Status of this Memo

This document specifies an Internet standards track protocol for the Internet community, and requests discussion and suggestions for improvements. Please refer to the current edition of the "Internet Official Protocol Standards" (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited.

Copyright Notice

Copyright (C) The Internet Society (1998). All Rights Reserved.

Abstract

The Trivial File Transfer Protocol [1] is a simple, lock-step, file transfer protocol which allows a client to get or put a file onto a remote host.

This document describes two TFTP options. The first allows the client and server to negotiate the Timeout Interval. The second allows the side receiving the file to determine the ultimate size of the transfer before it begins. The TFTP Option Extension mechanism is described in [2].

Timeout Interval Option Specification

The TFTP Read Request or Write Request packet is modified to include the timeout option as follows:

   +-------+---~~---+---+---~~---+---+---~~---+---+---~~---+---+     opc  filename 0   mode   0  timeout 0   #secs  0    +-------+---~~---+---+---~~---+---+---~~---+---+---~~---+---+

• opc

  • The opcode field contains either a 1, for Read Requests, or 2, for Write Requests, as defined in [1].

• filename

  • The name of the file to be read or written, as defined in [1]. This is...