tcp_connection_ctx_base.hpp

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/*
    restinio
*/
 
/*!
    A base class for all classes that deal with connection context.
*/
 
#pragma once
 
#include <memory>
 
#include <restinio/connection_state_listener.hpp>
 
namespace restinio
{
 
//
// tcp_connection_ctx_base_t
//
 
//! TCP connection base.
/*!
    Class serves as a root class for all connection context wrappers,
    that can be passed in asio callbacks.
*/
class tcp_connection_ctx_base_t
    :   public std::enable_shared_from_this< tcp_connection_ctx_base_t >
{
    public:
        tcp_connection_ctx_base_t(connection_id_t id )
            :   m_connection_id{ id }
        {}
 
        virtual ~tcp_connection_ctx_base_t() = default;
 
        //! Get connection id.
        connection_id_t connection_id() const noexcept { return m_connection_id; }
 
        //! Check timeouts for all activities.
        virtual void
        check_timeout(
            //! A handle to itself (eliminates one shared_ptr instantiation).
            std::shared_ptr< tcp_connection_ctx_base_t > & self ) = 0;
 
    protected:
 
        //! Cast self to derived class.
        template < typename Derived >
        std::shared_ptr< Derived >
        shared_from_concrete()
        {
            return std::static_pointer_cast< Derived >( shared_from_this() );
        }
 
    private:
        //! Id of a connection.
        const connection_id_t m_connection_id;
};
 
//! Alias for http connection handle.
using tcp_connection_ctx_handle_t = std::shared_ptr< tcp_connection_ctx_base_t >;
 
//! Alias for http connection weak handle.
using tcp_connection_ctx_weak_handle_t = std::weak_ptr< tcp_connection_ctx_base_t >;
 
} /* namespace restinio */