StudyBroker: a demo for Inside the Broker

This is the dashboard for the study broker from the book Inside the Broker by Charles Vance. Here it is driven by a simulated broker running in your browser: an edge node, a primary host, a member's client and the Sparkplug tap, all talking MQTT 3.1.1 and Sparkplug B, with every packet in the trace in the book's own format. Nothing connects to a real broker, and reloading the page starts it over.

Watch every packetTrace: filter, pause, click a line for its fieldsCh 2, 3
How connections endClients: Kick one and watch its will fire; Labs: Connection endingsCh 4, 6
Topics and retained messagesTopics: test a filter, publish, clear a retained messageCh 5, 6
Births, deaths, bdSeq and seqSparkplug, and the tap events beside itCh 9 to 11
Breaking it on purposeLabs: run the Chapter 19 presets; Faults: turn the knobsCh 17, 19
Traffic at a glanceDiagnostics: every packet colored by kind, and the wire drawn as a ladderCh 3, 7, 16

Good first step: Labs, Lab 1, Run preset, then open Sparkplug and Diagnostics. Write your prediction in the Notebook first, the way Chapter 19 asks.

The book's real broker, edge node and host are at github.com/cbvance/InsideTheBroker.