j.foucher
9bdcdabb9e
This is the robustness layer needed for real 14 GB builds. A 99%-complete
download that gets interrupted no longer means re-downloading 14 GB.
DownloadManager
---------------
- Range: bytes={resumeFrom}- on every (re)attempt; reads resumeFrom from
the actual size of the .partial file so retries always resume from real
on-disk state, not from a remembered counter.
- If-Range: ETag (or Last-Modified fallback). When the server returns 200
instead of 206 we know the resource changed under us, so we discard
.partial and start fresh.
- Polly resilience pipeline: 6 retries, exponential 1-32s with jitter,
on HttpRequestException / IOException / TimeoutException / 5xx / 408 /
429. Each retry re-evaluates resumeFrom from disk, so the server is
asked only for what's actually missing.
- state.json persisted every 5s OR every 100 MiB, whichever comes first,
via atomic write-then-rename. Holds url, total, downloaded, sha256,
etag, last-modified, and the .partial path.
- Disk-space check happens once at fresh-start (1.05x expected size); a
resume doesn't redo it.
- On final success: SHA-256 of the assembled .partial verified, then
atomic rename to .zip and state.json deleted.
DownloadStateStore
------------------
- New IDownloadStateStore in PSLauncher.Core/Downloads.
- Stores under %LocalAppData%/PSLauncher/downloads/.
- Save / Load / Discard / ScanResumable. Tolerates malformed state files
by ignoring them.
UI hint
-------
VersionRowViewModel now has ResumableBytes; when > 0, the install button
label switches to "↻ Reprendre (X%)" computed from
ResumableBytes / Remote.Download.SizeBytes. MainViewModel.RebuildList
queries IDownloadManager.GetResumableState(version) for each remote-only
row and populates ResumableBytes. Both the featured hero card and the
compact rows bind to InstallButtonLabel.
API change
----------
IDownloadManager gains GetResumableState(version) and
DiscardResumableState(version) so callers (and the UI) can reason about
in-progress downloads without poking at the filesystem directly.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
PS_Launcher
Launcher Windows pour l'application UE5 PROSERVE : gère plusieurs versions cohabitantes, téléchargement et installation de nouvelles versions depuis un serveur, validation de license, release notes.
Composants
src/— Solution C# / .NET 8 / WPF (Visual Studio 2022 + SDK .NET 8 requis)PSLauncher.App: UI WPF (style Epic Games Launcher)PSLauncher.Core: services (Manifest, Download, Install, Process…)PSLauncher.Models: DTOs partagés
server/— Code serveur PHP 8 (à déployer souswww/PS_Launcher/sur OVH mutualisé)
Démarrage rapide (dev)
dotnet build PS_Launcher.sln
dotnet run --project src/PSLauncher.App
Pour produire un binaire autonome distribuable (un seul .exe ~70 Mo) :
dotnet publish src/PSLauncher.App -c Release
# Sortie : src/PSLauncher.App/bin/Release/net8.0-windows/win-x64/publish/PSLauncher.exe
Configuration locale
Le launcher écrit sa config dans %LocalAppData%\PSLauncher\config.json au premier lancement.
Édite serverBaseUrl pour pointer vers ton serveur :
{
"serverBaseUrl": "https://ton-domaine.com/PS_Launcher/api",
"installRoot": "C:\\ASTERION\\GIT\\PS_Launcher\\ASTERION_VR"
}
État (roadmap)
- ✅ v0.1 — Scan + lancement de versions installées
- ✅ v0.2 — Manifest distant, download ZIP, install cohabitante, release notes Markdown
- ⏳ v0.3 — Reprise (HTTP Range), retry Polly, state.json
- ⏳ v0.4 — License (MySQL + Ed25519 + DPAPI)
- ⏳ v0.5 — Settings, suppression manuelle versions, toasts
- ⏳ v1.0 — Auto-update launcher, MSI installer
Voir le plan détaillé pour la roadmap complète.
Licence / interne
Repo interne ASTERION. Ne pas distribuer.