Connection timeout in JMeter does not work - jmeter

As shown in the above image, I have set a connection timeout of 20ms for the requests. However, I'm still getting sample times of over 20 (below image).
What might be the problem?

Ensure that your add obvervation15 is a HTTP Request sampler, HTTP Request Defaults will work only for the HTTP Request samplers, any other sampler types won't respect the timeout setting
If the add obvervation15 is a HTTP Request sampler - ensure that it's in the HTTP Request Defaults' scope otherwise the timeouts won't be applied
Given above 2 conditions are met the timeouts will be respected:

Related

how to manage a request if an http response is not needed in jmeter?

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.

Does the individual sampler advanced value settings overrides the http request defaults advanced settings?

I have one HTTP Request default that have optimized basic and advanced settings for the individual requests samplers to adapt.
And I now have updated one individual sampler advanced settings Connection timeout.
This I think is a basic question, does the individual sampler overrides the HTTP Requests defaults? or is it the other way around (Requests defaults overrides the individual sampler)?
If the former, does it apply to all the inputs or just the one I have updated Connection timeout?
HTTP Request Defaults provides default values for all the HTTP Request samplers in the HTTP Request Defaults scope
When you amend a value in the single HTTP Request sampler the default value becomes overridden for particular this sampler, other samplers will have the values you specify in the HTTP Request Defaults.
Changes are not propagated from the individual Samplers to the defaults, the direction is only from Defaults to Samplers.

Handling the two different “HTTP Request Defaults” values in JMeter

I'm currently doing a Performance testing and having a requirement similar(90%) to following question Ignoring-HTTP-Request-Defaults
Scenario - Total of 200 HTTPs Requests:
150 HTTPs Requests should run with Proxy, Port, Username and Password.
50 HTTPs Requests should run without Proxy, Port, Username and Password.
To satisfy this requirement, I have created one "HTTP Request Defaults" config element (With Proxy Authentication details) at Project Level and created the 50 separate "HTTP Request Defaults" (Without Proxy Authentication details) for each 50 HTTPs Request.
HTTP Request Default hierarchy screenshot:
So above 50 HTTPs Request Samplers (without Proxy Authentication) is getting failed with the below error message since it's not overriding the globally assigned "HTTP Request Defaults" config element (With Proxy Authentication details)
Response code: Non HTTP response code: org.apache.http.conn.HttpHostConnectException Response message: Non HTTP response message: Connect to proxy.usp.com:8080 [proxy.usp.com/91.195.240.126] failed: Connection timed out: connect
HTTP Request Defaults obey JMeter Scoping Rules
HTTP Request Defaults provide default values for the fields/settings which are not set in the HTTP Request sampler (or other HTTP Request Defaults)
So if you set proxy at the global level - it will be applied for *all** the HTTP Request samplers in scope.
The solution would be to set proxy details by adding a HTTP Request defaults to the Sampler(s) which need to have proxy.
You cannot "override" parent HTTP Request Defaults proxy settings by providing blank values, as of JMeter 5.1.1 you can only do the opposite thing.

Will JMeter wait for the HTTP response of a HTTP sample before running the next one?

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

One way request, no response

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.

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