Question

I’ve got a WCF-hosted service right now which is self-hosted and defined like this:

[OperationContract]
[WebInvoke(RequestFormat = WebMessageFormat.Json, Method = "PUT", UriTemplate = "/device")]
void updateDeviceLevel(ZDevice device);

The ZDevice class looks like this:

public class ZDevice {
    public bool? newPowerState { get; set; }
    public int nodeId {get; set;}
}

I have a simple Mac client which consumes the service by using an http post. It posts {"newLevel":27,"nodeId":6} to the \devices url and .NET magically stuffs the values into a ZDevice object for me. All is well here.

Now however, I need to add some basic security to the mix. I’ve done this by adding a new parameter and some “RequestWrapping” to the method call:

[OperationContract]
[WebInvoke(RequestFormat = WebMessageFormat.Json, BodyStyle=WebMessageBodyStyle.WrappedRequest, Method = "PUT", UriTemplate = "/device")]
void updateDeviceLevel(string password, ZDevice device);

What I’m trying to do now is figure out what syntax the server is expecting from the consuming clients. I’d hoped that posting in {"password":"somepwd", "newLevel":27,"nodeId":6} would work, but .NET is no longer able to “deserialize” that into the ZDevice object like it did before.

Anyone got some suggestions for me?

Thanks

Answer 1

It should look like this:

{"password":"somepwd", "device": {"newLevel":27,"nodeId":6}}

Each property on the JSON object has a value; and in the case of device it’s just a new object.

Note that in your ZDevice class you called it newPowerState, but in JSON you are calling it newLevel. In your class it’s also a bool, but in JSON you are assigning it an int. Something isn’t matching up.

Based on your C#, I’d expect it to look like this:

{"password":"somepwd", "device": {"newPowerState":true,"nodeId":6}}

The property names in your JSON object should match the parameter / property names in C#.