'\" t
.\" Copyright (c) 1983, 1991 The Regents of the University of California.
.\" All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\" 1. Redistributions of source code must retain the above copyright
.\"    notice, this list of conditions and the following disclaimer.
.\" 2. Redistributions in binary form must reproduce the above copyright
.\"    notice, this list of conditions and the following disclaimer in the
.\"    documentation and/or other materials provided with the distribution.
.\" 3. All advertising materials mentioning features or use of this software
.\"    must display the following acknowledgement:
.\"	This product includes software developed by the University of
.\"	California, Berkeley and its contributors.
.\" 4. Neither the name of the University nor the names of its contributors
.\"    may be used to endorse or promote products derived from this software
.\"    without specific prior written permission.
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
.\" SUCH DAMAGE.
.\"
.\"     $Id: socket.2,v 1.7 2001/03/02 06:35:42 nakano Exp $
.\"
.\" Modified 1993-07-24 by Rik Faith <faith@cs.unc.edu>
.\" Modified 1996-10-22 by Eric S. Raymond <esr@thyrsus.com>
.\" Modified 1998, 1999 by Andi Kleen <ak@muc.de>
.\" Modified 2002-07-17 by Michael Kerrisk <mtk.manpages@gmail.com>
.\" Modified 2004-06-17 by Michael Kerrisk <mtk.manpages@gmail.com>
.\"
.\" Japanese Version Copyright (c) 1997 HANATAKA Shinya
.\"         all rights reserved.
.\" Translated Mon Mar  3 23:40:11 JST 1997
.\"         by HANATAKA Shinya <hanataka@abyss.rim.or.jp>
.\" Modified Sun Aug 15 23:52:28 JST 1999
.\"         by HANATAKA Shinya <hanataka@abyss.rim.or.jp>
.\" Updated Mon Jan 13 JST 2000 by Kentaro Shirakata <argrath@ub32.org>
.\" Updated Mon Oct 15 JST 2001 by Kentaro Shirakata <argrath@ub32.org>
.\" Updated Mon Oct 26 JST 2002 by Kentaro Shirakata <argrath@ub32.org>
.\"
.\"WORD:	endpoint		ü
.\"WORD:	descriptor		ǥץ
.\"WORD:	link layer		
.\"WORD:	byte stream		Хȡȥ꡼
.\"WORD:	out-of-band		Ӱ賰
.\"WORD:	sequenced		Τ
.\"WORD:	reliable		Τ
.\"WORD:	two-way			
.\"WORD:	datagram		ǡ
.\"WORD:	implement		
.\"WORD:	super-user		ѡ桼
.\"WORD:	full-duplex		
.\"WORD:	non-blocking I/O	 I/O
.\"WORD:	asynchronous		Ʊ
.\"
.TH SOCKET 2 2004-06-17 "Linux" "Linux Programmer's Manual"
.SH ̾
socket \- ̿Τü(endpoint)
.SH 
.BR "#include <sys/types.h>" "          /* ա׻ */"
.br
.B #include <sys/socket.h>
.sp
.BI "int socket(int " domain ", int " type ", int " protocol );
.SH 
.BR socket ()
̿Τü(endpoint)ǥץ(descriptor)֤
.PP
.I domain
ѥ᡼̿Ԥʤɥᥤꤹ; Ϥɤ
ץȥ롦եߥ(protocol family)̿˻Ѥ뤫ꤹ롣
Υեߥ
.I <sys/socket.h>
Ƥ롣
ߡǤեޥåȤϰʲ̤ꡣ
.TS
tab(:);
l l l.
̾:Ū:ޥ˥奢
T{
.BR PF_UNIX ", " PF_LOCAL
T}:T{
̿
T}:T{
.BR unix (7)
T}
T{
.B PF_INET
T}:IPv4 󥿡ͥåȡץȥ:T{
.BR ip (7)
T}
T{
.B PF_INET6
T}:IPv6 󥿡ͥåȡץȥ:T{
.BR ipv6 (7)
T}
T{
.B PF_IPX
T}:IPX \- Novell ץȥ:
T{
.B PF_NETLINK
T}:T{
ͥ롦桼ǥХ
T}:T{
.BR netlink (7)
T}
T{
.B PF_X25
T}:ITU-T X.25 / ISO-8208 ץȥ:T{
.BR x25 (7)
T}
T{
.B PF_AX25
T}:T{
ޥ奢̵ AX.25 ץȥ
T}:
T{
.B PF_ATMPVC
T}: ATM PVC ˥:
T{
.B PF_APPLETALK
T}:åץȡ:T{
.BR ddp (7)
T}
T{
.B PF_PACKET
T}:T{
٥Υѥåȥ󥿡ե
T}:T{
.BR packet (7)
T}
.TE
.PP
åȤ
.I type
ǻꤵ뷿̿(semantics)ꤹ롣
Ƥ뷿ϸ߰ʲ̤ꡣ
.TP
.B SOCK_STREAM
ȿꡢΡ³줿
Хȡȥ꡼(byte stream)󶡤롣
Ӱ賰(out-of-band)ǡžᥫ˥⥵ݡȤ롣
.TP
.B SOCK_DGRAM
ǡ(³̵Ĺå)
򥵥ݡȤ롣
.TP
.B SOCK_SEQPACKET
ĹΥǡžѥ˴ŤΤ
³˴Ť̿󶡤롣¦ǤϤ줾
ƥࡦǥѥåΤɤ߼뤳Ȥ׵ᤵ롣
.TP
.B SOCK_RAW
ΥͥåȥץȥؤΥ󶡤롣
.TP
.B SOCK_RDM
Ϥ뤬ݾڤʤǡؤ󶡤롣
.TP
.B SOCK_PACKET
ѻߤƤ꿷ץǻѤƤϤʤ
.R packet (7)
򻲾Ȥ뤳
.PP
ΥåȷƤΥץȥ롦եߥǼƤ櫓ǤϤʤ
㤨
.B SOCK_SEQPACKET

.B AF_INET
ˤϼƤʤ
.PP
.I protocol
ϥåȤˤäƻѤͭΥץȥꤹ롣̾綠줾
åȤϡͿ줿ץȥ롦եߥμऴȤ˰ĤΥץȥΤߤ
ݡȤ롣
ξ
.I protocol
 0 Ǥ롣
¿Υץȥ뤬¸ߤƤ⤫ޤʤ
ξˤϤˡˤͭΥץȥꤹɬפ롣
Ѥץȥֹ̿ιԤʤ\*(lq̿ɥᥤ\*(rq
ͭǤ;
.BR protocols (5)
򻲾Ȥ뤳ȡ
ץȥ̾ɤäƥץȥֹб뤫ˤĤƤ
.BR getprotoent (3)
򻲾Ȥ뤳ȡ
.PP
.B SOCK_STREAM
ΥåȤϥѥפΤ褦ťХȡȥ꡼Ǥ롣
ϥ쥳ɶ¸ʤ
ȥ꡼ϡåȤǡäꤹ
.I ³줿
֤ˤʤäƤʤФʤʤ¾ΥåȤؤ³
.BR connect (2)
ˤäƹԤʤ롣³ǡ
.BR read (2)

.BR write (2)

.BR send (2)

.BR recv (2)
ѼѤžǤ롣
å󤬴λ
.BR close (2)
Ԥʤ롣Ӱ賰ǡž
.BR send (2)
˵ҤƤꡢ

.BR recv (2)
˵ҤƤ롣
.PP
.B SOCK_STREAM
̿ץȥϥǡ»ʣʤȤݾڤ롣
⤷Υץȥ뤬Хåե֤
ǡҤŬʻ֤ΤžǤʤС
³Ǥ줿ȤߤʤΥå
.B SO_KEEPALIVE
ͭˤʤäƤ硢ץȥȼˡ³¦ޤ
ͭǤ뤫å롣
⤷ץ줿ȥ꡼ǥǡ褦Ȥˤ
.B SIGPIPE
ʥ뤬; ̾ΤΥʥ򰷤äƤʤץ
λ롣
.B SOCK_SEQPACKET
åȤ
.B SOCK_STREAM
åȤƱƥࡦѤ롣
ͣΰ㤤
.BR read (2)
뤬׵ᤵ줿̤ΥǡΤߤ֤夷ѥåȤλĤʬ
ΤƤƤޤȤǤ롣ƱͤäƤǡƤΥå
¸롣
.PP
.B SOCK_DGRAM

.B SOCK_RAW
åȤ
.BR sendto (2)
ǻꤵ줿إǡ뤳ȤƤ롣
ǡϰ̤
.BR recvfrom (2)
ǼȤꡢ
ΥϼΥǡԤΥɥ쥹Ȱ֤
.PP
.B SOCK_PACKET
ϸŤåȷǡ(raw)ΥѥåȤǥХɥ饤Ф
ľܼ뤿ΤΤǤ롣

.BR packet (7)
Ѥ뤳ȡ
.PP
.BR fcntl (2)

.B F_SETOWN
Ȥäơʥ
.B SIGURG

.B SIGPIPE
Ȥץ롼פǤ롣
.B SIGURG
ʥӰ賰ǡ夷ˡ
.B SIGPIPE
ʥ
.B SOCK_STREAM
³ͽǤ줿롣
ޤ
.B F_SETOWN
ϡI/O  I/O ٥ȤƱ (asynchronous) Τ
.B SIGIO
ͳǼץץ롼פꤹΤˤѤǤ롣
.B F_SETOWN
Ѥ뤳Ȥ
.B FIOSETOWN
ޤ
.B SIOCSPGRP
ΰ
.BR ioctl (2)
Ѥ뤳ȤǤ롣
.PP
ͥåȥץȥ롦⥸塼˥顼֤
(㤨СIP  ICMP åѤ)ˤϡåȤ
ڥǥ󥰡顼ե饰ꤵ롣ˤΥåȤ
˥ڥǥ󥰤Ƥ顼ɤ֤롣ץȥˤäƤ
顼ˤĤƤΤܤ뤿˥åȤȤΥ顼塼
뤳ȤǽǤ롣
.BR ip (7)

.B IP_RECVERR
򻲾Ȥ뤳ȡ
.PP
åȤϥåȡ٥
.I options
ˤä椵롣
Υץ
.I <sys/socket.h>
Ƥ롣
.BR setsockopt (2)

.BR getsockopt (2)
ؿϤ줾쥪ץȼԤʤ
.SH ֤
硢åȤΥե롦ǥץ֤
顼ȯ \-1 ֤
.I errno
Ŭڤꤹ롣
.SH 顼
.TP
.B EACCES
ꤵ줿פޤϥץȥΥåȤĤͿƤʤ
.TP
.B EAFNOSUPPORT
ꤵ줿ɥ쥹եߥ꡼ݡȤƤʤ
.TP
.B EINVAL
Τʤץȥ롢ޤѤǤʤץȥ롦եߥǤ롣
.TP
.B EMFILE
ץΥեơ֥뤬Ƥ롣
.TP
.B ENFILE
ͥ˿åȹ¤Τ˳Ƥ뤿νʬʥ꤬ʤ
.TP
.BR ENOBUFS " ޤ " ENOMEM
ʬʥ꤬ʤʬʻ񸻤ޤǤϥåȤ
뤳ȤϤǤʤ
.TP
.B EPROTONOSUPPORT
ΥɥᥤǤϻꤵ줿ץȥޤϥץȥ롦פ
ݡȤƤʤ
.PP
̤Υץȥ롦⥸塼뤫¾Υ顼뤫⤷ʤ
.SH 
4.4BSD, POSIX.1-2001.
.BR socket ()
 4.2BSD о줷̤ˡ(System V Ѽޤ)
BSD Υåؤθߴ򥵥ݡȤƤ BSD ʳΥƥؤΡ
ޤϡBSD ʳΥƥफΰܿǤ롣
.SH 
POSIX.1-2001 Ǥ
.I <sys/types.h>
Υ󥯥롼ɤɬܤȤƤ餺
Linux ǤϤΥإåեɬפǤϤʤ
ŪˤϡĤμ (BSD ) ǤΥإåե뤬
ɬפǤꡢܿɬפʥץꥱǤϤΥե
󥯥롼ɤΤǤ

4.x BSD ˤѤ硢ץȥ롦եߥ꡼ˤ
.BR PF_UNIX ,
.B PF_INET
ѤƤ롣ǥɥ쥹եߥ꡼ˤ
.B AF_UNIX
ѤƤ롣ʤ BSD Υޥ˥奢Ǥ
ְ̤˥ץȥ롦եߥ꡼ϥɥ쥹եߥ꡼ƱΤǤ롣
ݾڤƤ롣ǤʳεʤǤƤξ AF_* ѤƤ롣
.SH Х
.B SOCK_UUCP
ϤޤƤʤ
.SH 
.BR socket ()
㤬
.BR getaddrinfo (3)
˵ܤƤ롣
.SH Ϣ
.BR accept (2),
.BR bind (2),
.BR connect (2),
.BR fcntl (2),
.BR getpeername (2),
.BR getsockname (2),
.BR getsockopt (2),
.BR ioctl (2),
.BR listen (2),
.BR read (2),
.BR recv (2),
.BR select (2),
.BR send (2),
.BR shutdown (2),
.BR socketpair (2),
.BR getprotoent (3),
.BR ip (7),
.BR socket (7),
.BR tcp (7),
.BR udp (7),
.BR unix (7)
.PP
\(lqAn Introductory 4.3BSD Interprocess Communication Tutorial\(rq

.I UNIX Programmer's Supplementary Documents Volume 1
ȤƺǤ줿
.PP
\(lqBSD Interprocess Communication Tutorial\(rq

.I UNIX Programmer's Supplementary Documents Volume 1
ȤƺǤ줿