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Programming language: Crystal
License: MIT License
Tags:
Network Protocols
Latest version: v1.0.2
crystal-mqtt alternatives and similar shards
Based on the "Network Protocols" category.
Alternatively, view crystal-mqtt alternatives based on common mentions on social networks and blogs.
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crystal-json-socket
JSON-socket client & server implementation. Inspired by and compatible with sebastianseilund/node-json-socket -
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README
Crystal MQTT
A MQTT communication library for crystal lang with pluggable transports
Installation
- Add the dependency to your
shard.yml:
dependencies:
mqtt:
github: spider-gazelle/crystal-mqtt
- Run
shards install
Usage
require "mqtt/v3/client"
# Create a transport (TCP, UDP, Websocket etc)
tls = OpenSSL::SSL::Context::Client.new
tls.verify_mode = OpenSSL::SSL::VerifyMode::NONE
transport = MQTT::Transport::TCP.new("test.mosquitto.org", 8883, tls)
# Establish a MQTT connection
client = MQTT::V3::Client.new(transport)
client.connect
# Perform some actions
client.publish("steves/channel", "hello", qos: MQTT::QoS::BrokerReceived)
client.ping
# Subscribe to a channel
client.subscribe("$SYS/#") do |key, payload|
# payload is a Bytes slice (to support binary payloads)
content = String.new(payload)
puts "#{key}: #{content}"
end
sleep 5
# Unsubscribe from a channel
client.unsubscribe("$SYS/#")
sleep 1
# Pauses the fibre here until the socket closes (disconnect)
client.wait_close
# You can also explicitly disconnect
client.disconnect