How can I use Boost.Asio for TCP connections in C++?

How can I use Boost.Asio for TCP connections in C++?

You can use Boost.Asio to handle asynchronous TCP connections in C++. Start by including the necessary headers and setting up an io_context.

What are the basic steps to establish a TCP connection?

First, create a socket using boost::asio::ip::tcp::socket, then resolve the endpoint with boost::asio::ip::tcp::resolver, and finally connect using the connect method.

Can you show me a simple code example?

Sure! Here's a basic example:

#include <boost/asio.hpp>

int main() {
    boost::asio::io_context io_context;
    boost::asio::ip::tcp::socket socket(io_context);
    boost::asio::ip::tcp::resolver resolver(io_context);
    auto endpoints = resolver.resolve("example.com", "80");
    boost::asio::connect(socket, endpoints);
    // Now the socket is connected!
}

This code connects to example.com on port 80.

What if I want to handle multiple connections?

You can use boost::asio::io_context::run() in a loop and manage multiple sockets with a std::vector or similar container to handle multiple connections asynchronously.