private void RequestChangeView()
{
if (!context.State.HasFlag(ConsensusState.ViewChanging))
{
context.State |= ConsensusState.ViewChanging;
context.ExpectedView[context.MyIndex]++;
}
else
{
// 判断本地的ViewNumber是否掉队了
if (IsMyExpectedViewNumberOutdated())
{
Log($"my expected view number is outdated: height={context.BlockIndex} view={context.ViewNumber} nv={context.ExpectedView[context.MyIndex]} state={context.State}");
// 同步本地的ViewNumber
context.ExpectedView[context.MyIndex]++;
}
}
Log($"request change view: height={context.BlockIndex} view={context.ViewNumber} nv={context.ExpectedView[context.MyIndex]} state={context.State}");
SetNextTimer(context.ExpectedView[context.MyIndex]);
localNode.Tell(new LocalNode.SendDirectly {
Inventory = context.MakeChangeView()
});
CheckExpectedView(context.ExpectedView[context.MyIndex]);
}
private void CheckExpectedView(byte viewNumber)
{
if (context.ViewNumber == viewNumber)
{
return;
}
if (context.ChangeViewPayloads.Count(p => p != null && p.GetDeserializedMessage <ChangeView>().NewViewNumber == viewNumber) >= context.M())
{
ChangeView message = context.ChangeViewPayloads[context.MyIndex]?.GetDeserializedMessage <ChangeView>();
if (message is null || message.NewViewNumber < viewNumber)
{
localNode.Tell(new LocalNode.SendDirectly {
Inventory = context.MakeChangeView(viewNumber)
});
}
InitializeConsensus(viewNumber);
}
}
private void RequestChangeView()
{
context.State |= ConsensusState.ViewChanging;
context.ExpectedView[context.MyIndex]++;
Log($"request change view: height={context.BlockIndex} view={context.ViewNumber} nv={context.ExpectedView[context.MyIndex]} state={context.State}");
ChangeTimer(TimeSpan.FromSeconds(Blockchain.SecondsPerBlock << (context.ExpectedView[context.MyIndex] + 1)));
localNode.Tell(new LocalNode.SendDirectly {
Inventory = context.MakeChangeView()
});
CheckExpectedView(context.ExpectedView[context.MyIndex]);
}
private void CheckExpectedView(byte viewNumber)
{
if (context.ViewNumber >= viewNumber)
{
return;
}
// if there are `M` change view payloads with NewViewNumber greater than viewNumber, then, it is safe to move
if (context.ChangeViewPayloads.Count(p => p != null && p.GetDeserializedMessage <ChangeView>().NewViewNumber >= viewNumber) >= context.M())
{
if (!context.WatchOnly())
{
ChangeView message = context.ChangeViewPayloads[context.MyIndex]?.GetDeserializedMessage <ChangeView>();
// Communicate the network about my agreement to move to `viewNumber`
// if my last change view payload, `message`, has NewViewNumber lower than current view to change
if (message is null || message.NewViewNumber < viewNumber)
{
localNode.Tell(new LocalNode.SendDirectly {
Inventory = context.MakeChangeView()
});
}
}
InitializeConsensus(viewNumber);
}
}