= nng_ctx_close(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_ctx_close - close context

== SYNOPSIS

[source, c]
----
#include <nng/nng.h>

int nng_ctx_close(nng_ctx ctx);
----

== DESCRIPTION

The `nng_ctx_close()` function closes the context _ctx_.
Messages that have been submitted for sending may be flushed or delivered,
depending upon the transport.

Further attempts to use the context after this call returns will result
in `NNG_ECLOSED`.
Threads waiting for operations on the context when this
call is executed may also return with an `NNG_ECLOSED` result.

NOTE: Closing the socket associated with _ctx_
(using xref:nng_close.3.adoc[`nng_close()`]) also closes this context.

== RETURN VALUES

This function returns 0 on success, and non-zero otherwise.

== ERRORS

[horizontal]
`NNG_ECLOSED`:: The context _ctx_ is already closed or was never opened.

== SEE ALSO

[.text-left]
xref:nng_ctx_open.3.adoc[nng_ctx_open(3)],
xref:nng_strerror.3.adoc[nng_strerror(3)],
xref:nng_ctx.5.adoc[nng_ctx(5)],
xref:nng.7.adoc[nng(7)]