LLAPI - How can the server get the IP address of a connected webgl (websocket) connection?

I've done a lot of LLAPI testing recently (see my blog post about it, includes my test project) but it seems to me it's not currently possible for the server to query the LLAPI for the IP address of a connected webgl/websocket user.

Code (csharp):

1.  
2. case NetworkEventType.ConnectEvent:
3. ...
4.  NetworkTransport.GetConnectionInfo(tempHostID, outConnectionId, out client.ip, out clientPort, out clientNetID, out clientNodeID, out error);
5.                             if ((NetworkError)error != NetworkError.Ok)
6.                             {
7.                                 Log("NetworkTransport.GetConnectionInfo " + tempHostID + " - Error: " +  (NetworkError)error);
8.                             }
9.  

This code works perfectly on a non-webgl connection but on a webgl user will return: "Error: WrongOperation". Everything else works fine, the webgl user can connect and play the game with non-webgl users without problems.

Am I doing something wrong or Unity just doesn't give this info yet?