void FullyConnectedMesh2::SendFCMGuidRequest(SystemAddress addr)
{
#ifdef DEBUG_FCM2
printf("SendFCMGuidRequest to %s. guid=%s.\n", addr.ToString(), rakPeerInterface->GetGuidFromSystemAddress(addr).ToString());
#endif
RakNet::BitStream bsOut;
bsOut.Write((MessageID)ID_FCM2_REQUEST_FCMGUID);
bsOut.Write(GetElapsedRuntime());
rakPeerInterface->Send(&bsOut,HIGH_PRIORITY,RELIABLE_ORDERED,0,addr,false);
}
void FullyConnectedMesh2::SendFCMGuidRequest(RakNetGUID rakNetGuid)
{
if (rakNetGuid==rakPeerInterface->GetGuidFromSystemAddress(UNASSIGNED_SYSTEM_ADDRESS))
return;
RakNet::BitStream bsOut;
bsOut.Write((MessageID)ID_FCM2_REQUEST_FCMGUID);
if (ourFCMGuid==0)
{
bsOut.Write(false);
bsOut.Write(GetElapsedRuntime());
}
else
{
bsOut.Write(true);
bsOut.Write(totalConnectionCount);
bsOut.Write(ourFCMGuid);
}
rakPeerInterface->Send(&bsOut,HIGH_PRIORITY,RELIABLE_ORDERED,0,rakNetGuid,false);
}
void FullyConnectedMesh2::OnRequestFCMGuid(Packet *packet)
{
RakNet::BitStream bsIn(packet->data,packet->length,false);
bsIn.IgnoreBytes(sizeof(MessageID));
// Only the host says who is host
if (ourFCMGuid!=0 && IsHostSystem()==false)
{
return;
}
RakNetTimeUS senderElapsedRuntime;
if (ourFCMGuid==0)
{
bsIn.Read(senderElapsedRuntime);
RakNetTimeUS ourElapsedRuntime = GetElapsedRuntime();
// TODO: BUG: Multiple simultaneous connections can create a subnet. Don't respond to this until all systems answer.
// Even if both systems disagree on who is host by time, the problem is avoid because of the random number for the low 4 bytes of FCM2Guid
if (ourElapsedRuntime>senderElapsedRuntime)
{
// We are probably host
// 2 is for 2 total connections
// Their total connection count is one higher, so their FCM2Guid has a lower priority than ours
SendFCMGuidResponse(packet->systemAddress, totalConnectionCount+1, 2);
}
else
{
// They are probably host
SendFCMGuidResponse(packet->systemAddress, totalConnectionCount, 2);
}
}
else
{
// totalConnectionCount is set to the value of 2 passed to SendFCMGuidResponse when our own guid is first assigned
// We are host here
RakAssert(totalConnectionCount!=0);
SendFCMGuidResponse(packet->systemAddress, totalConnectionCount+1, totalConnectionCount+1);
}
}
void FullyConnectedMesh2::OnRequestFCMGuid(Packet *packet)
{
RakNet::BitStream bsIn(packet->data,packet->length,false);
bsIn.IgnoreBytes(sizeof(MessageID));
bool hasRemoteFCMGuid;
bsIn.Read(hasRemoteFCMGuid);
RakNetTimeUS senderElapsedRuntime=0;
unsigned int remoteTotalConnectionCount=0;
FCM2Guid theirFCMGuid=0;
if (hasRemoteFCMGuid)
{
bsIn.Read(remoteTotalConnectionCount);
bsIn.Read(theirFCMGuid);
}
else
{
bsIn.Read(senderElapsedRuntime);
}
AddParticipantInternal(packet->guid,theirFCMGuid);
if (ourFCMGuid==0)
{
if (hasRemoteFCMGuid==false)
{
// Nobody has a fcmGuid
RakNetTimeUS ourElapsedRuntime = GetElapsedRuntime();
if (ourElapsedRuntime>senderElapsedRuntime)
{
// We are probably host
SendConnectionCountResponse(packet->systemAddress, 2);
}
else
{
// They are probably host
SendConnectionCountResponse(packet->systemAddress, 1);
}
}
else
{
// They have a fcmGuid, we do not
IncrementTotalConnectionCount(remoteTotalConnectionCount+1);
AssignOurFCMGuid();
DataStructures::DefaultIndexType idx;
for (idx=0; idx < participantList.Size(); idx++)
SendOurFCMGuid(rakPeerInterface->GetSystemAddressFromGuid(participantList[idx].rakNetGuid));
}
}
else
{
if (hasRemoteFCMGuid==false)
{
// We have a fcmGuid they do not
SendConnectionCountResponse(packet->systemAddress, totalConnectionCount+1);
}
else
{
// We both have fcmGuids
IncrementTotalConnectionCount(remoteTotalConnectionCount);
SendOurFCMGuid(packet->systemAddress);
}
}
CalculateAndPushHost();
}