Wiktionary
resending
n. Act of sending something again. vb. (present participle of resend English)
Usage examples of "resending".
TCP (the "transmission control protocol") is responsible for breaking up the message into datagrams, reassembling them at the other end, resending anything that gets lost, and putting things back in the right order.
It also makes sure that the data arrives, resending datagrams where necessary.