Getting the error "Sampler error: unexpected frame type." when reading a frame using Single Read Sampler with JMeter and JMeter Websocket Plugin

Question

I am using Jmeter for the load testing of an application which includes web socket connection.

When trying to read the data in a frame using Single Read Sampler, got an error "Sampler error: unexpected frame type."

Can anybody help me in solving this issue?

There should be an error message in the jmeter.log, indicating which (unexpected) type of frame was received. If it's a ping, than the solution given by Ubik Load Pack is indeed the right way to solve it. — Peter
Also, the "Response message" in the sampler result should read something like "Received: Ping frame with no application data".... — Peter

UBIK LOAD PACK UBIK LOAD PACK · Accepted Answer · 2018-11-02T08:19:15

Ensure you use last version of this plugin:

You can install it using JMeter Plugin manager:

And add a "ping frame filter" as described here: