这个问题有点烦人,我无法编译下面的代码。您必须编译下面的代码。
我在使用 boost asio 时遇到了一些问题,我试图将接受连接的逻辑抽象为一个统一的抽象,以便我可以使用常规 TCP/IP 统一启动 Windows 命名管道和 Unix 域套接字的连接。
下面的代码中显示了 3 个类,前 2 个是接受 TCP 连接的实现,下面的第三个类是根据前 2 个实现的泛型类。我在boost::bind
调用时遇到问题。问题可能在于我对语义的理解。
如果我创建TcpDestinationAcceptor::handle_accept
一个常规成员函数(即,不是模板成员函数),导致我没有传递AcceptHandler
参数。代码编译得很好。注意:我不会从TcpDestinationAcceptor::StartAccepting
.
注意:我已经开始了不同的设计,如果可能的话,我仍然想继续这个设计。
自包含代码:
#include <boost/asio/ip/tcp.hpp>
#include <boost/asio/io_service.hpp>
#include <boost/shared_ptr.hpp>
#include <boost/bind.hpp>
#include <boost/asio/placeholders.hpp>
class TcpDestinationConnection
{
public:
typedef boost::asio::ip::tcp::socket t_io_object;
TcpDestinationConnection(boost::asio::io_service & io_s)
: m_io_object(io_s) {} ;
t_io_object & io_object() { return m_io_object; }
private:
t_io_object m_io_object;
};
class TcpDestinationAcceptor
{
public:
typedef boost::asio::ip::tcp::acceptor t_acceptor;
typedef boost::shared_ptr<TcpDestinationConnection> t_connection_ptr;
TcpDestinationAcceptor( boost::asio::io_service & io_s)
: m_io_service(io_s),
m_acceptor(io_s)
{
m_acceptor.open(boost::asio::ip::tcp::v4());
}
TcpDestinationAcceptor( boost::asio::io_service & io_s ,
const boost::asio::ip::tcp::endpoint & endpoint)
: m_io_service(io_s),
m_acceptor(io_s, endpoint)
{
m_acceptor.open(boost::asio::ip::tcp::v4());
}
t_acceptor & acceptor() { return m_acceptor; }
template<typename AcceptHandler>
void StartAccepting(AcceptHandler h)
{
t_connection_ptr new_session(new TcpDestinationConnection(m_io_service));
m_acceptor.async_accept( new_session->io_object(),
boost::bind( &TcpDestinationAcceptor::handle_accept<AcceptHandler>, this,
boost::asio::placeholders::error, new_session, h));
}
template<typename AcceptHandler>
void handle_accept(const boost::system::error_code & err, t_connection_ptr cur, AcceptHandler h) {
}
private:
boost::asio::io_service & m_io_service;
boost::asio::ip::tcp::acceptor m_acceptor;
};
template<typename t_acceptor>
class ConnectionOracle
{
public:
ConnectionOracle()
: m_io_service(),
m_acceptor(m_io_service) {}
typename t_acceptor::t_acceptor & native_acceptor() { return m_acceptor.acceptor(); }
boost::asio::io_service & io_service() { return m_io_service; }
void StartConnection( typename t_acceptor::t_connection_ptr connection,
boost::system::error_code & error)
{
}
void Begin()
{
m_acceptor.StartAccepting( boost::bind( &ConnectionOracle::StartConnection,this,
_1,
boost::asio::placeholders::error));
m_io_service.run();
}
private:
boost::asio::io_service m_io_service;
t_acceptor m_acceptor;
};
int main()
{
ConnectionOracle<TcpDestinationAcceptor> ConOracle;
ConOracle.native_acceptor().
bind(boost::asio::ip::tcp::endpoint(boost::asio::ip::tcp::v4(),50000));
ConOracle.Begin();
return 0;
}