WebSocket stress testing

Question

I would like to do some stress testing to a WebSocket based application. Anyone knows a tool that may help me in this task?

Update: I forgot to mention, but I'm favoring open source or free tools, given that the tests I'm performing are not for production.

Thanks, Luís M. Costa

Answer 1

You could adapt the Visual Studio test edition coded webtests to make socket load tests instead of http tests.

Instrumentation is done from perfmon stats and can be stored in a database for more complex reporting.

This is free with the Test Edition SKU or the full Visual Studio licence, so will not be applicable depending on your toolset.

Answer 2

The usual web tools for stress testing are based on pooling (for this I would recommend SoapUI). The idea is to measure the response time for a given request. I don't think this would help to test the actual Web Sockets behavior because that doesn't involve a request; the server just sends data when it is available.