class Net::SSH::Connection::Session

def global_request(packet)

reply returned.
request callback will be invoked, if one exists, and the necessary
Invoked when a global request is received. The registered global 
def global_request(packet)
  info { "global request received: #{packet[:request_type]} #{packet[:want_reply]}" }
  callback = @on_global_request[packet[:request_type]]
  result = callback ? callback.call(packet[:request_data], packet[:want_reply]) : false
  if result != :sent && result != true && result != false
    raise "expected global request handler for `#{packet[:request_type]}' to return true, false, or :sent, but got #{result.inspect}"
  end
  if packet[:want_reply] && result != :sent
    msg = Buffer.from(:byte, result ? REQUEST_SUCCESS : REQUEST_FAILURE)
    send_message(msg)
  end
end