Experiments with a Simple File Transfer Protocol for Radio Links using Enhanced Trivial File Transfer Protocol (ETFTP)

This document is a description of the Enhanced Trivial File Transfer Protocol (ETFTP). This protocol is an experimental implementation of the NETwork BLock Transfer Protocol (NETBLT), RFC 998 [1], as a file transfer application program. It uses the User Datagram Protocol (UDP), RFC 768 [2], as its transport layer. The two protocols are layered to create the ETFTP client server application. The ETFTP program is named after Trivial File Transfer Protocol (TFTP), RFC 1350 [3], because the source code from TFTP is used as the building blocks for the ETFTP program. This implementation also builds on but differs from the work done by the National Imagery Transmission Format Standard [4].