class Gzip

def inflate(body)
  # Inflate as a DEFLATE (RFC 1950+RFC 1951) stream
  Zlib::Inflate.inflate(body)
rescue Zlib::DataError
  # Fall back to inflating as a "raw" deflate stream which
  # Microsoft servers return
  inflate = Zlib::Inflate.new(-Zlib::MAX_WBITS)
  begin
    inflate.inflate(body)
  ensure
    inflate.close
  end
end