Patent ID: 9591058
Date: 2017-03-07
CPC Classifications: H04L

Claim:
1. A method for transfer of a file from a sender to at least one recipient connected to the sender via a computer network, the method comprising: creating, by the at least one recipient, a bitmap including a plurality of bits, wherein each of the bits in the bitmap is initially set to a value of 1; receiving, by the at least one recipient, one or more packets of the file sent by the sender via the computer network; determining, by the at least one recipient, for each of the one or more received packets, whether a received packet is a close packet by analyzing a packet type included in the received packet; clearing, by the at least one recipient, in a case the received packet is not a close packet, a bit in the bitmap to a value of 0, for the received packet; and in a case the received packet is a close packet,