Hang when creating PDF

Description

Exporting as PDF hangs and never completes. I’ve tried the following combinations

• BrowserFetcher.DefaultRevision (543305) and the current puppeteer version (571375)
• Platform.Win32 vs Platform.Win64
• It works if I run \Win64-571375\chrome-win32\chrome.exe --headless --disable-gpu “https://*******.com” --print-to-pdf
• It works if I run via puppeteer, see below

const puppeteer = require('puppeteer');

require('console-stamp')(console, '[HH:MM:ss.l]');

(async () => {
    console.log('Launching Browser');

  const browser = await puppeteer.launch();
  
  console.log('Opening new page');
  const page = await browser.newPage();
  console.log('Navigating to https://*******.com');
  await page.goto('https://*******.com', {waitUntil: 'networkidle2'});
  console.log('Exporting PDF');
  await page.pdf({path: 'proposal.pdf', format: 'A4'});
  console.log('Closing browser');
  await browser.close();
  console.log('Fin');
})();

I can give you the url I am testing with but would rather do that privately if possible.

Complete minimal example reproducing the issue

    class Program
    {
        static void Main( string[] args )
        {
            MainAsync( "https://*******.com",
                "c:\\temp\\test\\output.pdf",
                10 * 60 ).GetAwaiter().GetResult();
        }

        static async Task MainAsync( string url, string fullPath, int timeoutSeconds )
        {
            const int revision = 571375; 

            // Download Chromium if we don't already have it
            Console.WriteLine( $"Downloading Chromium version {revision}" );

            var downloader = new BrowserFetcher( new BrowserFetcherOptions()
            {
                Path = "c:\\temp\\test",
                Platform = Platform.Win32
            } );
            await downloader.DownloadAsync( revision );

            // Launch it
            Console.WriteLine( $"Launching Chromium version {revision}" );
            var browser = await Puppeteer.LaunchAsync( new LaunchOptions
            {
                Headless = true, // Print to PDF only works when headless (and we want headless anyway)
                ExecutablePath = downloader.GetExecutablePath( revision )
            } );

            // Navigate to the url and print to PDF
            Console.WriteLine( $"Navigating to url {url}" );
            var page = await browser.NewPageAsync();
            await page.GoToAsync( url, timeoutSeconds > 0 ? timeoutSeconds * 1000 : 0 );

            Console.WriteLine( $"Writing PDF to file {fullPath}" );
            await page.PdfAsync( fullPath );

            Console.WriteLine( $"Closing page" );
            await page.CloseAsync();

            Console.WriteLine( $"Closing Chromium" );
            await browser.CloseAsync();

            Console.WriteLine( $"Finished writing PDF to file" );
        }
    }

Expected behavior:

Export the pdf and exit

Actual behavior:

Gets are far as ‘Writing PDF to file …’ and then never completes. I can see 6 instances of chrome.exe running in task manager

Versions

PuppeteerSharp 1.2 .NET 4.6.2 Full Framework

[kblok]

Thanks for all the details @spib. I’ll take a look at it.

[kblok]

@viswa18 could you try v1.5?