Allow debugger to be attached from Inspector page in Chrome

[ono-max]

Description

Screen.Recording.2022-10-22.at.21.02.51.mov

When node.js users use Chrome DevTools debugging, they open chrome://inspect, then click the link on the page and start debugging it.

https://medium.com/@paul_irish/debugging-node-js-nightlies-with-chrome-devtools-7c4a1b95ae27

This PR supports this feature.

How to use it

1. Execute debugger as a TCP/IP debuggee. 9229 is the default port on the Inspector page in chrome.

$ rdbg target.rb -O --port 9229

2. Open chrome://inspect, then target will be shown up.

3. Click "inspect" and the window will be opened!

[ko1]

Suggested change

	when /^GET \/json\/version HTTP\/1.1/
	require 'json'
	@repl = false
	body = {
	Browser: "ruby/v#{RUBY_VERSION}",
	'Protocol-Version': "1.1"
	}
	send_http_res body
	raise RetryConnection
	when /^GET \/json HTTP\/1.1/
	require 'json'
	@repl = false
	addr = @local_addr.inspect_sockaddr
	body = [{
	description: "ruby instance",
	devtoolsFrontendUrl: "devtools://devtools/bundled/inspector.html?experiments=true&v8only=true&ws=#{addr}/#{@uuid}",
	id: @uuid,
	title: $0,
	type: "json",
	url: "file://#{File.absolute_path($0)}",
	webSocketDebuggerUrl: "ws://#{addr}/#{@uuid}"
	}]
	send_http_res body
	raise RetryConnection
	when /^GET \/#{@uuid} HTTP\/1.1/
	require_relative 'server_cdp'
	self.extend(UI_CDP)
	when /^GET \/json\/version HTTP\/1.1/, /^GET \/json HTTP\/1.1/, /^GET \/#{@uuid} HTTP\/1.1/
	require_relative 'server_cdp'
	self.extend(UI_CDP)
	self.cdp_launch g

[ko1]

load only on CDP.