C/C++ WebSocket client in C++

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To create a WebSocket client in C++ using the WebSocket++ library, you can follow these steps:

1. Install the WebSocket++ library: First, you'll need to download and install the WebSocket++ library from its website or through a package manager.
2. Include the necessary headers: In your C++ code, you'll need to include the websocketpp/client.hpp header to use the WebSocket client functionality.
3. Define a client: Next, you'll need to define a WebSocket client object using the websocketpp::client class.
4. Set up the client: You'll need to set up the client object by defining callback functions to handle events such as connection, disconnection, and received messages.
5. Connect to a WebSocket server: Once the client object is set up, you can connect to a WebSocket server using the client::connect method.
6. Send and receive messages: After the client is connected, you can send and receive messages using the client::send and client::receive methods.

Here's an example code snippet that demonstrates how to create a WebSocket client using WebSocket++:

#include <websocketpp/client.hpp>

int main() {
    using websocketpp::client;

    // Define a WebSocket client object
    client client;

    // Set up the client
    client.init_asio();
    client.set_tls_init_handler([](websocketpp::connection_hdl) {
        return websocketpp::lib::make_shared<boost::asio::ssl::context>(
            boost::asio::ssl::context::sslv23);
    });

    // Define a callback function to handle received messages
    client.set_message_handler([](websocketpp::connection_hdl hdl,
                                   client::message_ptr msg) {
        std::cout << "Received message: " << msg->get_payload() << std::endl;
    });

    // Connect to a WebSocket server
    client::connection_ptr connection = client.get_connection("wss://echo.websocket.org");
    client.connect(connection);

    // Send a message to the server
    client.send(connection, "Hello, server!");

    // Run the client event loop
    client.run();

    return 0;
}

In this example, the WebSocket client connects to the "wss://echo.websocket.org" server, sends a message to the server, and prints out any messages received from the server. The client event loop is run using the client::run method to process incoming messages and events.

Note that this is just a simple example and you'll need to modify the code to suit your specific use case.