Sometimes websocket sampler throwing Null response while opening socket connection about jmeter-websocketsampler HOT 12 OPEN

when I choose this ：all went well

from jmeter-websocketsampler.

+1 using spring / sockjs / stomp

from jmeter-websocketsampler.

can you please respond on this?

from jmeter-websocketsampler.

Any resolution on the above issue?
I am seeing the same error message

Thread Name: Thread Group 1-1
Sample Start: 2015-03-20 13:43:39 EDT
Load time: 5015
Connect Time: 0
Latency: 0
Size in bytes: 0
Headers size in bytes: 0
Body size in bytes: 0
Sample Count: 1
Error Count: 1
Response code:
Response message:

[Execution Flow]

• Opening new connection
• Using response message pattern ""
• Using disconnect pattern ""
• Waiting for the server connection for 5000 MILLISECONDS
• Cannot connect to the remote server

[Variables]

• Message count: 0

[Problems]

• Unexpected error: null
  JMeter.plugins.functional.samplers.websocket.ServiceSocket.sendMessage(ServiceSocket.java:156)
  JMeter.plugins.functional.samplers.websocket.WebSocketSampler.sample(WebSocketSampler.java:136)
  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)

Response headers:

SampleResult fields:
ContentType:
DataEncoding:

from jmeter-websocketsampler.

+1

from jmeter-websocketsampler.

+1

from jmeter-websocketsampler.

When the thread group with many number of threads, the issue happened.
But if I set the thread number as 1, the issue will never happen. What's the cause?

Thanks!!!!!!

Thread Name: Thread Group 1-2
Sample Start: 2015-08-23 10:40:31 CST
Load time: 5039
Connect Time: 0
Latency: 0
Size in bytes: 0
Headers size in bytes: 0
Body size in bytes: 0
Sample Count: 1
Error Count: 1
Response code:
Response message:

[Execution Flow]

• Opening new connection
• Using response message pattern ""
• Using disconnect pattern ""
• Waiting for the server connection for 5000 MILLISECONDS
• Cannot connect to the remote server

[Variables]

• Message count: 0

[Problems]

• Unexpected error: null
  JMeter.plugins.functional.samplers.websocket.ServiceSocket.sendMessage(ServiceSocket.java:156)
  JMeter.plugins.functional.samplers.websocket.WebSocketSampler.sample(WebSocketSampler.java:136)
  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)

Response headers:

SampleResult fields:
ContentType:
DataEncoding: UTF-8

from jmeter-websocketsampler.

According to my experiences ,
There could be 2 reasons:
1)Server could return HTTP 500: Check your server log. if you can't, use Wireshark to see the error.

2)Server could return HTTP 400:
You could override some server header or another connectionId error. Header "Host" can cause sometimes problems.

Call the same url that you generated in browser.

from jmeter-websocketsampler.

Im facing also the same errors. Connection with the socket is not happening and i m getting the following errors in jmeter.
[Problems]

• Unexpected error: null
  JMeter.plugins.functional.samplers.websocket.ServiceSocket.sendMessage(ServiceSocket.java:156)
  JMeter.plugins.functional.samplers.websocket.WebSocketSampler.sample(WebSocketSampler.java:136)
  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)

from jmeter-websocketsampler.

+1

from jmeter-websocketsampler.

@MWhyte wondering how did you configure testplan to use spring / sockjs / stomp

from jmeter-websocketsampler.

+1. Having the same issue. Using spring/sockjs/stomp

from jmeter-websocketsampler.