MCP Oauth: Default auth strategy does not redirect on Ubuntu 22.04

[joshspicer]

Testing #250319

I'm running a pretty default Ubuntu 22.04 VM. The default auth redirect strategy did not get picked up by Insiders. The local loopback server did.

video:

Screen.Recording.2025-06-03.at.11.46.47.AM.mov

[TylerLeonhardt]

@joshspicer how did you install this VS Code instance?

[joshspicer]

I installed the .deb from the website and dpkg -i <.deb>. I then launch with code-insiders

[TylerLeonhardt]

I'm gonna be defensive here for the release and just use the loopback server... esp since @rzhao271 was also having issues with the loopback flow on macOS.

But it's unusual... @rzhao271 I thought the deb installed the protocol handler to handle vscode-insiders://.. can you confirm that?

As for why it wasn't working on macOS, I'm surprised. That protocol handler should be available...

So I wonder if I have a timing bug... where the url handler isn't being registered correctly/in a timely manner.

[rzhao271]

@TylerLeonhardt I don't think the Debian package post-install script registers the vscode:// handler. I spotted the following line, but I think it is back in your area.

vscode/extensions/github-authentication/src/githubServer.ts

Line 209 in 921786b

return vscode.Uri.parse(`${apiUri.scheme}://api.${apiUri.authority}`).with({ path });