socketpair(3SOCKET) Sockets Library Functions socketpair(3SOCKET)NAMEsocketpair - create a pair of connected sockets
SYNOPSIS
cc [ flag ... ] file ... -lsocket -lnsl [ library ... ]
#include <sys/types.h>
#include <sys/socket.h>
int socketpair(int domain, int type, int protocol, int sv[2]);
DESCRIPTION
The socketpair() library call creates an unnamed pair of connected
sockets in the specified address family domain, of the specified type,
that uses the optionally specified protocol. The descriptors that are
used in referencing the new sockets are returned in sv[0] and sv[1].
The two sockets are indistinguishable.
RETURN VALUESsocketpair() returns −1 on failure and 0 on success.
ERRORS
The call succeeds unless:
EAFNOSUPPORT The specified address family is not
supported on this machine.
EMFILE Too many descriptors are in use by this
process.
ENOMEM There was insufficient user memory for
the operation to complete.
ENOSR There were insufficient STREAMS
resources for the operation to com‐
plete.
EOPNOTSUPP The specified protocol does not support
creation of socket pairs.
EPROTONOSUPPORT The specified protocol is not supported
on this machine.
EACCES The process does not have appropriate
privileges.
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│MT-Level │Safe │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOpipe(2), read(2), write(2), socket.h(3HEAD), attributes(5)NOTES
This call is currently implemented only for the AF_UNIX address family.
SunOS 5.10 10 Jan 2001 socketpair(3SOCKET)