Files
lanspread/crates/lanspread-peer-cli
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
..

lanspread-peer-cli

Scriptable peer harness for automated LAN-spread tests. The binary starts the core peer runtime without the Tauri GUI, reads one JSON command per stdin line, and writes JSONL events, results, and errors to stdout.

Running

just peer-cli-build
just peer-cli-image
just peer-cli-run alpha

Useful flags:

  • --games-dir PATH stores local archives and installs.
  • --state-dir PATH stores the generated peer identity.
  • --fixture GAME_ID seeds a tiny archive that the fixture unpacker can install.

Fixture Game Directories

fixtures/fixture-alpha, fixtures/fixture-bravo, and fixtures/fixture-charlie are ready-to-use game directories for local CLI smoke tests. Point --games-dir at one of them to start a peer with several catalog-backed fake games. Each game includes version.ini and a real RAR archive renamed to .eti; fixture-alpha and fixture-bravo share ggoo, while fixture-bravo and fixture-charlie share cnc4.

Commands

Every command is a JSON object with cmd or command; id is optional and is echoed back on the result or error line.

{"id":"s1","cmd":"status"}
{"id":"p1","cmd":"wait-peers","count":1,"timeout_ms":5000}
{"id":"c1","cmd":"connect","addr":"127.0.0.1:34567"}
{"id":"g1","cmd":"list-games"}
{"id":"d1","cmd":"download","game_id":"fixture-one","install":true}
{"id":"i1","cmd":"install","game_id":"fixture-one"}
{"id":"u1","cmd":"uninstall","game_id":"fixture-one"}
{"id":"q1","cmd":"shutdown"}