php + perl 上载工具源代码。用于大文件上载。上载时现实进度条，使上载用户知道上载进度以及剩余等待时间。-php tools available source code. For large file uploading. When the reality on the progress to be made on the users know on the progress and the remaining waiting time.

一个通过网络高速传输文件的控件： 具有以下特点 1.有高速数据传输功能，超过了Winsock控件的吞吐量 2.入校验功能，满足大数据包的收发，理论上不限数据尺寸 3.加入防错代码，提高了接口鲁棒性-through a network of high-speed transmission of documents, the controls : one with the following features. A high-speed data transmission funct

通常服务器同时与多个用户连接,用户之间共享带宽.如果N个用户的优先级都相同,那么每个用户连接到该服务器上的实际带宽就是服务器带宽的N分之一.可以想象,如果用户数目较多,则每个用户只能占有可怜的一点带宽,下载将会是个漫长的过程. -Usually the server with multiple users simultaneously connected users share the bandwidth, if N users have the same priority level, eac