source: cheroxy/trunk/include/CRXSocket.h@ 14

/**
 * CRXSocket.h
 */
#ifndef __CRXSOCKET_H__
#define __CRXSOCKET_H__

#ifdef WIN32
# include <WinSock2.h>
#else
# include <netinet/in.h>
# include <sys/socket.h>
# include <arpa/inet.h>
# include <netdb.h>
#endif

#include <string>

using namespace std;

#define TCPSOCKET_NO_TIMEOUT                    -1

#define ERROR_TCPSOCKET                         -1000

#define ERROR_TCPSOCKET_FAILED_TO_INITIALIZE    ERROR_TCPSOCKET - 1
#define ERROR_TCPSOCKET_ALREADY_IN_USE          ERROR_TCPSOCKET - 2
#define ERROR_TCPSOCKET_FAILED_TO_CREATE_SOCKET ERROR_TCPSOCKET - 3
#define ERROR_TCPSOCKET_FAILED_TO_GET_HOSTNAME  ERROR_TCPSOCKET - 4
#define ERROR_TCPSOCKET_FAILED_TO_CONNECT       ERROR_TCPSOCKET - 5
#define ERROR_TCPSOCKET_FAILED_TO_BIND          ERROR_TCPSOCKET - 6
#define ERROR_TCPSOCKET_FAILED_TO_LISTEN        ERROR_TCPSOCKET - 7
#define ERROR_TCPSOCKET_FAILED_TO_ACCEPT        ERROR_TCPSOCKET - 8
#define ERROR_TCPSOCKET_FAILED_TO_SEND          ERROR_TCPSOCKET - 9
#define ERROR_TCPSOCKET_FAILED_TO_RECEIVE       ERROR_TCPSOCKET - 10
#define ERROR_TCPSOCKET_NOT_READY               ERROR_TCPSOCKET - 11
#define ERROR_TCPSOCKET_FAILED_TO_SETSOCKOPT    ERROR_TCPSOCKET - 12

class CRXSocket
{
private:
    static bool         mInitialized;
    struct sockaddr_in  mAddress;
    int                 mSocket;

private:
    /**
     * create socket.
     * @return success : socket id, failed : -1.
     */
    int         CreateSocket    (void);

    /**
     * check socket status.
     * @return available : true, else : false.
     */
    inline bool IsCreated       (void) const;

    inline bool IsReady         (void) const;

    /**
     * static functions
     */
    static int  Initialize      (void);

    static bool IsInitialized   (void);

    static void Finalize        (void);


public:
    /**
     * common functions
     */
    CRXSocket                   (int aSocket = 0);

    ~CRXSocket                  (void);

    void        Attach          (int aSocket);

    int         Detach          (void);

    void        Close           (void);

                operator int    (void) const;

    CRXSocket   & operator =    (int aSocket);

    /**
     * for server
     */
    int CreateServer            (const unsigned short   aPort,
                                 const int              aBacklog = 5,
                                 struct sockaddr_in     * aAddress = NULL);

    int Accept                  (struct sockaddr_in * aRemoteAddress = NULL,
                                 int                * aAddressLength = NULL);

    /**
     * for client
     */
    int Connect                 (const std::string      aUrl,
                                 const unsigned short   aPort,
                                 const int              aTimeout = TCPSOCKET_NO_TIMEOUT);

    /**
     * for communication
     */
    int Send                    (char   * aBuffer,
                                 int    aSize);

    int Receive                 (char   * aBuffer,
                                 int    aSize);
};

#endif // #ifndef __CRXSOCKET_H__