конвертировать адреса IPv4 и IPv6 из двоичной в текстовую форму (convert IPv4 and IPv6 addresses from binary to text form)
Имя (Name)
inet_ntop - convert IPv4 and IPv6 addresses from binary to text
form
Синопсис (Synopsis)
#include <arpa/inet.h>
const char *inet_ntop(int af, const void *restrict src,
char *restrict dst, socklen_t size);
Описание (Description)
This function converts the network address structure src in the
af address family into a character string. The resulting string
is copied to the buffer pointed to by dst, which must be a non-
null pointer. The caller specifies the number of bytes available
in this buffer in the argument size.
inet_ntop() extends the inet_ntoa(3) function to support multiple
address families, inet_ntoa(3) is now considered to be deprecated
in favor of inet_ntop(). The following address families are
currently supported:
AF_INET
src points to a struct in_addr (in network byte order)
which is converted to an IPv4 network address in the
dotted-decimal format, "ddd.ddd.ddd.ddd". The buffer dst
must be at least INET_ADDRSTRLEN bytes long.
AF_INET6
src points to a struct in6_addr (in network byte order)
which is converted to a representation of this address in
the most appropriate IPv6 network address format for this
address. The buffer dst must be at least INET6_ADDRSTRLEN
bytes long.
Возвращаемое значение (Return value)
On success, inet_ntop() returns a non-null pointer to dst. NULL
is returned if there was an error, with errno set to indicate the
error.
Ошибки (Error)
EAFNOSUPPORT
af was not a valid address family.
ENOSPC The converted address string would exceed the size given
by size.
Атрибуты (Attributes)
For an explanation of the terms used in this section, see
attributes(7).
┌───────────────────────────────┬───────────────┬────────────────┐
│Interface │ Attribute │ Value │
├───────────────────────────────┼───────────────┼────────────────┤
│inet_ntop() │ Thread safety │ MT-Safe locale │
└───────────────────────────────┴───────────────┴────────────────┘
Стандарты (Conforming to)
POSIX.1-2001, POSIX.1-2008. Note that RFC 2553 defines a
prototype where the last argument size is of type size_t. Many
systems follow RFC 2553. Glibc 2.0 and 2.1 have size_t, but 2.2
and later have socklen_t.
Ошибки (баги) (Bugs)
AF_INET6 converts IPv4-mapped IPv6 addresses into an IPv6 format.
Примеры (Examples)
See inet_pton(3).
Смотри также (See also)
getnameinfo(3), inet(3), inet_pton(3)
