React Native

Configure Azure SAS Authentication for REST

Demonstrates Rest.SetAuthAzureSas, which associates an AuthAzureSAS provider so requests are authorized with an Azure Shared Access Signature token.

Background. A SAS token grants time-limited, permission-scoped access to Azure Storage resources without exposing the account key on the wire. Use SAS authorization when a query-token approach is preferred over Shared Key headers.

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React Native

import { AuthAzureSAS, Rest } from '@chilkat/react-native'

async function chilkatExample() {
  const rest = new Rest();
  const bTls = true;
  const bAutoReconnect = true;
  try {
    await rest.connectAsync('example.com', 443, bTls, bAutoReconnect);
  } catch {
    console.log(rest.lastErrorText);
    return;
  }

  // Configure Azure Shared Access Signature (SAS) authentication.  Provide the account access key
  // and the SAS token query parameters; Chilkat adds the SAS token to each request.
  const azSas = new AuthAzureSAS();
  // Normally you would not hard-code secrets in source.  You should instead obtain them from an
  // interactive prompt, environment variable, or a secrets vault.
  azSas.accessKey = 'BASE64_ACCOUNT_ACCESS_KEY';

  // Associate the provider with the REST object.
  try {
    rest.setAuthAzureSas(azSas);
  } catch {
    console.log(rest.lastErrorText);
    return;
  }

  let responseText: string;
  try {
    responseText = await rest.fullRequestNoBodyAsync('GET', '/mycontainer/myblob.txt');
  } catch {
    console.log(rest.lastErrorText);
    return;
  }

  console.log(responseText);
}