sample.rb

Socket.tcp_server_sockets "127.0.0.1", 9229 do |socks|
  Socket.accept_loop(socks) do |sock, client|
    while l = sock.gets
      p l
      case l
      when /^GET \/json\/version HTTP\/1.1/
        sock.print "HTTP/1.0 200 OK\r\nContent-Type: application/json; charset=UTF-8\r\nCache-Control: no-cache\r\nContent-Length: 64\r\n\r\n{\n  \"Browser\": \"node.js/v17.0.1\",\n  \"Protocol-Version\": \"1.1\"\n} "
      when /^GET \/json HTTP\/1.1/
        sock.print "HTTP/1.0 200 OK\r\nContent-Type: application/json; charset=UTF-8\r\nCache-Control: no-cache\r\nContent-Length: 660\r\n\r\n[ {\n  \"description\": \"node.js instance\",\n  \"devtoolsFrontendUrl\": \"devtools://devtools/bundled/js_app.html?experiments=true&v8only=true&ws=127.0.0.1:9229/5e7fe95a-33c8-4035-a11a-de9f5845840a\",\n  \"devtoolsFrontendUrlCompat\": \"devtools://devtools/bundled/inspector.html?experiments=true&v8only=true&ws=127.0.0.1:9229/5e7fe95a-33c8-4035-a11a-de9f5845840a\",\n  \"faviconUrl\": \"https://nodejs.org/static/images/favicons/favicon.ico\",\n  \"id\": \"5e7fe95a-33c8-4035-a11a-de9f5845840a\",\n  \"title\": \"module.js\",\n  \"type\": \"node\",\n  \"url\": \"file:///Users/naotto/workspace/module.js\",\n  \"webSocketDebuggerUrl\": \"ws://127.0.0.1:9229/5e7fe95a-33c8-4035-a11a-de9f5845840a\"\n} ]\n\n"
      end
    end
    p 'socket closed'
    sock.close
  end
end