Can you provide examples of using Boost.Asio for UDP in C++?

Can you provide examples of using Boost.Asio for UDP in C++?

Sure! Here's a simple example of a UDP client using Boost.Asio:

#include <boost/asio.hpp>
#include <iostream>

int main() {
    boost::asio::io_context io_context;
    boost::asio::ip::udp::socket socket(io_context);
    socket.open(boost::asio::ip::udp::v4());

    boost::asio::ip::udp::endpoint receiver_endpoint(boost::asio::ip::address::from_string("127.0.0.1"), 12345);
    std::string message = "Hello, UDP server!";
    socket.send_to(boost::asio::buffer(message), receiver_endpoint);

    return 0;
}

This code creates a UDP client that sends a message to a server running on localhost.

What about a UDP server example?

Here's a basic example of a UDP server using Boost.Asio:

#include <boost/asio.hpp>
#include <iostream>

int main() {
    boost::asio::io_context io_context;
    boost::asio::ip::udp::socket socket(io_context, boost::asio::ip::udp::endpoint(boost::asio::ip::udp::v4(), 12345));

    char recv_buffer[1024];
    boost::asio::ip::udp::endpoint sender_endpoint;

    while (true) {
        size_t len = socket.receive_from(boost::asio::buffer(recv_buffer), sender_endpoint);
        std::cout << "Received: " << std::string(recv_buffer, len) << " from " << sender_endpoint.address().to_string() << std::endl;
    }
    return 0;
}

This server listens for incoming UDP messages on port 12345.

Can I use Boost.Asio for both TCP and UDP?

Yes, Boost.Asio supports both TCP and UDP. You can create separate sockets for each protocol and handle them accordingly.