feat(client): add Windows route snapshot helper

Add `lanparty-client-route` as the Win32 boundary for route-table work. The
first API is intentionally read-only: `best_route_to` wraps `GetBestRoute2`
and returns the selected source address, next hop, route prefix, interface
index/LUID, and route metric for a relay destination IP.

This keeps the route-protection work separate from the QUIC client binary, so
we can typecheck the Windows IP Helper calls on this Linux host without pulling
in the `ring` build path that currently blocks full Windows binary checks.
Actual route pinning and metric mutation remain later slices.

Test Plan:
- cargo fmt --check
- cargo test --workspace
- cargo clippy --workspace --all-targets -- -D warnings
- cargo check -p lanparty-client-route --target x86_64-pc-windows-msvc
- cargo clippy -p lanparty-client-route --target x86_64-pc-windows-msvc -- -D warnings
- git diff --check

Refs: PLAN.md

This commit is contained in:

ddidderr

2026-05-21 19:06:55 +02:00

parent 89989c195a

commit 5001f3c35c

6 changed files with 297 additions and 0 deletions

									
										Cargo.toml
									
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				@@ -2,6 +2,7 @@

				resolver = "3"

				members = [

				  "crates/lanparty-client-core",

				  "crates/lanparty-client-route",

				  "crates/lanparty-client-tap",

				  "crates/lanparty-client-win",

				  "crates/lanparty-ctrl",