class Selenium::WebDriver::Remote::Http::Common

def call(verb, url, command_hash)
  url      = server_url.merge(url) unless url.is_a?(URI)
  headers  = DEFAULT_HEADERS.dup
  headers['Cache-Control'] = 'no-cache' if verb == :get
  if command_hash
    payload                   = JSON.generate(command_hash)
    headers['Content-Type']   = "#{CONTENT_TYPE}; charset=utf-8"
    headers['Content-Length'] = payload.bytesize.to_s if [:post, :put].include?(verb)
    WebDriver.logger.info("   >>> #{url} | #{payload}")
    WebDriver.logger.debug("     > #{headers.inspect}")
  elsif verb == :post
    payload = '{}'
    headers['Content-Length'] = '2'
  end
  request verb, url, headers, payload
end

def close
  # hook for subclasses - will be called on Driver#quit
end

def create_response(code, body, content_type)
  code = code.to_i
  body = body.to_s.strip
  content_type = content_type.to_s
  WebDriver.logger.info("<- #{body}")
  if content_type.include? CONTENT_TYPE
    raise Error::WebDriverError, "empty body: #{content_type.inspect} (#{code})\n#{body}" if body.empty?
    Response.new(code, JSON.parse(body))
  elsif code == 204
    Response.new(code)
  else
    msg = "unexpected response, code=#{code}, content-type=#{content_type.inspect}"
    msg << "\n#{body}" unless body.empty?
    raise Error::WebDriverError, msg
  end
end

def initialize
  @timeout = nil
end

def quit_errors
  [IOError]
end

def request(*)
  raise NotImplementedError, 'subclass responsibility'
end

def server_url
  return @server_url if @server_url
  raise Error::WebDriverError, 'server_url not set'
end