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9a6788c913
Summary: related to T15261, T15262 - all examples are added to CI checks - as a result, CMakeLists.txt in example folder is reworked to build all examples instead of one - also removed chapter Building with CMake temporarily (it will be back) - all examples accept runtime arguments (brokers, port, clientid) (default: hivemq public broker) - implemented example suggestions by R.Perez, most notable: - all examples include mqtt headers they use (no more unified headers) - multithreaded examples use thread_pool instead of asio::io_context - all examples use logger with log_level::info by default Reviewers: ivica Reviewed By: ivica Subscribers: iljazovic, miljen Differential Revision: https://repo.mireo.local/D32602
68 lines
2.2 KiB
C++
68 lines
2.2 KiB
C++
//
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// Copyright (c) 2023-2024 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_websocket_tcp
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#include <iostream>
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#include <string>
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#include <boost/asio/io_context.hpp>
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#include <boost/asio/detached.hpp>
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#include <boost/asio/ip/tcp.hpp>
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#include <boost/beast/websocket.hpp>
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#include <async_mqtt5/logger.hpp>
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#include <async_mqtt5/mqtt_client.hpp>
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#include <async_mqtt5/types.hpp>
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#include <async_mqtt5/websocket.hpp> // WebSocket traits
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struct config {
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std::string brokers = "broker.hivemq.com/mqtt"; // Path example: localhost/mqtt
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uint16_t port = 8000; // 8083 is the default Webscoket/TCP MQTT port. However, HiveMQ's public broker uses 8000 instead.
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std::string client_id = "async_mqtt5_tester";
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};
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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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// Construct the Client with WebSocket/TCP as the underlying stream and enabled logging.
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// Since we are not establishing a secure connection, set the TlsContext template parameter to std::monostate.
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async_mqtt5::mqtt_client<
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boost::beast::websocket::stream<boost::asio::ip::tcp::socket>,
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std::monostate,
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async_mqtt5::logger
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> client(ioc, {}, async_mqtt5::logger(async_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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//async_mqtt5::mqtt_client<boost::beast::websocket::stream<boost::asio::ip::tcp::socket>> client(ioc);
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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<async_mqtt5::qos_e::at_most_once>(
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"async-mqtt5/test", "Hello world!",
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async_mqtt5::retain_e::no, async_mqtt5::publish_props {},
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[&client](async_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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