Porting Legacy Network Protocols from C to Rust

Modernizing low-level network software is increasingly driven by safety and maintainability constraints rather than feature expansion. This case outlines how a VNC protocol implementation was incrementally ported from C to Rust, focusing on memory safety, concurrency control, and interoperability through FFI. It details how critical components were rewritten while preserving compatibility with existing systems and performance expectations. Technology leaders should view this as a pattern for de-risking legacy codebases without full rewrites.