d398a6ced2
- CitrineOS core extracted (CSMS OCPP 2.0.1) - OpenOCPP extracted (firmware OCPP 1.6J/2.0.1) - ShapeShifter library installed (pip install -e) - ShapeShifter specification extracted - EVerest extracted TODO updated with progress
83 lines
2.6 KiB
C++
83 lines
2.6 KiB
C++
// SPDX-License-Identifier: Apache-2.0
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// Copyright 2020 - 2025 Pionix GmbH and Contributors to EVerest
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/**
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* @example test_mqtt_client.cpp Creates two MQTT clients that ping/pong messages to each other
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*/
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#include <cstdio>
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#include <everest/io/event/fd_event_handler.hpp>
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#include <everest/io/mqtt/mqtt_client.hpp>
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#include <iostream>
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#include <string>
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#include <thread>
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using namespace everest::lib::io::event;
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using namespace everest::lib::io;
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using namespace std::chrono_literals;
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constexpr auto HOST = "localhost";
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constexpr std::uint16_t PORT = 1883;
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using payloadT = mqtt::mqtt_client::ClientPayloadT;
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using generic_client = typename mqtt::mqtt_client::interface;
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// Creates the error handler for the clients
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mqtt::mqtt_client::cb_error make_error_cb(mqtt::mqtt_client& client) {
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return [&](int error, std::string const& msg) {
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std::cerr << "ERROR ( " << error << " ): " << msg << std::endl;
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if (error) {
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std::this_thread::sleep_for(1s);
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client.reset();
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}
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};
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}
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// Creates the RX handler for the client
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mqtt::mqtt_client::cb_rx make_rx_callback(mqtt::mqtt_client& client, std::string tar) {
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return [&, tar](payloadT const& data, generic_client& tx) {
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std::cout << &client << "\n"
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<< "topic: " << data.topic << "\n"
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<< "msg: " << data.message << std::endl;
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payloadT dataset;
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auto c = std::stoi(data.message) + 1;
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dataset.message = std::to_string(c);
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dataset.topic = tar;
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tx.tx(dataset);
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};
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}
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int main(int, char*[]) {
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std::cout << "mqtt_client ping/pong demonstration" << std::endl;
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// Create first mqtt_client
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mqtt::mqtt_client client(HOST, PORT);
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// Create and assign error handler
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client.set_error_handler(make_error_cb(client));
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// Create and assign rx handler
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client.set_message_handler(make_rx_callback(client, "test/server/recv"));
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// Subscribe to topic
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client.subscribe("test/client/recv/#");
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// Create second mqtt_client
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mqtt::mqtt_client server(HOST, PORT);
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server.set_error_handler(make_error_cb(server));
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server.set_message_handler(make_rx_callback(server, "test/client/recv"));
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server.subscribe("test/server/recv/#");
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// Create event handler and register clients
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fd_event_handler ev_handler;
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ev_handler.register_event_handler(&client);
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ev_handler.register_event_handler(&server);
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// Send first message to trigger ping/pong
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client.tx({"test/server/recv", "1"});
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// event loop
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while (true) {
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// Handles all the work and blocks if there is nothing to do.
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ev_handler.poll();
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}
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return 0;
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}
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