Connections
Every endpoint this simulator exposes, who is connected to it, and the data moving through it right now. Nothing on this page is mocked — the counters are reported by the protocol servers themselves.
Live wire
● data refreshed by the line ● sent to clients ● received from clients
Endpoints
Live values refresh once a second.
Wire feed
Newest first. High-frequency streams are sampled so the feed stays readable; the counters above stay exact.
This page polls GET /connections/data once a second. The built-in probe makes the simulator dial its own
endpoints as a client — Modbus register reads, OPC UA node reads, an MQTT subscription, REST polls and SQL queries — so
bidirectional traffic is visible even when no external system is attached. Probe peers are labelled dfs-probe;
anything else you see connected is a real client.