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 supported 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)
