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+= nng_socket_pair(3)
+//
+// Copyright 2023 Staysail Systems, Inc. <info@staysail.tech>
+//
+// This document is supplied under the terms of the MIT License, a
+// copy of which should be located in the distribution where this
+// file was obtained (LICENSE.txt).  A copy of the license may also be
+// found online at https://opensource.org/licenses/MIT.
+//
+
+== NAME
+
+nng_socket_pair - create a connected pair of BSD sockets
+
+== SYNOPSIS
+
+[source, c]
+----
+#include <nng/nng.h>
+#include <nng/supplemental/util/platform.h>
+
+int nng_socket_pair(int fds[2]);
+----
+
+== DESCRIPTION
+
+The `nng_socket_pair()` function creates a pair of connected BSD sockets.
+These sockets, which are returned in the _fds_ array, are suitable for
+use with the xref:nng_socket.7.adoc[_socket_] transport.
+
+On POSIX platforms, this is a thin wrapper around the standard `socketpair()` function,
+using the `AF_UNIX` family and the `SOCK_STREAM` socket type.
+
+NOTE: At present only POSIX platforms implementing `socketpair()` are supported with this function.
+
+TIP: This function may be useful for creating a shared connection between a parent process and
+a child process on UNIX platforms, without requiring the processes use a shared filesystem or TCP connection.
+
+== RETURN VALUES
+
+This function returns 0 on success, and non-zero otherwise.
+
+== ERRORS
+
+[horizontal]
+`NNG_ENOMEM`:: Insufficient memory exists.
+`NNG_ENOTSUP`:: This platform does not support socket pairs.
+
+== SEE ALSO
+
+[.text-left]
+xref:nng_socket.7.adoc[nng_socket(7)],
+xref:nng.7.adoc[nng(7)]