FIELD: information technologies.
SUBSTANCE: set of files is received during multicast transfer with active delivery from a sender; received files are communicated to a server; an identifier of the second receiver, which owns the missing file that is not contained in the specified received set of files, is received from the specified server; and repeatedly the specified missing file is received from the specified second receiver in the mode of efficient delivery using a peer-to-peer mechanism.
EFFECT: optimised load of exchange traffic in a network.
11 cl, 5 dwg
