I'm trying to setup a performance test for a websocket application, using JMeter.
The request is {"type":"subscribe_rq","id":1,"ts":"2018-10-16T00:00:00","data":{"sinceSeq":0}}.
Response is multipart and sequential; initial response and an update every second, as long as the connection is open. (I checked this with "WebSocket Test Client", a chrome extension).
Currently, I only get the first main response, but not the updates. Rather not sure how to get these updates. How to achieve this in JMeter? That is, how to keep the connection open for a specified period (say 5 secs) and receive the multiple responses during that period and assert it?
To keep the connection open I have a Constant Timer with 5 secs in Thread Delay. Not sure if this will work...
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votes
Which (JMeter) WebSocket plugin are you using?
– Peter
@Peter, I've been trying to use both "JMeter WebSocket Sampler by Maciej Zaleski" and now "JMeter WebSocket Samplers by Peter Doornbosch". So far have not figured how to use them in above situation.
– user10829672
1 Answers
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Going forward please remember to include essential parts of your query into the question itself, i.e. output from the "Network" tab of the browser developer tools or screenshot of this WebSocket Test Client (whatever it is) could tell the full story.
In the mean time, there is a project: JMeter WebSocket Samplers by Peter Doornbosch which has many useful sample JMeter Test Plans including the one which you can use as the basis: Single read sample.jmx which queries the data in the loop over the single WebSocket Connection.
Check out JMeter WebSocket Samplers - A Practical Guide article to get started with the WebSocket Samplers.
