General Information
The start/1 function starts
a daemon process listening for UDP packets on a port. When it
receives a request for read or write, it spawns a temporary server
process handling the transfer.
On the client side,
function read_file/3
and write_file/3
spawn a temporary client process establishing
contact with a TFTP daemon and perform the file transfer.
tftp uses a callback module to handle the file
transfer. Two such callback modules are provided,
tftp_binary and tftp_file. See
read_file/3 and
write_file/3 for details.
You can also implement your own callback modules, see
CALLBACK FUNCTIONS.
A callback module provided by
the user is registered using option callback, see
DATA TYPES.
Using the TFTP client and server
This is a simple example of starting the TFTP server and reading the content
of a sample file using the TFTP client.
Step 1. Create a sample file to be used for the transfer:
$ echo "Erlang/OTP 21" > file.txt
Step 2. Start the TFTP server:
1> {ok, Pid} = tftp:start([{port, 19999}]).
}]]>
Step 3. Start the TFTP client (in another shell):
1> tftp:read_file("file.txt", binary, [{port, 19999}]).
>}]]>