CORS settings for IIS 10

[froduit]

What version of WebTorrent?
Last version from Webtorrent CDN
What operating system and Node.js version?
Windows Server 2016 (IIS 10)
What browser and version? (if using WebTorrent in the browser)
Firefox, Safari, Chrome and Edge
What did you expect to happen?
Expected to stream a .mp4 video within html5 player ; Video only loads on google chrome.
What actually happened?
I suspect a server misconfiguration for the cross origin resource sharing. The video plays after a couple of seconds on chrome, but will load forever with Firefox, Safari or Microsoft Edge. No error is displayed in the console though.

Right now the Range, Content-Type headers are allowed, the GET, POST, HEAD, OPTIONS methods, and everything (*) for the Access-Control-Allow-Origin.
The web.config file which enable CORS on IIS 10 looks like this :

<?xml version="1.0" encoding="UTF-8"?>
<configuration>
    <system.webServer>
        <cors enabled="true">
        <add origin="https://webtorrent.io" allowCredentials="true" maxAge="600">
        </add>
        </cors>
        <httpProtocol>
            <customHeaders>
                <add name="Access-Control-Allow-Headers" value="Range, Content-Type" />
                <add name="Access-Control-Allow-Methods" value="GET, POST, HEAD, OPTIONS" />
            </customHeaders>
        </httpProtocol>
        <directoryBrowse enabled="false" />
    </system.webServer>
</configuration>

I don't know what I am missing. I use a webseed (ws) and exact seed (xs), and once the video has begun on chrome, I am able to also play it on firefox !

This is not a webtorrent issue it's mine and I am not an expert. But please, can you help me to sort this out for IIS 10 ?

Regards,

[feross]

You might want to try using the version of webtorrent hosted on the latest jsdelivr URL: https://cdn.jsdelivr.net/npm/webtorrent@latest/webtorrent.min.js

There is another deprecated URL that no longer updates and is stuck on 0.98.18 of WebTorrent.