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v0.2.1 — Live transfer rates + mDNS refresh

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@ethemdemirkaya ethemdemirkaya released this 29 May 10:49
· 9 commits to main since this release
v0.2.1
c4044b9

Polish release on top of 0.2.0. Transfers now show what's actually happening on the wire and on disk in real time, and the mDNS asymmetric-discovery bug is fixed.

LanBlaze main screen

What's new

Live per-direction rates

  • Instant MB/s (last emit interval) shown big, next to ⌀ average since the transfer started.
  • Remaining files counter and an ETA derived from the live rate.
  • Receiver only: a second inline line shows network: X · disk: Y MB/s separately. If the two numbers diverge, the slow side is obvious.

Receiver: network ↔ disk decoupling

The per-file loop used to read from TCP and write to disk in the same async task, so the two rates were always identical and the in-flight buffer was zero. The receiver now spawns a separate writer task connected to the reader by a bounded mpsc::channel<Vec<u8>>(8) (~2 MB in-flight). The reader does TCP read + blake3 + send; the writer does write_all + atomic disk counter. They drift naturally when the disk is the bottleneck.

mDNS asymmetric discovery — fixed

Bug: if device X opens first and Y opens later, Y sees X (Y sends a fresh query on join, X answers) but X often doesn't see Y because mdns-sd's built-in join announcements get lost on Wi-Fi multicast and the background re-announce interval is long.

New ↻ Refresh button next to the Manual IP toggle in Step 2. Under the hood it:

  1. Re-issues the browse query, so the daemon resends our question on the wire.
  2. Re-broadcasts our own advertisement (unregister + register).
  3. Restarts the browser thread so newly-resolved peers reach the UI.

Press it whenever a peer fails to show up; it's also fine to leave the discovery to run in the background — this is just the user-controlled nudge.

Install (Windows)

  1. Download LanBlaze_0.2.1_x64-setup.exe from the assets below.
  2. Run it. Pick your installer language, choose per-user or all-users install.
  3. On first launch allow the Windows Defender Firewall prompt — check Private networks + Allow access.

Installer is unsigned, so SmartScreen will show "Unknown publisher". Click More info → Run anyway.

VM testing (VirtualBox)

To test peer discovery and end-to-end transfers without a second physical machine:

  • VM Settings → Network → Adapter 1: Bridged Adapter with the host's Wi-Fi/Ethernet selected (NAT will not work — mDNS multicast doesn't reach the host).
  • Adapter Type: Intel PRO/1000 MT Desktop. Promiscuous: Allow All on Wi-Fi.
  • Install Windows in the VM, install this same setup.exe inside.
  • If discovery doesn't show the VM straight away, press the new ↻ Refresh button on the host side — that usually surfaces it within a second.

Changes since 0.2.0

  • feat: live per-direction rates, remaining-files counter, mdns refresh (3246106)
  • chore: bump to 0.2.1 (68a71d9)
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