socketpair(2)socketpair(2)Namesocketpair - create a pair of connected sockets
Syntax
#include <sys/types.h>
#include <sys/socket.h>
socketpair(d, type, protocol, sv)
int d, type, protocol;
int sv[2];
Description
The 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.
Return Values
A zero (0) is returned if the call succeeds, -1 if it fails.
Diagnostics
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 Alsopipe(2), read(2), write(2)socketpair(2)