[BUG] Unable to upload big file on firefox.

[niyarlatotep]

Context:

• Playwright Version: 1.6.2
• Operating System: Win 10
• Node.js version: 14
• Browser: Firefox

Code Snippet

const {firefox} = require('playwright');
const path = require('path');

(async function() {
    const browser = await firefox.launch({headless: false});
    try {
        const page = await browser.newPage();
        await page.goto('https://pdf.io/compress/');
        await page.setInputFiles('#upload_button input', path.join(process.cwd(), 'big.pdf'));
    } finally {
        await browser.close();
    }
})();

Describe the bug

When I try to upload big pdf, for example this one: http://research.nhm.org/pdfs/29985/29985-001.pdf I get an error in example unable to upload file. At the same time chrome uploads file well, also small files are uploaded well on firefox but big ones don't.

[aslushnikov]

(I edited your script to include missing requires)

I unfortunately cannot reproduce - worked fine for me on both Mac OS and Windows 10 Enterprise. Any more specifics that would help reproducing this?

[niyarlatotep]

@aslushnikov I'm sorry it seems that I missed some important details. Try to comment await browser.close() and see what happens in browser window at the end of uploading process it takes some time then website says that it unable to upload file. I don't know if it website problem or not, but on chrome browser it works fine.

[JoelEinbinder]

Still working on a fix, but I can repro this on ubuntu 20.04 with firefox. It doesn't happen when I manually click the input and select the file, so something is messed up with our setInputFiles.

I get this error in the console when it fails. Very strange.

Cross-Origin Request Blocked: The Same Origin Policy disallows reading the remote resource at https://s104.123apps.com/pdf/upload/flow/. (Reason: CORS header ‘Access-Control-Allow-Origin’ missing).

It doesn't happen with the old juggler Page.setInputFiles. Only our new userland approach.

[achingbrain]

I've hit the same problem with Firefox recently - large file uploads don't work at all.

Here's a repro case with no dep on any third party service, just an echo server: https://github.com/achingbrain/playwright-ff-uploads

[niyarlatotep]

@pavelfeldman, @JoelEinbinder are there any plans to fix it?