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= nng_http_server_set_tls(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_http_server_set_tls - set HTTP server TLS configuration
== SYNOPSIS
[source, c]
-----------
#include <nng/nng.h>
#include <nng/supplemental/http/http.h>
int nng_http_server_set_tls(nng_http_server *s, nng_tls_config *cfg);
-----------
== DESCRIPTION
The `nng_http_server_set_tls()` sets the TLS configuration of server _s_ to
_cfg_.
This change overwrites any previous TLS configuration.
WARNING: This also invalidates any previously obtained values from
<<nng_http_server_get_tls#,nng_http_server_get_tls(3)>>.
If the server is already running (i.e. it has been started with
<<nng_http_server_start#,nng_http_server_start(3)>>) then this will
fail with `NNG_EBUSY`.
TIP: Generally, the _cfg_ must have a configured private key, set with
<<nng_tls_config_own_cert#,nng_tls_config_own_cert(3)>> or similar.
== RETURN VALUES
This function returns 0 on success, and non-zero otherwise.
== ERRORS
`NNG_EBUSY`:: Server instance is running.
`NNG_ENOMEM`:: Insufficient free memory exists.
`NNG_ENOTSUP`:: Either HTTP or TLS not supported.
== SEE ALSO
<<nng_http_server_get_tls#,nng_http_server_get_tls(3)>>,
<<nng_http_server_hold#,nng_http_server_hold(3)>>,
<<nng_http_server_start#,nng_http_server_start(3)>>,
<<nng_tls_config_alloc#,nng_tls_config_alloc(3)>>,
<<nng_strerror#,nng_strerror(3)>>,
<<nng#,nng(7)>>
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