inet_ntop - Parse network address structures
const char *p=inet_ntop(int af, const void *src,
char *dst, size_t cnt);
This function converts the network address structure src in the af
address family into a character string, which is copied to a character buffer
dst, which is cnt bytes long.
inet_ntop(3) 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(3). The following address
families are currently supported:
- src points to a struct in_addr (network byte order format)
which is converted to an IPv4 network address in the dotted-quad format,
"ddd.ddd.ddd.ddd". The buffer buf must be at least
INET_ADDRSTRLEN bytes long.
- src points to a struct in6_addr (network byte order format)
which is converted to a representation of this address in the most
appropriate IPv6 network address format for this address. The buffer
buf must be at least INET6_ADDRSTRLEN bytes long.
inet_ntop returns a non-null pointer to buf. NULL is returned if
there was an error, with errno set to EAFNOSUPPORT if af
was not set to a valid address family, or to ENOSPC if the converted
address string would exceed the size of buf, given by the cnt
AF_INET6 converts IPv6-mapped IPv4 addresses into an IPv6 format.