title: How to receive multiple websocket responses send in sequence, for a single request sent, using JMeter
body: <p>I'm trying to setup a performance test for a websocket application, using <strong>JMeter</strong>.
  The request is <code>{"type":"subscribe_rq","id":1,"ts":"2018-10-16T00:00:00","data":{"sinceSeq":0}}</code>.
  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 <strong>Thread Delay</strong>. Not sure if this will work...</p>