The Compression property is used to indicate to
the server whether or not it is acceptable to compress the data that
is returned to the client. If compression is enabled, the client will
advertise that it will accept compressed data and the server will
decide whether a resource being requested can be compressed. If the
data is compressed, the control will automatically expand the data
before returning it to the caller.
Enabling compression does not guarantee that the data returned by
the server will actually be compressed, it only informs the server
that the client is willing to accept compressed data. Whether or not a
particular resource is compressed depends on the server configuration,
and the server may decide to only compress certain types of resources,
such as text files. Disabling compression informs the server that the
client is not willing to accept compressed data; this is the default.
This property value is only meaningful when downloading files from
an HTTP server that supports file compression. It has no effect on
file uploads or file transfers using FTP.