资 源 简 介
资源描述socket连接，使用ssl建立安全通道，传输数据,压缩包括里面包含client和server及相关证书。
目录结构：
gen_ca.sh: used to generate a ca cert
gen_subcert.sh: used to generate a sub cert from ca
Makefile: used to generate app_client and app_server by client.c and server.c
client.c:the client use ssl to transfer data
server.c: the server use ssl to transfer data
