CODEWITHSUNDEEP
c#web-serviceswcfsoap
Hitesh
Hitesh

Reputation: 1077

Execute a SOAP based web services dynamically without generating proxy

In my application, end user can fetch the data from any SOAP based web services and use it in the application. The application provides an option to register the service on fly. The application examine the service, show available operations along with parameter, finally execute the selected operation and use the response, of course everything will be on the fly. There are few steps need to be follow in order to achive that:

  1. Discover the service through WSDL
  2. Examine it and select a method
  3. Build required parameter values
  4. Execute the service
  5. Handle the response

I am able to discover the service on the fly using some WCF classes like DiscoveryClientProtocol, WsdlImporter, ServiceDescription, ServiceContractGenerator, etc. Now, I want to execute them and take the response XML that is available inside SOAP Body.

I am able to execute it by generating the Assembly at runtime using above library and execute a method through reflection. This solution works fine if I have to do everything in single-shot on a box. But it adds complexity when we scale-out. That means, one server generates the proxy, another one use the proxy and consume the services.

Yes, we can keep newly generated assembly somewhere in shared location and use them. But I want to avoid them. We want to keep service definition locally somewhere in DB, execute it without generating assembly and just consume the XML available inside SOAP body.

Appreciate the advice in advance on how to achieve this?

Upvotes: 2

Views: 1434

Answers (2)

fatih saki
fatih saki

Reputation: 31

You can implement ChannelFactory to your abstract generic BaseFactory class which has override CreateDescription method to set Binding and Endpoint for ChannelFactory.ServiceEndpoint. You can pass your configuration interface which has Binding, Endpoint and Credentials to this abstract class. So you can have a dynamic proxy for a wcf service.

Upvotes: 0

Jack Ukleja
Jack Ukleja

Reputation: 13511

To communicate with WCF services without code generation you use the ChannelFactory< T > where T is the service interface.

Obviously in your case the service interface is not known at compile time so your objective would be to dynamically generate this type, or better yet use a custom ChannelFactory implementation that does not rely on strong typing and lets you call methods in a dynamic or programmatic way.

You can use the WsdlImporter to import the WSDL at runtime and which can give you the ContractDescriptions. From there you might be able to use ContractType as your service interface but I'm not sure. You may need to write your own ChannelFactory...

Upvotes: 1

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