/home/jander/temp/etherdune/TCPSocket.h

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// EtherDune TCP implementation as a NetworkService
// Author: Javier Peletier <jm@friendev.com>
// Summary: Implements the TCP protocol
//
// Copyright (c) 2015 All Rights Reserved, http://friendev.com
//
// This source is subject to the GPLv2 license.
// Please see the License.txt file for more information.
// All other rights reserved.
//
// THIS CODE AND INFORMATION ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY 
// KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE
// IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
// PARTICULAR PURPOSE.

#ifndef _TCPSOCKET_H_
#define _TCPSOCKET_H_

#include <ACross.h>

#include "Socket.h"
#include "Stateful.h"

class TCPSocket;


class TCPSocket : public Socket, public Stateful
{

private:

    uint32_t sequenceNumber;
    uint32_t ackNumber;
    TCPFlags nextFlags;

    bool onPacketReceived();
    void processOutgoingBuffer();
    void prepareTCPPacket(bool options, uint16_t dataLength);
    void releaseWindow(int32_t& bytesAck);
    void tick();
    void sendSYN(bool ack);
    __FlashStringHelper* getStateString();

public:

    TCPSocket();

    void connect();
    void close();
    void terminate();
    void listen();
    void accept();
    void accept(TCPSocket& listener);
    void push();

    virtual void onConnect();
    virtual void onConnectRequest();
    virtual void onClose();
    virtual void onReceive(uint16_t len, const byte* data);
    virtual void onTerminate();

};



#endif