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CAVERNnet_mcast_c.hxx

/******************************************************************
 * CAVERNsoft
 * Copyright (C) 1994-2000 Electronic Visualization Laboratory,
 * all rights reserved
 * By Jason Leigh, Yong-joo Cho, Naveen Krishnaprasad, Chris Scharver,
 * Stuart Bailey, Atul Nayak, Shalini Venkataraman 
 * University of Illinois at Chicago
 * 
 * This publication and its text and code may not be copied for commercial 
 * use without the express written permission of the University of Illinois
 * at Chicago.
 * The contributors disclaim any representation of warranty: use this
 * code at your own risk.
 * Direct questions, comments etc to cavern@evl.uic.edu
 ******************************************************************/

#ifndef _CAVERNPLUS_CAVERNPLUS_MCAST_CLASS
#define _CAVERNPLUS_CAVERNPLUS_MCAST_CLASS

#include "CAVERNnet_socketbase_c.hxx"

#ifdef __sgi 
extern int h_errno;
extern int errno;
#endif

class CAVERNnet_mcast_c : public CAVERNnet_socketbase_c {

public:


        static const int OK/* = 1*/;

        static const int FAILED/* = 0*/;

        static const int maxTTL;

        CAVERNnet_mcast_c();

#ifdef WIN32
        void close()
                {::closesocket (sockfd);}
#else
        void close()
                {::close (sockfd);}
#endif

        int init(char *mcastGroup, int port, int mttl = CAVERNnet_mcast_c::maxTTL);

        int send(char *, int);

        int receive(char *, int);

        void printInfo();

        void makeNonBlocking();

        unsigned long getReceiveIP();

        void getReceiveIP(char *clientIP);

        /* Get the IP address of the mcast group. This shouldn't
         * be anything you'd forget since you needed a number in the 1st
         * place to start, but it's provided here for completeness.
         */



        unsigned long getSelfIP();
        void getSelfIP(char *ip);
        unsigned long getSendIP();
        void getSendIP(char *ip);
        unsigned short getSelfPort();
        unsigned short getSendPort();
        unsigned short getReceivePort();

        void enableInstrumentation();

        void disableInstrumentation();

private:

        int enableInstr;
        int sockfd;
        struct sockaddr_in receiveAddress, sendAddress;
        struct ip_mreq mreq;
        char ttl;

};
#endif

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