On: WDT, a library to transfer files as fast as possib...

[IshKebab]

TCP sends data in-order but you don't need that for transferring a file. Hence you can do better than TCP.

[ldemailly → IshKebab]

http://udt.sourceforge.net/ is a solution using UDP but we decided that TCP with multiple flow was a better tradeoff for us (not to reinvent most of the window, congestion control, etc... of TCP)