Bump to v1.3.0: harden updater helper for Dropbox-installed copies

v1.2's self-updater silently failed when the install folder lived
inside a Dropbox sync path. Dropbox held write locks on the existing
RemSound.exe / DLLs during the brief window between the parent exiting
and the helper script copying the new files in. The helper's robocopy
(/R:5 /W:1) gave up after 5 seconds, and the helper then
unconditionally relaunched the OLD binary — so the user saw the same
version they started with after pressing "Yes" on the install prompt,
with no visible error.

Helper script (BuildInstallScript) changes:

* Robocopy retries bumped to /R:60 /W:1 — up to 60 seconds per file.
  Dropbox lock release happens reliably within that window in
  practice.

* Robocopy exit code is captured and checked. Codes >= 8 are real
  failures. On a failure the helper writes update-failed.txt to the
  install folder with the cause + recovery steps, leaves the staging
  folder intact, and does NOT relaunch the old binary. Earlier
  versions silently relaunched the unmodified old binary, hiding the
  failure.

* Helper appends a step-by-step trace to _update-helper.log (in the
  install folder), with robocopy's own output included via /LOG+:.

* update-failed.txt, _update-helper.log, and _apply-update.cmd are
  added to the /XF exclusion list so the helper's own state files
  don't get copied to themselves on a repeat update run.

DownloadAndStageInstallAsync also clears any stale update-failed.txt
at the start of every new attempt, so a successful run leaves the
install folder clean.

readme.html "If install fails" section expanded with the new
update-failed.txt marker file behaviour and the _update-helper.log
location.

Wire format, audio pipeline, and recording feature unchanged from
v1.2 — this is updater-machinery-only.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

This commit is contained in:

Ednunp

2026-05-15 13:07:36 +01:00

co-authored by

Claude Opus 4.7

parent c59e413c1f

commit 9a5c46eecf

5 changed files with 111 additions and 33 deletions

									
										src/RemSound.App/RemSound.App.csproj
									
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				@@ -14,7 +14,7 @@

				         tag_name on the latest GitHub release; bump it on every public release. The

				         AssemblyVersion / FileVersion default to this value, and Assembly.GetName().Version

				         is what the About dialog and the updater both read. -->

				    <Version>1.2.0</Version>

				    <Version>1.3.0</Version>

				  </PropertyGroup>

				  <ItemGroup>