滑动窗口协议仿真,程序按照滑动窗口协议实现端对端的数据传送。包括协议的各种策略，如包丢失、停等应答、超时等都应有所仿真实现。-Sliding window protocol emulation, the program in accordance with the sliding window protocol to achieve end to end data transfer. Including the agreement of various strategies, such as p