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Added "delay" option for rate limiting #2

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Added "delay" option for rate limiting #2

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14 changes: 13 additions & 1 deletion lua/example/example_01.lua
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Original file line number Diff line number Diff line change
Expand Up @@ -24,7 +24,14 @@ function callback(

print("Topic: " .. topic .. ", message: '" .. message .. "'")

mqtt_client2:publish(args.topic2, message)
time = socket.gettime()
if (time - last_time >= args.delay) then
-- print("PUBLISHING: " .. time .. " Delta: " .. time - last_time .. " Delay: " .. args.delay )
last_time = time
mqtt_client2:publish(args.topic2, message)
else
-- print("NOT READY: " .. time .. " Delta: " .. time - last_time .. " Delay: " .. args.delay )
end
end

-- ------------------------------------------------------------------------- --
Expand All @@ -47,10 +54,15 @@ args = lapp [[
-q,--port2 (default 1883) Publish MQTT server port number
-s,--topic1 (default test/1) Subscribe topic
-t,--topic2 (default test/2) Publish topic
-d,--delay (default 0) Minimum period between messages
]]

local MQTT = require("mqtt_library")

-- Globals accessed within callback
last_time = 0
time = 0

mqtt_client1 = MQTT.client.create(args.host1, args.port1, callback)
mqtt_client2 = MQTT.client.create(args.host2, args.port2)

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