Sun Java System Web Server 7.0 Update 4 NSAPI Developer's Guide

net_ip2host() Function

The net_ip2host function transforms a textual IP address into a fully qualified domain name and returns the name.

Note –

This function works only if the DNS directive is enabled in the magnus.conf file.


char *net_ip2host(char *ip, int verify);

Return Values

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 verification requires an extra query, you should use it when checking the access control.