A simple implementation of a TFTP client. Supports both OCTET and NETASCII modes.

Requirements : Linux, gcc

Compiling

• Run ./compile.sh and check if the executable client is produced.
• If permissions are denied, run sudo chmod +x compile.sh and repeat step 1.

How to Run ?

• Run ./client -h to see the usage instructions. Here's how it looks

Usage:

client [-h] [type] [filepath] [hostname] [port]

-h	Shows this usage instructions

Type:

-ra	Requests a read in NETASCII mode
-ro	Requests a read in OCTET Mode
-wa	Requests a write in NETASCII mode
-wo	Requests a write in OCTET mode

filepath	Path to file to read or write
hostname	IP Address or hostname
port		Optional.Default is 69

Source Documentation

1) All the source files related to different packet types are in ./types folder.

./TYPES:

error_packet.h  ----- Contains the constants for each error packet type.
error_packet.c  ----- Contains the functions for handling error packets.
request_packet.h ---- Contains the constants for request packets(Both Read and Write requests and both NETASCII and OCTET mode).
request_packet.c ---- Contains the functions for handling request packets.
ack.c           ----- Contains the constants, functions for handling acknowledgement packets.
data_packet.c   ----- Contains the constants, functions for handling data packets.

2) All the source files related to the actual client are in . folder.

.:

packet.h         --- Contains the packet structure, constants and declarations of functions for packet handling.
packet.c         --- Contains definitions of functions for packet handling.
client.c         --- Contains the actual client handling functions.
main.c           --- Contains code that checks for correct arguments and call start_client().