inet_pton

inet_pton(3)		  Linux Programmer’s Manual		 inet_pton(3)



NAME
       inet_pton - Create a network address structure

SYNOPSIS
       #include <sys/types.h>
       #include <sys/socket.h>
       #include <arpa/inet.h>

       int inet_pton(int af, const char *src, void *dst);

DESCRIPTION
       This function converts the character string src into a network address
       structure in the af address family, then copies	the  network  address
       structure to dst.

       inet_pton(3)  extends  the  inet_addr(3)	 function to support multiple
       address families, inet_addr(3) is now considered to be  deprecated  in
       favor  of  inet_pton(3).	 The following address families are currently
       supported:

       AF_INET
	      src points to a character string	containing  an	IPv4  network
	      address  in  the	dotted-quad  format,  "ddd.ddd.ddd.ddd".  The
	      address is converted to a struct in_addr	and  copied  to	 dst,
	      which must be sizeof(struct in_addr) bytes long.

       AF_INET6
	      src  points  to  a  character string containing an IPv6 network
	      address in any allowed IPv6 address  format.   The  address  is
	      converted to a struct in6_addr and copied to dst, which must be
	      sizeof(struct in6_addr) bytes long.

       Certain legacy hex and octal formats of AF_INET addresses are not sup-
       ported by inet_pton, which rejects them.

RETURN VALUE
       inet_pton  returns  a negative value and sets errno to EAFNOSUPPORT if
       af does not contain a valid address family.  0 is returned if src does
       not contain a character string representing a valid network address in
       the specified address family.  A positive value	is  returned  if  the
       network address was successfully converted.

SEE ALSO
       inet_ntop(3)

BUGS
       AF_INET6	 does  not recognize IPv4 addresses.  An explicit IPv6-mapped
       IPv4 address must be supplied in src instead.



Linux Man Page			  2000-12-18			 inet_pton(3)