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Editorial Team
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Asked: 2026-05-24T20:30:56+00:00

Hopefully this is a common issue with JMeter testing. I setup a Proxy Server

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Hopefully this is a common issue with JMeter testing.

I setup a Proxy Server via JMeter to ‘record’ a test case in our DEVELOPMENT environment. That worked fine and I setup some ‘HTTP Request Defaults‘ to globally set the default ‘Server Name or IP’ and ‘Protocol’.

Now that the tests are completed on DEV, we have moved our code to our QA servers for more testing — and I thought I would simply have to change the ‘Server Name’ in my defaults and then run the tests.

One thing I noticed is that for each sampler in my test case, other headers are present in the ‘HTTP Header Manager‘ for that specific sampler — like User-Agent, Cache-Control, etc. The Referer header is the only one that concerns me because it still is ‘hard coded’ to be the DEV server.

Is there a way to set this dynamically — so that I can run this recorded test in multiple environments? How is this normally handled?

Any help is appreciated! Thanks.

jg

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  1. Editorial Team

    Jmeter will read the HTTP Request Defaults only if no value is provided in the HTTP Request. If you leave the domain blank in the request, it will read from the request; else it use the local value.

    As a quick fix, open your JMX file in a text editor and replace all instance of the domain with a blank value. Once you open your file back in Jmeter, add the domain value back into your HTTP Request Default config element.

    To avoid this in the future, fill out the Request Default values BEFORE recording. Jmeter will automatically filter out values that match the default.

    You can also do this with variables and user defined values. Be careful what default values you set. For example, if you said customerID = 123, any time Jmeter detects ‘123’ while recording, it will replace it with ${customerID}. So, if there is the value ‘12345’, Jmeter will record ${customerID}45

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