NAME
POSIX::1003::Socket - POSIX constants and functions related to sockets
SYNOPSIS
# SOCKET support
use POSIX::1003::Socket; # load all names
socket(Server, PF_INET, SOCK_STREAM, $proto);
setsockopt(Server, SOL_SOCKET, SO_REUSEADDR, 1);
use POSIX::1003::Socket qw(SOCK_DGRAM);
print SOCK_DGRAM; # constants are subs
use POSIX::1003::Socket '%socket';
my $bits = $socket{SOCK_DGRAM};
$socket{SOCK_DGRAM} = $bits;
print "$_\n" for keys %socket;DESCRIPTION
[added in release 0.99] This module provides access to the "socket" interface, especially a long list of constants starting with SO_, SOL_, SOCK_, AF_, and many more.
The best way to work with sockets is via IO::Socket::IP. This module provides many more constants than those modules do, but currently does not export the functions as the other modules of this suite do.
The advantage of using the constants of this module, is that the list will be extended when new names are discovered, and then immediately available to older versions of Perl.
METHODS
FUNCTIONS
Standard POSIX
Many socket related functions are contained in Perl's core.
- $obj->getsockopt($socket, $level, $opt)
-
Returns the value for $opt (some SO_ constant). See also setsockopt().
- $obj->setsockopt($socket, $level, $opt, $value)
-
Set the $value on $opt for the $socket.
There are a few minor tricks to make this function integrate better in Perl. Firstly, for the boolean OPTs
SO_DONTROUTE,SO_KEEPALIVE, andSO_REUSEADDRthe value is treated as a real Perl boolean.SO_LINGERhas three combinations. "Linger off" is reprensed by Other values mean "linger on" with a timeout.SO_RCVTIMEOandSO_SNDTIMEget a timestamp in float.
Additional
CONSTANTS
- %socket
-
This exported variable is a tied HASH which maps
SO*andAF_*names to numbers, to be used with various socket related functions.
The following constants where detected on your system when the module got installed. The second column shows the value which where returned at that time.
export tag :so
SO_ACCEPTCONN 30
SO_ATTACH_FILTER 26
SO_BINDTODEVICE 25
SO_BROADCAST 6
SO_DEBUG 1
SO_DETACH_FILTER 27
SO_DOMAIN 39
SO_DONTROUTE 5
SO_ERROR 4
SO_KEEPALIVE 9
SO_LINGER 13
SO_MARK 36
SO_NO_CHECK 11
SO_NOFCS 43
SO_OOBINLINE 10
SO_PASSCRED 16
SO_PASSSEC 34
SO_PEEK_OFF 42
SO_PEERCRED 17
SO_PEERNAME 28
SO_PEERSEC 31
SO_PRIORITY 12
SO_PROTOCOL 38
SO_RCVBUF 8
SO_RCVBUFFORCE 33
SO_RCVLOWAT 18
SO_RCVTIMEO 20
SO_REUSEADDR 2
SO_RXQ_OVFL 40
SO_SECURITY_AUTHENTICATION 22
SO_SECURITY_ENCRYPTION_NETWORK 24
SO_SECURITY_ENCRYPTION_TRANSPORT 23
SO_SNDBUF 7
SO_SNDBUFFORCE 32
SO_SNDLOWAT 19
SO_SNDTIMEO 21
SO_TIMESTAMP 29
SO_TIMESTAMPING 37
SO_TIMESTAMPNS 35
SO_TYPE 3
SO_WIFI_STATUS 41export tag :sol
SOL_AAL 265 SOL_IP 0 SOL_RAW 255
SOL_ATM 264 SOL_IPV6 41 SOL_SOCKET 1
SOL_DECNET 261 SOL_IRDA 266 SOL_X25 262
SOL_ICMPV6 58 SOL_PACKET 263 export tag :sock
AI_ADDRCONFIG 32
AI_ALL 16
AI_CANONIDN 128
AI_CANONNAME 2
AI_IDN 64
AI_IDN_ALLOW_UNASSIGNED 256
AI_IDN_USE_STD3_ASCII_RULES 512
AI_NUMERICHOST 4
AI_NUMERICSERV 1024
AI_PASSIVE 1
AI_V4MAPPED 8
EAI_ADDRFAMILY -9
EAI_AGAIN -3
EAI_BADFLAGS -1
EAI_FAIL -4
EAI_FAMILY -6
EAI_NODATA -5
EAI_NONAME -2
EAI_SERVICE -8
EAI_SOCKTYPE -7
EAI_SYSTEM -11
INADDR_ANY 0
INADDR_BROADCAST 4294967295
INADDR_LOOPBACK 2130706433
INADDR_NONE 4294967295
IOV_MAX 1024
IP_HDRINCL 3
IP_MTU_DISCOVER 10
IP_OPTIONS 4
IP_RECVOPTS 6
IP_RECVRETOPTS 7
IP_RETOPTS 7
IP_TOS 1
IP_TTL 2
IPPROTO_ICMP 1
IPPROTO_IP 0
IPPROTO_IPV6 41
IPPROTO_RAW 255
IPPROTO_TCP 6
IPPROTO_UDP 17
IPV6_ADD_MEMBERSHIP 20
IPV6_DROP_MEMBERSHIP 21
IPV6_MTU 24
IPV6_MTU_DISCOVER 23
IPV6_MULTICAST_HOPS 18
IPV6_MULTICAST_IF 17
IPV6_MULTICAST_LOOP 19
IPV6_UNICAST_HOPS 16
IPV6_V6ONLY 26
MSG_CTRUNC 8
MSG_DONTROUTE 4
MSG_DONTWAIT 64
MSG_EOR 128
MSG_ERRQUEUE 8192
MSG_FIN 512
MSG_NOSIGNAL 16384
MSG_OOB 1
MSG_PEEK 2
MSG_PROXY 16
MSG_RST 4096
MSG_SYN 1024
MSG_TRUNC 32
MSG_WAITALL 256
NI_DGRAM 16
NI_IDN 32
NI_IDN_ALLOW_UNASSIGNED 64
NI_IDN_USE_STD3_ASCII_RULES 128
NI_NAMEREQD 8
NI_NOFQDN 4
NI_NUMERICHOST 1
NI_NUMERICSERV 2
SCM_CREDENTIALS 2
SCM_RIGHTS 1
SCM_TIMESTAMP 29
SHUT_RD 0
SHUT_RDWR 2
SHUT_WR 1
SOCK_CLOEXEC 524288
SOCK_DCCP 6
SOCK_DGRAM 2
SOCK_NONBLOCK 2048
SOCK_PACKET 10
SOCK_RAW 3
SOCK_RDM 4
SOCK_SEQPACKET 5
SOCK_STREAM 1
SOMAXCONN 128
UIO_MAXIOV 1024export tag :af
AF_ALG 38 AF_INET 2 AF_PACKET 17
AF_APPLETALK 5 AF_INET6 10 AF_PHONET 35
AF_ASH 18 AF_IPX 4 AF_PPPOX 24
AF_ATMPVC 8 AF_IRDA 23 AF_RDS 21
AF_ATMSVC 20 AF_ISDN 34 AF_ROSE 11
AF_AX25 3 AF_IUCV 32 AF_ROUTE 16
AF_BLUETOOTH 31 AF_KEY 15 AF_RXRPC 33
AF_BRIDGE 7 AF_LLC 26 AF_SECURITY 14
AF_CAIF 37 AF_LOCAL 1 AF_SNA 22
AF_CAN 29 AF_MAX 40 AF_TIPC 30
AF_DECnet 12 AF_NETBEUI 13 AF_UNIX 1
AF_ECONET 19 AF_NETLINK 16 AF_UNSPEC 0
AF_FILE 1 AF_NETROM 6 AF_WANPIPE 25
AF_IEEE802154 36 AF_NFC 39 AF_X25 9export tag :pf
PF_ALG 38 PF_INET 2 PF_PACKET 17
PF_APPLETALK 5 PF_INET6 10 PF_PHONET 35
PF_ASH 18 PF_IPX 4 PF_PPPOX 24
PF_ATMPVC 8 PF_IRDA 23 PF_RDS 21
PF_ATMSVC 20 PF_ISDN 34 PF_ROSE 11
PF_AX25 3 PF_IUCV 32 PF_ROUTE 16
PF_BLUETOOTH 31 PF_KEY 15 PF_RXRPC 33
PF_BRIDGE 7 PF_LLC 26 PF_SECURITY 14
PF_CAIF 37 PF_LOCAL 1 PF_SNA 22
PF_CAN 29 PF_MAX 40 PF_TIPC 30
PF_DECnet 12 PF_NETBEUI 13 PF_UNIX 1
PF_ECONET 19 PF_NETLINK 16 PF_UNSPEC 0
PF_FILE 1 PF_NETROM 6 PF_WANPIPE 25
PF_IEEE802154 36 PF_NFC 39 PF_X25 9SEE ALSO
This module is part of POSIX-1003 distribution version 0.99_01, built on January 31, 2015. Website: http://perl.overmeer.net. The code is based on POSIX, which is released with Perl itself. See also POSIX::Util for additional functionality.
COPYRIGHTS
Copyrights 2011-2015 on the perl code and the related documentation by [Mark Overmeer]. For other contributors see ChangeLog.
This program is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See http://www.perl.com/perl/misc/Artistic.html