socket2

socket2 0.6.4 is the rust-lang FFI wrapper over the platform socket API: Socket, SockAddr, SockRef, TcpKeepalive, plus MsgHdr/MaybeUninitSlice. Source matches upstream byte-for-byte. ~240 unsafe sites, all behind a single syscall! macro per back-end (libc on Unix/WASI, windows-sys on Windows); fd/SOCKET lifetimes delegated to libstd's OwnedFd/OwnedSocket. No filesystem, env, exec, crypto, or concurrency primitives implemented. No findings.

socket2 0.6.3 is a thin wrapper over OS socket APIs exposing the full setsockopt/getsockopt surface and low-level socket control that std::net omits. The 229 unsafe occurrences are structurally uniform: generic getsockopt/setsockopt wrappers with explicit type-safety contracts, SockAddr construction with family-checked casts, and SockRef lifetime management. All unsafe blocks carry SAFETY comments and the invariants hold on review. No findings were recorded.