rdp2tcp利用3389端口做隧道传输TCP链接的源代码，好不容易搞到的，是HTTP隧道的又一种新思路-rdp2tcp is a tunneling tool on top of remote desktop protocol (RDP). It uses RDP virtual channel capabilities to multiplex several ports forwarding over an already established rdesktop session.

此TCP C/S源码为多客户连接，通过创建多个线程创建不同客户，同时才有IO复用方式-The TCP C/S source code for a number of client connections, through the creation of multiple threads to create different customers, while only IO multiplex mode

UDP文件传输，实现 1、一个多路传输系统，能够将一个文件分割成多个子块； 2、通过不同的通信端口分别发送到服务器端，并在服务器端将该文件重新拼接在一起；-UDP file transfer, to achieve 1, a multiplex transmission system, the ability to split a file into a plurality of sub-blocks 2, sent by different communication ports,

基于linux平台的多路IO复用，使用了select和poll来实现(Multiplexing of multiplex IO based on Linux platform)