| connect.2 (108028) | connect.2 (108087) |
|---|---|
| 1.\" Copyright (c) 1983, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 16 unchanged lines hidden (view full) --- 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)connect.2 8.1 (Berkeley) 6/4/93 | 1.\" Copyright (c) 1983, 1993 2.\" The Regents of the University of California. All rights reserved. 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. --- 16 unchanged lines hidden (view full) --- 25.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30.\" SUCH DAMAGE. 31.\" 32.\" @(#)connect.2 8.1 (Berkeley) 6/4/93 |
| 33.\" $FreeBSD: head/lib/libc/sys/connect.2 108028 2002-12-18 09:22:32Z ru $ | 33.\" $FreeBSD: head/lib/libc/sys/connect.2 108087 2002-12-19 09:40:28Z ru $ |
| 34.\" 35.Dd June 4, 1993 36.Dt CONNECT 2 37.Os 38.Sh NAME 39.Nm connect 40.Nd initiate a connection on a socket 41.Sh LIBRARY 42.Lb libc 43.Sh SYNOPSIS 44.In sys/types.h 45.In sys/socket.h 46.Ft int 47.Fn connect "int s" "const struct sockaddr *name" "socklen_t namelen" 48.Sh DESCRIPTION | 34.\" 35.Dd June 4, 1993 36.Dt CONNECT 2 37.Os 38.Sh NAME 39.Nm connect 40.Nd initiate a connection on a socket 41.Sh LIBRARY 42.Lb libc 43.Sh SYNOPSIS 44.In sys/types.h 45.In sys/socket.h 46.Ft int 47.Fn connect "int s" "const struct sockaddr *name" "socklen_t namelen" 48.Sh DESCRIPTION |
| 49The parameter | 49The |
| 50.Fa s | 50.Fa s |
| 51argument |
|
| 51is a socket. 52If it is of type 53.Dv SOCK_DGRAM , 54this call specifies the peer with which the socket is to be associated; 55this address is that to which datagrams are to be sent, 56and the only address from which datagrams are to be received. 57If the socket is of type 58.Dv SOCK_STREAM , 59this call attempts to make a connection to 60another socket. 61The other socket is specified by 62.Fa name , 63which is an address in the communications space of the socket. 64Each communications space interprets the 65.Fa name | 52is a socket. 53If it is of type 54.Dv SOCK_DGRAM , 55this call specifies the peer with which the socket is to be associated; 56this address is that to which datagrams are to be sent, 57and the only address from which datagrams are to be received. 58If the socket is of type 59.Dv SOCK_STREAM , 60this call attempts to make a connection to 61another socket. 62The other socket is specified by 63.Fa name , 64which is an address in the communications space of the socket. 65Each communications space interprets the 66.Fa name |
| 66parameter in its own way. | 67argument in its own way. |
| 67Generally, stream sockets may successfully 68.Fn connect 69only once; datagram sockets may use 70.Fn connect 71multiple times to change their association. 72Datagram sockets may dissolve the association 73by connecting to an invalid address, such as a null address. 74.Sh RETURN VALUES 75.Rv -std connect 76.Sh ERRORS 77The 78.Fn connect 79system call fails if: 80.Bl -tag -width Er 81.It Bq Er EBADF | 68Generally, stream sockets may successfully 69.Fn connect 70only once; datagram sockets may use 71.Fn connect 72multiple times to change their association. 73Datagram sockets may dissolve the association 74by connecting to an invalid address, such as a null address. 75.Sh RETURN VALUES 76.Rv -std connect 77.Sh ERRORS 78The 79.Fn connect 80system call fails if: 81.Bl -tag -width Er 82.It Bq Er EBADF |
| 83The |
|
| 82.Fa s | 84.Fa s |
| 85argument |
|
| 83is not a valid descriptor. 84.It Bq Er ENOTSOCK | 86is not a valid descriptor. 87.It Bq Er ENOTSOCK |
| 88The |
|
| 85.Fa s | 89.Fa s |
| 90argument |
|
| 86is a descriptor for a file, not a socket. 87.It Bq Er EADDRNOTAVAIL 88The specified address is not available on this machine. 89.It Bq Er EAFNOSUPPORT 90Addresses in the specified address family cannot be used with this socket. 91.It Bq Er EISCONN 92The socket is already connected. 93.It Bq Er ETIMEDOUT 94Connection establishment timed out without establishing a connection. 95.It Bq Er ECONNREFUSED 96The attempt to connect was forcefully rejected. 97.It Bq Er ENETUNREACH 98The network isn't reachable from this host. 99.It Bq Er EADDRINUSE 100The address is already in use. 101.It Bq Er EFAULT 102The 103.Fa name | 91is a descriptor for a file, not a socket. 92.It Bq Er EADDRNOTAVAIL 93The specified address is not available on this machine. 94.It Bq Er EAFNOSUPPORT 95Addresses in the specified address family cannot be used with this socket. 96.It Bq Er EISCONN 97The socket is already connected. 98.It Bq Er ETIMEDOUT 99Connection establishment timed out without establishing a connection. 100.It Bq Er ECONNREFUSED 101The attempt to connect was forcefully rejected. 102.It Bq Er ENETUNREACH 103The network isn't reachable from this host. 104.It Bq Er EADDRINUSE 105The address is already in use. 106.It Bq Er EFAULT 107The 108.Fa name |
| 104parameter specifies an area outside | 109argument specifies an area outside |
| 105the process address space. 106.It Bq Er EINPROGRESS 107The socket is non-blocking 108and the connection cannot 109be completed immediately. 110It is possible to 111.Xr select 2 112for completion by selecting the socket for writing. --- 34 unchanged lines hidden --- | 110the process address space. 111.It Bq Er EINPROGRESS 112The socket is non-blocking 113and the connection cannot 114be completed immediately. 115It is possible to 116.Xr select 2 117for completion by selecting the socket for writing. --- 34 unchanged lines hidden --- |