ddidderr 8a9f420a06 test(peer-cli): measure single-source download throughput
Add peer-cli accounting for download sessions so terminal download events
report bytes, chunks, elapsed time, MiB/s, and Mbit/s. The extended scenario
runner now has S37, a focused single-source download benchmark that creates a
2 GiB sparse bf1942 archive, downloads it from one peer with install disabled,
and checks the destination archive size and reported byte count.

This gives the QUIC performance work a repeatable measurement below the 5 GiB
limit from the original request. The source file is sparse, so S37 is aimed at
the app, QUIC, and destination-write path rather than raw source-disk reads;
the existing correctness scenarios still cover normal game downloads.

Baseline S37 before QUIC tuning:
- 733.22 MiB/s
- 6150.72 Mbit/s
- 2.793s for 2.00 GiB plus version.ini
- 65 reported chunks

Test Plan:
- just fmt
- python3 crates/lanspread-peer-cli/scripts/run_extended_scenarios.py S37 --build-image

Refs: local LAN download performance investigation on 2026-05-20.
2026-05-20 20:26:58 +02:00
2025-08-27 21:21:01 +02:00
2026-05-17 07:54:12 +02:00
2026-05-17 23:16:42 +02:00
2026-05-18 16:19:27 +02:00
2026-05-18 16:19:27 +02:00

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
S
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