I have implemented a relay server on top of WebSocket. Sender will send many small binary messages to the server and they are then relayed to all the connected clients.
What I am interested in is the time between sender send the message and the reader receives the message. Right now I have already setup the Test Plan with a thread group of 25 receivers and another group of 1 sender and they can receive and send the message respectively.
The aggregate report is considering the send message and read message as two different labels. How should I configure the Test Plan to record my desired time?
p.s. I am using this jmeter WebSocket sampler plugin
https://bitbucket.org/pjtr/jmeter-websocket-samplers
Thanks in advance.