aethersdr/AetherSDR v0.7.17.1

v0.7.17.1 — Accurate Network Diagnostics

on GitHub

Accurate Network Diagnostics

AetherSDR v0.7.17.1 replaces application-layer RTT measurement with kernel TCP stack timing, adds per-stream network diagnostics, and fixes DAX stream lifecycle management.

Improvements

Kernel TCP_INFO RTT (#455)

• RTT now read from the kernel's TCP congestion control (TCP_INFO), completely immune to Qt event loop delays
• Linux: getsockopt(TCP_INFO) → tcpi_rtt
• macOS: getsockopt(TCP_CONNECTION_INFO) → tcpi_srtt
• Windows: WSAIoctl(SIO_TCP_INFO) → RttUs
• Falls back to QElapsedTimer stopwatch if kernel call unavailable
• Fixes inflated RTT (40–200ms) that correlated with waterfall load

Per-stream Network Diagnostics (#455)

• Network Diagnostics dialog now shows per-stream-type rates: Audio, FFT, Waterfall, Meters, DAX
• Per-stream packet loss tracking with sequence error counts
• TX byte counter wired to actual UDP sends
• Matches SmartSDR's reported RX rate (77 kbps on Opus)

Packet loss accuracy (#455)

• Sequence tracking moved after ownership filter — no longer counts other clients' streams in Multi-Flex mode
• Meter broadcast packets excluded (unreliable sequence counter)
• Eliminates false 28% packet loss reports

DAX stream cleanup

• Disabling DAX now sends stream remove to the radio and unregisters streams from PanadapterStream
• Previously DAX streams persisted until app restart

Socket write flush

• flush() after write() in RadioConnection ensures ping and command packets are sent immediately

Full Changelog: v0.7.17...v0.7.17.1