Playwright OAuth Code Capture

Problem

When automating OAuth flows with Playwright, the authorization code is passed via redirect to http://localhost?code=.... If no server is listening on localhost, the page shows "localhost refused to connect" and the authorization code in the URL is lost before you can extract it.

Context / Trigger Conditions

• Automating Google OAuth, GitHub OAuth, or similar OAuth 2.0 flows
• redirect_uri is set to http://localhost (common for desktop apps)
• No local server running to receive the callback
• Browser shows "This site can't be reached" or "localhost refused to connect"
• Need to capture the authorization code from the redirect URL

Solution