HttpRequest: weird use case

Heya, I'm working on a stream wrapper for Rackspace Cloudfiles. It's got a REST interface, which brings me here. Imagine I've got a clever script to save something from a stream to a container in cloudfiles. Using it might look like: $ mysqldump -a | gzip -c | cfpipe.php /container/path/to/backup.sql.gz All cfphipe.php does is copy(STDIN, 'rscf://container/path/to/backup.sql.gz'). Current implementations either hold the whole stream in memory or save it to a temp file. Rackspace supports sending the files using Transfer-Encoding: chunked, which avoids this overhead. What I need to do is: authenticate open connection send headers with Transfer-Enconding: chunked stream chunk see if total transfered > 5. stream chunk ...... nnn. stream last chunk nnn+1. read response and compare checksum