= nng_msg_dup(3)
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//
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// Copyright 2018 Staysail Systems, Inc. <info@staysail.tech>
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// Copyright 2018 Capitar IT Group BV <info@capitar.com>
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//
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// This document is supplied under the terms of the MIT License, a
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// copy of which should be located in the distribution where this
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// file was obtained (LICENSE.txt). A copy of the license may also be
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// found online at https://opensource.org/licenses/MIT.
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//
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== NAME
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nng_msg_dup - duplicate a message
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== SYNOPSIS
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[source, c]
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----
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#include <nng/nng.h>
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int nng_msg_dup(nng_msg **dup, nng_msg_t *orig);
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----
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== DESCRIPTION
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The `nng_msg_dup()` makes a duplicate of the original message _orig_, and
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saves the result in the location pointed by _dup_.
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The actual message body and header content is copied,
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but the duplicate may contain a
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different amount of unused space than the original message.
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== RETURN VALUES
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This function returns 0 on success, and non-zero otherwise.
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== ERRORS
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[horizontal]
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`NNG_ENOMEM`:: Insufficient free memory exists to duplicate a message.
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== SEE ALSO
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[.text-left]
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xref:nng_msg_alloc.3.adoc[nng_msg_alloc(3)],
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xref:nng_msg_free.3.adoc[nng_msg_free(3)],
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xref:nng_strerror.3.adoc[nng_strerror(3)],
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xref:nng_msg.5.adoc[nng_msg(5)],
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xref:nng.7.adoc[nng(7)]
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