SparkplugNet

SparkplugNet is a library to use the Sparkplug industrial IoT (IIoT) standard in .Net. It uses MQTTnet in the background.

Available for

• Net 8.0
• Net 9.0

Net Core and Net Framework latest and LTS versions

• https://dotnet.microsoft.com/download/dotnet

Structure

Sparkplug distinguishes between 5 different types of logical parts:

Part	Description
Primary application	The main application that needs to be always available to work with the data and store metrics.
Applications	Other applications that work with the sent data and metrics.
EoN nodes (Later only called nodes)	Logical devices that bundle data from end-of-network devices and publish their data.
MQTT enabled devices	Sensors that work as a "hybrid" version of a node and a device and publish metrics and data.
Non MQTT-enabled devices	Sensors that push data to nodes where the nodes publish their data to MQTT on their behalf.

Basic usage

For basic usage, see the How to use file or the example project.

Requirements

• MQTT broker that implements 100% of the MQTT 3.1.1 specification
• MQTT broker with QoS 0 and 1 support
• MQTT broker with retained messages support
• MQTT broker with last will and testament support
• MQTT broker with a flexible security system

Recommended brokers

• MQTTnet.Server for simple MQTT testing.
• HiveMQ CE with the Eclipse™ Sparkplug™ Technology Compatibility Kit for Sparkplug testing, following also issue #39 for more details.

Recommended clients

• MQTT.fx has a Sparkplug data decoder. The binaries for version 1.7.1 can also be taken from https://github.com/SeppPenner/mqttfx171-backup (The software is now under development by a company and requires a license for version 1.7.1+).
• mqttMultimeter for general MQTT debugging. I guess, a Sparkplug decoder could be added once this library here is up-to-date.
• MQTTExplorer for general MQTT debugging.

Supported Sparkplug standards

• Version 1.3.0 and above: Sparkplug, version 3.0, spAv1.0 (Marked as obsolete) and spBv1.0.
• Version 1.2.0 and below: Sparkplug, version 2.2, spAv1.0 and spBv1.0.

Special notes

• Version 1.3.4 renames all events from SomethingAsync to Something. (BREAKING)
• Version 1.1.0 introduces the async event pattern and deprecates the "old, synchronous" events, Version 1.2.0+ will remove the old events completely. (BREAKING)
• You can enable the global setting SparkplugGlobals.UseStrictIdentifierChecking which prevents users from using the following chars in identifiers:

.,\@#$%^&*()[]{}|!`~:;'"<>?

Further resources

• https://www.eclipse.org/tahu/spec/Sparkplug%20Topic%20Namespace%20and%20State%20ManagementV2.2-with%20appendix%20B%20format%20-%20Eclipse.pdf
• https://documents.opto22.com/2357_Industrial_Strength_MQTT_Sparkplug_B.pdf
• https://github.com/eclipse/tahu
• https://github.com/eclipse/kura/blob/develop/kura/org.eclipse.kura.core.cloud/src/main/protobuf/kurapayload.proto
• https://github.com/eclipse/tahu/blob/master/sparkplug_b/sparkplug_b_c_sharp.proto
• https://protogen.marcgravell.com/
• https://stackoverflow.com/questions/66199386/protobuf-net-how-to-use-the-any-data-type
• http://www.steves-internet-guide.com/spsparkplug-payloads-and-messages/

Change history

See the Changelog.

Contributors ✨

Thanks goes to these wonderful people (emoji key):

HansM 💻 📖 💡 🚧 📆 ⚠️	insightdocs ⚠️	OffTravel 💻 ⚠️	cjmurph 💻 ⚠️	Bo Biene 💻 ⚠️	Tim Jöhnk 💻	Patrick.GK 💻 ⚠️ 🚇
Gerald Asp ⚠️ 💻	adityashahazilen ⚠️ 💻	shouidar ⚠️ 💻

This project follows the all-contributors specification. Contributions of any kind welcome!