/// <summary>
/// Handler for Mac sdu confirmations
/// </summary>
private void MacDataConfirmHandler(
IMacDataSap sender,
Byte msduHandle,
MacEnum mStatus)
{
MessageContext.Context context = _messageContext.GetContext(msduHandle);
if (context == null)
return;
Status status = Status.Success;
if (mStatus != MacEnum.Success)
{
status = Status.Error;
if (!context.useExtAddr && mStatus != MacEnum.Congested)
{
// if network is congested, avoid route repairs causing additional traffic
Trace.Print("Link failure for 0x" + HexConverter.ConvertUintToHex(context.nextHopShort, 4));
_routingTable.HandleLinkFailure(context.nextHopShort);
}
}
if (context.dataHandler != null)
context.dataHandler.Invoke(_net, context.dataSduHandle, status);
_messageContext.ReleaseContext(context);
}
/// <summary>
/// Handler for Mac sdu frames
/// </summary>
private void MacDataIndHandler(
IMacDataSap sender,
MacAddress srcAddr,
UInt16 srcPanId,
MacAddress dstAddr,
UInt16 dstPanId,
Frame sdu,
Byte linkQuality,
Byte DSN,
UInt32 timeStamp,
SecurityOptions securityOptions)
{
bool ok = true;
ok &= (srcPanId == _panId && dstPanId == _panId);
switch (dstAddr.Mode)
{
case MacAddressingMode.ShortAddress:
ok &= (dstAddr.ShortAddress == _addrShort) || (dstAddr.ShortAddress == cBroadcastShortAddr);
break;
case MacAddressingMode.ExtendedAddress:
ok &= (dstAddr.ExtendedAddress == _addrExt);
break;
default:
ok &= false;
break;
}
if (srcAddr.Mode == MacAddressingMode.NoAddress)
ok = false;
if (sdu == null || sdu.LengthDataUsed == 0)
ok = false;
if (ok)
{
Messages6LoWPAN.Dispatch dispatch;
ok = Messages6LoWPAN.GetType(sdu, out dispatch);
if (ok)
{
if (dispatch == Messages6LoWPAN.Dispatch.NonLowPan)
{
Message.Type type;
ok = Message.GetType(sdu, out type);
if (ok)
{
switch (type)
{
case Message.Type.AddressRequest:
HandleAddressRequest(srcAddr, dstAddr, ref sdu);
break;
case Message.Type.AddressReply:
HandleAddressReply(srcAddr, dstAddr, ref sdu);
break;
case Message.Type.RouteRequest:
case Message.Type.RouteReply:
HandleRoutingMessage(srcAddr, dstAddr, ref sdu, linkQuality);
break;
case Message.Type.RouteError:
HandleRouteError(srcAddr, dstAddr, ref sdu);
break;
case Message.Type.NeighborhoodDiscovery:
HandleNeighborhoodDiscovery(srcAddr, dstAddr, ref sdu, linkQuality);
break;
case Message.Type.Data:
if (srcAddr.Mode == MacAddressingMode.ShortAddress && dstAddr.Mode == MacAddressingMode.ShortAddress)
{
HandleData(srcAddr.ShortAddress, dstAddr.ShortAddress, ref sdu);
}
break;
case Message.Type.DiscoveryReply:
{
if (srcAddr.Mode == MacAddressingMode.ShortAddress && _isAddrServer)
{
Message.DiscoveryReply drep = new Message.DiscoveryReply();
if (drep.ReadFromFrame(sdu))
{
_addrServer.HandleDiscoveryReply(srcAddr.ShortAddress);
}
}
}
break;
}
}
}
else
{
if (srcAddr.Mode == MacAddressingMode.ShortAddress && dstAddr.Mode == MacAddressingMode.ShortAddress)
{
HandleData(srcAddr.ShortAddress, dstAddr.ShortAddress, ref sdu);
}
}
}
}
Frame.Release(ref sdu);
}
