GNU/Linux man pages
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GNU/Linux |
CentOS 5.1 |
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inet_pton(3) |
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inet_pton − Create a network address structure
#include
<sys/types.h>
#include <sys/socket.h>
#include <arpa/inet.h>
int inet_pton(int af, const char *src, void *dst);
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.
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.
POSIX.1-2001.
inet_ntop(3)
AF_INET6 does not recognize IPv4 addresses. An explicit IPv6-mapped IPv4 address must be supplied in src instead.
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inet_pton(3) | |