Simulate a laptop behind a proxy server

I wrote a small java code that uploads a file to an ftp server. It's not working for people behind a proxy server, to debug, I'd like to simulate their conditions. What's the best way to do it? is there a proxy server I can download and setup so that my computer requires proxy setup t开发者_运维百科o access the network? Thanks a lot

You can use Squid for Windows, which is a very good proxy, but maybe the smaller CC Proxy is enough for your needs.