public JoinQuery(JoinQuery jq)
{
this.Source = jq.Source;
this.LastHop = jq.LastHop;
this.HopCount = jq.HopCount;
this.Sequence = jq.Sequence;
}
public void ReceiveJoinQuery(JoinQuery joinQuery)
{
foreach (var jq in messageCache)
{
if (jq.Source == joinQuery.Source && jq.Sequence >= joinQuery.Sequence)
{
Console.WriteLine(this.Name + " received duplicate JQ from " + joinQuery.LastHop);
return;
}
}
Console.WriteLine(this.Name + " received JQ from " + joinQuery.LastHop);
messageCache.Add(joinQuery);
UpdateTable(joinQuery);
if (Receiver)
{
SendJoinReply(joinQuery);
}
joinQuery.HopCount++;
Task.Delay(sendDelay).ContinueWith(t => ContinueJoinQuery(joinQuery));
}
public void ContinueJoinQuery(JoinQuery receivedJoinQuery)
{
var jq = new JoinQuery(receivedJoinQuery)
{
LastHop = this.Name
};
foreach (var node in this.ConnectedNodes)
{
node.ReceiveJoinQuery(jq);
}
}
public void SendJoinQuery()
{
Console.WriteLine("---------");
this.Sequence++;
Console.WriteLine(this.Name + " transmitting JQ");
foreach (var node in this.ConnectedNodes)
{
var jq = new JoinQuery(this, this.Sequence);
node.ReceiveJoinQuery(jq);
this.messageCache.Add(jq);
}
}
public void SendJoinReply(JoinQuery joinQuery)
{
var reply = new JoinReply()
{
Source = joinQuery.Source,
NextHop = joinQuery.LastHop
};
Console.WriteLine(this.Name + " transmitting JR");
foreach (Node node in ConnectedNodes)
{
Task.Delay(sendDelay).ContinueWith(t => node.ReceiveJoinReply(reply));
}
}
public void UpdateTable(JoinQuery joinQuery)
{
var previousRoutingEntry = routingTable.Find(x => x.Destination == joinQuery.Source);
if (previousRoutingEntry != null)
{
routingTable.Remove(previousRoutingEntry);
}
var entry = new RoutingEntry()
{
Destination = joinQuery.Source,
NextNode = joinQuery.LastHop
};
routingTable.Add(entry);
}