allenap's TFTP library for Rust

This library will let you build a read-only TFTP server in Rust with the following features:

• 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

• blkno rollover, allowing tranfers of unlimited size.

The places to start are the top-level serve function, the Handler trait, and the rrq.serve function.

The intent is to support writable servers, and clients. The code is alpha level right now, and given time I would change quite a lot, but for now this works.

Thanks

I learned a lot from reading the code in Arjan Topolovec's rust-tftp. In an ideal world I would have instead contributed back to that, and I may yet do that, but I started on this project as a way to learn Rust.

I've read a lot of material about Rust and a lot of Rust code, but writing code has been the best way to internalise that knowledge, and to find out what I thought I knew but didn't. Starting from scratch with rust-tftp as a guide has worked well for me.

Thank you Arjan Topolovec.

To do

• Fix the layering violation used to efficiently construct outgoing DATA packets.

• Wait for ACK after sending OACK.

• Support the windowsize option; see RFC-7440.

• More unit tests.

• Some integration tests.

• Clean-ups, refactorings, and so on: it's kind of rough-n-ready right now.