This app can be used to test the delay to a mqtt server with different payload sizes and timing intervals. The app can be build into a container or run from the command line.

Make sure you have npm and node installed on your system.

Install packages using:

npm install

run the app with:

node server.js -u user -s passwd -h localhost

the flags stand for:

• -h hostname (if ommited mqtt://localhost is used)
• -p port (if ommited port 1883 is used)
• -u user
• -s passwd
• -o output_file file to write message info to (if ommited stdout is used)
• -d data_file file to write message data to
• -t topic to subscribe to (use # as a wildcard for all)
• -q qos_option (0 if ommitted)
• -z true:flase print out time difference with last message
• -c Certificate_file Certificate for tls authentication name
• -k Private_key_file Private key file name for tls authentication
• -r Root_certificate_file Root Certificate file name
• -a true:false reject unauthorised connection true or false
• -v level for verbose output

example usage:

node server.js -u username -s 'password' -v 2 -t '#' -z true -h mqtts://localhost -p 8883 -k client_key.pem -c client_certificate.pem -r ca_certificate.pem -a true

Build docker image

docker build -t mqtt-receiver .

Run the docker image using:

docker run -it mqtt-receiver -u user -s passwd -h localhost