This token specifies a URL from which Windows Media Player can download an update.

This token is defined for use only in responses sent to a client.<40>

The syntax of the version-url token is defined as follows.

version-url = "version-url=" %x22 httpurl %x22
httpurl     ; as defined in [RFC1738]

The following is an example.

Pragma: version-url=
"http://codecs.microsoft.com/isapi/mpupgrade.dll"