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