I am not to sure of what you are trying to do. If you are just trying to send a file somewhere and have another script do some manipulations on it, and you do not want any response back, then an easy thing to do (especial on unix) would be to use ftp to push the file and set up a cron job to periodically run the script.
For example you can have an import folder that the script would scan, if it finds a file it would do the manipulations and move it to a different folder. The cron job simply runs the script in given intervals that you determine adequate.
This is a very basic solution, but a common one with lots of documentation.

That being said, if you are looking for real-time type response then streaming the file via socks would be a better path.