AetherBus

AetherBus is a modern, lightweight, open-source serial-port interceptor, protocol sniffer, and SocketCAN bus analyzer for Linux, built on Qt 6 and C++17.

It transparently proxies a physical UART through a kernel pseudo-terminal, so an unmodified target application keeps talking to the device while AetherBus captures, decodes, and injects every byte in real time — like interceptty wired to a live diagnostic console. An independent SocketCAN session type adds a candump/cansend-equivalent CAN bus analyzer in its own tab, alongside serial sessions.

Key Features:

• Transparent Interception: Opens the real device and exposes a virtual port (pseudo-terminal) the target application connects to instead, mirroring all traffic.
• Directional Capture: A POSIX poll() multiplexing loop tags every chunk as Rx (from the device) or Tx (from the application), timestamped to the millisecond.
• Live Console: Side-by-side HEX / ASCII / BINARY / DECIMAL views, colour-coded by direction, batch-rendered at 60 Hz for high-baud streams.
• Live Byte Injection: Send crafted hex byte sequences directly to either the device or the application side of the link.
• SocketCAN Bus Analysis: A candump/cansend-equivalent CAN session with a live per-ID sniffer table, structured ID/mask filters, CAN-FD, and DBC-driven signal decoding.

Perfect for: reverse-engineering serial protocols, debugging embedded firmware links, man-in-the-middle diagnostics of UART traffic, and SocketCAN bus analysis.