private void SendBeacon()
{
if (_host == null)
{
return;
}
Message.NeighborhoodDiscovery msg = new Message.NeighborhoodDiscovery();
lock (_lock)
{
int count = _neighbours.Count;
msg.Neighbours = new Message.NeighborhoodDiscovery.Neighbour[count];
for (int i = 0; i < count; i++)
{
Entry e = (Entry)_neighbours[i];
msg.Neighbours[i].Address = e.addrShort;
msg.Neighbours[i].Lqi = e.lqiRx;
}
}
Frame frame = Frame.GetFrame(_macHeader, msg.Length() + _macTailer);
if (frame == null)
{
return;
}
if (msg.WriteToFrame(frame))
{
_host.SendBeacon(ref frame);
}
Frame.Release(ref frame);
}
private void SendBeacon()
{
if (_host == null)
return;
Message.NeighborhoodDiscovery msg = new Message.NeighborhoodDiscovery();
lock (_lock)
{
int count = _neighbours.Count;
msg.Neighbours = new Message.NeighborhoodDiscovery.Neighbour[count];
for (int i = 0; i < count; i++)
{
Entry e = (Entry)_neighbours[i];
msg.Neighbours[i].Address = e.addrShort;
msg.Neighbours[i].Lqi = e.lqiRx;
}
}
Frame frame = Frame.GetFrame(_macHeader, msg.Length() + _macTailer);
if (frame == null)
return;
if (msg.WriteToFrame(frame))
_host.SendBeacon(ref frame);
Frame.Release(ref frame);
}
/// <summary>
/// process received beacon
/// </summary>
/// <param name="senderAddr">address of sender of beacon</param>
/// <param name="sdu">encoded beacon</param>
/// <param name="lqi">LQI of beacon message</param>
public void ReceiveBeacon(UInt16 senderAddr, ref Frame sdu, byte lqi)
{
if (sdu == null)
{
return;
}
Message.NeighborhoodDiscovery msg = new Message.NeighborhoodDiscovery();
if (msg.ReadFromFrame(sdu))
{
lock (_lock)
{
// check if we know this node
Entry e = null;
int count = _neighbours.Count;
for (int i = 0; i < count; i++)
{
Entry _e = _neighbours[i] as Entry;
if (_e != null && _e.addrShort == senderAddr)
{
e = _e;
break;
}
}
// create/update our entry
if (e == null)
{
e = new Entry();
e.addrShort = senderAddr;
if (_neighbours.Count < cMaxSize)
{
_neighbours.Add(e);
}
}
e.lqiRx = lqi;
e.lqiTx = 0;
e.lqiTxValid = false;
e.missCounter = 0;
if (_neighbours.Count > cMaxSize)
{
// remove worst entry
byte lqiWorst = 0xff;
int iWorst = 0;
count = _neighbours.Count;
for (int i = 0; i < count; i++)
{
Entry eWorst = _neighbours[i] as Entry;
if (eWorst != null && eWorst.lqiRx < lqiWorst)
{
lqiWorst = eWorst.lqiRx;
iWorst = i;
}
}
_neighbours.RemoveAt(iWorst);
}
// check if this node has information on us
if (msg.Neighbours != null)
{
int length = msg.Neighbours.Length;
for (int i = 0; i < length; i++)
{
if (msg.Neighbours[i].Address == _localAddr)
{
e.lqiTxValid = true;
e.lqiTx = msg.Neighbours[i].Lqi;
break;
}
}
}
}
}
Frame.Release(ref sdu);
}
/// <summary>
/// process received beacon
/// </summary>
/// <param name="senderAddr">address of sender of beacon</param>
/// <param name="sdu">encoded beacon</param>
/// <param name="lqi">LQI of beacon message</param>
public void ReceiveBeacon(UInt16 senderAddr, ref Frame sdu, byte lqi)
{
if (sdu == null)
return;
Message.NeighborhoodDiscovery msg = new Message.NeighborhoodDiscovery();
if (msg.ReadFromFrame(sdu))
{
lock (_lock)
{
// check if we know this node
Entry e = null;
int count = _neighbours.Count;
for (int i = 0; i < count; i++)
{
Entry _e = _neighbours[i] as Entry;
if (_e != null && _e.addrShort == senderAddr)
{
e = _e;
break;
}
}
// create/update our entry
if (e == null)
{
e = new Entry();
e.addrShort = senderAddr;
if (_neighbours.Count < cMaxSize)
_neighbours.Add(e);
}
e.lqiRx = lqi;
e.lqiTx = 0;
e.lqiTxValid = false;
e.missCounter = 0;
if (_neighbours.Count > cMaxSize)
{
// remove worst entry
byte lqiWorst = 0xff;
int iWorst = 0;
count = _neighbours.Count;
for (int i = 0; i < count; i++)
{
Entry eWorst = _neighbours[i] as Entry;
if (eWorst != null && eWorst.lqiRx < lqiWorst)
{
lqiWorst = eWorst.lqiRx;
iWorst = i;
}
}
_neighbours.RemoveAt(iWorst);
}
// check if this node has information on us
if (msg.Neighbours != null)
{
int length = msg.Neighbours.Length;
for (int i = 0; i < length; i++)
{
if (msg.Neighbours[i].Address == _localAddr)
{
e.lqiTxValid = true;
e.lqiTx = msg.Neighbours[i].Lqi;
break;
}
}
}
}
}
Frame.Release(ref sdu);
}
