c++ - boost async_read

Question

我正在尝试创建一个 TCP 服务器，其中 Start() 方法会阻塞，直到连接被接受，然后开始一系列异步读取。我有以下代码，当我使用 telnet 连接时，我得到以下输出:

Waiting for a new connection

Connection accepted

terminate called throwing an exceptionAbort trap: 6

代码如下:

void SocketReadThread::Start()
{
    bzero(m_headerBuffer, HEADER_LEN);
    m_running = true;

    asio::io_service ios;
    asio::ip::tcp::acceptor acp (ios,
        boost::asio::ip::tcp::endpoint(boost::asio::ip::tcp::v4(), GUI_PORT));

    asio::ip::tcp::socket sock(ios);
    std::cout << "Waiting for a new connection" << std::endl;

    acp.accept(sock); 
    std::cout << "Connection accepted" << std::endl;

    asio::async_read(sock, asio::buffer(m_headerBuffer, HEADER_LEN),
        boost::bind(&SocketReadThread::handleReadHeader, shared_from_this(),
        asio::placeholders::error));

    ios.run();
}

void SocketReadThread::handleReadHeader(const system::error_code& error)
{
    std::cout << "Read two bytes!" << std::endl;
}

Answer 1

你应该包装你的 main()在 try {...} catch (std::exception& e) { cout << e.what(); } 中发挥作用 block 。