ddidderr
348a02c35f
Peers discovered over mDNS could still attribute later library sync traffic to temporary QUIC source ports. In a real GUI LAN run this made Host B try to push its library to Host A's outbound port instead of Host A's advertised listener, so Host A discovered the peer but never saw its games. Carry the stable listener address in Hello and HelloAck, and key library sync messages by peer_id instead of inferring identity from the transport source address. The handshake path now explicitly refreshes an empty peer library from the known listener address, matching the reliability of the direct-connect CLI path without overwriting richer snapshot state when it already arrived. This changes the current wire protocol, so PROTOCOL_VERSION is bumped to 3 and all peers must be rebuilt together. The architecture note now documents that listener addresses come from mDNS or Hello/HelloAck, never from ephemeral QUIC source ports. Test Plan: - just fmt - just test - just clippy - just build - git diff --check Refs: Local Linux/Win11 GUI LAN test logs from 2026-05-18.
lanspread
Description
Peer-to-peer game library sharing for LAN parties.
- Peers let users browse and download games from each other
- they discover each other on the local network via mDNS
- they exchange library metadata over QUIC
Ships as a Tauri desktop app.
Development
Prerequisites
# install Tauri CLI
cargo install tauri-cli
# install Deno with a package manager or from https://deno.land/
Build or Run
# build
just build
# run
just run
# test
just test
Scripted peer harness
crates/lanspread-peer-cli runs the peer runtime without the GUI and speaks
JSONL on stdin/stdout. It is intended for automated multi-peer smoke tests.
just peer-cli-build
just peer-cli-image
just peer-cli-run alpha