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= nng_aio_finish(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_aio_finish - finish asynchronous I/O operation
== SYNOPSIS
[source, c]
-----------
#include <nng/nng.h>
void nng_aio_finish(nng_aio *aio, int err);
-----------
== DESCRIPTION
The `nng_aio_finish()` function marks operation associated with _aio_ as
complete, with the status _err_. This will be the result returned by
<<nng_aio_result#,nng_aio_result(3)>>.
This function causes the callback associated with the _aio_ to called.
WARNING: It is mandatory that operation "providers" call this function
*EXACTLY ONCE* when they are finished with the operation. After calling this
function they *MUST NOT* perform any further accesses the _aio_.
WARNING: This function is only for I/O providers (those actually performing
the operation such as HTTP handler function or a transport provider); ordinary
users of the _aio_ should not have any need for this function.
== RETURN VALUES
None.
== ERRORS
None.
== SEE ALSO
<<nng_aio_alloc#,nng_aio_alloc(3)>>,
<<nng_aio_cancel#,nng_aio_cancel(3)>>,
<<nng_aio_result#,nng_aio_result(3)>>,
<<nng#,nng(7)>>
== COPYRIGHT
{copyright}
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