The server implemented at https://github.com/umccr/htsget-rs is a rust-only implementation of the htsget protocol.
The following is an outline of my contributions, ordered oldest to newest:
https://github.com/umccr/htsget-rs/commit/066ed6e3648d59938c1bd98556ebfa25dbfb3cf4
https://github.com/umccr/htsget-rs/commit/cf380eab5b471507808cecba1d1c868ab6fc6a3a
https://github.com/umccr/htsget-rs/commit/758e1f6b0459e2941ab58b6e8f7ab6e6a07e7c09