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