pana_mcast_transport.h

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/* Open Diameter: Open-source software for the Diameter and               */
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#ifndef __PANA_MCAST_TRANSPORT_H__
#define __PANA_MCAST_TRANSPORT_H__

#include "ace/SOCK_Dgram_Mcast.h"
#include "pana_io.h"

class PANA_EXPORT PANA_McastTransport : public PANA_IO
{
    public:
        PANA_McastTransport() { }
        virtual ~PANA_McastTransport() { }
    
        virtual ACE_INT32 open(std::string &iface,
                               ACE_INET_Addr &listenAddr) {
            m_Iface = iface;
            m_McastAddr.set(listenAddr);
            return m_Mcast.join(listenAddr, 1, iface.data());
        }
        virtual ACE_INT32 recv(void *buf,
                               size_t n,
                               ACE_UINT32 &srcPort,
                               PANA_DeviceIdContainer &srcDevices) {            
           ACE_INET_Addr srcAddr;
           ACE_Time_Value tm(1, 0);
           ACE_INT32 pkt_len = m_Mcast.recv((char*)buf, n,
                                            srcAddr, 0, &tm);           
           if (pkt_len > 0) {

               srcPort = srcAddr.get_port_number();

               PANA_DeviceId *ip;
               ACE_NEW_RETURN(ip, PANA_DeviceId(PANA_DeviceId::IPV4_ADDRESS), (-1));

               ACE_UINT32 ipAddr = srcAddr.get_ip_address();
               const_cast<std::string&>(ip->id()).assign((char*)&ipAddr, 
                                                         sizeof(ACE_UINT32));
               srcDevices.push_back(ip);
           }
           return (pkt_len);
        }
        virtual ACE_INT32 send(void *buf,
                               size_t n,
                               ACE_UINT32 destPort,
                               PANA_DeviceIdContainer &destDevices) {
           return m_Mcast.send(buf, n);
        }
        virtual ACE_INT32 get_local_addr(PANA_DeviceIdContainer &localDevices) {
           return (-1); // un-supported by this platform
        }
        virtual void close() {
           m_Mcast.leave(m_McastAddr, m_Iface.data());
        }

    private:
        ACE_SOCK_Dgram_Mcast m_Mcast;
        ACE_INET_Addr m_McastAddr;
        std::string m_Iface;
};

#endif /* __PANA_MCAST_TRANSPORT_H__ */

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