SOCKETPAIR(2)SOCKETPAIR(2)NAMEsocketpair - create a pair of connected sockets
SYNOPSIS
#include <sys/types.h>
#include <sys/socket.h>
socketpair(d, type, protocol, sv)
int d, type, protocol;
int sv[2];
DESCRIPTION
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.
DIAGNOSTICS
A 0 is returned if the call succeeds, -1 if it fails.
ERRORS
The call succeeds unless:
[EMFILE] Too many descriptors are in use by this process.
[EAFNOSUPPORT] The specified address family is not supported on
this machine.
[EPROTONOSUPPORT] The specified protocol is not supported on this
machine.
[EOPNOSUPPORT] The specified protocol does not support creation of
socket pairs.
[EFAULT] The address sv does not specify a valid part of the
process address space.
SEE ALSOread(2), write(2), pipe(2)BUGS
This call is currently implemented only for the UNIX domain.
4.2 Berkeley Distribution May 15, 1985 SOCKETPAIR(2)