/// <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);
}
private void UpdateTarget()
{
string s = "Current nodes: ";
target = 0;
UInt16 targetNode = 1;
lock (_statusLock)
{
for (int i = 0; i < _status.Length; i++)
{
if (i > 0)
{
s += ", ";
}
s += "0x" + HexConverter.ConvertUintToHex(_status[i].addr, 4);
if (_status[i].addr == targetNode)
{
target = _status[i].addr;
}
}
}
_monitor.Print(s);
if (target == 0)
{
_monitor.Print("Not sending any data");
}
else
{
_monitor.Print("Sending data to 0x" + HexConverter.ConvertUintToHex(target, 4));
}
}
public override string ToString()
{
return("RouteError [HopsLeft: " + HopsLeft +
", TargetAddr: 0x" + HexConverter.ConvertUintToHex(TargetAddr, 4) +
", OriginatorAddr: 0x" + HexConverter.ConvertUintToHex(OriginatorAddr, 4) +
", UnreachableAddr: 0x" + HexConverter.ConvertUintToHex(UnreachableAddr, 4) + "]");
}
public override string ToString()
{
return("AddressReply [HopsLeft: " + HopsLeft +
", BrokerAddr: 0x" + HexConverter.ConvertUintToHex(BrokerAddr, 4) +
", DeviceAddr: 0x" + HexConverter.ConvertUint64ToHex(DeviceAddr, 16) +
", ShortAddr: 0x" + HexConverter.ConvertUintToHex(ShortAddr, 4) +
", DiscoveryInterval: " + DiscoveryInterval + "]");
}
/// <summary>
/// Returns textual representation
/// </summary>
/// <returns>textual repressentation</returns>
public override string ToString()
{
string description = "CoordinatorRealignment [";
description += "panId: " + HexConverter.ConvertUintToHex(panId, 4);
description += ", coordinatorShortAddr: " + HexConverter.ConvertUintToHex(coordinatorShortAddr, 4);
description += ", channel: " + channel.ToString();
description += ", shortAddr: " + HexConverter.ConvertUintToHex(shortAddr, 4);
description += "]";
return(description);
}
void phy_DataIndicationDump(IPhyDataSap sender, Frame frame, byte linkQuality)
{
string s = "recv: ";
for (int i = 0; i < frame.LengthDataUsed; i++)
{
byte b = frame.ReadByte(i);
s += HexConverter.ConvertUintToHex(b, 2) + " ";
}
Debug.Print(s);
Frame.Release(ref frame);
}
public void Status(NodeStatus[] status)
{
Print("Status update");
if (status != null)
{
for (int i = 0; i < status.Length; i++)
{
Print("0x" + HexConverter.ConvertUintToHex(status[i].addr, 4) + ":");
if (status[i].txBps > 0)
{
Print(" TX: " + status[i].txBps.ToString() + " bytes/s");
}
if (status[i].neighbors == null || status[i].neighbors.Length == 0)
{
Print(" no neighbors");
}
else
{
for (int j = 0; j < status[i].neighbors.Length; j++)
{
Print(" neighbor 0x" + HexConverter.ConvertUintToHex(status[i].neighbors[j].addr, 4) +
": LQI " + status[i].neighbors[j].lqi);
}
}
if (status[i].traffic == null || status[i].traffic.Length == 0)
{
Print(" no traffic");
}
else
{
for (int j = 0; j < status[i].traffic.Length; j++)
{
Print(" traffic from 0x" + HexConverter.ConvertUintToHex(status[i].traffic[j].addr, 4) +
": " + status[i].traffic[j].rxBps + " bytes/sec");
}
}
}
}
}
public override string ToString()
{
string res;
if (IsRequest)
{
res = "RouteRequest";
}
else
{
res = "RouteReply";
}
return(res + " [HopsLeft: " + HopsLeft +
", HopCount: " + HopCount +
", MinLQI: " + MinLQI +
", SeqNo: " + SeqNo +
", TargetAddr: 0x" + HexConverter.ConvertUintToHex(TargetAddr, 4) +
", OriginatorAddr: 0x" + HexConverter.ConvertUintToHex(OriginatorAddr, 4) + "]");
}
public override string ToString()
{
string res = "NeighborhoodDiscovery [";
if (Neighbours != null)
{
int length = Neighbours.Length;
for (int i = 0; i < length; i++)
{
if (i > 0)
{
res += ", ";
}
res += "[Address: 0x" + HexConverter.ConvertUintToHex(Neighbours[i].Address, 4) +
", LQI: " + Neighbours[i].Lqi + "]";
}
}
res += "]";
return(res);
}
/// <summary>
/// allocate a short address
/// </summary>
/// <param name="extAddr">the extended address of the target node</param>
/// <param name="shortAddr">the allocated short address</param>
/// <returns>true on success</returns>
public virtual bool AllocateAddress(UInt64 extAddr, out UInt16 shortAddr)
{
lock (_addresses)
{
int bucket = (int)(extAddr % cBuckets);
// lookup old addr
ArrayList list = _addresses.data[bucket];
Mapping mapping;
int count = list.Count;
for (int i = 0; i < count; i++)
{
mapping = (Mapping)list[i];
if (mapping.extAddr == extAddr)
{
shortAddr = mapping.shortAddr;
return(true);
}
}
// allocate new addr
if (_addresses.nextAddr > cLastAddr)
{
shortAddr = 0;
return(false);
}
shortAddr = _addresses.nextAddr++;
// store addr
mapping = new Mapping();
mapping.extAddr = extAddr;
mapping.shortAddr = shortAddr;
list.Add(mapping);
Trace.Print("Allocating short address 0x" + HexConverter.ConvertUintToHex(shortAddr, 4) +
" for device 0x" + HexConverter.ConvertUint64ToHex(extAddr, 16));
return(true);
}
}
private void ScanHandlerJoinRequest(
object sender,
Status status,
ScanResult[] networks)
{
_logicalChannel = 0;
_channelPage = 0;
if (status == Status.Success)
{
// find properties of target network
UInt16[] neighborAddr;
status = FindNetwork(out neighborAddr);
if (status == Status.Success)
{
Trace.Print("Joining network on Pan Id=0x" + HexConverter.ConvertUintToHex(_panId, 4) +
", logicalChannel=" + _logicalChannel + ", channelPage=" + _channelPage);
_net.Routing.Start(_panId, false, _logicalChannel, _channelPage, neighborAddr, StartHandlerJoinRequest);
return;
}
}
StartHandlerJoinRequest(null, status, 0);
}
/// <summary>
/// Updates timeouts in routing table. Deletes entries with expired deletion timer.
/// After changing some timer externally, set _timerEvent
/// </summary>
private void TimerThread()
{
int nextTimeout = int.MaxValue;
while (true)
{
DateTime start = DateTime.Now;
if (nextTimeout == cInfiniteTimeout)
{
_timerEvent.WaitOne();
}
else
{
_timerEvent.WaitOne((int)nextTimeout, false);
}
if (_timerThreadExit)
{
break;
}
TimeSpan tsElapsed = DateTime.Now - start;
int timeElapsed = tsElapsed.Milliseconds + 1000 * (tsElapsed.Seconds + 60 * tsElapsed.Minutes);
// max wait time is in minutes, less than an hour
lock (_lock)
{
// each entry gets checked periodically after cRouteTimeout:
// if neither "routeInUse" nor "broadcastActive" is set, entry is deleted
// else: flags are reset and timer gets restarted
// if "routeInUse" is true, a route request is performed to refresh the route
// else: the next hop is set to invalid
nextTimeout = cInfiniteTimeout;
int i = 0;
while (i < _table.Count)
{
Entry entry = _table[i] as Entry;
if (entry.timeOutSet > 0)
{
entry.timeOutLeft = entry.timeOutSet;
entry.timeOutSet = 0; // timer is running;
}
else
{
if (entry.timeOutLeft <= timeElapsed)
{ // timeout
bool routeInUse = entry.routeInUse;
bool broadcastActive = entry.broadcastActive;
entry.routeInUse = false;
entry.broadcastActive = false;
if (routeInUse && !entry.routePending)
{
Trace.Print("Refreshing route to 0x" + HexConverter.ConvertUintToHex(entry.targetAddr, 4));
entry.routePending = true;
entry.requestRetryCnt = cRouteRequestRetryCnt + 1;
}
if (entry.routePending)
{
if (entry.requestRetryCnt > 0)
{
// retry route request
Trace.Print("Sending route request for 0x" + HexConverter.ConvertUintToHex(entry.targetAddr, 4) + " for timeout");
entry.requestRetryCnt--;
entry.timeOutLeft = cRouteRequestWaitTime;
_routing.RouteRequest(entry.targetAddr);
}
else
{
entry.routePending = false; // give up
ClearPendingMessages(entry);
}
}
else
{
if (routeInUse || broadcastActive)
{
// keep entry
Trace.Print("Invalidating route to 0x" + HexConverter.ConvertUintToHex(entry.targetAddr, 4) + " for timeout");
entry.nextHopAddr = cInvalidAddr;
entry.timeOutLeft = cRouteTimeout;
}
else
{
// delete entry
Trace.Print("Removing route for 0x" + HexConverter.ConvertUintToHex(entry.targetAddr, 4) + " for timeout");
RemoveEntry(i);
continue; // keep i
}
}
}
else
{
// update timer
entry.timeOutLeft -= timeElapsed;
}
}
// update timeout
if (entry.timeOutLeft < nextTimeout)
{
nextTimeout = entry.timeOutLeft;
}
i++;
}
}
}
}
public override string ToString()
{
switch (status)
{
case Status.AssociationSuccessful:
return("AssociationResponse [status: AssociationSuccessful, shortAddr: " + HexConverter.ConvertUintToHex(shortAddr, 4) + "]");
case Status.PanAtCapacity:
return("AssociationResponse [status: PanAtCapacity]");
case Status.PanAccessDenied:
return("AssociationResponse [status: PanAccessDenied]");
default:
return("AssociationResponse [unknown status]");
}
}
public override string ToString()
{
return("MeshHeader [HopsLeft: " + HopsLeft +
", OriginatorAddr: 0x" + HexConverter.ConvertUintToHex(originatorAddress, 4) +
", FinalAddress: 0x" + HexConverter.ConvertUintToHex(finalAddress, 4) + "]");
}
public void TestCommon()
{
// GetFrameHeaders
{
int mtu, head, tail;
phy.GetMtuSize(out mtu, out head, out tail);
Assert(mtu == 127);
Assert(head == 2);
Assert(tail == 0);
}
// Capabilities
{
bool res;
phy.IsCapabilitySupported(Capabilities.AddressFilter, out res);
Assert(res == true);
phy.IsCapabilitySupported(Capabilities.AutoAck, out res);
Assert(res == true);
phy.IsCapabilitySupported(Capabilities.AutoFcs, out res);
Assert(res == true);
phy.IsCapabilitySupported(Capabilities.PowerOff, out res);
Assert(res == true);
}
phy.SetPower(true);
// GetDeviceAddress
{
UInt64 mac;
phy.GetDeviceAddress(out mac);
String s = String.Empty;
for (int i = 0; i < 8; i++)
{
if (i > 0)
{
s += ":";
}
s += HexConverter.ConvertUintToHex((UInt32)((mac >> i * 8) & 0xFF), 2);
}
Debug.Print(s);
}
// GetRequest
{
Status status;
PibValue value;
// constants
phy.GetRequest(PibAttribute.phyChannelsSupported, out status, out value);
Assert(status == Status.Success);
int[] res = value.IntArray;
Assert(res != null);
Assert(res.Length == 1);
Assert((res[0] & 0xF8000000) == 0); // page 0
for (int i = 0; i <= 27; i++)
{
bool val = (res[0] & (1 << i)) != 0;
bool expected = (i >= 11 && i <= 26);
Assert(val == expected);
}
phy.GetRequest(PibAttribute.phyCCAMode, out status, out value);
Assert(status == Status.Success);
Assert(value.Int == 3);
phy.GetRequest(PibAttribute.phyCurrentPage, out status, out value);
Assert(status == Status.Success);
Assert(value.Int == 0);
phy.GetRequest(PibAttribute.phyMaxFrameDuration, out status, out value);
Assert(status == Status.Success);
Assert(value.Int == 1064);
phy.GetRequest(PibAttribute.phySHRDuration, out status, out value);
Assert(status == Status.Success);
Assert(value.Int == 40);
phy.GetRequest(PibAttribute.phySymbolsPerOctet, out status, out value);
Assert(status == Status.Success);
Assert(value.Float == 8);
// defaults
phy.GetRequest(PibAttribute.phyCurrentChannel, out status, out value);
Assert(status == Status.Success);
Assert(value.Int == 11);
phy.GetRequest(PibAttribute.phyTransmitPower, out status, out value);
Assert(status == Status.Success);
Assert(value.Int == -1);
}
// SetRequest
{
// constants
Status status;
PibValue value = new PibValue();
int[] res = new int[1];
res[0] = 256;
value.IntArray = res;
phy.SetRequest(PibAttribute.phyChannelsSupported, value, out status);
Assert(status == Status.ReadOnly);
value.Int = 0;
phy.SetRequest(PibAttribute.phyCCAMode, value, out status);
Assert(status == Status.ReadOnly);
phy.SetRequest(PibAttribute.phyMaxFrameDuration, value, out status);
Assert(status == Status.ReadOnly);
phy.SetRequest(PibAttribute.phySHRDuration, value, out status);
Assert(status == Status.ReadOnly);
phy.SetRequest(PibAttribute.phySymbolsPerOctet, value, out status);
Assert(status == Status.ReadOnly);
// page
phy.SetRequest(PibAttribute.phyCurrentPage, value, out status);
Assert(status == Status.Success);
value.Int = 1;
phy.SetRequest(PibAttribute.phyCurrentPage, value, out status);
Assert(status == Status.InvalidParam);
// channel
for (int i = 0; i < 27; i++)
{
value.Int = i;
phy.SetRequest(PibAttribute.phyCurrentChannel, value, out status);
if (i >= 11 && i <= 26)
{
Assert(status == Status.Success);
phy.GetRequest(PibAttribute.phyCurrentChannel, out status, out value);
Assert(status == Status.Success);
Assert(value.Int == i);
}
else
{
Assert(status == Status.InvalidParam);
}
}
// power
value.Int = -100;
phy.SetRequest(PibAttribute.phyTransmitPower, value, out status);
Assert(status == Status.InvalidParam);
value.Int = -32;
phy.SetRequest(PibAttribute.phyTransmitPower, value, out status);
Assert(status == Status.Success);
phy.GetRequest(PibAttribute.phyTransmitPower, out status, out value);
Assert(status == Status.Success);
value.Int = 1;
phy.SetRequest(PibAttribute.phyTransmitPower, value, out status);
Assert(status == Status.Success);
phy.GetRequest(PibAttribute.phyTransmitPower, out status, out value);
Assert(status == Status.Success);
Assert(value.Int == 0); // max CC tx power
value.Int = 64;
phy.SetRequest(PibAttribute.phyTransmitPower, value, out status);
Assert(status == Status.InvalidParam);
}
phy.SetPower(false);
}
public void Run(AutoResetEvent stopEvent)
{
UInt64 extAddr;
_net.GetDeviceAddress(out extAddr);
_monitor.Print("Device address is 0x" + HexConverter.ConvertUint64ToHex(extAddr, 16));
_monitor.Print("Frame structure: mtu=" + _mtu +
", head=" + _head +
", tail=" + _tail);
UInt16 panId = 0x6366;
AutoResetEvent callback = new AutoResetEvent(false);
bool started = false;
UInt16 shortAddr = 0;
Byte logicalChannel = 0;
Byte channelPage = 0;
#if MICROFRAMEWORK
_coordinator = false;
#else
_coordinator = true;
#endif
_monitor.Print("attempting to start network layer");
while (!started)
{
if (_coordinator)
{
_monitor.Print("StartRequest for PanId=0x" + HexConverter.ConvertUint64ToHex(panId, 4));
_net.StartRequest(panId, delegate(
object sender,
Status status,
UInt16 _shortAddr,
Byte _logicalChannel,
Byte _channelPage)
{
_monitor.Print("StartConfirm: " + status.ToString());
if (status == Status.Success)
{
shortAddr = _shortAddr;
logicalChannel = _logicalChannel;
channelPage = _channelPage;
started = true;
}
callback.Set();
});
}
else
{
_monitor.Print("JoinRequest for PanId=0x" + HexConverter.ConvertUint64ToHex(panId, 4));
_net.JoinRequest(panId, delegate(
object sender,
Status status,
UInt16 _shortAddr,
Byte _logicalChannel,
Byte _channelPage)
{
_monitor.Print("JoinConfirm: " + status.ToString());
if (status == Status.Success)
{
shortAddr = _shortAddr;
logicalChannel = _logicalChannel;
channelPage = _channelPage;
started = true;
}
callback.Set();
});
}
callback.WaitOne();
}
_monitor.Print("network is running, logicalChannel=" + logicalChannel +
", channelPage=" + channelPage +
", shortAddr=0x" + HexConverter.ConvertUintToHex(shortAddr, 4));
_testMode = true;
StartSink();
if (_coordinator)
{
StartSource();
}
if (stopEvent != null)
{
stopEvent.WaitOne();
}
else
{
for (; ;)
{
Thread.Sleep(60 * 1000);
}
}
StopSource();
StopSink();
}
/// <summary>
/// Returns a string representation of the object
/// </summary>
/// <returns>a string represetnation</returns>
public override string ToString()
{
string description = fcs.ToString();
description += ", seqNo: " + seqNo.ToString();
AddressingMode dstMode = fcs.DstAddrMode;
AddressingMode srcMode = fcs.SrcAddrMode;
switch (dstMode)
{
case AddressingMode.None:
description += ", no dst";
break;
case AddressingMode.Reserved:
description += ", bad dst";
break;
case AddressingMode.Short:
description += ", dstPanId: " + dstPanId.ToString();
description += ", dstAddrShort: " + HexConverter.ConvertUintToHex(dstAddrShort, 4);
break;
case AddressingMode.Extended:
description += ", dstPanId: " + dstPanId.ToString();
description += ", dstAddrExt: " + HexConverter.ConvertUint64ToHex(dstAddrExt, 16);
break;
default:
description += ", bad dst";
break;
}
switch (srcMode)
{
case AddressingMode.None:
description += ", no src";
break;
case AddressingMode.Reserved:
description += ", bad src";
break;
case AddressingMode.Short:
if (!fcs.PanIdCompression)
{
description += ", srcPanId: " + srcPanId.ToString();
}
description += ", srcAddrShort: " + HexConverter.ConvertUintToHex(srcAddrShort, 4);
break;
case AddressingMode.Extended:
if (!fcs.PanIdCompression)
{
description += ", srcPanId: " + srcPanId.ToString();
}
description += ", srcAddrExt: " + HexConverter.ConvertUint64ToHex(srcAddrExt, 16);
break;
default:
description += ", bad src";
break;
}
// FIXME: secHeader
return(description);
}
private void DataIndicationHandler(
object sender,
UInt16 source,
UInt16 targetShortAddr,
Frame frame)
{
lock (_msgReport)
{
Message msg = (Message)frame.ReadByte(0);
switch (msg)
{
case Message.Data:
{
if (_testMode)
{
_monitor.Print("received frame from 0x" + HexConverter.ConvertUintToHex(source, 4) +
", sduHandle=" + frame.ReadByte(1) +
", len=" + frame.LengthDataUsed + " bytes");
}
for (int i = 0; i < _msgReport.nodeCount; i++)
{
if (_msgReport.nodes[i].addr == source)
{
_msgReport.nodes[i].rxBps += (UInt32)frame.LengthDataUsed;
return;
}
}
if (_msgReport.nodeCount < _msgReport.nodes.Length)
{
_msgReport.nodes[_msgReport.nodeCount].addr = source;
_msgReport.nodes[_msgReport.nodeCount].rxBps = (UInt32)frame.LengthDataUsed;
_msgReport.nodeCount++;
}
break;
}
case Message.Report:
{
MsgReport rep = new MsgReport();
if (rep.ReadFromFrame(frame))
{
if (_testMode)
{
_monitor.Print("Report from node 0x" + HexConverter.ConvertUintToHex(source, 4) + ":");
for (int i = 0; i < rep.nodeCount; i++)
{
_monitor.Print(" " + rep.nodes[i].rxBps + " bytes per second from 0x" + HexConverter.ConvertUintToHex(rep.nodes[i].addr, 4));
}
}
if (_coordinator)
{
StatusHandleReport(source, rep);
}
}
break;
}
case Message.Neighbors:
{
MsgNeighbors neigh = new MsgNeighbors();
if (neigh.ReadFromFrame(frame))
{
if (_testMode)
{
_monitor.Print("Neighbors from node 0x" + HexConverter.ConvertUintToHex(source, 4) + ":");
for (int i = 0; i < neigh.neighborCount; i++)
{
_monitor.Print(" 0x" + HexConverter.ConvertUintToHex(neigh.neighbors[i].shortAdr, 4) +
": " + neigh.neighbors[i].lqi);
}
}
if (_coordinator)
{
StatusHandleNeighbors(source, neigh);
}
}
break;
}
}
}
Frame.Release(ref frame);
}
private void ScanHandlerStartRequest(
object sender,
Status status,
ScanResult[] networks)
{
_logicalChannel = 0;
_channelPage = 0;
if (status == Status.Success)
{
// first check if there are nodes of target network already -> use same channel
UInt16[] neighborAddr;
status = FindNetwork(out neighborAddr);
if (status == Status.NoNeighbor)
{
// perform ED scan
bool found = true;
byte energy = 0xff; // max
AutoResetEvent callbackEvent = new AutoResetEvent(false);
Trace.Print("Performing ED scan");
int length = _scanChannels.Length;
for (int i = 0; i < length; i++)
{
UInt32 channels = (UInt32)_scanChannels[i];
UInt32 page = (channels >> 27);
channels &= 0x07FFFFFF; // remove page
// FIXME: how to select scanDuration?
byte scanDuration = 5;
_net.Mac.ScanRequest(ScanType.ED, channels, scanDuration, (byte)page, new SecurityOptions(), delegate(
IMacMgmtSap senderDlgt,
MacEnum statusDlgt,
ScanType scanTypeDlgt,
Byte channelPageDlgt,
UInt32 unscannedChannelDlgt,
byte[] energyDetectListDlgt,
PanDescriptor[] panDescriptorListDlgt)
{
if (statusDlgt == MacEnum.Success && energyDetectListDlgt != null)
{
int idx = 0;
for (int c = 0; c < 27; c++)
{
if ((channels & (1 << c)) > 0)
{ // channel 'c' was requested
if (((unscannedChannelDlgt & (1 << c)) == 0) && // channel was measured
(idx < energyDetectListDlgt.Length))
{ // result is avaiable
Trace.Print("channel " + c + ": energy level " + energyDetectListDlgt[idx]);
if (energyDetectListDlgt[idx] < energy)
{ // result is better
found = true;
energy = energyDetectListDlgt[idx];
_logicalChannel = (byte)c;
_channelPage = channelPageDlgt;
}
}
idx++;
}
}
}
callbackEvent.Set();
});
callbackEvent.WaitOne();
}
if (found)
{
status = Status.Success;
Trace.Print("Starting new network on channel " + _logicalChannel + ", page " + _channelPage);
}
else
{
status = Status.Error;
Trace.Print("ED scan failed");
}
}
if (status == Status.Success)
{
Trace.Print("Using Pan Id=0x" + HexConverter.ConvertUintToHex(_panId, 4) +
", logicalChannel=" + _logicalChannel + ", channelPage=" + _channelPage);
_net.Routing.Start(_panId, true, _logicalChannel, _channelPage, null, StartHandlerStartRequest);
return;
}
}
// scanning failed
StartHandlerStartRequest(null, status, 0);
}
/// <summary>
/// To send sdu from local node
/// </summary>
/// <param name="tgtAddrExt"></param>
/// <param name="sduHandle"></param>
/// <param name="sdu"></param>
/// <param name="handler"></param>
public void DataRequest(
UInt16 targetAddr,
ref Frame sdu,
Byte sduHandle,
DataConfirmHandler handler,
bool isControlMsg)
{
lock (_lock)
{
int i = FindTargetAddr(targetAddr);
Entry entry;
if (i == -1)
{
// create new entry
entry = AddEntry(targetAddr);
}
else
{
entry = _table[i] as Entry;
}
bool doRouteRequest = false;
if (entry.nextHopAddr == cInvalidAddr || entry.routeHasError)
{ // no route to targetAddr
// queue this message
if (entry.pendingMessages.Count == cMaxPendingMsg)
{ // delete oldest waiting msg
PendingMessage pmOld = (PendingMessage)entry.pendingMessages[0];
entry.pendingMessages.RemoveAt(0);
_routing.DataRequestTimeout(targetAddr, pmOld.sduHandle, pmOld.handler, pmOld.isControlMsg);
Frame.Release(ref pmOld.sdu);
}
PendingMessage pm = new PendingMessage();
pm.sdu = sdu;
sdu = null;
pm.sduHandle = sduHandle;
pm.handler = handler;
pm.isControlMsg = isControlMsg;
entry.pendingMessages.Add(pm);
doRouteRequest = true;
}
else
{
entry.routeInUse = true;
_routing.DataRequest(targetAddr, entry.nextHopAddr, ref sdu, sduHandle, handler, isControlMsg);
if (entry.routeHasError)
{
doRouteRequest = true;
entry.routeHasError = false;
}
}
if (doRouteRequest)
{
// initiate route request
if (!entry.routePending)
{
// we haven't asked for a route yet, start now
entry.routePending = true;
entry.requestRetryCnt = cRouteRequestRetryCnt;
entry.timeOutSet = cRouteRequestWaitTime;
_timerEvent.Set();
Trace.Print("Sending route request for 0x" + HexConverter.ConvertUintToHex(entry.targetAddr, 4) + " for data");
_routing.RouteRequest(targetAddr);
} // else: wait for ongoing request
}
}
}
public override string ToString()
{
return("AddressRequest [HopsLeft: " + HopsLeft +
", BrokerAddr: 0x" + HexConverter.ConvertUintToHex(BrokerAddr, 4) +
", DeviceAddr: 0x" + HexConverter.ConvertUint64ToHex(DeviceAddr, 16) + "]");
}