doompanning/docs/man/nng_pair_open.3.adoc
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= nng_pair_open(3)
//
// Copyright 2018 Staysail Systems, Inc. <info@staysail.tech>
// Copyright 2018 Capitar IT Group BV <info@capitar.com>
//
// 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_pair_open - create pair socket
== SYNOPSIS
.Version 0
[source,c]
----
#include <nng/protocol/pair0/pair.h>
int nng_pair0_open(nng_socket *s);
int nng_pair0_open_raw(nng_socket *s);
----
.Version 1
[source,c]
----
#include <nng/protocol/pair1/pair.h>
int nng_pair1_open(nng_socket *s);
int nng_pair1_open_raw(nng_socket *s);
int nng_pair1_open_poly(nng_socktet *s);
----
== DESCRIPTION
The `nng_pair0_open()` and `nng_pair1_open()` functions
create a xref:nng_pair.7.adoc[_pair_] version 0 or version 1
xref:nng_socket.5.adoc[socket] and return it at the location pointed to by _s_.
The `nng_pair0_open_raw()` and `nng_pair1_open_raw()` functions
create a xref:nng_pair.7.adoc[_pair_] version 0 or version 1
xref:nng_socket.5.adoc[socket] in
xref:nng.7.adoc#raw_mode[raw] mode and return it at the location pointed to by _s_.
The `nng_pair1_open_poly()` function opens a pair version 1 socket in
polyamorous mode.
NOTE: Polyamorous mode is deprecated and should not be used in new applications.
The `nng_pair1_open_poly()` function will likely be removed in a future release.
== RETURN VALUES
These functions returns 0 on success, and non-zero otherwise.
== ERRORS
[horizontal]
`NNG_ENOMEM`:: Insufficient memory is available.
`NNG_ENOTSUP`:: The protocol is not supported.
== SEE ALSO
[.text-left]
xref:nng_socket.5.adoc[nng_socket(5)],
xref:nng_pair.7.adoc[nng_pair(7)],
xref:nng.7.adoc[nng(7)]