User`s guide

166

DAK

KwikNet Low Level Services

kn_inet_ntoa kn_inet_ntoa

Purpose Convert a Numeric IP Address to Dotted Decimal String Form

Used by

n Task o ISP o Timer Procedure n Restart Procedure n Exit Procedure

Setup Prototype is in file KN_API.H.

#include "KN_LIB.H"

int kn_inet_ntoa(struct in_addr *inadrp, char *sp);

Description Inadrp is a pointer to a structure containing an IPv4 address in net endian

form. The BSD structure in_addr is defined in Treck header file

TRSOCKET.H as follows:

struct in_addr {

u_long s_addr; /* IP address (net endian) */

};

is a pointer to storage for the string showing the IPv4 address in dotted

decimal form.

Returns The formatted string is stored at *sp and the length of that string is

returned. The length is a positive value. The string is terminated with a

'\0' character.

The IP address 0x7F000017 will produce the string "127.0.0.23".

Note Unlike its BSD counterpart inet_ntoa(), this KwikNet procedure is

reentrant. It also uses structure in_addr to hold the IP address.

Example See example in the description of kn_dprintf().