alias MQTT::V5::Client::Callback

Overview

A subscription callback. Beyond the 3.1.1 forms, 5.0 messages carry properties worth reaching, so a callback may take the whole packet

Alias Definition

MQTT::V5::Publish -> Nil | String, Slice(UInt8), Bool -> Nil | String, Slice(UInt8) -> Nil

Defined in:

mqtt/v5/client.cr