C++ Boost asio connect and stream

I'm new to Websockets, and I'm confused as to the need for the boost::beast::websocket::stream class. I'm attaching an example code below. From what I gather, socket.connect would talk to the I/O object and sort of establish the connection with the server. Why then would I need to pass this to a websocket::stream class, and perform the handshake, writing and reading data using this class? Shouldn't there be any methods within socket that would do this? Could someone help elaborate? Thank you

#include <boost/beast.hpp>
#include <boost/asio.hpp>
#include <boost/system/error_code.hpp>

#include <iomanip>
#include <iostream>
#include <thread>

using tcp = boost::asio::ip::tcp;


int main()
{
    std::string url = "ltnm.learncppthroughprojects.com";
    std::string port = "80";
    // Create a I/O context
    boost::asio::io_context ioc {};
    // Create an I/O object, that takes in the io context as an intermediary to talk with you
    tcp::socket socket (ioc);

    // Resolve address to ip
    boost::system::error_code ec {};
    tcp::resolver resolver {ioc};
    auto resolverIt {resolver.resolve(url, port, ec)};

    // Talk to the socket using I/O context
    socket.connect(*resolverIt);

    // Now that talking to the socket is succcessful,
    // we tie the socket object to a websocket stream
    boost::beast::websocket::stream<boost::beast::tcp_stream> ws(std::move(socket));

    // Now, perform a websocket handshake
    ws.handshake(url,"/echo",ec);

    // Now the socket is connected to the server, write data to it
    boost::asio::const_buffer data("toioest",7);
    ws.write(data);
    
    boost::beast::flat_buffer response;
    ws.read(response);

    std::cout<<boost::beast::make_printable(response.data());
    
}