I have N-tier application; the presentation layer remote to the service layer through Spring Remote over HTTP. The enterprise uses Mercury LoadRunner for load testing. My question is how can I test the Service Layer by itself using LoadRunner and Spring Remote?? I looked around and could not find documentation on how to do so. Kindly share your experience. Thanks!
It's been a long time since I used this method, so I don't know if it will still work.
Record a web script and look in your proxy settings, you'll see that the web browser is pointing at localhost on port 7777. Set the Spring Remote machine's proxy server to be your VUGen machine on port 7777, it should record without problems, but you'll have to tweak your runtime settings to properly emulate a server.
If this doesn't work then you'll have to record the network traffic with a packet capture library (winpcap, pcap or Wireshark) and write your scripts by hand. This won't be hard if you understand HTTP.
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I have developed a Jooby-Application which is hosted on a netty server. I can access the application on localhost and tests were fine. Now I want to make the app accessable over internet and dont know what is the best way to reach this goal?
The complete application is hosted on a Windows Server, because it uses Excel. (Read/Write over Apache POI. For macros it has to be Windows) Should I try to connect the running netty-server with IIS or can I just forward the requests from outside to localhost? The last mentioned approach propably is a bad idea regarding security issues.
It works with reverse proxy over IIS. I had to install some features like Application Request Routing and URL Rewrite. Then I can start the jooby application (netty server) as usual on a specific port at localhost and set a reverse proxy to it.
I am not sure why being on a window is necessary, anyways, Netty is just a Java network programming framework, it can run on any platform where Java is installed.
You need to host a server, you can buy a VPS, install windows as OS, install Java, you can run your application as you like.
What I understand is you need to test it, for that you can use any port forwarding service like https://pagekite.net/support/intro/features/ to enable "world access" to localhost
I would like to add encrypted connections to my Spring application running on a Tomcat server in a remote host (Amazon EC2 server). I was going to add a Let's Encrypt certificate to my Tomcat, but while searching on the web I read that encrypting my connections could considerably slow down my application. So I was wondering, what would be the best practice to encrypt my application? And does it really slow down so much my application that it would be noticeable? I would really like to implement the best solution, so I am very grateful in advance for suggestions.
The (almost) universal practice is to put a proper high performance web server like nginx or Apache HTTPD in front of your application server acting as a reverse proxy and handling SSL. That way your application server stays on a private network and only a web server is exposed. It’s very easy and you can find many tutorials on how to set it up. Like this one: http://webapp.org.ua/sysadmin/setting-up-nginx-ssl-reverse-proxy-for-tomcat/
I've to design a solution that permits to read real-time data generated by local sensors through a remotely-hosted web application.
The design is still work in progress: the sensors' data could be handled by a windows application/service installed on the client machine, or by some external hardware (like a raspberry) located on the same network of the client machine.
Now, I'm very new to WebSockets, but they seems exactly what I need for providing real-time data via browser.
My question is: can a remote web application open a WebSocket to a server that is located on the same local network which the client belongs to?
Is solution B possible? How can I achieve that?
For example, I'd like the server to be located on the client localhost. Sensors would send data to the local windows service, and the web application would show them by opening a WebSocket to localhost (client localhost, not server localhost!).
Well, I did some testing and the answer is yes, it is possible.
Test setup:
A web page hosted on a remote server, with a WebSocket client which connects to 'localhost'.
WebSocket server running on my pc.
It worked.
i'm using the WSO2 ESB to integrate several services on the Windows virtual machine.
I used the simple proxy to map the services deployed on it. But the problem is what i can't access them from outside it nevetheless the port 8280 where services are deployed is open for internet, but i can see only blank page instead. What could be wrong?
Another question is i was trying to map the WSO2 ESB management console itself to be availbe from outside the machine using simple proxy, and i'm failed, it loads me the this is what i see on trying the service.
Could you please give me a hint on how to resolve this issue? is it possible to share the esb mgmt console using the ESB itself?
Thanks a lot in advance,
Do u have proxy in the middle? It looks like on screenshot webpage missing all pictures, meanwhile css was loaded successfully.
Another question which kind of virtual machine u use? For example in virtualbox by default virtual machine behind NAT.
I wasn't able to connect to server on virtual machine from host only opposite way server on host available in virtual machine.
To make server in virtual machine available on host need to configure network as bridge.
Not sure if it helps, but I think I had a similar problem in our corporate network after I applied all the security patches (poodle,Diffie-Hellman etc.). I had to configure the addresses in catalina.xml (if i remember right) that are/under which allowed to access the admin console. Cannot tell you more details because I'm on holiday :-)
Maybe it's worth to give it a try.
Another example from real life. HTTP Response from external resource was application/json, status of response 200 OK. ESB configured to use
<messageFormatter contentType="application/json"
class="org.apache.synapse.commons.json.JsonStreamFormatter"/>
but content was simple text/plain.
During parsing body of http response exception was thrown and just silently was written to log, without any fault message processing. Just empty response to client.
To clarify that services reachable, there is echo service by default on server, which respond content equal to request. Try to use it.
was trying to map the WSO2 ESB management console itself to be availbe
from outside the machine using simple proxy
By default the management console tries to enforce the port 9443 for dynamic links (JSP) pages. That's why you see only part of the pages and you shouldn't be able to log on.
what you can do is edit the repository/conf/tomcat/catalina-server.xml and to the Connector running the port 9443 you can add an attribute proxyPort="443", the carbon console will be happy to run on 443.
For the services, my educated guess would be on the firewall / network rules, however without other information I cannot answer (or - they are working, just you may not try to access them by simple browser request)
How to record a script using jmeter for capturing the webservice requests that occurs between two applications ?
Check out https://www.digitalocean.com/community/tutorials/how-to-use-jmeter-to-record-test-scenarios. Specifically, the information on how to set up the proxy for Firefox. You have to make requests through a proxy at 127.0.0.1:8080 or localhost:8080.
Configure both applications or underlying application server, or underlying Java Virtual Machine or underlying operating system to use host, running JMeter as a proxy and it will record all the requests between applications.
You can use Load Testing Mobile Apps. But Made Easy guide as a reference.
For more information on JMeter Proxy Server configuration see:
HTTP(S) Test Script Recorder User Manual Entry
JMeter Proxy Step by Step PDF guide