Disable downloads in Puppeteer

Question

Is it possible to disable downloads for specific mime type. For example navigating to an url that by default will download a zip archive, should do nothing.

Edit:

I don't know in advance what url will be visited and what will return that url.

Answer 1

Solution that worked for me:

const client = await page.target().createCDPSession();

// intercept request when response headers was received
await client.send('Network.setRequestInterception', {
  patterns: [{
      urlPattern: '*',
      resourceType: 'Document',
      interceptionStage: 'HeadersReceived'
  }],
});

await client.on('Network.requestIntercepted', async e => {
    let headers = e.responseHeaders || {};
    let contentType = headers['content-type'] || headers['Content-Type'] || '';
    let obj = {interceptionId: e.interceptionId};
    if (contentType.indexOf('application/zip') > -1) {
        obj['errorReason'] = 'BlockedByClient';
    }

    await client.send('Network.continueInterceptedRequest', obj);
});

This piece of code blocks navigation to an url that will download a zip archive and pass the rest of requests.

Thanks to @hardkoded for suggestion to visit github.com/GoogleChrome/puppeteer/issues/1191.