Container IDs for UPnP devices

A device that supports PnP extensions (PnP-X) and Universal PnP (UPnP) can specify a container ID by including the X_containerId XML element in the device description document. For more information about UPnP and the UPnP device description document, refer to the UPnP Device Architecture specification.

The X_containerId XML element is declared as follows:

<df:X_containerId xmlns:df="">
  xs:string
</df:X_containerId>

The X_containerId XML element type is a string, for which the value is a globally unique identifier (GUID). This string is formatted as {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}.

The following is an example of an X_containerId XML element.

<df:X_containerId xmlns:df="">
  {101392d0-5e91-11dd-ad8b-0800200c9a66}
</df:X_containerId>

The X_containerId XML element is required to be in the <device> section of the UPnP device description document. The following example shows the correct placement of the X_containerId element in a device description document.

<?xml version="1.0" ?>
<root
 xmlns="urn:schemas-upnp-org:device-1-0"
 xmlns:df=
 "http://schemas.microsoft.com/windows/2008/09/devicefoundation">

 <specVersion>
        <major>major version number</major>
        <minor>minor version number</minor>
    </specVersion>

    <URLBase>device URL</URLBase>

    <device>
 <!-- Place device metadata here. See UPnP spec for details.-->
        <df:X_containerID>
 <!--- Place the ContainerID GUID here.--->
 {101392d0-5e91-11dd-ad8b-0800200c9a66}
      </ df:X_containerID >

    </device>
</root>

If the UPnP device description document does not include the X_containerId XML element, the Plug and Play (PnP) manager generates a container ID through the device's Unique Device Name (UDN).