"Content Encoding Error" when I try to gzip the output

Question

I'm trying to gzip the output of my controller action to save some bandwidth:

new ByteArrayOutputStream().withStream{ baos ->
  new GZIPOutputStream( baos ).withWriter{ it << m.text.bytes }
  //def gzip = baos.toByteArray().encodeBase64()
  def gzip = new String( baos.toByteArray() )
  response.setHeader 'Content-Type', 'application/x-javascript'
  response.setHeader 'Content-Encoding', 'x-gzip'
  response.outputStream.withStream{ it << gzip }
}

}

when I open the url in a browser it gives me

Unknown Error: net::ERR_CONTENT_DECODING_FAILED

in IE or

Content Encoding Error

in FF

What am I missing?

Answer 1

    def index() {
            response.setHeader 'Content-Type', 'application/x-javascript'
            response.setHeader 'Content-Encoding', 'x-gzip'
            new GZIPOutputStream(response.outputStream).withWriter{ it << "Content comes here" }
    }

also consider using the capabilities of a webserver in front of your webapp (e.g. apache's gzip module can handle things like this way better). you would also have to check for the capabilities of the client first (Accept-Encoding header in the client request)