Socket reusing with boost asio

问题

I try to use a boost asio socket, bound to a local address/port combination. That works great. What doesn't work, is the re-using of the socket once the socket and application has been stopped and restarted.

    //
    // open the socket - it would also be opened by the async_connect() 
    // method but we might need an open socket to bind it
    _socket.open(boost::asio::ip::tcp::v4());

    if ( _bindLocal ) {
        boost::asio::socket_base::reuse_address option(true);
        _socket.set_option(option);
        _socket.bind( _localEndpoint );
    }

    // Invoke async. connect. Immediate return, no throw.
    _socket.async_connect(_remoteEndpoint,
        boost::bind(&MyTransceiver::handleConnect, this,
            boost::asio::placeholders::error));

What am I missing? Is the ordering of the open(), set_option() and bind() call correct?

回答1:

The code looks fine. Try to use error_code to get the result of your set_option() call.

boost::system::error_code ec;
_socket.set_option(boost::asio::socket_base::reuse_address(true), ec);

来源：https://stackoverflow.com/questions/8433070/socket-reusing-with-boost-asio