Not to able to get websocket connection?any help about jmeter-websocketsampler HOT 13 OPEN

have the same problem

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I am experiencing same problem. Any pointers would be helpful please

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Same issue also not able to provide a loop to generate unique Websocket connections anyone can help?

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Same issue when I run a thread group with thread numbers larger than 1. Any existing solution to fix it?

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When I track in the code, I see that the session is null actually (session.getRemote().sendString(message); ) and before that, onOpen method wasn't called.

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Hello,

I amd using SignalR of Microsoft and I had the same issue: I digged into problem by using wireshark. I found out that Server was returning "http 500".
On my side, Solution for this:
Encode Token and ConnectionToken on jmeter.

Then next problem appeared: "Http 400" occured.
I found another problem java.net.URI.
The code in WebSocketSampler.java is like this:
URI uri = new URI(protocol, null, domain, -1, path , queryString, null);
ın this case querystring was encoded 2 times so the connectiontoken was encoded 2 times, therefore, Server can not understand connectiontoken so it returns HTTP 400.
So I fixed the code like this:
URI uri = new URI(protocol, null, domain, -1, path + "?" + queryString, null, null);

And Recompiled and installed with maven and put it in Jmeter.
Now It is working on my side quite well.

I hope it will help.

Cheers,

from jmeter-websocketsampler.

Hi,

I cannot find the source code in WebSocketSampler.java:
URI uri = new URI(protocol, null, domain, -1, path , queryString, null);

Could you give more detailed info?
Thanks.

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https://github.com/maciejzaleski/JMeter-WebSocketSampler/archive/version-1.0.2.zip
src\main\java\JMeter\plugins\functional\samplers\websocket\WebSocketSampler.java
Line 228
Line 230

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ceritandogan, Got it, thanks!

The problem is eased but not fixed completely yet.
Could you give the code fix details? Thanks!

My problem is when I run a thread group with thread number of n (n > 1), all the thread will failed to connect to the server except the last one always succeed.
Now with the fix, When n = 3, I got the last 2 threads succeed to connect to the server except the first one.

My fix done as ceritandogan gave:

        if (isProtocolDefaultPort()) {
//            return new URI(protocol, null, domain, -1, path, queryString, null);
        return new URI(protocol, null, domain, -1, path + "?" + queryString, null, null);
        }
//        return new URI(protocol, null, domain, Integer.parseInt(getServerPort()), path, queryString, null);
        return new URI(protocol, null, domain, Integer.parseInt(getServerPort()), path + "?" + queryString, null, null);

Also, I instrumented logs in WebSocket.java as below:

public void sendMessage(String message) throws IOException {
        if (session != null){
            logMessage.append(" - Session not null! JMeter.plugins.functional.samplers.websocket.ServiceSocket.sendMessage!").append("\n");
        } else {
            logMessage.append(" - Session null! JMeter.plugins.functional.samplers.websocket.ServiceSocket.sendMessage!").append("\n"); 
        }
        if (session.getRemote() != null)
            logMessage.append(" - session.getRemote not null! JMeter.plugins.functional.samplers.websocket.ServiceSocket.sendMessage!").append("\n");

        if (message != null)
            logMessage.append(" - ").append(message).append(" - mssage! JMeter.plugins.functional.samplers.websocket.ServiceSocket.sendMessage!").append("\n");

        session.getRemote().sendString(message);
    }

The failed thread's sampler results:

[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
• Session null! JMeter.plugins.functional.samplers.websocket.ServiceSocket.sendMessage!

[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)

The code line numbers in the output are those of the origin source code before I changed any code.

The sampler results show that the session here is Null for the failed user. (- Session null! JMeter.plugins.functional.samplers.websocket.ServiceSocket.sendMessage!)

Any ideas?

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@peer2peer I updated jetty to use version 9.3.9.M1 and I am no longer getting this error.

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@peer2peer ，I also have this problem，Could you tell me how to solve this problem or giving me your JMeterWebSocketSampler-1.0.2-SNAPSHOT.jar which you have modified.Thanks~~~~

Thread Name: Thread Group 1-1
Sample Start: 2015-04-20 13:18:38 EDT
Load time: 5010
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:147) JMeter.plugins.functional.samplers.websocket.WebSocketSampler.sample(WebSocketSampler.java:116) 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

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@peer2peer, @conwilly88 & @x00350069 I have updated dependency to mentioned jar files, still facing the issue. Can you guys point me to right direction?

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I also met this issue, @peer2peer, @conwilly88 & @x00350069 can you share a fixed jar file? Thanks.

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