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socketpair(2) [ultrix man page]

socketpair(2)							System Calls Manual						     socketpair(2)

Name
       socketpair - 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 Also
       pipe(2), read(2), write(2)

																     socketpair(2)

Check Out this Related Man Page

socketpair(3SOCKET)					     Sockets Library Functions					       socketpair(3SOCKET)

NAME
socketpair - 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 VALUES
socketpair() 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 complete. 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 ALSO
pipe(2), read(2), write(2), socket.h(3HEAD), attributes(5) NOTES
This call is currently implemented only for the AF_UNIX address family. SunOS 5.11 10 Jan 2001 socketpair(3SOCKET)
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