Dynamically webview resources fail to load in some browser/OS combinations

Hi, I have two issues, they may all be related to https certificates.

• One is code-server prompt can‘t register serviceworker error
• The other is that I can’t load resources dynamically on my expansion webview.

I run code-server --host 0.0.0.0 --port 8223 --cert in docker ubuntu:20.04, and expose 8223 in my Windows 10 host, but I get an ssl error when I open a exntesion webview in code-server in my company.

when I use Chrome command line “–ignore-certificate-errors”, my extension webview can’t dynamic loading of resources(eg. js, css), which cause the page style confusion, the Chrome dev tool network display the resource keep pending until it fails.

At first, I thought it was the invalid certificate problem，but even if I use a valid certificate, I still can’t dynamic loading resources.(Without any certificate errors and any Chrome command line options)

I use something like this to dynamic loading resources

  function addCss(path, callback) {
      if(!checkcache(path)) { /*Check if it has been loaded*/
          var head = dom.getElementsByTagName('head')[0];
          var link = dom.createElement('link');
          link.href = path;
          link.rel = 'stylesheet';
          link.type = 'text/css';
          head.appendChild(link); /*Add to HTML*/
          link.onload = link.onreadystatechange = function() { /*whether the loading is successful*/
              if(!this.readyState || this.readyState === "loaded" || this.readyState === "complete") {
                  link.onload = link.onreadystatechange = null;
                  callback();
              }
          };
          cache[path] = 1; /*Store loaded paths*/
      }
  };

–>

OS/Web Information

• Web Browser: Chrome 90.0.4430.212 64bit
• Local OS: Windows 10
• Remote OS: ubuntu:20.04 (docker)
• Remote Architecture: x86
• code-server --version: 3.9.0

Steps to Reproduce

1. installl code-server 3.9.0 in docker ubuntu:20.04
2. code-server --host 0.0.0.0 --port 8223 --cert
3. enter localhost:8888 and open my extension webview

Expected

No error.

Actual

get an error in bottom right corner:

Error loading webview: Could not register service workers: SecurityError: Failed to register a ServiceWorker for scope ('https://localhost:8223/webview/') with script ('https://localhost:8223/webview/service-worker.js'): An SSL certificate error occurred when fetching the script.

Screenshot

[mmitkevich]

I had similar problem with latest release 3.10, had to downgrade to 3.8. OSX/Chrome 91.0.4472.114

[code-asher]

Thank you for the info! I was able to replicate on Firefox and code-server 3.12.0.