title: unexpected server response (400)
body: <p>I am trying to set up VSCode for debugging with Edge, according to <a href="https://github.com/Microsoft/vscode-edge-debug" rel="nofollow noreferrer">here</a> , however,although I installed VSCode extension: Debugger for Edge. And the Launch.json file in VSCode is like below:</p>
  
  <pre><code>{
  // Use IntelliSense to learn about possible Node.js debug attributes.
  // Hover to view descriptions of existing attributes.
  // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
  "version": "0.2.0",
  "configurations": [       
      {
          "type": "edge",
          "request": "launch",
          "name": "Launch Program",
          "url": "http://localhost:4200",
          "webRoot": "${workspaceRoot}/",
          "sourceMaps": true
      }
      ,
      {
          "name": "attach to my-app",
          "type": "edge",
          "request": "attach",            
          "port": 9222,
          "url": "http://localhost:4200/",
          "webRoot": "${workspaceRoot}/",
          "diagnosticLogging": true
      }
  ]
  }
  </code></pre>
  
  <p>I am launching the VSCode debugger from "attach to my-app" option above. The my-app project is an Angular2 QuickStart example you can find on <a href="https://angular.io/guide/quickstart" rel="nofollow noreferrer">this page</a> with the <a href="https://angular.io/generated/zips/cli-quickstart/cli-quickstart.zip" rel="nofollow noreferrer">code here</a>. I always met "[debugger-for-chrome] unexpected server response(400)" showing in VSCode. </p>
  
  <p>If you have any idea on using VSCode debugging Angular2/typescript project, you are welcome to leave comment.</p>