Thank you. I'm still improving and studying better the negentropy protocol. 
I converted the code from C++ to Rust in basically a day and half (I'm not a C++ dev so some thing could be converted badly) and are there some things to fix/improve.
Like, I noticed an unstable performance with reconcilie_with_ids method with a set of 50000 items: it usually took 600 ms the final reconciliation but often it took 2 or 4 secs (executing exactly the same code).

Thanks, I'll replace the String with a vector.

BTW, I'm planning to release also bindings for some languages (Kotlin, Swift and Python) using UniFFI, like I have done for rust-nostr libraries.