newyf_cun的专栏

1. socket设置选项总结：用法：   #include #include int getsockopt(int sock, int level, int optname, void *optval, socklen_t *optlen);int setsockopt(int sock, int level, int optname, const void *optval,

0. ASN.1的编码规则： 8 7 6 5 4 3 2 1 + Length + Content -------------------------------------------------------------------------|Class |X | Tag |