/// <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); }