InetTCPSlave.h

/* Open SoundControl kit in C++                                              */
/* Copyright (C) 2002-2004 libOSC++ contributors. See AUTHORS                */
/*                                                                           */
/* This library is free software; you can redistribute it and/or             */
/* modify it under the terms of the GNU Lesser General Public                */
/* License as published by the Free Software Foundation; either              */
/* version 2.1 of the License, or (at your option) any later version.        */
/*                                                                           */
/* This library is distributed in the hope that it will be useful,           */
/* but WITHOUT ANY WARRANTY; without even the implied warranty of            */
/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU         */
/* Lesser General Public License for more details.                           */
/*                                                                           */
/* You should have received a copy of the GNU Lesser General Public          */
/* License along with this library; if not, write to the Free Software       */
/* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */
/*                                                                           */
/* For questions regarding this program contact                              */
/* Daniel Holth <dholth@fastmail.fm> or visit                                */
/* http://wiretap.stetson.edu/                                               */

/*
 * This class was written by Martin Rumori (martin@rumori.de)
 */

#ifndef LIBOSC_INETTCPSLAVE_H
#define LIBOSC_INETTCPSLAVE_H

#include "InetTransport.h"
#include "InetTCPMaster.h"

#include <errno.h>

#ifdef    __CYGWIN__
#include <w32api/winsock2.h>
#include <w32api/ws2tcpip.h>
#include <poll.h>
// this is defined in sys/socket.h, but we mustn't include that and winsock2
#define SHUT_RDWR 2
#else  // __CYGWIN__
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/poll.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#endif // __CYGWIN__


class InetTCPSlave : public InetTransport
{

  friend class InetTCPMaster;

public:
  InetTCPSlave (InetTCPMaster *tcpMaster,
                InetOSCAddrType addrType,
                int socket,
                struct sockaddr *remoteAddr);

  virtual ~InetTCPSlave ();

  bool handle ();

  bool transmit(const std::string& data);

  const int getHandle () const;

  bool disconnect ();

  const struct sockaddr *const getRemoteAddr () const;

  const std::string getRemoteHost () const;

  const int getRemotePort () const;

  const bool isConnected () const;

  const bool isWriteBlocking () const;

  void setWriteBlocking (bool writeblock = true);

  const std::string getStatusString (void);

  virtual std::string getName();


protected:

  bool justDisconnect ();


private:

  typedef enum
    {
      IDLE,             // nothing to do
      GETTING_SIZE,     // reading the packet size
      GETTING_PACKET,   // reading the packet itself
      DROPPING_PACKET   // dropping a packet being too long
                        // (to regain 'sync' with data stream)
    } InetTCPSlaveState;

  bool _connected;

  bool _writeblock;

  InetTCPSlaveState _rstate;

  std::string _rbuf;

  uint32_t _rsize;

  uint32_t _gotbytes;

  InetTCPMaster *const _tcpMaster;

  const struct sockaddr *_remoteAddr;

};

#endif // #ifndef LIBOSC_INETTCPSLAVE_H

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