UPnp request windows phone 8

Question

I'm trying to do a simple DLNA/UPnp app for windows phone 8. All I got now is a "device explorer" app, which it send a XML in broadcast in specific port over Udp and get responses from all DLNA devices.

What I want to do next is to send a request to one of this devices. It must be over Udp (to be UPnp compliant) and the request is an XML too. My problem is that when I send the broadcast message, I use this:

sendEvent = new SocketAsyncEventArgs();
sendEvent.RemoteEndPoint = new IPEndPoint(IPAddress.Parse("239.255.255.250"), 1900);
[...]

But in the request ( as I did understand well ), I must send it to an adress like:

http: //19...:2869/upnphost/udhisapi.dll?event=uuid:9f7f98d8-2e8e-495c-9126-02a9f8d8b253+urn:upnp-org:serviceId:ContentDirectory

that is supose to be listening.

I don't know how to achieve this in Windows phone, as I supose that WebClient goes over TCP. Any Ideas?

Thanks in advance

Answer 1

Inferring from your URL line:

http ://19...:2869/upnphost/udhisapi.dll?event=uuid:9f7f98d8-2e8e-495c-9126-02a9f8d8b253+urn:upnp-org:serviceId:ContentDirectory

You're trying to subscribe the eventing of ContentDirectoryService in a Windows Media Server.

I understand the ABS_PATH in SUBSCRIBE ABS_PATH HTTP/1.1 is really confusing in many senerio, for some standard httpClient implementation usually accept URL only and parse into HOST and REL_PATH.

Not familiar with C#, but in this Is there a way to do a PUT with WebClient? there's a way to override WebClient.UploadString Method, so you can write your own method and path.