lugre_net.h

Go to the documentation of this file.

/*
http://www.opensource.org/licenses/mit-license.php  (MIT-License)

Copyright (c) 2007 Lugre-Team

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in
all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
THE SOFTWARE.
*/
#ifndef LUGRE_NET_H
#define LUGRE_NET_H

#ifdef WIN32
    #include <winsock2.h>
#endif

#include "lugre_fifo.h"
#include "lugre_smartptr.h"
#include <set>
#include <string>

//winsock workaround
#ifndef INVALID_SOCKET
#define INVALID_SOCKET  (SOCKET)(~0)
#endif

#ifndef SOCKET
#define SOCKET int
#endif

#ifndef SOCKET_ERROR
#define SOCKET_ERROR    -1
#endif


// SOCKET = int

class   lua_State;

namespace Lugre {

class cConnection;
class cBroadcast;
class cNetListener;

// ****** ****** ****** cNet


class cNet {
public:
    std::set<cNetListener*> mlListener;
    std::set<cConnection*>  mlCons;
    std::set<cConnection*>  mlDyingCons;
    std::set<cConnection*>  mlDeadCons;
    std::set<cBroadcast*>   mlBroadCasts;

    inline static cNet& GetSingleton () {
        static cNet* mSingleton = 0;
        if (!mSingleton) mSingleton = new cNet();
        return *mSingleton;
    }
    void    Step    ();

    cConnection*    Connect (const char* szHost,const int iPort);
    cConnection*    Connect (const unsigned int iHost,const int iPort);
    cNetListener*   Listen  (const int iPort);

    cConnection*    PopDeadCon();

    cNet    ();
    ~cNet   ();

    static unsigned int GetHostByName   (const char *szHost);
    static int          ConnectSocket   (uint32 iIP,const int iPort);
    static bool         IsInvalidSocket (const int iSocket);
    static void         CloseSocket     (const int iSocket);
    static int          Send            (const int iSocket,const char* pBuffer,const int iBufferSize,const int iFlags);
    static int          Recv            (const int iSocket,char* pBuffer,const int iBufferSize,const int iFlags);
};


// ****** ****** ****** cConnection


class cConnection : public cSmartPointable {
public:
    int             miSocket;
    std::string     msHost;
    int             miPort;
    cFIFO*          mpInBuffer;
    cFIFO*          mpOutBuffer;
    bool            mbOwnBuffers;
    uint32          miRemoteAddr;
    unsigned char   mIP[4];

    cConnection     (); // local connection, mbOwnBuffers
    cConnection     (cConnection* con); // local connection, !mbOwnBuffers
    cConnection     (const int iSocket,const char* szHost,const int iPort,const uint32 iRemoteAddr); // connect out
    cConnection     (const int iSocket,const uint32 iRemoteAddr); // connection coming in
    virtual ~cConnection    ();
    void    Init    ();

    void    Close       ();
    void    SendPush    (cFIFO& source,const bool bWrite);
    void    Step        (const bool bRead,const bool bWrite, const bool bExcept);
    bool    IsLocal     ();
    const bool  IsConnected();
};

// ****** ****** ****** cBroadcast

class cBroadcast { public:
    cFIFO                   mOutBuffer;
    std::set<cConnection*>  mlCons;

    cBroadcast();
    ~cBroadcast();
    void    Step        ();
};

// ****** ****** ****** cNetListener


class cNetListener : public cSmartPointable {
public:
    std::set<cConnection*>  mlCons; // this is used for handling new connections
    int     miPort;
    int     miListenSocket;

    cNetListener    (int iListenSocket,int iPort);
    ~cNetListener   ();
    void    Step    ();
    cConnection*    PopAccepted();
};

// ****** ****** ****** cUDP_ReceiveSocket

class cUDP_ReceiveSocket : public cSmartPointable {
public:
    int     miPort;
    int     miSocket;

    cUDP_ReceiveSocket  (const int iPort);
    ~cUDP_ReceiveSocket ();

    int     Receive     (cFIFO& pFIFO,uint32& iAddr);
};

// ****** ****** ****** cUDP_SendSocket

class cUDP_SendSocket : public cSmartPointable {
public:
    int     miSocket;

    cUDP_SendSocket     ();
    ~cUDP_SendSocket    ();

    int     Send        (const uint32 iAddr,const int iPort,const char* pData,const int iDataLen);
    int     Send        (const uint32 iAddr,const int iPort,cFIFO& pFIFO,const int iDataLen=0);
    
    void SetBroadcast   (char broadcast);
};

// ****** ****** ****** lua binding

void    LuaRegisterNet  (lua_State *L);

};

#endif