Having issue for load test scripting for application implemented using silverlight and CSLA

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We are testing application which is implemented using Silverlight. The development team has used CSLA for encryption and decryption of request and response body. A message body is in an encrypted format, we are facing issues for co-relation and parameterization. Anyone having experience of load testing for such kind of application? We are using VSTS 2015

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Andy On

Csla is not an encryption; rather it is a framework for development of business objects. One of the key features is that the object can move across the network, so that the same business rules run on both the Silverlight client and the Asp.net server (which is where you data access will occur). It does this by serializing the objects using HTTP, WCF or some other protocol back and forth.

If the calls you are load testing do not require a user to be authenticated, you should be able to capture them with something like Fiddler and replace them. If the calls are authenticated, you may encounter issues as Csla automatically can serialize the Silverlight appdomain's IPrincipal so its available on the server as well. That may or may not cause problems with your load testing, but it would depend on how exactly the authorization and authentication was implemented.