tftp_client

A pure-rust TFTP client library

There are several TFTP crates in the rust ecosystem:

• tftp
• async-tftp
• tftp_server
• libtftp
• tftp-ro
• rtftp

All but the last only implement the server side. The last library seems focused on reimplementing the tftp applications, not so much focused on the rust library.
Additionally, it is not as robust as the Python tftpy library.

This library, tftp-client implements only the client as per RFC 1350, including the fix for the "sorcerer's apprentice syndrome".
Currently the library doesn't implement any of the additional options, but provides robust control over how timeouts are handled.

Unlike rtftp, retries include exponential backoff (with an upper limit) and have inner and outer retries for block-level and transfer level attempts.