Find all IPs in a subnet

问题:

I am developing a part of code using C++ for our project, my code must return a list of all available IPs in a subnet, so I have this scenario:

1. Get my subnet.

2. Test every IP in subnet using a for loop, e.g.:

   for (int i = 0; i < 254; i++)
   {
       testip(X, X, X, i);
       /* if IP is valid */
       vectoriplist.push_back(X, X, X, i);
   }
   

For find subnet I think I will use IPnetwork utility, but I still have another problem and it's how I can test if the IP is valid on the subnet. I try to use boost.asio, but I cannot find anything.

回答1:

i found a solution :

i use coonect() and getpeername() functions in for loop . to get all valid ip addresses in a subnet