What is the primary purpose of using a proxy in Puppeteer and headless Chrome?

What is the primary purpose of using a proxy in Puppeteer and headless Chrome?

To use a proxy in Puppeteer with the puppeteer-page-proxy library:

  1. Install the library with npm:

    npm i puppeteer-page-proxy
    
  2. Require the library in your code:

    const useProxy = require('puppeteer-page-proxy');
    
  3. Set a proxy for the entire page:

    await useProxy(page, 'http://127.0.0.1:8000');
    
  4. If you want a different proxy for each request, enable request interception and set proxies for requests:

    await page.setRequestInterception(true);
    page.on('request', req => {
        useProxy(req, 'socks5://127.0.0.1:9000');
    });
    
  5. To confirm the changed IP address of the page:

    const data = await useProxy.lookup(page);
    console.log(data.ip);
    

The library supports various proxy types (http, https, socks4, and socks5) and authentication if needed.

Repository: https://github.com/Cuadrix/puppeteer-page-proxy