Originální popis anglicky:
socketpair - create a pair of connected sockets
Návod, kniha: Linux Programmer's Manual
#include <sys/types.h>
#include <sys/socket.h>
int socketpair(int d, int type, int
protocol, int sv[2]);
The
socketpair call creates an unnamed pair of connected sockets in the
specified domain
d, of the specified
type, and using the
optionally specified
protocol. The descriptors used in referencing the
new sockets are returned in
sv[0] and
sv[1]. The two sockets are
indistinguishable.
On success, zero is returned. On error, -1 is returned, and
errno is set
appropriately.
- EAFNOSUPPORT
- The specified address family is not supported on this
machine.
- EFAULT
- The address sv does not specify a valid part of the
process address space.
- EMFILE
- Too many descriptors are in use by this process.
- ENFILE
- The system limit on the total number of open files has been
reached.
- EOPNOTSUPP
- The specified protocol does not support creation of socket
pairs.
- EPROTONOSUPPORT
- The specified protocol is not supported on this
machine.
4.4BSD, SUSv2, POSIX 1003.1-2001. The
socketpair function call appeared
in 4.2BSD. It is generally portable to/from non-BSD systems supporting clones
of the BSD socket layer (including System V variants).
On Linux, the only supported domain for this call is
AF_UNIX (or
synonymously,
AF_LOCAL). (Most implementations have the same
restriction.)
pipe(2),
read(2),
socket(2),
write(2),
unix(7)
