i need an open source app (c# or c++ ) that grab all windows http traffic and forward to an http proxy there is an app name Proxifier do this but i want open source project to embed to my app or at least a free commandline program that do this thanks so much
You can use Fiddler2 to first intercept web traffic and force it to your own proxy.
Tools > Options > Gateway and set your proxy.
Or consume FiddlerCore in your own app.
Commandline wise I can recommend proxychains.
http://proxychains.sourceforge.net/
For a full blown proxying solution you might want to look into Privoxy.
http://www.privoxy.org/
There is also squid proxy for instance and many other solutions. The solutions I mentioned are rather unix/linux centric so you might need cygwin or similar to drive this.
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