class DEBUGGER__::UI_CDP::WebSocketServer

def handshake
  req = @sock.readpartial 4096
  show_protocol '>', req
  if req.match /^Sec-WebSocket-Key: (.*)\r\n/
    accept = Base64.strict_encode64 Digest::SHA1.digest "#{$1}258EAFA5-E914-47DA-95CA-C5AB0DC85B11"
    res = "HTTP/1.1 101 Switching Protocols\r\nUpgrade: websocket\r\nConnection: Upgrade\r\nSec-WebSocket-Accept: #{accept}\r\n\r\n"
    @sock.print res
    show_protocol :<, res
  else
    "Unknown request: #{req}"
  end
end