async-tftp

Executor agnostic async TFTP implementation, written with smol building blocks. Currently it implements only server side.

The following RFCs are implemented:

• RFC 1350 - The TFTP Protocol (Revision 2).
• RFC 2347 - TFTP Option Extension.
• RFC 2348 - TFTP Blocksize Option.
• RFC 2349 - TFTP Timeout Interval and Transfer Size Options.

Features:

• Async implementation.
• Works with any runtime/executor.
• Serve read (RRQ) and write (WRQ) requests.
• Unlimited transfer file size (block number roll-over).
• You can set non-standard reply timeout. This is useful for faster file transfer in unstable environments.
• You can set block size limit. This is useful if you are accessing client through a VPN.
• You can implement your own Handler for more advance cases than just serving a directory. Check tftpd-targz.rs for an example.

Example

use async_tftp::server::TftpServerBuilder;
use async_tftp::Result;

fn main() -> Result<()> {
    smol::block_on(async { // or any other runtime/executor
        let tftpd = TftpServerBuilder::with_dir_ro(".")?.build().await?;
        tftpd.serve().await?;
        Ok(())
    })
}

Add in Cargo.toml:

[dependencies]
smol = "1" # or any other runtime/executor
async-tftp = "0.3"

Running examples with cargo

There are some examples included with this crate. You can run them from a source checkout with cargo:

$ cargo run --example tftpd-dir
TFTP directory: ...
Listening on: 0.0.0.0:6969
^C

$ cargo run --example tftpd-targz <archive-path>
Listening on: 0.0.0.0:6969
^C

License

MIT