连接已关闭，但`asio::ip::tcp::socket::write_some`在第一次调用时返回成功

if (socket.is_open()) {
    boost::system::error_code ec;
    size_t bytes_transferred = socket.write_some(boost::asio::buffer(data), ec);
    if (ec) {
        // 处理错误
        std::cerr << "Write error: " << ec.message() << std::endl;
    }
} else {
    // 连接已关闭
    std::cerr << "Socket is not open." << std::endl;
}

void handle_write(const boost::system::error_code& error, size_t bytes_transferred) {
    if (error) {
        // 处理错误
        std::cerr << "Write error: " << error.message() << std::endl;
    } else {
        // 成功发送数据
        std::cout << "Bytes transferred: " << bytes_transferred << std::endl;
    }
}

// 异步写操作
socket.async_write_some(boost::asio::buffer(data), handle_write);

boost::system::error_code ec;
size_t bytes_transferred = socket.write_some(boost::asio::buffer(data), ec);
if (ec) {
    // 处理错误
    std::cerr << "Write error: " << ec.message() << std::endl;
} else {
    // 检查连接状态
    if (!socket.is_open()) {
        std::cerr << "Socket is not open after write." << std::endl;
    }
}