实现两台计算机之间的文件传输功能,软件既可以作服务器，也可以作客户端。传输文件时，两台电脑上运行同样的程序，而不是一个电脑上运行服务器程序，另一个电脑上运行客户端程序。-File transfer capabilities between two computers, software either as server or as a client. When transferring files, both run on the same computer program, rather th