LayerIpLocal.cpp

#include "Headers.h"
#include "LayerIpLocal.h"

CLayerIpLocal::CLayerIpLocal(
    CSimHandler*    sim,
    CAddress        address,
    CRoute*         route
    ) : CLayer(sim)
{
    this->address = address;
    this->route = route;

    // Delegates
    this->delegateRecv = new Delegate2<CLayerIpLocal, void, __uint32, CPacketIp*>(this, &CLayerIpLocal::Recv);
    this->delegateRecvMcast = new Delegate2<CLayerIpLocal, void, __uint32, CPacketIp*>(this, &CLayerIpLocal::RecvMcast);
    this->delegateSend = new Delegate3<CLayerIpLocal, void, CAddress, __byte, CPacket*>(this, &CLayerIpLocal::Send);

    // Events
    this->eventRecv = new Event3<void, __uint32, CPacketIp*, CPacket*>();
    this->eventSend = new Event2<void, __uint32, CPacketIp*>();
    this->eventSendMcast = new Event1<void, CPacketIp*>();
}

CLayerIpLocal::~CLayerIpLocal()
{
    // Delegates
    delete this->delegateRecv;
    delete this->delegateRecvMcast;
    delete this->delegateSend;

    // Events
    delete this->eventRecv;
    delete this->eventSend;
    delete this->eventSendMcast;
}

void CLayerIpLocal::Recv(__uint32 entry, CPacketIp* packet)
{
    // Verify the packet destination is the current address
    if(NULL == packet) return;
    if(packet->Dst() != this->address) return;

#ifdef LOG_LAYER
    printf("\n\tT = %7.3lf IP_LOCAL RECV local=%u entry=%u bytes=%u src=%u dst=%u", this->sim->Time(), this->address, entry, packet->Size(), packet->Src(), packet->Dst());
#endif

    // Send the packet payload to the upper layers
    (*this->eventRecv)(entry, packet, packet->Payload());
}

void CLayerIpLocal::RecvMcast(__uint32 entry, CPacketIp* packet)
{
    // Verify the packet destination is a multicast address
    if(NULL == packet) return;
    if(!packet->Dst().IsMulticast()) return;

#ifdef LOG_LAYER
    printf("\n\tT = %7.3lf IP_LOCAL RECV_MCAST local=%u entry=%u bytes=%u src=%u dst=%u", this->sim->Time(), this->address, entry, packet->Size(), packet->Src(), packet->Dst());
#endif

    // Send the packet payload to the upper layers
    (*this->eventRecv)(entry, packet, packet->Payload());
}

void CLayerIpLocal::Send(CAddress dst, __byte ttl, CPacket *payload)
{
    // Create a new IP packet
    CPacketIp* packet = new CPacketIp(this->address, dst, ttl, payload);

#ifdef LOG_LAYER
    printf("\n\tT = %7.3lf IP_LOCAL SEND local=%u bytes=%u src=%u dst=%u", this->sim->Time(), this->address, packet->Size(), packet->Src(), packet->Dst());
#endif

    // If destination is multicast
    if(dst.IsMulticast())
    {
        // Send the packet to the lower multicast layer
        (*this->eventSendMcast)(packet);
    }
    // If destination is unicast
    else
    {
        // Calculate the link to send the packet
        __uint32 link = this->route->Forward(this->address, dst);

        // Send the packet to the lower layer
        (*this->eventSend)(link, packet);
    }
}