Sandbox::https://github.com/googleapis/google-auth-library-nodejs/blob/main/samples/headers.js

This repository was archived by the owner on Nov 20, 2025. It is now read-only.

Repository navigation

// Licensed under the Apache License, Version 2.0 (the "License");

// you may not use this file except in compliance with the License.

// You may obtain a copy of the License at

// http://www.apache.org/licenses/LICENSE-2.0

// Unless required by applicable law or agreed to in writing, software

// distributed under the License is distributed on an "AS IS" BASIS,

// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.

// See the License for the specific language governing permissions and

// limitations under the License.

'use strict';

/**

* Import the GoogleAuth library, and create a new GoogleAuth client.

const {GoogleAuth} = require('google-auth-library');

const fetch = require('node-fetch');

/**

* This example shows obtaining authenticated HTTP request headers, and using

* those headers to construct your own authenticated request. This example uses

* node-fetch, but you could use any HTTP client you like.

async function main() {

// create auth instance with custom scopes.

const auth = new GoogleAuth({

scopes: 'https://www.googleapis.com/auth/cloud-platform',

});

const projectId = await auth.getProjectId();

const url = `https://dns.googleapis.com/dns/v1/projects/${projectId}`;

// obtain an authenticated client

const client = await auth.getClient();

// Use the client to get authenticated request headers

const headers = await client.getRequestHeaders();

console.log('Headers:');

console.log(headers);

// Attach those headers to another request, and use it to call a Google API

const res = await fetch(url, {headers});

const data = await res.json();

console.log('DNS Info:');

console.log(data);

}

main().catch(console.error);