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= nng_msg_dup(3)
:doctype: manpage
:manmanual: nng
:mansource: nng
:manvolnum: 3
:copyright: Copyright 2018 mailto:info@staysail.tech[Staysail Systems, Inc.] + \
Copyright 2018 mailto:info@capitar.com[Capitar IT Group BV] + \
{blank} + \
This document is supplied under the terms of the \
https://opensource.org/licenses/MIT[MIT License].
== NAME
nng_msg_dup - duplicate a message
== SYNOPSIS
[source, c]
-----------
#include <nng/nng.h>
int nng_msg_dup(nng_msg **dup, nng_msg_t *orig);
-----------
== DESCRIPTION
The `nng_msg_dup()` makes a duplicate of the original message _orig_, and
saves the result in the location pointed by _dup_. The actual message
body and header content is copied, but the duplicate may contain a
different amount of unused space than the original message.
== RETURN VALUES
This function returns 0 on success, and non-zero otherwise.
== ERRORS
`NNG_ENOMEM`:: Insufficient free memory exists to duplicate a message.
== SEE ALSO
<<nng_msg_alloc#,nng_msg_alloc(3)>>,
<<nng_msg_free#,nng_msg_free(3)>>,
<<nng_strerror#,nng_strerror(3)>>,
<<nng#,nng(7)>>
== COPYRIGHT
{copyright}
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