streaming connection - repeating exception when socket is closed

[elyrank]

this exception appears:
Unexpected error: RemoteEndpoint unavailable, current state [CLOSED], expecting [OPEN or CONNECTED]
org.eclipse.jetty.websocket.common.WebSocketSession.getRemote(WebSocketSession.java:245)
JMeter.plugins.functional.samplers.websocket.ServiceSocket.sendMessage(ServiceSocket.java:185)
JMeter.plugins.functional.samplers.websocket.WebSocketSampler.sample(WebSocketSampler.java:141)
org.apache.jmeter.threads.JMeterThread.process_sampler(JMeterThread.java:434)
org.apache.jmeter.threads.JMeterThread.run(JMeterThread.java:261)
java.lang.Thread.run(Unknown Source)

since it is streaming connection there is no new creation of a new socket after a disconnection