main.cpp
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/*
* Copyright (c) TrueBrain
*
* This source code is licensed under the MIT license found in the
* LICENSE file in the root directory of this source tree.
*/
#include <TrueMQTT.h>
#include <iostream>
#include <thread>
int main()
{
// Create a connection to the local broker.
TrueMQTT::Client client("localhost", 1883, "test");
client.setLogger(TrueMQTT::Client::LogLevel::WARNING, [](TrueMQTT::Client::LogLevel level, std::string message)
{ std::cout << "Log " << level << ": " << message << std::endl; });
client.setPublishQueue(TrueMQTT::Client::PublishQueueType::FIFO, 10);
client.setErrorCallback([](TrueMQTT::Client::Error error, std::string message)
{ std::cout << "Error " << error << ": " << message << std::endl; });
client.setLastWill("example/pubsub/lastwill", "example pubsub finished", true);
client.connect();
int stop = 0;
// Subscribe to the topic we will be publishing under in a bit.
client.subscribe("example/pubsub/test/subtest", [&stop](const std::string topic, const std::string payload)
{
std::cout << "Received message on exact topic " << topic << ": " << payload << std::endl;
stop++; });
client.subscribe("example/pubsub/test/subtest", [&stop](const std::string topic, const std::string payload)
{
std::cout << "Received message on exact topic " << topic << ": " << payload << std::endl;
stop++; });
client.subscribe("example/pubsub/+/subtest", [&stop](const std::string topic, const std::string payload)
{
std::cout << "Received message on single wildcard topic " << topic << ": " << payload << std::endl;
stop++; });
client.subscribe("example/pubsub/test/#", [&stop](const std::string topic, const std::string payload)
{
std::cout << "Received message on multi wildcard topic " << topic << ": " << payload << std::endl;
stop++; });
client.subscribe("example/pubsub/test/+", [&stop](const std::string topic, const std::string payload)
{
/* Never actually called, as we unsubscribe a bit later */ });
client.unsubscribe("example/pubsub/test/+");
// Publish a message on the same topic as we subscribed too.
client.publish("example/pubsub/test/subtest", "Hello World!", false);
// Wait till we receive the message back on our subscription.
while (stop < 4)
{
std::this_thread::sleep_for(std::chrono::milliseconds(10));
}
client.disconnect();
return 0;
}