Normally JMeter sends a HTTP request and waits for a response to measure the response time and then to send a next request.
I have a situation where they have created a HTTP endpoint to an embedded software device. But it is one way traffic only, which means I send a HTTP request, but the embedded device doesn't send a response. This is the intention and how it should work.
Is it possible that JMeter doesn't wait for the response and just sends a next request?
A way to do it is to set a Response timeout on the HTTP Request and add an assertion to ignore response timeout.
1 second for response timeout in HTTP Request:
And adding a Response Assertion that ignores status and expects a Timeout:
But this is not very clean.
Related
I receive some response headers:
Connection: Upgrade
Sec-WebSocket-Accept: zi1DDwu1UMCCUC1nJX/k65L6jfQ=
Upgrade: websocket
as a result of web socket open connection
response header of websocket open connectiob
and now need to pass it to the request headers of the request response sampler as right now in the above image
request header of response sampler
there are no request headers shown
but for HTTP request it is coming (check for request header of HTTP request
I tried passing the values to the header manager but it is not passing to websocket sampler they are passing for only HTTP request.
I want that request headers to be passed to the web socket request response sampler
You don't need to do anything.
The WebSocket Samplers plugin by Peter Doornbosch automatically handles Sec-WebSocket-Key and Sec-WebSocket-Accept headers, moreover it even checks that the latter one has its anticipated value.
You can see the outgoing headers by either using a sniffer tool like Fiddler or Wireshark or enabling debug logging for the WebSocket Samplers plugin by adding the next line to log4j2.xml file:
<Logger name="eu.luminis" level="debug" />
JMeter restart will be required to pick up the change, once done you will be able to see request and response details in jmeter.log file
i have asked some questions about this and not resolved yet. i realized a new and important issue.
i listened the network by using browser and wirehark and saw that if a signalr/connect request is sent, the server does not return an http response. it sends some tcp responses and then client sends a signalr/start.
this sample is taken from browser test:
in Jmeter, after sending the signalr/connect request, jmeter waits an http response. and naturally server doesnt send this reesponse. i want to send the signalr/connect request, but not wait for an http response. how to do this?
If you want to use HTTP Request sampler - just add some small response timeout (i.e. below 1000 milliseconds), the setting lives at "Advanced" tab:
The sampler will send the request and fail in 100 milliseconds with java.net.SocketTimeoutException: Read timed out
If you don't want this failure to appear in the test results as the failure - add a Response Assertion configured as follows:
This way JMeter will send the response, disconnect in 100 milliseconds and will mark the sampler as passed.
I am using the Jmeter WebSocket Sampler. I have successfully connected to the websocket, and can send a json request. It is a chat bot, and I will be validating it's response.
However, I have observed in websocket log, the websocket responds to the json request with a short confirmation response before the actual response.
for example, the first response is {"event":joingame,} where the response is {"event":"game"}. I don't really need this information.
Only then is the real response sent (as I observed in webscoket log)
I have tried the general Websocket Sampler.
The websocket responses come in "frames", each having a JSON response, my samplers are closing right after the first frame.
You might want to switch to the WebSocket Samplers by Peter Doornbosch which can be installed using JMeter Plugins Manager
This way you will be able to establish a connection first:
and then continue reading the frames re-using the connection unless you find the frame with the content you're looking for:
It makes sense to use JSON Extractor and While Controller in order to continue reading until the anticipated text appears in the response.
More information: JMeter WebSocket Samplers - A Practical Guide
Will JMeter wait for a HTTP response code from one HTTP sampler before it executes the HTTP request from the next HTTP sampler in a simple controller?
It willl wait for the configured timeout which by default is infinite.
So the answer is yes.
If you set a timeout, it will wait for the response to come fir the timeout duration and then will stop, mark the request as timeouted and then call next request.
See:
https://jmeter.apache.org/usermanual/component_reference.html#HTTP_Request
My REST Service takes in a JMeter HTTP request and one of the parameters in the request is a callback url.
The REST Service uses this callback url to post back a response.
Is there any JMeter Listener I can use to receive the callback i.e. so that the REST Service can send the response back to a JMeter Listener.
And if possible the Listener can then send in another HTTP Request based on the response.
I'm not sure about your question. But I think you want to receive your REST response and make another request to URL in the response...
By that way, you need to "catch" the response by using Regular Expression Extractor, store URL in the response to a JMeter Variable. Then, you create HTTP Request, and put URL in that JMeter Variable into request.