Go to the documentation of this file.
00001 //
00002 // This program is free software: you can redistribute it and/or modify
00003 // it under the terms of the GNU Lesser General Public License as published by
00004 // the Free Software Foundation, either version 3 of the License, or
00005 // (at your option) any later version.
00006 // 
00007 // This program is distributed in the hope that it will be useful,
00008 // but WITHOUT ANY WARRANTY; without even the implied warranty of
00009 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00010 // GNU Lesser General Public License for more details.
00011 // 
00012 // You should have received a copy of the GNU Lesser General Public License
00013 // along with this program.  If not, see http://www.gnu.org/licenses/.
00014 // 
00015 
00016 #include "ansaOspfArea6.h"
00017 #include "ansaOspfRouter6.h"
00018 
00019 #include "ansaOspfInterfaceStateDown6.h"
00020 #include "ansaOspfInterfaceStateLoopback6.h"
00021 #include "ansaOspfInterfaceStateNotDesignatedRouter6.h"
00022 #include "ansaOspfInterfaceStatePointToPoint6.h"
00023 #include "ansaOspfInterfaceStateWaiting6.h"
00024 
00025 void AnsaOspf6::InterfaceStateDown::ProcessEvent(AnsaOspf6::Interface* intf, AnsaOspf6::Interface::InterfaceEventType event){
00026 
00027    if (event == AnsaOspf6::Interface::InterfaceUp){
00028 
00029       AnsaOspf6::MessageHandler* messageHandler = intf->GetArea()->GetRouter()->GetMessageHandler();
00030 
00031       // add some deviation to avoid startup collisions
00032       messageHandler->StartTimer(intf->GetHelloTimer(), truncnormal(0.1, 0.01));
00033       /* TODO
00034       messageHandler->StartTimer(intf->GetAcknowledgementTimer(), intf->GetAcknowledgementDelay());
00035       */
00036 
00037       switch (intf->GetType()){
00038          case AnsaOspf6::Interface::PointToPoint:
00039          case AnsaOspf6::Interface::PointToMultiPoint:
00040          case AnsaOspf6::Interface::Virtual:
00041             ChangeState(intf, new AnsaOspf6::InterfaceStatePointToPoint, this);
00042             break;
00043 
00044          case AnsaOspf6::Interface::NBMA:
00045             if (intf->GetRouterPriority() == 0){
00046                ChangeState(intf, new AnsaOspf6::InterfaceStateNotDesignatedRouter, this);
00047             }else{
00048                ChangeState(intf, new AnsaOspf6::InterfaceStateWaiting, this);
00049                messageHandler->StartTimer(intf->GetWaitTimer(), intf->GetRouterDeadInterval());
00050 
00051                long neighborCount = intf->GetNeighborCount();
00052                for (long i = 0; i < neighborCount; i++) {
00053                   AnsaOspf6::Neighbor* neighbor = intf->GetNeighbor(i);
00054                   if (neighbor->GetPriority() > 0) {
00055                      neighbor->ProcessEvent(AnsaOspf6::Neighbor::Start);
00056                   }
00057                }
00058             }
00059             break;
00060 
00061          case AnsaOspf6::Interface::Broadcast:
00062             if (intf->GetRouterPriority() == 0){
00063                ChangeState(intf, new AnsaOspf6::InterfaceStateNotDesignatedRouter, this);
00064             }else{
00065                ChangeState(intf, new AnsaOspf6::InterfaceStateWaiting, this);
00066                messageHandler->StartTimer(intf->GetWaitTimer(), intf->GetRouterDeadInterval());
00067             }
00068             break;
00069 
00070          default:
00071             break;
00072       }
00073    }
00074 
00075    if (event == AnsaOspf6::Interface::LoopIndication) {
00076       intf->Reset();
00077       ChangeState(intf, new AnsaOspf6::InterfaceStateLoopback, this);
00078    }
00079 }
00080