MQTT Support

Courier Go supports MQTT v3.1.1

Middleware Chaining

Middlewares allow you to hook into lifecycle of courier client, helpful in adding loggers, tracers, metric collectors, etc.

OpenTelemetry Support

Supports TraceID propagation using OpenTelemetry protocol, can trace spans with a simple middleware addition.

Custom Codec Support

Custom codecs allow you to easily dictate serialisation/deserialisation of Golang structs.

xDS Support

xDS(envoy) support allows the courier client to do client side load balancing with Control Planes like Istio.