FIELD: information technology.
SUBSTANCE: source and recipient use clock signals with synchronised frequencies. Messages are assigned time-to-live (TTL) values so that status information is updated in the source and deleted in the recipient when the respective time of the message timer, based on the TTL value, runs out. Accordingly, resources used for keeping status information in the recipient can be freed up after a shorter period of time. The source can repeatedly send status information to the message recipient if the relevant status information has been deleted. ID copies of the message processor guarantee at most one-time delivery if there has been inadvertent loss of memory in the message recipient. Versions of this invention can also be used for exactly one-time delivery, e.g. when TTL values are infinite and ID copies are not used.
EFFECT: provision for at most one-time delivery of messages.
50 cl, 7 dwg
