tcp_state.h

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// Based on "Design Patterns: Elements of Reusable Object-Oriented Software"
// book by Erich Gamma, John Vlissides, Ralph Johnson, and Richard Helm 
//
// Created by Bartosz Rachwal. The National Institute of Advanced Industrial Science and Technology, Japan.

#ifndef OPERATIONAL_STATE_TCP_STATE_H_
#define OPERATIONAL_STATE_TCP_STATE_H_

#include "tcp_connection.h"

namespace operational
{
namespace state
{
class TcpState
{
    public:
    virtual ~TcpState() {}

    virtual void Transmit(TcpConnection*, TcpOctetStream*);
    virtual void ActiveOpen(TcpConnection*);
    virtual void PassiveOpen(TcpConnection*);
    virtual void Close(TcpConnection*);
    virtual void Synchronize(TcpConnection*);
    virtual void Acknowledge(TcpConnection*);
    virtual void Send(TcpConnection*);

    virtual std::string Info() const = 0;

    protected:
    static void ChangeState(TcpConnection*, TcpState*);
};
}
}

#endif