A scriptable TCP + UDP endpoint you can actually watch.
Bind a port and see everything — every client, every byte, every message — then make the server answer however your client, device, lab or demo needs. No runtime, no cloud, no account. One ~6 MB binary.
Writing a client and need to see what it actually sends and gets back.
A dashboard that makes connect → send → broadcast → disconnect visible to a room.
A throwaway endpoint that logs what hit it and can be scripted to answer.
Six capability areas, all driven from one neon dashboard. Tap a card for the detail.
TCP + UDP on any bind, with newline, CRLF, 16-bit length-prefix or raw framing.
Live client roster, text/hex message stream, metrics tiles, throughput chart, syslog, instant kick.
Auto-responder with six match modes, rich templates, direct send, command protocol, token auth.
Timed template feeds, a built-in geo world-map stream, and seven one-click scenario presets.
Record a session, export/import JSONL, replay to live clients at 0.5×–full speed with original timing.
One ~6 MB binary, no runtime, 18 unit tests, MSI + NSIS installers, locked-down CSP.
Design it, stand it up here, then watch it on the wire. The observable server half of the BADWOLF network-teaching story.// pairs with Pcapsule · part of the BADWOLF MYTHOS suite
It is a single-host tool, and that focus is the point. It is not a load generator, a protocol analyser, or an API client — it's the endpoint those tools talk to, and the one place you can watch the whole exchange happen.
Windows MSI or NSIS installer, free to use. No runtime, no account, no telemetry.