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00001 #include "AnsaOSPFInterfaceStateDesignatedRouter.h"
00002 #include "AnsaOSPFInterfaceStateDown.h"
00003 #include "AnsaOSPFInterfaceStateLoopback.h"
00004 #include "AnsaOSPFArea.h"
00005 #include "AnsaOSPFRouter.h"
00006 #include "AnsaMessageHandler.h"
00007 
00008 void AnsaOSPF::InterfaceStateDesignatedRouter::ProcessEvent(AnsaOSPF::Interface* intf, AnsaOSPF::Interface::InterfaceEventType event)
00009 {
00010     if (event == AnsaOSPF::Interface::NeighborChange) {
00011         CalculateDesignatedRouter(intf);
00012     }
00013     if (event == AnsaOSPF::Interface::InterfaceDown) {
00014         intf->SetIsGoingDown(true);
00015         intf->Reset();
00016         ChangeState(intf, new AnsaOSPF::InterfaceStateDown, this);
00017         intf->SetIsGoingDown(false);
00018     }
00019     if (event == AnsaOSPF::Interface::LoopIndication) {
00020         intf->Reset();
00021         ChangeState(intf, new AnsaOSPF::InterfaceStateLoopback, this);
00022     }
00023     if (event == AnsaOSPF::Interface::HelloTimer) {
00024         if (intf->GetType() == AnsaOSPF::Interface::Broadcast) {
00025             intf->SendHelloPacket(AnsaOSPF::AllSPFRouters);
00026         } else {    // AnsaOSPF::Interface::NBMA
00027             unsigned long neighborCount = intf->GetNeighborCount();
00028             int           ttl           = (intf->GetType() == AnsaOSPF::Interface::Virtual) ? VIRTUAL_LINK_TTL : 1;
00029             for (unsigned long i = 0; i < neighborCount; i++) {
00030                 intf->SendHelloPacket(intf->GetNeighbor(i)->GetAddress(), ttl);
00031             }
00032         }
00033         intf->GetArea()->GetRouter()->GetMessageHandler()->StartTimer(intf->GetHelloTimer(), intf->GetHelloInterval());
00034     }
00035     if (event == AnsaOSPF::Interface::AcknowledgementTimer) {
00036         intf->SendDelayedAcknowledgements();
00037     }
00038 }
00039