React Native

Refresh Schwab OAuth2 Access Token

See more Schwab Examples

Demonstrates how to refresh a Schwab OAuth2 access token. React Native

import { JsonObject, OAuth2, StringBuilder } from '@chilkat/react-native'

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

  // See Get Schwab OAuth2 Access Token 
  // for sample code showing how to obtain a Schwab access token for desktop apps.

  // This example assumes we previously obtained an OAuth2 access token for Schwab.

  const jsonToken = new JsonObject();
  try {
    jsonToken.loadFile('qa_data/tokens/schwab-access-token.json');
  } catch {
    console.log('Failed to load schwab-access-token.json');
    return;
  }

  // The access token JSON looks something like this:

  // {
  //   "expires_in": 3600,
  //   "x_refresh_token_expires_in": 8726400,
  //   "refresh_token": "L011546037639r ... 3vR2DrbOmg0Sdagw",
  //   "access_token": "eyJlbmMiOiJBMTI4Q0 ... oETJEMbeggg",
  //   "token_type": "bearer"
  // }

  const oauth2 = new OAuth2();

  oauth2.tokenEndpoint = 'https://api.schwabapi.com/v1/oauth/token';

  // Replace these with actual values.
  oauth2.clientId = 'APP_KEY';
  oauth2.clientSecret = 'APP_SECRET';
  oauth2.useBasicAuth = true;

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

  // Send the HTTP POST to refresh the access token..
  try {
    await oauth2.refreshAccessTokenAsync();
  } catch {
    console.log(oauth2.lastErrorText);
    return;
  }

  // The response contains a new access token, but we must keep
  // our existing refresh token for when we need to refresh again in the future.
  jsonToken.updateString('access_token', oauth2.accessToken);

  // 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.
  const sbJson = new StringBuilder();
  jsonToken.emitCompact = false;

  jsonToken.emitSb(sbJson);
  sbJson.writeFile('qa_data/tokens/schwab-access-token.json', 'utf-8', false);

  console.log('OAuth2 token refreshed!');
  console.log(`New Access Token = ${oauth2.accessToken}`);
}