socketpair - create a pair of connected sockets
int socketpair(int d, int type, int protocol, int sv);
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 and sv. The two sockets are indistinguishable.
On success, zero is returned. On error, -1 is returned, and errno is
EMFILE Too many descriptors are in use by this process.
EAFNOSUPPORT [Toc] [Back]
The specified address family is not supported on this machine.
EPROTONOSUPPORT [Toc] [Back]
The specified protocol is not supported on this machine.
EOPNOSUPPORT [Toc] [Back]
The specified protocol does not support creation of socket
EFAULT The address sv does not specify a valid part of the process
4.4BSD (the socketpair function call appeared in 4.2BSD). Generally
portable to/from non-BSD systems supporting clones of the BSD socket
layer (including System V variants).
read(2), write(2), pipe(2)
BSD Man Page 1993-07-24 SOCKETPAIR(2)
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