public override void HandleMessage(int fromId, Msg msg)
{
if (Stage == 0)
{
ReceiveShareStage(msg);
if (SharesReceived == EvalGate.InputCount)
{
StartGateEvaluation();
}
}
else if (Stage == 1)
{
Debug.Assert(msg.Type == MsgType.SubProtocolCompleted);
var completedMsg = (SubProtocolCompletedMsg)msg;
CollectGateEvaluation(completedMsg);
SendShareStage();
}
else if (Stage == 2)
{
// we loopback any shares that go to me in a different quorum.
Debug.Assert(msg is SubProtocolCompletedMsg);
SubProtocolCompletedMsg completedMsg = (SubProtocolCompletedMsg)msg;
foreach (var loopback in OutputLoopbacksNeeded)
{
ulong counterpartEvalId = ProtocolIdGenerator.GateEvalIdentifier(loopback.Value.Gate.TopologicalRank);
T loopbackVal = (T)completedMsg.Result[loopback.Key];
NetSimulator.Loopback(Me.Id, counterpartEvalId, new LoopbackMsg <T>(loopbackVal, loopback.Value.Port));
}
IsCompleted = true;
}
}
public override void Start()
{
List <Protocol> evalProtocols = new List <Protocol>();
// we want to start protocols for all of the gates I'm involved with
for (int i = 0; i < GateList.Count; i++)
{
Debug.Assert(GateList[i] is ComputationGate);
var evalQuorum = GateQuorumMapping[GateList[i]];
if (evalQuorum == MyQuorum)
{
ulong evalProtocolId = ProtocolIdGenerator.GateEvalIdentifier(i);
evalProtocols.Add(new MultiQuorumGateEvaluation <T>(Me, (ComputationGate)GateList[i], GateQuorumMapping, Circuit, ProtocolFactory, CircuitInputs, Prime, evalProtocolId));
}
}
if (evalProtocols.Count > 0)
{
ExecuteSubProtocols(evalProtocols);
}
else
{
IsCompleted = true;
}
}
private void SendShareStage()
{
List <Protocol> reshareProtocols = new List <Protocol>();
OutputLoopbacksNeeded = new Dictionary <ulong, InputGateAddress>();
for (int i = 0; i < EvalGate.OutputCount; i++)
{
// figure out where this share is going to
InputGateAddress counterpartGateAddr;
if (Circuit.OutputConnectionCounterparties.TryGetValue(EvalGate.GetLocalOutputAddress(i), out counterpartGateAddr))
{
var counterpartGate = counterpartGateAddr.Gate;
var counterpartQuorum = GateQuorumMapping[counterpartGate];
bool needReshare;
bool needLoopback;
if (counterpartQuorum == EvalQuorum)
{
needLoopback = true;
needReshare = false;
}
else if (counterpartQuorum.HasMember(Me.Id))
{
needLoopback = true;
needReshare = true;
}
else
{
needLoopback = false;
needReshare = true;
}
if (needLoopback && !needReshare)
{
// loop a message back to the other protocol
ulong counterpartEvalId = ProtocolIdGenerator.GateEvalIdentifier(counterpartGate.TopologicalRank);
NetSimulator.Loopback(Me.Id, counterpartEvalId, new LoopbackMsg <T>(OutputShares[i], counterpartGateAddr.Port));
}
if (needReshare)
{
Protocol reshareProtocol = ProtocolFactory.GetResharingProtocol(Me, EvalQuorum, counterpartQuorum, OutputShares[i],
counterpartGate.TopologicalRank, counterpartGateAddr.Port);
reshareProtocols.Add(reshareProtocol);
if (needLoopback)
{
OutputLoopbacksNeeded[reshareProtocol.ProtocolId] = counterpartGateAddr;
}
}
}
else
{
// this was a circuit output
Result[EvalGate.GetLocalOutputAddress(i)] = OutputShares[i];
}
}
Stage = 2;
if (reshareProtocols.Count > 0)
{
ExecuteSubProtocols(reshareProtocols);
}
else
{
IsCompleted = true;
}
}