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simple.lua
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simple.lua
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-- load mqtt module
local mqtt = require("mqtt")
-- create mqtt client
local client = mqtt.client{
-- NOTE: this broker is not working sometimes; comment username = "..." below if you still want to use it
-- uri = "test.mosquitto.org",
uri = "mqtt.flespi.io",
-- NOTE: more about flespi tokens: https://flespi.com/kb/tokens-access-keys-to-flespi-platform
username = "stPwSVV73Eqw5LSv0iMXbc4EguS7JyuZR9lxU5uLxI5tiNM8ToTVqNpu85pFtJv9",
clean = true,
}
print("created MQTT client", client)
client:on{
connect = function(connack)
if connack.rc ~= 0 then
print("connection to broker failed:", connack:reason_string(), connack)
return
end
print("connected:", connack) -- successful connection
-- subscribe to test topic and publish message after it
assert(client:subscribe{ topic="luamqtt/#", qos=1, callback=function(suback)
print("subscribed:", suback)
-- publish test message
print('publishing test message "hello" to "luamqtt/simpletest" topic...')
assert(client:publish{
topic = "luamqtt/simpletest",
payload = "hello",
qos = 1
})
end})
end,
message = function(msg)
assert(client:acknowledge(msg))
print("received:", msg)
print("disconnecting...")
assert(client:disconnect())
end,
error = function(err)
print("MQTT client error:", err)
end,
}
print("running ioloop for it")
mqtt.run_ioloop(client)
print("done, ioloop is stopped")