class Rack::Deflater::GzipStream

sync :: Whether to flush each gzip chunk as soon as it is ready.
modification time in the gzip header.
mtime :: The modification time of the body, used to set the
body :: Response body to compress with gzip
Initialize the gzip stream. Arguments:

def initialize(body, mtime, sync)
  @body = body
  @mtime = mtime
  @sync = sync
end