How to natively enable JSONP for existing WCF service?

Question

I have a an existing service like the below method:

[AspNetCompatibilityRequirements(RequirementsMode = AspNetCompatibilityRequirementsMode.Allowed)]
[Servic         


        

Answer 1

Update your config to look like:

See here for a blog post providing a walkthrough of creating a wcf service that's accessible cross-domain.

This will enable your service to accept requests from cross-domain sources.

In terms of determining whether to pad your response (the p in jsonp),

Thanks to @carlosfigueira for this:

If using .Net 4 JSONP is supported natively. As long as the request has a query string parameter called "callback" (this name can be configured), the response will be padded with the function name .

Otherwise, you'll need to write a custom message inspector that pads the response appropriately.