We need to load test aspnetcore signalR application. I saw about crank but that
seems to help only with aspnet signalR. Can someone help me with this.
Most probably you need a load testing tool which supports WebSocket protocol as this is what SignalR will be doing by default.
It could be also Server Sent Events, Forever Frame or Long Polling so you need to clarify the NFRs and identify which protocols are in scope and what are the requirements which need to be tested.
Depending on your skills you can go for:
Gatling which has support of WebSocket, but you will need to do some programming in Scala
Apache JMeter which supports WebSocket via the plugin, JMeter allows you to create tests using simple GUI. You will be able to also test Long Polling and Server Sent Events using JMeter, check out How to Load Test Async Requests with JMeter for more details.
Related
I want to load test a web application server which communicates through gRPC (which uses HTTP/2 for transport) with the clients.
It seems that Gatling extended by the plugin Gatling-gRPC would be perfect for this. Among other things Gatling provides a Recorder which helps quickly generate scenarios by acting as a HTTP proxy between the client and the server.
Question 1: Is it possible to use the Gatling Recorder for recording the communication through the gRPC protocol?
Question 2: Is it possible to use the Gatling Recorder for recording the communication through the underlying HTTP/2 protocol?
I have tried already the Gatling Recorder to record the gRPC communication without success :-( Maybe caused by wrong configuration of the recorder?
No, it's not possible to record gRPC with Gatling's recorder atm:
it doesn't support HTTP/2
it doesn't support gatling-grpc which is a third-party plugin work (there's some ongoing work to contribute it upstream)
I have to connect an old but critical software to RabbitMQ. The software doesn't support AMQP, but it can do HTTP Requests.
Does RabbitMQ support plain HTTP? Or should I use a "proxy" or "app" that actively transforms the HTTP Requests to AMQP 1.0 and pushes it to the RabbitMQ server?
https://www.rabbitmq.com/management.html
The management plugin supports a simple HTTP API to send and receive messages. This is primarily intended for diagnostic purposes but can be used for low volume messaging without reliable delivery.
As mentioned, it's designed for very low loads, but it may be usable. If you need higher loads, then by all means cast around for a library that does the job and create a proxy. Most languages will have something. I've personally created a lightweight API using Lumen and https://github.com/bschmitt/laravel-amqp to tie a few disparate services together in the past, and it seems to work very well.
It is possible not but really recommended depending on load. You have three options really, two of which are web socket based and one that seems like what you're looking for. I'd suggest starting with the rabbitmq docs.
I need to find the most efficient way to communicate from an asp.net web server and a windows C++ application. The windows application does not have any permission to access the database of the asp.net web server.
When the user presses a button, that action with some bytes should be received by the C++ application.
In return, after processing the data on the C++ application, it will send back the result to the web server.
The only way I can think of at the moment is as following:
The asp.net web server will have two web service methods:
the C++ application will call that web service for a method for an interval. if there is a change, then the C++ application will process.
after the C++ application finished its process, it will call a method on that web service to inform about the result.
Any other ways to solve this kind of communication?
Thanks in advance.
If the C++ Application is also on Windows, named pipes would be a good solution. They can be configured to be durable so they can queue messages if either side is not ready to receive the message and they are quite easy to use. They basically look like files that you can read or write from and the data appears on the other side of the "pipe".
Take a look at the documentation (C++) here: http://msdn.microsoft.com/en-us/library/aa365781(v=VS.85).aspx
On the ASP.NET side you would use .NET API's. Here's a nice example to get you started: http://msdn.microsoft.com/en-us/library/bb546085.aspx (This example includes both client and server code.)
Named pipes would be a great solution if the C++ application is located in the same physical server as the ASP.NET application. In that case the OS would be just moving memory between processes for you so it could be very quick.
Additionally, I would configure the C++ Application as a Windows Service so it's always available and can be restarted when the server it's running on is restarted. If keeping it running is very important you could integrate Performance Counters and then have your ops team monitor the counters to make sure it is operating within expected thresholds.
The C++ application can also make a simple GET or POST request with enough information that the webserver can handle in case you don't want to expose a webservice.
You could use network sockets. It's been a long time since I have done anything with them so I can't be much help. Research Winsock (aka Windows Sockets API).
You could use WCF services and connect to them using your C++ client. You will have to research consuming WCF services from C++ client.
As #parapura suggested you could use simple HTTPRequest get & post methods. You could create your own http handler for these request to customize the response.
As you suggested you could use simple web services.
I have a system where clients connect via http streaming channels and use Producer and Consumer classes to dispatch and receive messages. I need to test the latency of messages in a way that adequately simulates real-world usage when the server is under load. I have 3 ideas for how this may be accomplished. Has anyone tried and succeeded or failed with these methods?
Use an out-of-the box test system like JMeter. Haven't found any that support streaming yet.
Use Selenium and FlexMonkey on BrowserMob to simulate actual users.
Use a client api (possibly from BlazeDS) that supports streaming and Flex messaging to write a custom testing framework. Haven't found a client api that supports streaming yet, any language would be OK.
There is a tool for testing the performance of BlazeDS/LCDS, created by Adobe. Take a look here (there is a PDF file called Adobe LiveCycle Data Services 3 ES2 Performance Brief in the PDF portofolio, having a couple of attachments) .
I'm in the process of building a test plan for validating the security of our Flex/J2EE application. I believe we have some issues with trusting the Flex application too much, but I need to be able to quantify those issues.
The ideal way would be a way to show me making data service calls outside of the application. Are there tools or instructions for how one might go about doing this? I really don't want to find these things out after we release to our beta customers. :)
Charles is an excellent HTTP debugging proxy which can parse AMF data and display it as a tree. You can also set "breakpoints" to intercept a HTTP call and modify the AMF data in either the request or response.
http://www.charlesproxy.com/
Fiddler on Windows is great for monitoring http connections.
First, give the port on which Flex communicates to the J2EE server, then using Ethereal or Wireshark you can watch if it use an encrypted channel :-)