#include <OSPFNeighborState.h>

Inheritance diagram for OSPF::NeighborState:

Public Member Functions
virtual	~NeighborState ()
virtual void	ProcessEvent (Neighbor *neighbor, Neighbor::NeighborEventType event)=0
virtual Neighbor::NeighborStateType	GetState (void) const =0
Protected Member Functions
void	ChangeState (Neighbor neighbor, NeighborState newState, NeighborState *currentState)

Detailed Description

Definition at line 25 of file OSPFNeighborState.h.

Constructor & Destructor Documentation

virtual OSPF::NeighborState::~NeighborState ( ) [inline, virtual]

Definition at line 30 of file OSPFNeighborState.h.

{}

Member Function Documentation

void OSPF::NeighborState::ChangeState	(	OSPF::Neighbor *	neighbor,
		OSPF::NeighborState *	newState,
		OSPF::NeighborState *	currentState
	)			`[protected]`

Definition at line 23 of file OSPFNeighborState.cc.

Referenced by OSPF::NeighborStateTwoWay::ProcessEvent(), OSPF::NeighborStateLoading::ProcessEvent(), OSPF::NeighborStateInit::ProcessEvent(), OSPF::NeighborStateFull::ProcessEvent(), OSPF::NeighborStateExchangeStart::ProcessEvent(), OSPF::NeighborStateExchange::ProcessEvent(), OSPF::NeighborStateDown::ProcessEvent(), and OSPF::NeighborStateAttempt::ProcessEvent().

{

    OSPF::Neighbor::NeighborStateType   oldState            = currentState->GetState();
    OSPF::Neighbor::NeighborStateType   nextState           = newState->GetState();
    bool                                rebuildRoutingTable = false;

    neighbor->ChangeState(newState, currentState);

    if ((oldState == OSPF::Neighbor::FullState) || (nextState == OSPF::Neighbor::FullState)) {
        OSPF::RouterID   routerID  = neighbor->GetInterface()->GetArea()->GetRouter()->GetRouterID();
        OSPF::RouterLSA* routerLSA = neighbor->GetInterface()->GetArea()->FindRouterLSA(routerID);

        if (routerLSA != NULL) {
            long sequenceNumber = routerLSA->getHeader().getLsSequenceNumber();
            if (sequenceNumber == MAX_SEQUENCE_NUMBER) {
                routerLSA->getHeader().setLsAge(MAX_AGE);
                neighbor->GetInterface()->GetArea()->FloodLSA(routerLSA);
                routerLSA->IncrementInstallTime();
            } else {
                OSPF::RouterLSA* newLSA = neighbor->GetInterface()->GetArea()->OriginateRouterLSA();

                newLSA->getHeader().setLsSequenceNumber(sequenceNumber + 1);
                newLSA->getHeader().setLsChecksum(0);    // TODO: calculate correct LS checksum
                rebuildRoutingTable |= routerLSA->Update(newLSA);
                delete newLSA;

                neighbor->GetInterface()->GetArea()->FloodLSA(routerLSA);
            }
        }

        if (neighbor->GetInterface()->GetState() == OSPF::Interface::DesignatedRouterState) {
            OSPF::NetworkLSA* networkLSA = neighbor->GetInterface()->GetArea()->FindNetworkLSA(ULongFromIPv4Address(neighbor->GetInterface()->GetAddressRange().address));

            if (networkLSA != NULL) {
                long sequenceNumber = networkLSA->getHeader().getLsSequenceNumber();
                if (sequenceNumber == MAX_SEQUENCE_NUMBER) {
                    networkLSA->getHeader().setLsAge(MAX_AGE);
                    neighbor->GetInterface()->GetArea()->FloodLSA(networkLSA);
                    networkLSA->IncrementInstallTime();
                } else {
                    OSPF::NetworkLSA* newLSA = neighbor->GetInterface()->GetArea()->OriginateNetworkLSA(neighbor->GetInterface());

                    if (newLSA != NULL) {
                        newLSA->getHeader().setLsSequenceNumber(sequenceNumber + 1);
                        newLSA->getHeader().setLsChecksum(0);    // TODO: calculate correct LS checksum
                        rebuildRoutingTable |= networkLSA->Update(newLSA);
                        delete newLSA;
                    } else {    // no neighbors on the network -> old NetworkLSA must be flushed
                        networkLSA->getHeader().setLsAge(MAX_AGE);
                        networkLSA->IncrementInstallTime();
                    }

                    neighbor->GetInterface()->GetArea()->FloodLSA(networkLSA);
                }
            }
        }
    }

    if (rebuildRoutingTable) {
        neighbor->GetInterface()->GetArea()->GetRouter()->RebuildRoutingTable();
    }
}

virtual Neighbor::NeighborStateType OSPF::NeighborState::GetState ( void ) const [pure virtual]

Implemented in OSPF::NeighborStateAttempt, OSPF::NeighborStateDown, OSPF::NeighborStateExchange, OSPF::NeighborStateExchangeStart, OSPF::NeighborStateFull, OSPF::NeighborStateInit, OSPF::NeighborStateLoading, and OSPF::NeighborStateTwoWay.

Referenced by ChangeState(), and OSPF::Neighbor::GetState().

virtual void OSPF::NeighborState::ProcessEvent	(	Neighbor *	neighbor,
		Neighbor::NeighborEventType	event
	)			`[pure virtual]`

Implemented in OSPF::NeighborStateAttempt, OSPF::NeighborStateDown, OSPF::NeighborStateExchange, OSPF::NeighborStateExchangeStart, OSPF::NeighborStateFull, OSPF::NeighborStateInit, OSPF::NeighborStateLoading, and OSPF::NeighborStateTwoWay.

Referenced by OSPF::Neighbor::ProcessEvent().

The documentation for this class was generated from the following files:

OSPF::NeighborState Class Reference

Public Member Functions

Protected Member Functions

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation