In a recursive query, the client expects the server to respond the full answer ( i.e., to resolve a name to the IP address). 在递归查询中,客户端预期服务器响应完整的答案(即,将某个名称解析为IP地址)。
Remember that when a program makes a function call ( especially for recursive ones), it has to store its return address and local variables on the stack. 记住当程序进行函数调用(特别是针对递归函数)时,它必须在堆栈上存储返回地址和本地变量。
Study of how to convert recursive algorithm without return address 无返回地址的递归消除方法研究