The net_ip2host function transforms a textual IP address into a fully-qualified domain name and returns it.
This function works only if the DNS directive is enabled in the magnus.conf file.
char *net_ip2host(char *ip, int verify);
A new string containing the fully-qualified domain name if the transformation is accomplished, or NULL if the transformation is not accomplished.
char *ip is the IP address as a character string in dotted-decimal notation: nnn.nnn.nnn.nnn
int verify, if nonzero, specifies that the function should verify the fully-qualified domain name. Though this requires an extra query, you should use it when checking the access control.