how can we capture all requests going from JMeter running on Linux?

问题

My test is running on Linux VM via JMeter [command line]. Access logs of apache server shows that few requests didn't reached to it and for few requests, it is giving 400 response [i.e. bad request]

So i wanted to capture all requests going from JMeter and with parameters if possible.

Is there any way of doing it?

回答1:

1. You can do it using tcpdump tool like:

   tcpdump -i any -s0 -w /path/to/dump.pcap 
   

   And once JMeter test finishes open dump.pcap file with Wireshark and inspect packets

2. Alternative option is configure JMeter to save request and response data. It can be done in 2 ways:

   • Add the following lines to user.properties file (lives in "bin" folder of your JMeter installation)

     jmeter.save.saveservice.output_format=xml
     jmeter.save.saveservice.response_data=true
     jmeter.save.saveservice.samplerData=true
     jmeter.save.saveservice.requestHeaders=true
     jmeter.save.saveservice.url=true
     jmeter.save.saveservice.responseHeaders=true
     

   • pass above properties via -J command-line argument like:

     ./jmeter -Jjmeter.save.saveservice.output_format=xml -Jjmeter.save.saveservice.response_data=true -Jjmeter.save.saveservice.samplerData=true -Jjmeter.save.saveservice.requestHeaders=true -Jjmeter.save.saveservice.url=true -Jjmeter.save.saveservice.responseHeaders=true -n -t example.jmx -l example.jtl
     

   Once test finishes open resulting example.jtl file in JMeter GUI with View Results Tree listener - you will be able to see request and response details along with parameters, variables, etc.

References:

• JMeter Non-GUI Mode (Command Line mode)
• Apache JMeter Properties Customization Guide

来源：https://stackoverflow.com/questions/37044547/how-can-we-capture-all-requests-going-from-jmeter-running-on-linux