AnsaOSPFInterfaceStateWaiting.cc

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#include "AnsaOSPFInterfaceStateWaiting.h"
#include "AnsaOSPFInterfaceStateDown.h"
#include "AnsaOSPFInterfaceStateLoopback.h"
#include "AnsaOSPFArea.h"
#include "AnsaOSPFRouter.h"
#include "AnsaMessageHandler.h"

void AnsaOSPF::InterfaceStateWaiting::ProcessEvent(AnsaOSPF::Interface* intf, AnsaOSPF::Interface::InterfaceEventType event)
{
    if ((event == AnsaOSPF::Interface::BackupSeen) ||
        (event == AnsaOSPF::Interface::WaitTimer))
    {
        CalculateDesignatedRouter(intf);
    }
    if (event == AnsaOSPF::Interface::InterfaceDown) {
        intf->SetIsGoingDown(true);
        intf->Reset();
        ChangeState(intf, new AnsaOSPF::InterfaceStateDown, this);
        intf->SetIsGoingDown(false);
    }
    if (event == AnsaOSPF::Interface::LoopIndication) {
        intf->Reset();
        ChangeState(intf, new AnsaOSPF::InterfaceStateLoopback, this);
    }
    if (event == AnsaOSPF::Interface::HelloTimer) {
        if (intf->GetType() == AnsaOSPF::Interface::Broadcast) {
            intf->SendHelloPacket(AnsaOSPF::AllSPFRouters);
        } else {    // AnsaOSPF::Interface::NBMA
            unsigned long neighborCount = intf->GetNeighborCount();
            int           ttl           = (intf->GetType() == AnsaOSPF::Interface::Virtual) ? VIRTUAL_LINK_TTL : 1;
            for (unsigned long i = 0; i < neighborCount; i++) {
                AnsaOSPF::Neighbor* neighbor = intf->GetNeighbor(i);
                if (neighbor->GetPriority() > 0) {
                    intf->SendHelloPacket(neighbor->GetAddress(), ttl);
                }
            }
        }
        intf->GetArea()->GetRouter()->GetMessageHandler()->StartTimer(intf->GetHelloTimer(), intf->GetHelloInterval());
    }
    if (event == AnsaOSPF::Interface::AcknowledgementTimer) {
        intf->SendDelayedAcknowledgements();
    }
}