package Socket;
-use vars qw($VERSION @ISA @EXPORT);
-$VERSION = "1.5";
+use vars qw($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS);
+$VERSION = "1.7";
=head1 NAME
$proto = getprotobyname('tcp');
socket(Socket_Handle, PF_INET, SOCK_STREAM, $proto);
- $port = getservbyname('smtp');
+ $port = getservbyname('smtp', 'tcp');
$sin = sockaddr_in($port,inet_aton("127.1"));
$sin = sockaddr_in(7,inet_aton("localhost"));
$sin = sockaddr_in(7,INADDR_LOOPBACK);
far more likely chance of getting the numbers right. This includes
all of the commonly used pound-defines like AF_INET, SOCK_STREAM, etc.
+Also, some common socket "newline" constants are provided: the
+constants C<CR>, C<LF>, and C<CRLF>, as well as C<$CR>, C<$LF>, and
+C<$CRLF>, which map to C<\015>, C<\012>, and C<\015\012>. If you do
+not want to use the literal characters in your programs, then use
+the constants provided here. They are not exported by default, but can
+be imported individually, and with the C<:crlf> export tag:
+
+ use Socket qw(:DEFAULT :crlf);
+
In addition, some structure manipulation functions are available:
+=over
+
=item inet_aton HOSTNAME
Takes a string giving the name of a host, and translates that
to the 4-byte string (structure). Takes arguments of both
the 'rtfm.mit.edu' type and '18.181.0.24'. If the host name
-cannot be resolved, returns undef.
+cannot be resolved, returns undef. For multi-homed hosts (hosts
+with more than one address), the first address found is returned.
=item inet_ntoa IP_ADDRESS
allows you to bind to all of them simultaneously.)
Normally equivalent to inet_aton('0.0.0.0').
+=item INADDR_BROADCAST
+
+Note: does not return a number, but a packed string.
+
+Returns the 4-byte 'this-lan' ip broadcast address.
+This can be useful for some protocols to solicit information
+from all servers on the same LAN cable.
+Normally equivalent to inet_aton('255.255.255.255').
+
=item INADDR_LOOPBACK
Note - does not return a number.
Note - does not return a number.
-Returns the 4-byte invalid ip address. Normally equivalent
+Returns the 4-byte 'invalid' ip address. Normally equivalent
to inet_aton('255.255.255.255').
=item sockaddr_in PORT, ADDRESS
and returns the pathname. Will croak if the structure does not
have AF_UNIX in the right place.
+=back
+
=cut
use Carp;
inet_aton inet_ntoa pack_sockaddr_in unpack_sockaddr_in
pack_sockaddr_un unpack_sockaddr_un
sockaddr_in sockaddr_un
- INADDR_ANY INADDR_LOOPBACK INADDR_NONE
+ INADDR_ANY INADDR_BROADCAST INADDR_LOOPBACK INADDR_NONE
AF_802
AF_APPLETALK
AF_CCITT
AF_UNIX
AF_UNSPEC
AF_X25
+ IOV_MAX
+ MSG_BCAST
+ MSG_CTLFLAGS
+ MSG_CTLIGNORE
+ MSG_CTRUNC
MSG_DONTROUTE
+ MSG_DONTWAIT
+ MSG_EOF
+ MSG_EOR
+ MSG_ERRQUEUE
+ MSG_FIN
MSG_MAXIOVLEN
+ MSG_MCAST
+ MSG_NOSIGNAL
MSG_OOB
MSG_PEEK
+ MSG_PROXY
+ MSG_RST
+ MSG_SYN
+ MSG_TRUNC
+ MSG_URG
+ MSG_WAITALL
PF_802
PF_APPLETALK
PF_CCITT
PF_UNIX
PF_UNSPEC
PF_X25
+ SCM_CONNECT
+ SCM_CREDENTIALS
+ SCM_CREDS
+ SCM_RIGHTS
+ SCM_TIMESTAMP
SOCK_DGRAM
SOCK_RAW
SOCK_RDM
SO_SNDTIMEO
SO_TYPE
SO_USELOOPBACK
+ UIO_MAXIOV
+);
+
+@EXPORT_OK = qw(CR LF CRLF $CR $LF $CRLF);
+
+%EXPORT_TAGS = (
+ crlf => [qw(CR LF CRLF $CR $LF $CRLF)],
+ all => [@EXPORT, @EXPORT_OK],
);
+BEGIN {
+ sub CR () {"\015"}
+ sub LF () {"\012"}
+ sub CRLF () {"\015\012"}
+}
+
+*CR = \CR();
+*LF = \LF();
+*CRLF = \CRLF();
+
sub sockaddr_in {
if (@_ == 6 && !wantarray) { # perl5.001m compat; use this && die
my($af, $port, @quad) = @_;