WebSocket Single Read Sampler reports unexpected frame type (close)

[Former user]

Hi ,

I'm testing a chatbot that uses WebSocket to send messages. Configured the test plan in JMeter and used the WebSocket samplers a. WebSocket Open Connection: to Open the connection - Status passed (101) b. WebSocket Single Write Sampler: (use existing connection) - Message in Request data - Status passed c. WebSocket Single Read Sampler: (use existing connection) - Failed - error Response Code: (unexpected frame type close) Response Message: Received: Close frame with status code null and close reason 'null'

What do the error mean? Please help to resolve this issue.

[Peter Doornbosch]

The error means that the server is closing the websocket connection. This is reported “unexpected” because you configured a read sampler, so your test plan is expecting to read a data frame, but instead it encounters a close frame.

Hth
Peter