Connection.h

// Connection.h
 
// This file is part of bes, A C++ back-end server implementation framework
// for the OPeNDAP Data Access Protocol.
 
// Copyright (c) 2004-2009 University Corporation for Atmospheric Research
// Author: Patrick West <pwest@ucar.edu> and Jose Garcia <jgarcia@ucar.edu>
//
// 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
//
// You can contact University Corporation for Atmospheric Research at
// 3080 Center Green Drive, Boulder, CO 80301
 
// (c) COPYRIGHT University Corporation for Atmospheric Research 2004-2005
// Please read the full copyright statement in the file COPYRIGHT_UCAR.
//
// Authors:
//      pwest       Patrick West <pwest@ucar.edu>
//      jgarcia     Jose Garcia <jgarcia@ucar.edu>
 
#ifndef Connection_h
#define Connection_h 1
 
#include <iostream>
#include <string>
#include <map>
 
#include "BESObj.h"
#include "Socket.h"
 
class Connection: public BESObj {
protected:
    Socket *_mySock = nullptr;
    std::ostream *_out = nullptr;
    bool _brokenPipe = false;
 
    Connection() = default;
 
    virtual void send(const std::string &buffer) = 0;
    virtual void sendChunk(const std::string &buffer, std::map<std::string, std::string> &extensions) = 0;
 
public:
    ~Connection() override = default;
 
    virtual void initConnection() = 0;
    virtual void closeConnection() = 0;
 
    virtual std::string exit() = 0;
 
    virtual void send(const std::string &buffer, std::map<std::string, std::string> &extensions) = 0;
    virtual void sendExtensions(std::map<std::string, std::string> &extensions) = 0;
    virtual void sendExit() = 0;
    virtual bool receive(std::map<std::string, std::string> &extensions, std::ostream *strm = nullptr) = 0;
 
    virtual Socket * getSocket()
    {
        return _mySock;
    }
 
    virtual bool isConnected()
    {
        if (_mySock) return _mySock->isConnected();
        return false;
    }
 
    virtual void setOutputStream(std::ostream *strm)
    {
        _out = strm;
    }
    virtual std::ostream * getOutputStream()
    {
        return _out;
    }
 
    virtual void brokenPipe()
    {
        _brokenPipe = true;
    }
 
    virtual unsigned int getRecvChunkSize() = 0;
    virtual unsigned int getSendChunkSize() = 0;
 
    void dump(std::ostream &strm) const override;
};
 
#endif // Connection_h