module Excon::Utils

def port_string(datum)
  if datum[:port].nil? || (datum[:omit_default_port] && ((datum[:scheme].casecmp('http') == 0 && datum[:port] == 80) || (datum[:scheme].casecmp('https') == 0 && datum[:port] == 443)))
    ''
  else
    ':' << datum[:port].to_s
  end
end

def valid_connection_keys(datum, params = {})
  Excon::VALID_CONNECTION_KEYS
end

def valid_request_keys(datum, params = {})
  Excon::VALID_REQUEST_KEYS
end