latency-tester-mqtt

Latency Tester MQTT

A GoLang tool designed to measure the latency between a client and a server using the MQTT publish/subscribe abstraction for the communication. It leverages a ping-pong approach, with a client publishing to a first topic and measuring the delay before the response is echoed back by the server on a second one. The results are written to a csv file for further analysis.

Degrees of configuration

Both the client and the server components can be configured by means of command-line flags. Specifically, the main parameters are the following:

• The MQTT broker address, and optionally its credentials;
• The size of the request and response messages;
• The delay between two subsequent messages published by the client;
• The number of messages published by the client;
• The selected MQTT QoS level.

How to build the tool

Both client and server can be built using the go compiler:

CGO_ENABLED=0 go build -o latency-tester-mqtt-client cmd/client/client.go
CGO_ENABLED=0 go build -o latency-tester-mqtt-server cmd/server/server.go

Alternatively, it is possible to build the corresponding docker images:

docker build -t latency-tester-mqtt-client -f build/client/Dockerfile .
docker build -t latency-tester-mqtt-server -f build/server/Dockerfile .