens contained in this JSON will be needed for the next refresh.
  final sbJson = CkStringBuilder();
  jsonToken.emitCompact = false;
  jsonToken.emitSb(sbJson);
  sbJson.writeFile('qa_data/tokens/okta.json', 'utf-8', false);

  print('OAuth2 authorization granted!');
  print('New Access Token = ${oauth2.accessToken}');
}