UserAgent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36

Steps to reproduce the problem:
1. Close all open Chrome windows and start with a new window, without opening Dev Tools.

2. Enter this URL into the address bar:

chrome-devtools://devtools/bundled/js_app.html?experiments=true&v8only=true&wss=hostname:9229/088b3957-ca0b-4694-bc46-e4f73a3369bf

What is the expected behavior?
The expected behavior would be for Dev Tools to display and attempt a connection to the V8 host via wss://.

What went wrong?
Instead of attempting a connection, an error screen is displayed. The error code is ERR_INVALID_URL, screenshot is attached.

Did this work before? N/A 

Chrome version: 70.0.3538.77  Channel: stable
OS Version: 10.0
Flash Version: 

I'm using wss:// to connect via a reverse proxy. 

I found that if you press F12 to open dev tools before trying the above URL then it works as expected -- the debug tools display, Chrome makes a connection via wss:// and everything works fine.

The problem is just the ERR_INVALID_URL when 'wss' is in the query string and dev tools are not already open. This is causing much confusion for my end users, because the problem/solution are not at all clear.
 

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