unpack_sockaddr_in#

Split a packed sockaddr_in back into its port and 4-byte address.

Σύνοψη#

my ($port, $packed_ipv4) = unpack_sockaddr_in($sockaddr);

Τι επιστρέφεται#

A two-element list: the port as an integer, the address as a 4-byte packed string. Feed the second through inet_ntoa to see it as dotted-quad. When the input is shorter than a sockaddr_in, both elements come back as undef.

Παραδείγματα#

my $peer = getpeername($sock);
my ($port, $ip) = unpack_sockaddr_in($peer);
printf "connected from %s:%d\n", inet_ntoa($ip), $port;

Οριακές περιπτώσεις#

  • Input shorter than sockaddr_in yields (undef, undef) rather than croaking - check the first return value before using it.

  • The address family byte in the input is not validated; the caller is expected to have an IPv4 sockaddr in hand.

Διαφορές από το upstream#

Fully compatible with upstream Socket.

Δείτε επίσης#

  • pack_sockaddr_in - reverse direction.

  • sockaddr_family - read just the family byte without unpacking.

  • unpack_sockaddr_in6 - IPv6 counterpart.

  • inet_ntoa - turn the returned packed address into a string.