socketpair(2POSIX)

NAME | SYNOPSIS | FEATURES | DESCRIPTION | DIAGNOSTICS | ERRORS | ATTRIBUTES | SEE ALSO | BUGS | HISTORY

NAME

socketpair- create a pair of connected sockets

SYNOPSIS

#include <sys/types.h>
#include <sys/socket.h>

int socketpair(int d, int type, int protocol, int *sv);

FEATURES

POSIX_SOCKETS

DESCRIPTION

The socketpair call creates an unnamed pair of connected sockets in the domain specified by d, of the type specified, 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

If successful, socketpair returns a value of 0; otherwise it returns a value of -1, and sets errno to indicate one of the following error conditions.

ERRORS

[EMFILE]

Too many descriptors are in use by this process.

[ENFILE]

The system file table is full.

[ENOBUFS]

Insufficient buffer space is available. The operation cannot be completed until sufficient resources are freed.

[EAFNOSUPPORT]

The address family specified is not supported on this machine.

[EPROTONOSUPPORT]

The protocol specified is not supported on this machine.

[EOPNOSUPPORT]

The protocol specified does not support creation of socket pairs.

[EFAULT]

The address sv does not specify a valid part of the process address space.

ATTRIBUTES

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE	ATTRIBUTE VALUE
Interface Stability	Evolving

SEE ALSO

read(2POSIX), write(2POSIX), pipe(2POSIX)

BUGS

This call is only currently implemented for the UNIX domain.

HISTORY

This function call appeared in 4.2 BSD.

ChorusOS 4.0  Last Revised December 1999

NAME | SYNOPSIS | FEATURES | DESCRIPTION | DIAGNOSTICS | ERRORS | ATTRIBUTES | SEE ALSO | BUGS | HISTORY