class ActionDispatch::Integration::Session

def reset!

session.reset!

condition.
in an existing session instance, so it can be used from a clean-slate
Resets the instance. This can be used to reset the state information 
def reset!
  @https = false
  @controller = @request = @response = nil
  @_mock_session = nil
  @request_count = 0
  @url_options = nil
  self.host        = DEFAULT_HOST
  self.remote_addr = "127.0.0.1"
  self.accept      = "text/xml,application/xml,application/xhtml+xml," \
                     "text/html;q=0.9,text/plain;q=0.8,image/png," \
                     "*/*;q=0.5"
  unless defined? @named_routes_configured
    # the helpers are made protected by default--we make them public for
    # easier access during testing and troubleshooting.
    @named_routes_configured = true
  end
end