private void RecivePacket(Sensor Reciver, Packet packt)
{
// string cluster = packt.Branch.Cluster.MembersString;
packt.Path += ">" + Reciver.ID;
// if Reciver is an agent, then reciev the packet and remove the Reciver from the cluster
// reFindBranches if the cluster still have more members.
if (new LoopMechanizimAvoidance(packt).isLoop)
{
// drop the packet:
packt.IsLooped = true;
counter.DropPacket(packt, Reciver, PacketDropedReasons.Loop);
}
else
{
// not loop:
packt.ReTransmissionTry = 0;
if (Operations.FindInAlist(Reciver, packt.Branch.Cluster.Members) != null)
{
// Reciver is an agent:
counter.ComputeOverhead(packt, EnergyConsumption.Recive, null, Reciver);
counter.DisplayRefreshAtReceivingPacket(Reciver);
// when the packet arrived to Reciver and holds more clustreds. this case reclustring process should be performed.
if (packt.Branch.Cluster.Members.Count > 0)
{
packt.Branch.Cluster.Members.Remove(Reciver);
List <Branch> Branches = FindBranches.GetBranches(packt.Branch.Cluster.Members, Reciver.CenterLocation, PublicParamerters.MainWindow.Canvas_SensingFeild, Settings.Default.MaxClusteringThreshold);
if (Branches.Count > 0)
{
MergedPathsMessages merged = new MergedPathsMessages(Reciver, Branches, packt);
}
}
HandOffToTheSinkOrRecovry(Reciver, packt);
}
else
{
double dis1 = Operations.DistanceBetweenTwoPoints(Reciver.CenterLocation, packt.Branch.EndPoint);
double dis2 = Operations.DistanceBetweenTwoPoints(Reciver.CenterLocation, packt.Branch.Cluster.Centeriod);
double disThre = PublicParamerters.CommunicationRangeRadius;
if ((dis1 < disThre) && (packt.Branch.Cluster.Members.Count > 1))
{
double clusteringThreshould = 0;
if (dis2 <= disThre)
{
clusteringThreshould = Settings.Default.MinClusteringThreshold;
}
else
{
clusteringThreshould = Settings.Default.MaxClusteringThreshold;
}
counter.ComputeOverhead(packt, EnergyConsumption.Recive, null, Reciver);
List <Branch> Branches = FindBranches.GetBranches(packt.Branch.Cluster.Members, Reciver.CenterLocation, PublicParamerters.MainWindow.Canvas_SensingFeild, clusteringThreshould);
if (Branches.Count > 1)
{
MergedPathsMessages merged = new MergedPathsMessages(Reciver, Branches, packt);
}
else
{
counter.ComputeOverhead(packt, EnergyConsumption.Recive, null, Reciver);
packt.Branch = Branches[0]; // the branch is not changed. only the end coordinat of the branch is changed.
SendPacket(Reciver, packt);
}
}
else
{
counter.ComputeOverhead(packt, EnergyConsumption.Recive, null, Reciver);
if (packt.Hops <= packt.TimeToLive)
{
SendPacket(Reciver, packt);
}
else
{
counter.DropPacket(packt, Reciver, PacketDropedReasons.TimeToLive);
// since we did not count PID during the generation, thuse we should add here:
PublicParamerters.NumberofGeneratedPackets += 1;
packt.PID = PublicParamerters.NumberofGeneratedPackets;
counter.IncreasePacketsCounter(Reciver, PacketType.Data); //
}
}
}
}
}
/// <summary>
/// if source is an agent, we just send the packet directly to the sink and no need for clustring.
/// </summary>
/// <param name="source"></param>
/// <param name="packt"></param>
private void PreparDataTransmission(Sensor source, Packet packt)
{
// when the old agent is hightier node...
if (packt.isRecovery)
{
// durig recovery, the agent should not be a source.
// source should add a record.
List <Sensor> NewAents = new List <Sensor>(); // new agent for the recovery.
foreach (SinksAgentsRow inpacket in packt.SinksAgentsList)
{
if (inpacket.AgentNode.ID != source.ID)
{
bool isFound = Operations.FindInAlistbool(inpacket.AgentNode, NewAents);
if (!isFound)
{
NewAents.Add(inpacket.AgentNode);
}
}
}
if (source.RecoveryRow == null)
{
Console.WriteLine("ResonseSinkPositionMessage. New Recovery Record is created at prevAgent ID" + source.ID + " Packet PID " + packt.PID + " Path: " + packt.Path);
// keep recored for the recovery of upcoming packets. no need for request and respanse a gain.
source.RecoveryRow = new RecoveryRow()
{
ObtiantedTime = PublicParamerters.SimulationTime,
PrevAgent = source,
RecoveryAgentList = packt.SinksAgentsList,
ObtainPacketsRetry = 0
};
}
else
{
Console.WriteLine("ResonseSinkPositionMessage: PrevAgent ID " + source.ID + " has recovery record Packet PID " + packt.PID + " Path:" + packt.Path);
source.RecoveryRow.ObtiantedTime = PublicParamerters.SimulationTime;
source.RecoveryRow.PrevAgent = source;
source.RecoveryRow.RecoveryAgentList = packt.SinksAgentsList;
source.RecoveryRow.ObtainPacketsRetry += 1;
}
// the new agent is found:
if (NewAents.Count > 0)
{
List <Branch> Branches = FindBranches.GetBranches(NewAents, source.CenterLocation, PublicParamerters.MainWindow.Canvas_SensingFeild, Settings.Default.MaxClusteringThreshold);
new MergedPathsMessages(source, Branches, packt);
}
else
{
if (packt.SinkIDsNeedsRecovery != null)
{
new RecoveryMessage(source, packt); // obtain
}
else
{
Console.WriteLine("ResonseSinkPositionMessage: ******************************* PrevAgent ID " + source.ID + " has recovery record Packet PID " + packt.PID + " Path:" + packt.Path);
MessageBox.Show("xxx&&&&&&&&&&&ResonseSinkPositionMessage");
}
}
}
else
{
// call the merged path:
List <Sensor> NotMySinks = new List <Sensor>(); // source node (Reciver) is not an agent for these sinks.
List <Sensor> MySinks = new List <Sensor>(); // the source node (Reciver) is an agent for these sinks
foreach (SinksAgentsRow row in packt.SinksAgentsList)
{
if (row.AgentNode.ID == source.ID) // if the agent itslef has data. that is to say no need for clusetrign.
{
// no need to join merged path and clustring process.
MySinks.Add(row.AgentNode);
}
else
{
// the sinks are not mine. SOURCE NODE is not an agent for these sinks.
bool isFound = Operations.FindInAlistbool(row.AgentNode, NotMySinks);
if (!isFound)
{
NotMySinks.Add(row.AgentNode);
}
}
}
// not my sinks:
if (NotMySinks.Count > 0)
{
List <Branch> Branches = FindBranches.GetBranches(NotMySinks, source.CenterLocation, PublicParamerters.MainWindow.Canvas_SensingFeild, Settings.Default.MaxClusteringThreshold);
new MergedPathsMessages(source, Branches, packt);
}
// my sinks:
if (MySinks.Count > 0)
{
// the source is an agent in this case.
new MergedPathsMessages(source, packt);
}
}
// in recovery probelm
}
/// <summary>
/// preAgent send an obtian packet to ask for the new agent of the sink.
/// </summary>
/// <param name="preAgent"></param>
/// <param name="SinksIDsRequiredRecovery"></param>
public RecoveryMessage(Sensor preAgent, Packet packet)
{
// preAgent: if it has no record, then we obtian the sink position first.
// if the preAgent did not sent an obtian message to the hightier node
if (preAgent.RecoveryRow == null)
{
// obtian the recovery. obtian the sink location.
Console.WriteLine("RecoveryMessage. >>>>Trying to recover the packet. Source ID=" + packet.Source.ID + " PID=" + packet.PID + " Path " + packet.Path);
new ObtainSinkFreshPositionMessage(preAgent, packet.SinkIDsNeedsRecovery);
}
else
{
// it has record. no need to resend an obtian: but you should wait.
if (!preAgent.RecoveryRow.IsExpired)
{
// not expired
List <Sensor> NewAents = new List <Sensor>(); // new agent for the recovery.
foreach (SinksAgentsRow newAgentRow in preAgent.RecoveryRow.RecoveryAgentList)
{
if (newAgentRow.AgentNode.ID != preAgent.ID)
{
bool isFound = Operations.FindInAlistbool(newAgentRow.AgentNode, NewAents);
if (!isFound)
{
packet.Destination = newAgentRow.AgentNode;
NewAents.Add(newAgentRow.AgentNode);
}
}
}
// if we found the new agent.
if (NewAents.Count > 0)
{
Console.WriteLine("RecoveryMessage. Source ID=" + packet.Source.ID + " PID=" + packet.PID + " Path " + packet.Path);
List <Branch> Branches = FindBranches.GetBranches(NewAents, preAgent.CenterLocation, PublicParamerters.MainWindow.Canvas_SensingFeild, Settings.Default.MaxClusteringThreshold);
packet.SinksAgentsList = preAgent.RecoveryRow.RecoveryAgentList;
new MergedPathsMessages(preAgent, Branches, packet);
}
else
{
if (preAgent.RecoveryRow.ObtainPacketsRetry >= 3)
{
// in case no new agent is found.
Console.WriteLine("RecoveryMessage. No agent is found during the recovery.Source ID = " + packet.Source.ID + " PID = " + packet.PID + " Path " + packet.Path);
NetworkOverheadCounter counter = new NetworkOverheadCounter();
// counter.DropPacket(packet, preAgent, PacketDropedReasons.RecoveryNoNewAgentFound);
counter.SaveToQueue(preAgent, packet);
}
else
{
Console.WriteLine("RecoveryMessage. Recovery period is expired. Old Agent is sending new obtain packet!" + " Path " + packet.Path);
new ObtainSinkFreshPositionMessage(preAgent, packet.SinkIDsNeedsRecovery); // obtain
}
}
}
else
{
// resent the obtian packet. 2 times.
if (preAgent.RecoveryRow.ObtainPacketsRetry <= 3)
{
Console.WriteLine("RecoveryMessage. Recovery period is expired. Old Agent is sending new obtain packet!" + " Path " + packet.Path);
new ObtainSinkFreshPositionMessage(preAgent, packet.SinkIDsNeedsRecovery); // obtain
}
else
{
Console.WriteLine("RecoveryMessage. Recovery period is expired. we tryied to re-sent the obtian packet for three times and faild. The packet will be droped." + " Path " + packet.Path);
// drop the packet:
NetworkOverheadCounter counter = new NetworkOverheadCounter();
counter.DropPacket(packet, preAgent, PacketDropedReasons.RecoveryPeriodExpired);
preAgent.RecoveryRow = null;
}
}
}
}