Go TFTP client
This is a very simple implementation of a TFTP server. TFTP is a very simple protocol to transfer files. It is from this that the name comes, Trivial File Transfer Protocol or TFTP.
TFTP is defined in RFC 1350
-addr string
Server address (default "localhost:69")
-file string
Name of the file on server (default "<filename>")
-mode string
Transfer mode: 'octet' or 'netascii' (default "octet")
-op string
What to do: download or upload file (default "<get|put>")
-path string
Local file path (default ".")
-addr is the address/port that the system will connect to.
-file is the filename to be transferred
-mode is the mode using either ascii or octer (formerly binary) reference in Section 1 Paragraph 2 of RFC 1350 linked above.
-op is the transfer mode get downloads, put uploads
-path is the directory where the files that need to be transferred are stored.
We want to download a firmware image for a router. The file is called newfirmware.bin and we are going to store it in our downloads folder. Our computer and user has the permissions to run on privileged ports (<1024).
Change directory to where the file is to be stored.
cd downloads
List the files to make sure the file is stored.
ls -l
total 0
Download the file from the tftp server.
gotftp -addr tftpserver:1069 -file newfirmware.bin -op get
1678336 bytes recieved
When the client downloads the file we can that the transfer happened.