"UnknownHostException" in Jmeter - jmeter

I just started learning JMeter today. Wrote a simple web test - 10 user, 1 iteration to hit a webpage,
but in the "view result tree" I get "JMeter Response code: Non HTTP response code: java.net.UnknownHostException"
Thanks in advance for helpers

Most probably you're behind a corporate proxy, your computer is not connected directly to the Internet, it is connected via special machine which grants Internet access to other computers over the network.
You need to make JMeter aware of this proxy, it can be specified at
"Advanced" tab of the HTTP Request sampler (or even better HTTP Request Defaults)
Via command-line arguments like:
jmeter -H your-proxy-host -P your-proxy-port
Via system.properties file like:
https.proxyHost=your-proxy-host
https.proxyPort=your-proxy-port
More information: Using JMeter behind a proxy

You might give a try using Chrome Plugin of Blazemeter.
Add Blazemeter Plugin to Chrome (You need to create free account on Blazemeter)
Record sample script
Download Script as .JMX
Try executing the script from your local version of JMeter
This helps with automatically recording browser proxies.

Related

How to bypass proxy for JMeter recording?

I am not able to record the JMeter script because the Organization's proxy settings in the browsers blocking the JMeter to record the network calls. I am not allowed to change the Organizations default proxy settings in the browsers.
How can I bypass this proxy settings and record the JMeter script?
Also when I manually add the API calls in the JMeter and execute, it gives me the response of Organizations default proxy html message page. I added the Organizations proxy details in the Http request Proxy Server tab which is also failing.
You can use a browser which have its own proxy configuration like Firefox, a fresh installation should not be impacted with your organization policies. Alternatively if you're allowed to install browser extensions you can use i.e. JMeter Chrome Extension. And finally it's possible to export recorded requests from the "Network" tab of your browser developer tools in form of .HAR file and convert this file into a JMeter test script using BlazeMeter Converter
In order to replay the requests via proxy you need to configure JMeter to use this proxy, see Using JMeter behind a proxy for detailed instructions, the easiest way is providing proxy details via command-line arguments like:
jmeter -H my.proxy.server -P 8000 -u username -a password

Postman integration with JMeter

I'd like to point out that this current question is a follow-up to an earlier post that talks about using Postman in conjunction with JMeter. That other thread can be found here:
Postman script to JMeter script
Anyways, the original thread suggested that JMeter could record the traffic that a Postman collection would trigger by following the below procedures:
1- Launch Postman and setup the proxy server under File>Settings>Proxy to
use port as localhost:8087.
2- Launch JMeter tool, open recording template and setup the proxy to use
the port '8087' under 'HTTP(S) Test Script Recorder' element (same
port that is set in Postman)
3- Now all the API requests that you send in Postman will be captured in
JMeter and store under Thread Group>Recording Controller.
I've tried to setup the proxy in Postman but that doesn't work for me (unless I'm missing something).
When I run a collection with no proxy defined, I get the responses just fine. But when I flip the "custom proxy" on (using localhost:8087), I get this error:
Error: tunneling socket could not be established, cause=connect ECONNREFUSED 127.0.0.1:8087
I've gone through some solutions posted on GitHub but with no success. If its any relevant, I'm on Windows 7. Anyone familiar with this behavior?
The error you're getting means that Postman is not capable of connecting to JMeter, so please double check that:
HTTP(S) Test Script Recorder is really configured to use port 8087
HTTP(S) Test Script Recorder is started
If you would like to start from scratch:
Prepare JMeter for recording. The fastest and the easiest way is using JMeter Templates feature. From JMeter's main menu choose File -> Templates -> Recording and click Create
Change Port to 8087 and click "Start"
If you still experience any problems - look into jmeter.log file.
It might also be the case you will need to install JMeter's self-signed certificate into Postman

How to manage Proxy in Jmeter

I have to do performance test of a web based application through Jmeter. To connect to the application , I have to be in Client VPN and it has specific proxy to connect. The application will NOT work in Local host..
How to perform this? I tried by running Jmeter from command prompt . Please help .
You can configure JMeter to use proxy in 2 ways:
Command-line
jmeter -H your_proxy_host -P your_proxy_port
Using system.properties (the file lives under "bin" folder of your JMeter installation, add the next lines to it:
http.proxyHost=your_proxy_host
http.proxyPort=your_proxy_port
https.proxyHost=your_proxy_host
https.proxyPort=your_proxy_port
JMeter restart will be required to pick the properties up.
First check that you have the correct proxy parameters like Proxy Server IP/address,port no,username and password.
Then, in the first HTTP Request, click on advanced tab and there you find Proxy server section.
Fill the required information and run the jmeter. Based on the response you can judge where you are able to send the request via proxy or not.
I have used it with proxy server name with username and pwd. For me it worked, by that I means you can try by whatever information you have.
Then, you can set the properties permanently as suggested by Dmitri. Also, it can be set in HTTP Request Default Config.
Check the below link for more information:-
https://jmeter.apache.org/usermanual/component_reference.html#HTTP_Request

How to record using jmeter Http proxy server with "Automatic proxy configuration URL" (i.e .pac file )in proxy in browser

In Jmeter, I am not able to record any external website from our company proxy server.
I have to use option "Automatic proxy configuration URL" (i.e one .pac file )in to browser if I dont know how to configure it in Jmeter to do successful recording.
Any idea?
PAC fiels contain javascript which is executed by the browser to decide which proxy URL they want to use. JMeter is not a browser so it does not run this code. The solution is simply to resolve which proxy this script returns and input this value into JMeter directly, you can do this using the dev tools on most browsers, or just ask the IT dept. that maintains the thing to tell you the direct address.
Same question with solution in Jmeter mailing archive.
Jmeter: Using a Proxy Server.

JMeter : How to record HTTPS traffic?

I'm using Apache JMeter 2.3, which now supports "attempt HTTPS spoofing" under the Proxy Server element.
I've tried this on several different servers, and have had no success.
Has anyone been able to successfully record from an HTTPS source with this setting?
Or barring successfully recording, can anyone share a work-around? When available, I simply have HTTPS turned off at the server level, but this is not always feasible. Thoughts?
Starting from JMeter 3.0 default port for the HTTP(S) Test Script Recorder is 8888
The easiest way to configure recording is using JMeter Templates feature. From JMeter's main menu select:
File -> Templates -> Recording -> Create
Don't forget to start the recorder :
In JMeter < 4.0, Expand "Workbench", if >= 4.0, ignore this step
Select "HTTP(S) Test Script Recorder"
Click "Start" button
You will see a message regarding Root CA Certificate. Click OK:
it is OK, it informs you JMeter has created a Root Certificate Authority that you need to import in your browser to be able to record correctly HTTPS traffic.
To Import this Root CA certificate in Firefox (it is located in jmeter/bin folder) for example:
Configure browser to use JMeter as proxy:
It is now Ok.
You can navigate to your application, samplers will be created under "Recording Controller" which is under "Thread Group" element
While the JMeter proxy already has the ability to record HTTPS requests, a Chrome Extension that creates JMeter script came out recently:
https://chrome.google.com/webstore/detail/blazemeter-the-load-testi/mbopgmdnpcbohhpnfglgohlbhfongabi?hl=en
It uses a BlazeMeter as the middleman (a commercial JMeter in the cloud service) but you can use their free service forever and still use the plugin to record a JMX script and download it locally to your own machine even if you never use any of the paid plans.
What I do is:
Go to my website using my web server's IP-address (i.e. http://2.2.2.2/login.html)
Start the recorder and run through my test case
Stop recording
Replace all values of the IP address with the domain name (i.e. replace 2.2.2.2 with yoursite.com) from the HTTP Request Samplers
Set the protocol to https in the HTTP Request Samplers
If you have more than a few pages, it's easiest to create an HTTP Request Defaults item, and set your domain name and protocol there.
FYI, I'm using the latest stable build as of 2010-05-24: Jmeter 2.3.4 r785646.
The newest version of Jmeter (2.4) now supports HTTPS recording. Rejoice!
More details:
http://wiki.apache.org/jmeter/JMeterFAQ#Can_JMeter_record_HTTPS_requests_using_the_recording_proxy.3F
Is there any other way to record HTTPS than Bad boy and Https spoofing?
Yes--use a nightly build of JMeter, e.g. version r922204.
Https recording is successfully working in new version of Jmeter 2.9 as of today. I had to import proxy certificate and play around with Firefox to get this working.
Refer this link for more information
Https recording using Jmeter
Yes, I have used it with "attempt HTTPS spoofing" on. Things are simple enough:
Turn HTTPS Spoofing on (of course).
Make sure that the browser sends Http request to Jmeter, so that Jmeter can record it and then send the encrypted request back to the server. So, the URL in the browser should start with http:// (and not with https://). The details could be found in my blog.
Please let me know if it works for you.
I am using Webscarab to record https and ajax conversations.
It workd fine. I extended the Webscarab with export function for Jmeter.
Bugzilla 48898.

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