= nng_http_server_set_tls(3http)
//
// 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.

IMPORTANT: This also invalidates any previously obtained values from
xref:nng_http_server_get_tls.3http.adoc[`nng_http_server_get_tls()`].

If the server is already running (i.e. it has been started with
xref:nng_http_server_start.3http.adoc[`nng_http_server_start()`]) then this will
fail with `NNG_EBUSY`.

TIP: Generally, the _cfg_ must have a configured private key, set with
xref:nng_tls_config_own_cert.3tls.adoc[`nng_tls_config_own_cert()`] or similar.

== RETURN VALUES

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

== ERRORS

[horizontal]
`NNG_EBUSY`:: Server instance is running.
`NNG_ENOMEM`:: Insufficient free memory exists.
`NNG_ENOTSUP`:: Either HTTP or TLS not supported.

== SEE ALSO

[.text-left]
xref:nng_http_server_get_tls.3http.adoc[nng_http_server_get_tls(3http)],
xref:nng_http_server_hold.3http.adoc[nng_http_server_hold(3http)],
xref:nng_http_server_start.3http.adoc[nng_http_server_start(3http)],
xref:nng_tls_config_alloc.3tls.adoc[nng_tls_config_alloc(3tls)],
xref:nng_strerror.3.adoc[nng_strerror(3)],
xref:nng.7.adoc[nng(7)]