How to setcookie and user agent header from crawler.run?

[am1ru1]

I have search within issues and docs but does seem to be able to figure out how to setCookies and custom headers for the crawler.run example.
Do I need to use sessions?

import { PlaywrightCrawler } from 'crawlee';

const crawler = new PlaywrightCrawler({
    async requestHandler({ request, enqueueLinks, log }) {
        log.info(request.url);
        // Add all links from page to RequestQueue
        await enqueueLinks();
    },
    maxRequestsPerCrawl: 10, // Limitation for only 10 requests (do not use if you want to crawl all links)
});

// Run the crawler with initial request
await crawler.run(['https://crawlee.dev']);

[LeMoussel]

You can use preNavigationHooks to modify your reqeusts with some specific headers / add cookies:

[B4nan]

the crawler.run method also accepts https://crawlee.dev/api/core/interface/RequestOptions or even a Request instance, not just string. you can use that to provide any headers

[am1ru1]

thanks @LeMoussel @B4nan , I managed to do the following:

const crawler = new PlaywrightCrawler({
    async requestHandler({ request, enqueueLinks, log }) {
        log.info(request.url);
        // Add all links from page to RequestQueue
        await enqueueLinks();
    },
    maxRequestsPerCrawl: 10, // Limitation for only 10 requests (do not use if you want to crawl all links)
    preNavigationHooks: [({ session, request }) => {
        session?.setCookies([{ name: 'OptanonAlertBoxClosed', value: new Date().toISOString() }], request.url);
    }],
});