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684277dc40
Summary: related to T15996 Reviewers: iljazovic Reviewed By: iljazovic Subscribers: miljen Differential Revision: https://repo.mireo.local/D33773
103 lines
3.6 KiB
C++
103 lines
3.6 KiB
C++
//
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// Copyright (c) 2023-2025 Ivica Siladic, Bruno Iljazovic, Korina Simicevic
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//
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// Distributed under the Boost Software License, Version 1.0.
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// (See accompanying file LICENSE or copy at http://www.boost.org/LICENSE_1_0.txt)
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//
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//[hello_world_over_tls
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#include <boost/mqtt5/logger.hpp>
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#include <boost/mqtt5/mqtt_client.hpp>
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#include <boost/mqtt5/types.hpp>
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#include <boost/mqtt5/ssl.hpp> // OpenSSL traits
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#include <boost/asio/detached.hpp>
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#include <boost/asio/io_context.hpp>
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#include <boost/asio/ip/tcp.hpp>
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#include <boost/asio/ssl.hpp>
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#include <iostream>
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#include <string>
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struct config {
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std::string brokers = "broker.hivemq.com";
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uint16_t port = 8883; // 8883 is the default TLS MQTT port.
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std::string client_id = "boost_mqtt5_tester";
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};
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// External customization point.
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namespace boost::mqtt5 {
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// Specify that the TLS handshake will be performed as a client.
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template <typename StreamBase>
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struct tls_handshake_type<boost::asio::ssl::stream<StreamBase>> {
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static constexpr auto client = boost::asio::ssl::stream_base::client;
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};
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// This client uses this function to indicate which hostname it is
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// attempting to connect to at the start of the handshaking process.
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template <typename StreamBase>
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void assign_tls_sni(
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const authority_path& ap,
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boost::asio::ssl::context& /* ctx */,
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boost::asio::ssl::stream<StreamBase>& stream
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) {
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SSL_set_tlsext_host_name(stream.native_handle(), ap.host.c_str());
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}
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} // end namespace boost::mqtt5
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int main(int argc, char** argv) {
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config cfg;
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if (argc == 4) {
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cfg.brokers = argv[1];
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cfg.port = uint16_t(std::stoi(argv[2]));
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cfg.client_id = argv[3];
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}
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boost::asio::io_context ioc;
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// TLS context that the underlying SSL stream will use.
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// The purpose of the context is to allow us to set up TLS/SSL-related options.
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// See ``__SSL__`` for more information and options.
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boost::asio::ssl::context context(boost::asio::ssl::context::tls_client);
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// Set up the TLS context.
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// This step is highly dependent on the specific requirements of the Broker you are connecting to.
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// Each broker may have its own standards and expectations for establishing a secure TLS/SSL connection.
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// This can include verifying certificates, setting up private keys, PSK authentication, and others.
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// Construct the Client with ``__SSL_STREAM__`` as the underlying stream
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// with ``__SSL_CONTEXT__`` as the ``__TlsContext__`` type
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// and logging enabled.
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boost::mqtt5::mqtt_client<
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boost::asio::ssl::stream<boost::asio::ip::tcp::socket>,
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boost::asio::ssl::context,
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boost::mqtt5::logger
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> client(ioc, std::move(context), boost::mqtt5::logger(boost::mqtt5::log_level::info));
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// If you want to use the Client without logging, initialise it with the following line instead.
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//boost::mqtt5::mqtt_client<
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// boost::asio::ssl::stream<boost::asio::ip::tcp::socket>,
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// boost::asio::ssl::context
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//> client(ioc, std::move(context));
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client.brokers(cfg.brokers, cfg.port) // Broker that we want to connect to.
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.credentials(cfg.client_id) // Set the Client Identifier. (optional)
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.async_run(boost::asio::detached); // Start the Client.
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client.async_publish<boost::mqtt5::qos_e::at_most_once>(
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"boost-mqtt5/test", "Hello world!",
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boost::mqtt5::retain_e::no, boost::mqtt5::publish_props{},
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[&client](boost::mqtt5::error_code ec) {
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std::cout << ec.message() << std::endl;
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client.async_disconnect(boost::asio::detached);
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}
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);
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ioc.run();
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}
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//]
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