C++ 如何通过boost asio支持TCP服务器中的多个连接
我有TCP服务器的以下代码:C++ 如何通过boost asio支持TCP服务器中的多个连接,c++,networking,boost,tcp,boost-asio,C++,Networking,Boost,Tcp,Boost Asio,我有TCP服务器的以下代码: #include <algorithm> #include <boost/asio.hpp> #include <boost/bind.hpp> #include <boost/enable_shared_from_this.hpp> #include <boost/shared_ptr.hpp> #include <iostream> #include <string> us
#include <algorithm>
#include <boost/asio.hpp>
#include <boost/bind.hpp>
#include <boost/enable_shared_from_this.hpp>
#include <boost/shared_ptr.hpp>
#include <iostream>
#include <string>
using boost::asio::ip::tcp;
class tcp_connection
: public boost::enable_shared_from_this<tcp_connection>
{
public:
typedef boost::shared_ptr<tcp_connection> pointer;
static pointer create(boost::asio::io_service& io_service)
{
return pointer(new tcp_connection(io_service));
}
tcp::socket& socket()
{
return _socket;
}
void start()
{
boost::asio::async_read_until(
_socket
, _message
, "\r\n"
, boost::bind(
&tcp_connection::handle_read
, this->shared_from_this()
, boost::asio::placeholders::error
)
);
}
private:
tcp_connection(boost::asio::io_service& io_service)
: _socket(io_service) {}
void handle_read(const boost::system::error_code& error)
{
if (!error)
{
std::cout << &_message << '\n';
}
}
tcp::socket _socket;
boost::asio::streambuf _message;
};
class tcp_server
{
public:
tcp_server(boost::asio::io_service& io_service)
: _acceptor(io_service, tcp::endpoint(tcp::v4(), 13))
{
start_accept();
}
private:
void start_accept()
{
tcp_connection::pointer new_connection =
tcp_connection::create(_acceptor.get_io_service());
_acceptor.async_accept(
new_connection->socket()
, boost::bind(
&tcp_server::handle_accept
, this
, new_connection
, boost::asio::placeholders::error
)
);
}
void handle_accept(
tcp_connection::pointer new_connection
, const boost::system::error_code& error
)
{
if (!error)
{
new_connection->start();
}
start_accept();
}
tcp::acceptor _acceptor;
};
int main()
{
try
{
boost::asio::io_service io_service;
tcp_server server(io_service);
io_service.run();
}
catch (const std::exception& ex)
{
std::cerr << ex.what() << '\n';
}
}
如果是,我如何解决这个问题?如何通过支持多个连接的boost asio编写一个最低限度的异步TCP服务器?此代码支持多个同时连接,因为使用的boost::asio调用是异步的。新的\u连接->start()立即返回,并调用start\u accept()
void handle_accept(
tcp_connection::pointer new_connection
, const boost::system::error_code& error
)
{
// We are unable to accept new connections
if (!error)
{
new_connection->start();
}
// before start_accept function call
start_accept();
}