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SlowMo prevents the page from loading

See original GitHub issue

Description

As soon as SlowMo = 100 is used the page is not loading at all anymore.

Complete minimal example reproducing the issue

using (Browser browser = await Puppeteer.LaunchAsync(new LaunchOptions
            {
                Headless = false,
                Args =  new[] { "--no-sandbox", "--disable-setuid-sandbox" },
                SlowMo = 100
            }))
await page.EvaluateOnNewDocumentAsync(setIsServer);
                        await page.SetRequestInterceptionAsync(true);
                        page.Request += (sender, e) =>
                        {
                            string resType = e.Request.ResourceType.ToString();
                            if (resType == "Image" || resType == "Font")
                            {
                                e.Request.AbortAsync();
                            } else
                            {
                                e.Request.ContinueAsync();
                            }
                        };
string content = await page.GetContentAsync();

Expected behavior:

That the site loads but just with the SlowMo functionality.

Actual behavior:

The site does not render at all.

Versions

PuppeteerSharp 1.8.0
.NET core 2.1

Issue Analytics

State:
Created 5 years ago
Comments:6 (4 by maintainers)

Top GitHub Comments

1reaction

ismaeldcomcommented, Apr 10, 2019

I was going to open a new issue but I think it’s the same problem.

Description

The test in b5dd5aa859825570ef64397e4d2459766e674118 passes well but if you do something more advanced it always fails.

Example

LaunchOptions options = new LaunchOptions {
    Headless = false,
    SlowMo = 100
};
using (Browser browser = await Puppeteer.LaunchAsync(options))
using (Page page = await browser.NewPageAsync()) {
    await page.GoToAsync("https://duckduckgo.com/");
    ElementHandle input = await page.WaitForSelectorAsync("#search_form_input_homepage");
    await input.TypeAsync("Lorem ipsum dolor sit amet.");
}

Expected behavior:

Load duckduckgo and type with delay.

Actual behavior:

The next two errors randomly PuppeteerSharp.NavigationException: 'Navigation failed because browser has disconnected! PuppeteerSharp.WaitTaskTimeoutException: 'waiting for selector '#search_form_input_homepage' failed