https://blog.csdn.net/Yansky58685/article/details/98118124?utm_medium=distribute.pc_relevant_t0.none-task-blog-BlogCommendFromMachineLearnPai2-1.channel_param&depth_1-utm_source=distribute.pc_relevant_t0.none-task-blog-BlogCommendFromMachineLearnPai2-1.channel_param
大话七层协议 https://blog.csdn.net/taotongning/article/details/81352985
