I am trying to capture a file that is downloadable from a web application. What steps can handle an http attachment?

My transformation has an HTTP post step successfully logging into the webapp, and a REST client step sending the request properly, but the attachment is not flowing through to my text file output step. The download request page itself is flowing through to my result, not the file attachment.

Any help is appreciated!

When manually doing the process with a browser, Chrome shows the following HTTP response headers for the download:

HTTP/1.1 200 OK
Date: Mon, 24 Sep 2012 21:55:19 GMT
Server: Apache
X-Frame-Options: DENY
Content-Disposition: attachment; filename="MyExportAsciiText.txt"
X-Powered-By: Servlet/2.4 JSP/2.0
Vary: Accept-Encoding
Content-Encoding: gzip
Keep-Alive: timeout=5, max=100
Connection: Keep-Alive
Transfer-Encoding: chunked
Content-Type: application/x-download