public Task RequestBlocksAsync(string peerId, Root peerHeadRoot, Slot finalizedSlot, Slot peerHeadSlot)
{
// NOTE: Currently just requests entire range, one at a time, to get small testnet working.
// Will need more sophistication in future, e.g. request interleaved blocks and stuff.
// Start with the block for the next slot after our finalized state
Slot startSlot = finalizedSlot + Slot.One;
ulong count = peerHeadSlot - finalizedSlot;
ulong step = 1;
BeaconBlocksByRange beaconBlocksByRange = new BeaconBlocksByRange(peerHeadRoot, startSlot, count, step);
byte[] peerUtf8 = Encoding.UTF8.GetBytes(peerId);
Span <byte> encoded = new byte[Ssz.Ssz.BeaconBlocksByRangeLength];
Ssz.Ssz.Encode(encoded, beaconBlocksByRange);
if (_logger.IsDebug())
{
LogDebug.RpcSend(_logger, RpcDirection.Request, nameof(MethodUtf8.BeaconBlocksByRange), peerId,
encoded.Length, null);
}
if (!_mothraLibp2p.SendRpcRequest(MethodUtf8.BeaconBlocksByRange, peerUtf8, encoded))
{
if (_logger.IsWarn())
{
Log.RpcRequestNotSentAsPeeeringNotStarted(_logger, nameof(MethodUtf8.BeaconBlocksByRange), null);
}
}
return(Task.CompletedTask);
}
public static void Encode(Span <byte> span, BeaconBlocksByRange container)
{
if (span.Length != BeaconBlocksByRangeLength)
{
ThrowTargetLength <BeaconBlocksByRange>(span.Length, BeaconBlocksByRangeLength);
}
int offset = 0;
Encode(span, container.HeadBlockRoot, ref offset);
Encode(span, container.StartSlot, ref offset);
Encode(span, container.Count, ref offset);
Encode(span, container.Step, ref offset);
}
private void OnRpcReceived(ReadOnlySpan <byte> methodUtf8, int requestResponseFlag, ReadOnlySpan <byte> peerUtf8,
ReadOnlySpan <byte> data)
{
Activity activity = new Activity("rpc-received");
activity.Start();
try
{
string peerId = Encoding.UTF8.GetString(peerUtf8);
RpcDirection rpcDirection = requestResponseFlag == 0 ? RpcDirection.Request : RpcDirection.Response;
// Even though the value '/eth2/beacon_chain/req/status/1/' is sent, when Mothra calls the received event it is 'HELLO'
// if (methodUtf8.SequenceEqual(MethodUtf8.Status)
// || methodUtf8.SequenceEqual(MethodUtf8.StatusMothraAlternative))
if (data.Length == Ssz.Ssz.PeeringStatusLength)
{
if (_logger.IsDebug())
{
LogDebug.RpcReceived(_logger, rpcDirection, requestResponseFlag,
Encoding.UTF8.GetString(methodUtf8),
peerId, data.Length, nameof(MethodUtf8.Status), null);
}
PeeringStatus peeringStatus = Ssz.Ssz.DecodePeeringStatus(data);
RpcMessage <PeeringStatus> statusRpcMessage =
new RpcMessage <PeeringStatus>(peerId, rpcDirection, peeringStatus);
_rpcPeeringStatusProcessor.Enqueue(statusRpcMessage);
}
//else if (methodUtf8.SequenceEqual(MethodUtf8.BeaconBlocksByRange))
else if (data.Length == Ssz.Ssz.BeaconBlocksByRangeLength ||
data.Length >= _minimumSignedBeaconBlockLength)
{
if (_logger.IsDebug())
{
LogDebug.RpcReceived(_logger, rpcDirection, requestResponseFlag,
Encoding.UTF8.GetString(methodUtf8),
peerId, data.Length, nameof(MethodUtf8.BeaconBlocksByRange), null);
}
//if (rpcDirection == RpcDirection.Request)
if (data.Length == Ssz.Ssz.BeaconBlocksByRangeLength)
{
BeaconBlocksByRange beaconBlocksByRange = Ssz.Ssz.DecodeBeaconBlocksByRange(data);
RpcMessage <BeaconBlocksByRange> rpcMessage =
new RpcMessage <BeaconBlocksByRange>(peerId, rpcDirection, beaconBlocksByRange);
_rpcBeaconBlocksByRangeProcessor.Enqueue(rpcMessage);
}
else
{
SignedBeaconBlock signedBeaconBlock = Ssz.Ssz.DecodeSignedBeaconBlock(data);
_signedBeaconBlockProcessor.Enqueue(signedBeaconBlock, peerId);
}
}
else
{
// TODO: handle other RPC
if (_logger.IsWarn())
{
Log.UnknownRpcReceived(_logger, rpcDirection, requestResponseFlag,
Encoding.UTF8.GetString(methodUtf8), peerId,
data.Length, null);
}
}
}
catch (Exception ex)
{
if (_logger.IsError())
{
Log.RpcReceivedError(_logger, Encoding.UTF8.GetString(methodUtf8), ex.Message, ex);
}
}
finally
{
activity.Stop();
}
}
public async Task BlocksByRangeRequestShouldCreateResponse()
{
// arrange
Root root6 = new Root(Enumerable.Repeat((byte)0x67, 32).ToArray());
Root root4 = new Root(Enumerable.Repeat((byte)0x45, 32).ToArray());
Root root2 = new Root(Enumerable.Repeat((byte)0x23, 32).ToArray());
Root requestRoot = root6;
SignedBeaconBlock block6 = new SignedBeaconBlock(new BeaconBlock(new Slot(6), root4, Root.Zero, BeaconBlockBody.Zero),
BlsSignature.Zero);
SignedBeaconBlock block4 = new SignedBeaconBlock(new BeaconBlock(new Slot(4), root2, Root.Zero, BeaconBlockBody.Zero),
BlsSignature.Zero);
SignedBeaconBlock block2 = new SignedBeaconBlock(new BeaconBlock(new Slot(2), Root.Zero, Root.Zero, BeaconBlockBody.Zero),
BlsSignature.Zero);
_mockForkChoice.GetAncestorAsync(Arg.Any <IStore>(), Arg.Any <Root>(), Arg.Any <Slot>()).Returns(Root.Zero);
_mockForkChoice.GetAncestorAsync(Arg.Any <IStore>(), Arg.Any <Root>(), new Slot(6)).Returns(root6);
_mockForkChoice.GetAncestorAsync(Arg.Any <IStore>(), Arg.Any <Root>(), new Slot(5)).Returns(root4);
_mockForkChoice.GetAncestorAsync(Arg.Any <IStore>(), Arg.Any <Root>(), new Slot(4)).Returns(root4);
_mockForkChoice.GetAncestorAsync(Arg.Any <IStore>(), Arg.Any <Root>(), new Slot(3)).Returns(root2);
_mockStore.GetSignedBlockAsync(root6).Returns(block6);
_mockStore.GetSignedBlockAsync(root4).Returns(block4);
_mockStore.GetSignedBlockAsync(root2).Returns(block2);
MothraPeeringWorker peeringWorker = new MothraPeeringWorker(
_loggerFactory.CreateLogger <MothraPeeringWorker>(),
_mockMothraConfigurationMonitor,
Substitute.For <IHostEnvironment>(),
Substitute.For <IClientVersion>(),
_mockStore,
_mockMothra,
_dataDirectory,
_peerManager,
_peerDiscoveredProcessor,
_rpcPeeringStatusProcessor,
_rpcBeaconBlocksByRangeProcessor,
_signedBeaconBlockProcessor
);
// act - start worker
await peeringWorker.StartAsync(CancellationToken.None);
await Task.Delay(TimeSpan.FromMilliseconds(100));
// - request for 4 blocks: 3, 4, 5, 6
BeaconBlocksByRange request = new BeaconBlocksByRange(
requestRoot,
new Slot(3),
4,
1);
byte[] data = new Byte[Ssz.Ssz.BeaconBlocksByRangeLength];
Ssz.Ssz.Encode(data, request);
_mockMothra.RaiseRpcReceived(
Encoding.UTF8.GetBytes("/eth2/beacon_chain/req/beacon_blocks_by_range/1/"),
0,
Encoding.UTF8.GetBytes("peer1"),
data);
// - wait for event to be handled
await Task.Delay(TimeSpan.FromMilliseconds(100));
// - finish
await peeringWorker.StopAsync(CancellationToken.None);
// assert - should receive in slot order
var receivedCalls = _mockNetworkPeering.ReceivedCalls().ToList();
receivedCalls.Count.ShouldBe(2);
receivedCalls[0].GetMethodInfo().Name.ShouldBe(nameof(_mockNetworkPeering.SendBlockAsync));
SignedBeaconBlock response0 = receivedCalls[0].GetArguments()[1].ShouldBeOfType <SignedBeaconBlock>();
response0.Message.Slot.ShouldBe(new Slot(4));
SignedBeaconBlock response1 = receivedCalls[1].GetArguments()[1].ShouldBeOfType <SignedBeaconBlock>();
response1.Message.Slot.ShouldBe(new Slot(6));
}