[SFML Network] Program się wyłącza

#include <SFML/Network.hpp>
#include <iostream>
int main()
{
   
    sf::IpAddress a8 = sf::IpAddress::getPublicAddress();
    sf::TcpSocket socket;
    socket.connect( a8, 55001 );
   
    bool exit = false;
    while( exit == true )
    {
        // Send a message to the connected host
        std::string message;
        std::cin >> message;
        socket.send( message.c_str(), message.size() + 1 );
       
        // Receive an answer from the server
        char buffer[ 1024 ];
        std::size_t received = 0;
        socket.receive( buffer, sizeof( buffer ), received );
        std::cout << "The server said: " << buffer << std::endl;
       
    }
    return 0;
   
}

#include <SFML/Network.hpp>
#include <iostream>
int main()
{
   
    // Create a listener to wait for incoming connections on port 55001
    sf::TcpListener listener;
    listener.listen( 55001 );
   
    // Wait for a connection
    sf::TcpSocket socket;
    listener.accept( socket );
    std::cout << "New client connected: " << socket.getRemoteAddress() << std::endl;
    bool exit = false;
    while( exit == true )
    {
        // Receive a message from the client
        char buffer[ 1024 ];
        std::size_t received = 0;
        socket.receive( buffer, sizeof( buffer ), received );
        std::cout << "The client said: " << buffer << std::endl;
       
        // Send an answer
        std::string message = "Welcome, client";
        std::cin >> message;
        if( message == "exit" ) exit = true;
       
        socket.send( message.c_str(), message.size() + 1 );
    }
    return 0;
   
}