Hi Guys

I have a controller that makes a connection to a url to retrieve a csv file.

I am able to send the file in the response using the following code, this works fine.

    def fileURL = "www.mysite.com/input.csv"
    def thisUrl = new URL(fileURL);
    def connection = thisUrl.openConnection();
    def output = connection.content.text;

    response.setHeader "Content-disposition", "attachment;
    filename=${'output.csv'}"
    response.contentType = 'text/csv'
    response.outputStream << output
    response.outputStream.flush()

However I don't think this method is inappropriate for a large file, as the whole file is loaded into the controllers memory.

I want to be able to read the file chunk by chunk and write the file to the response chunk by chunk.

Any ideas?