Liver finishing, interface testing - Fiddler requests packet capture for Jmeter (detailed actual combat)

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foreword

Use Fiddler combined with Jmeter to capture and analyze packets to better assist testing.

problems encountered

Take an interface for obtaining student information as an example.

When the request is correctly set in Jmeter according to the interface document, after opening Fiddler, it is found that the request of Jmeter cannot be caught.

As you can see from the picture, Fiddler did not catch the request sent by Jmeter.

problem analysis

A brief analysis shows that Fiddler operates as a proxy web server during use. The proxy address is 127.0.0.1 and the port is 8888. It will listen to the HTTP proxy on port 8888 when it is running.

Therefore, when we set the proxy address and port to be consistent with Fiddler in Jmeter's current request, Fiddler should be able to grab the request data sent by Jmeter.

Set proxy in Jmeter request

Currently we have 2 HTTP requests, let's set up only 1 first.

After the setup is complete, execute the test plan again.

It can be seen that Fiddler captured the first request, but the second request did not capture the data because no proxy was set.

Set HTTP request defaults

If we have a lot of requests, it is impossible for us to set a proxy in every request, so we'd better set a default value for HTTP requests.

We only need to set the proxy server in the HTTP request default value, then subsequent requests will use the value set by the HTTP request default value by default, so that our requests can be captured by Fiddler.

Note: When Fiddler is closed, we need to disable the HTTP request default value in Jmeter to cancel the currently set proxy, otherwise Jmeter may not be able to request normally.

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7. Commonly used automated testing tools

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