session_dns() Function

The session_dns function resolves the IP address of the client associated with a specified session into its DNS name. The function returns a newly allocated string. You can use session_dns to change the numeric IP address into something more readable.

The session_maxdns function verifies that the client matches its claimed identity. The session_dns function does not perform this verification.

This function works only if the DNS directive is enabled in the magnus.conf file. For more information, see Appendix B, Alphabetical List of NSAPI Functions and Macros.

Syntax

char *session_dns(Session *sn);

Return Values

A string containing the host name, or NULL if the DNS name cannot be found for the IP address.

Parameters

Session *sn is the session.

The Session is the same parameter as the one passed to your SAF.