JMeter WebSockets Publish/Subscribe - scripting aschronous responses

Question

We have built a publish/subscribe model into our application via WebSockets so users can receive "dynamic updates" when data changes. I'm now looking to load test this using JMeter.

Is there a way to configure a JMeter test to react to receipt of a WebSocket "published" message and then run further samplers i.e. make further web requests?

I have looked at plugin samples, but they appear focused on request/reply model (e.g. https://bitbucket.org/pjtr/jmeter-websocket-samplers) rather than publish/subscribe.

Edit:

I have progressed a solution for this using the WebSocketSampler - an Example JMX file can be found on BitBucket which uses STOMP over WebSockets and includes Connect, Subscribe, Handle Publish Message and Initiate JMeter Samplers from that.

Answer 1

It is a misunderstanding that the https://bitbucket.org/pjtr/jmeter-websocket-samplers/overview plugin only supports request-response model conversations.

Since version 0.7, the plugin offers "single read" and "single write" samplers. Of course, it depends on your exact protocol, but the idea is that you could use a "single write" sampler to send a WebSocket message that simulates creating the subscription and then have a (standard JMeter) While loop in combination with the "single read" samplers, to read any number of messages that are being published.

If this does not satisfy your needs, let me know and i'll see what i can do for you (i'm the author of this plugin).