EDNS0(DNS 扩展机制)的数据报格式是什么样的呢?
恳请各位达人知道EDNS0数据报头格式的,给一个下吗,下面是一般的查询报文的格式typedef struct dns
{
unsigned short id;
unsigned short flags;
unsigned short quests;
unsigned short answers;
unsigned short author;
unsigned short addition;
}DNS,*PDNS;
typedef struct query
{
unsigned short type;
unsigned short classes;
}QUERY,*PQUERY;
EDNS0的报文格式 是什么呢,是不是在查询报头上面添加特殊标志合标记呢?谢谢
补充:云计算 , 云安全