不错的基于socket编程的点对点CSharp开发的文件传输，不是FTP形式的。-good socket programming based on the point-to-point CSharp development of the document transmission, FTP is not the form.

高度模仿qq的客户端程序，采用socket编程实现，平台vs2008，包含点对点文字通讯、点对点图片传输、点对点ftp传输，并可根据ip添加好友。-Highly imitate qq client program using socket programming, platforms, vs2008, including peer-to-peer text messaging, point-to-point image transfer, peer-to-peer ftp transfer, a