TCP works very hard to get the data delivered in order without errors and does retransmissions and recoveries and all that kind of stuff which is exactly what you want in a file transfer because so you don't want any errors in your file.

His obituary was written by Vint Cerf and publiJon Posteld as RFC 2468 in remembrance of Postel and his work. He is known principally for being the Editor of the Request for Comment (RFC) document series and for administering the Internet Assigned Numbers Authority (IANA) until his death.