.\" Hey Emacs! This file is -*- nroff -*- source.
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.\" Copyright 1993 Rickard E. Faith (faith@cs.unc.edu)
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.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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.\" Modified Fri Jan 31 16:22:26 1997 by Eric S. Raymond <esr@thyrsus.com>
.\" Modified 1998,1999 by Andi Kleen
.\" $Id: connect.2,v 1.4 2000/01/03 21:20:38 argrath Exp $
.\"
.\" Japanese Version Copyright (c) 1996 Yosiaki Yanagihara
.\"         all rights reserved.
.\" Translated Tue Jun 25 13:37:31 JST 1996
.\"         by Yosiaki Yanagihara <yosiaki@bsd2.kbnes.nec.co.jp>
.\" Modified Thu Nov  6 23:16:02 JST 1997
.\"         by HANATAKA Shinya <hanataka@abyss.rim.or.jp>
.\" Modified Sat Aug 14 09:02:25 JST 1999
.\"         by HANATAKA Shinya <hanataka@abyss.rim.or.jp>
.\" Modified Mon Jan 13 01:05:24 JST 2000
.\"         by Kentaro Shirakata <argrath@yo.rim.or.jp>
.\"
.TH CONNECT 2 "3 Oct 1998" "Linux 2.2" "Linux Programmer's Manual"
.SH ̾
connect \- åȤ³Ԥʤ
.SH 
.B #include <sys/types.h>
.br
.B #include <sys/socket.h>
.sp
.BI "int connect(int " sockfd ", const struct sockaddr *" serv_addr ,
.BI "socklen_t " addrlen );
.SH 
ե롦ǥץ
.I sockfd
ϥåȤ򻲾ȤƤɬפ롣
åȤ
.B SOCK_DGRAM
ξ硢ɥ쥹
.I serv_addr
ǡǥեȤΰꤷΥɥ쥹
ǡΤߤ롣åȤ
.B SOCK_STREAM
ޤ
.B SOCK_SEQPACKET
ξ硢Υƥॳ̤ΥåȤȤ³Ω褦
ߤ롣
ΥåȤ
.I serv_addr
ǻꤹ롣
.BR serv_addr
ϥåȤ̿ɥᥤΥɥ쥹Ǥ롣Υɥ쥹Ĺ
.I addrlen
ǻꤹ롣ġ̿ɥᥤȼˡǥѥ᡼
.I serv_addr
᤹롣
.PP
Ūˡ³ظ(connection-oriented)ץȥǤϰ٤
.B connect
롣
³(connectionless)ץȥǤбѹ뤿˲٤
.B connect
ѤǤ롣
³åȤ
.B sockaddr

.I sa_family
Ф
.B AF_UNSPEC
ꤹ뤳Ȥˤäơ³ɥ쥹бä뤳ȤǤ롣
.SH ֤
³ޤбŤȥ֤
Ԥ \-1 ֤
.I errno
Ŭڤͤꤹ롣
.SH 顼
ʲϰŪʥåȤˤĤƤΥ顼Ǥ롣¾˥ɥᥤͭΥ顼
ȯǽ롣
.TP
.B EBADF
.\O" The file descriptor is not a valid index in the descriptor table.
եǥץǥץơ֥
ǥåǤϤʤ
.TP
.B EFAULT
åȹ¤ΤΥɥ쥹桼Υɥ쥹֤γˤ롣
.TP
.B ENOTSOCK
եǥץåȤȴϢդƤʤ
.TP
.B EISCONN
åȤϴ³(connect)Ƥ롣
.TP
.B ECONNREFUSED
⡼ȥɥ쥹³ԤäƤץबʤ
.TP
.B ETIMEDOUT
³ߤƤǻڤ(timeout)ˤʤäСƤ
³ʤΤ⤷ʤ
syncookie СͭˤʤäƤϡ
IPåȤΥॢȤĹ⤷ʤȤա
.TP
.B ENETUNREACH
ͥåȥãǤʤ
.TP
.B EADDRINUSE
륢ɥ쥹˻ѤƤ롣
.TP
.B EINPROGRESS
åȤ(non-blocking)ꤵƤơ³˴λʤ
åȤؤν񤭹ߤԤĤȤˤꡢ³δλ
.BR select (2)

.BR poll (2)
Ѥ뤳ȤǤ롣\fBselect\fR ǽ񤭹߲ǽˤʤä
.BR getsockopt (2)
 
.B SOL_SOCKET
٥ 
.B SO_ERROR
ץɤ߽Ф
Ȥˤꡢ
.B connect 

.RB ( SO_ERROR
)
Ԥ
.RB ( SO_ERROR
ǤΥ顼ɤΤɤ줫ǼԤθ򼨤)
Ǥ롣
.TP
.B EALREADY
åȤ(non-blocking)ꤵƤꡢ³λƤʤ
.TP
.B EAGAIN
ѲǽʥΥݡȤʤ
롼ƥ󥰥å˽ʬʥȥ꤬ʤ
.B PF_INET
ξˡɤäƥݡȤ䤹˴ؤƤ
.BR ip (7) 

.B net.ipv4.ip_local_port_range
sysctl 򻲾Ȥ뤳ȡ
.TP
.B EAFNOSUPPORT
Ϥ줿ɥ쥹
.I sa_family
եɤɥ쥹եߥ꡼ǤϤʤ
.TP
.B EACCES, EPERM
åȤΥ֥ɥ㥹ȡե饰ͭˤʤäƤʤΤ
桼֥ɥ㥹Ȥ³ߤޤϡΥե
§ˤ³׵᤬Ԥ
.SH 
SVr4, 4.4BSD (
.B connect
ؿ BSD 4.2 Ǻǽ˸줿)
SVr4 ˤ¾˰Ūʥ顼ɤȤơ
.BR EADDRNOTAVAIL , 
.BR EINVAL ,
.BR EAFNOSUPPORT ,
.BR EALREADY ,
.BR EINTR ,
.BR EPROTOTYPE , 
.B ENOSR
ˤĤƤεҤ롣ޤǸڤƤʤ¿Υ顼֤ˤĤ
Ҥ롣
.SH 
.B connect
λܤΰ BSD 4.*  libc4, libc5 Ʊͤ˼ºݤˤ int Ǥ롣
 socklen_t ˴ؤ POSIX ˤϾ𤬤롣ʤƤϤޤ
Ƥʤglibc2 ǤϤ˽ä socklen_t ѤƤ롣
ܤ
.BR accept (2)
򻲾ȤΤȡ
.SH Х
.B AF_UNSPEC
ɥ쥹ꤷ
.B connect
Ƥ֤Ȥˤ꥽åȤ³ä뵡ǽϤޤƤʤ
.SH Ϣ
.BR accept (2),
.BR bind (2),
.BR listen (2),
.BR socket (2),
.BR getsockname (2)