private void Handle(StatusMessage status)
{
Metrics.StatusesReceived++;
if (_statusReceived)
{
throw new SubprotocolException($"{nameof(StatusMessage)} has already been received in the past");
}
_statusReceived = true;
_remoteHeadBlockHash = status.BestHash;
ReceivedProtocolInitMsg(status);
SyncPeerProtocolInitializedEventArgs eventArgs = new SyncPeerProtocolInitializedEventArgs(this)
{
ChainId = (long)status.ChainId,
BestHash = status.BestHash,
GenesisHash = status.GenesisHash,
Protocol = status.Protocol,
ProtocolVersion = status.ProtocolVersion,
TotalDifficulty = status.TotalDifficulty
};
HeadHash = status.BestHash;
TotalDifficulty = status.TotalDifficulty;
ProtocolInitialized?.Invoke(this, eventArgs);
}
public void Handle(StatusMessage status)
{
Metrics.LesStatusesReceived++;
// set defaults
if (!status.AnnounceType.HasValue)
{
status.AnnounceType = 1;
}
if (_statusReceived)
{
throw new SubprotocolException($"{nameof(StatusMessage)} has already been received in the past");
}
_statusReceived = true;
if (Logger.IsTrace)
{
Logger.Trace($"LES received status from {Session.Node:c} with" +
Environment.NewLine + $" prot version\t{status.ProtocolVersion}" +
Environment.NewLine + $" network ID\t{status.ChainId}," +
Environment.NewLine + $" genesis hash\t{status.GenesisHash}," +
Environment.NewLine + $" best hash\t{status.BestHash}," +
Environment.NewLine + $" head blockno\t{status.HeadBlockNo}," +
Environment.NewLine + $" difficulty\t{status.TotalDifficulty}" +
Environment.NewLine + $" announce type\t{status.AnnounceType}" +
Environment.NewLine + $" serve headers\t{status.ServeHeaders}" +
Environment.NewLine + $" serve chain since\t{status.ServeChainSince}" +
Environment.NewLine + $" serve recent chain\t{status.ServeRecentChain}" +
Environment.NewLine + $" serve state since\t{status.ServeStateSince}" +
Environment.NewLine + $" serve recent state\t{status.ServeRecentState}" +
Environment.NewLine + $" transaction relay\t{status.TxRelay}" +
Environment.NewLine + $" buffer limit\t{status.BufferLimit}" +
Environment.NewLine + $" max recharge\t{status.MaximumRechargeRate}");
}
// todo - log max request costs table
_remoteHeadBlockHash = status.BestHash;
ReceivedProtocolInitMsg(status);
SyncPeerProtocolInitializedEventArgs eventArgs = new SyncPeerProtocolInitializedEventArgs(this)
{
ChainId = (long)status.ChainId,
BestHash = status.BestHash,
GenesisHash = status.GenesisHash,
Protocol = status.Protocol,
ProtocolVersion = status.ProtocolVersion,
TotalDifficulty = status.TotalDifficulty
};
TotalDifficulty = status.TotalDifficulty;
RequestedAnnounceType = (LesAnnounceType)status.AnnounceType.Value;
if (RequestedAnnounceType == LesAnnounceType.Signed)
{
throw new NotImplementedException("Signed announcements are not yet supported.");
}
ProtocolInitialized?.Invoke(this, eventArgs);
}
public bool DisconnectOnInvalid(string protocol, ISession session, ProtocolInitializedEventArgs eventArgs)
{
switch (protocol)
{
case Protocol.P2P:
P2PProtocolInitializedEventArgs args = (P2PProtocolInitializedEventArgs)eventArgs;
if (!ValidateP2PVersion(args.P2PVersion))
{
if (_logger.IsTrace)
{
_logger.Trace($"Initiating disconnect with peer: {session.RemoteNodeId}, incorrect P2PVersion: {args.P2PVersion}");
}
_nodeStatsManager.ReportFailedValidation(session.Node, CompatibilityValidationType.P2PVersion);
Disconnect(session, DisconnectReason.IncompatibleP2PVersion, $"p2p.{args.P2PVersion}");
if (session.Node.IsStatic && _logger.IsWarn)
{
_logger.Warn($"Disconnected an invalid static node: {session.Node.Host}:{session.Node.Port}, reason: {DisconnectReason.IncompatibleP2PVersion}");
}
return(false);
}
if (!ValidateCapabilities(args.Capabilities))
{
if (_logger.IsTrace)
{
_logger.Trace($"Initiating disconnect with peer: {session.RemoteNodeId}, no Eth62 capability, supported capabilities: [{string.Join(",", args.Capabilities.Select(x => $"{x.ProtocolCode}v{x.Version}"))}]");
}
_nodeStatsManager.ReportFailedValidation(session.Node, CompatibilityValidationType.Capabilities);
Disconnect(session, DisconnectReason.UselessPeer, "capabilities");
if (session.Node.IsStatic && _logger.IsWarn)
{
_logger.Warn($"Disconnected an invalid static node: {session.Node.Host}:{session.Node.Port}, reason: {DisconnectReason.UselessPeer} (capabilities)");
}
return(false);
}
break;
case Protocol.Eth:
case Protocol.Les:
SyncPeerProtocolInitializedEventArgs syncPeerArgs = (SyncPeerProtocolInitializedEventArgs)eventArgs;
if (!ValidateChainId(syncPeerArgs.ChainId))
{
if (_logger.IsTrace)
{
_logger.Trace($"Initiating disconnect with peer: {session.RemoteNodeId}, different chainId: {ChainId.GetChainName((int) syncPeerArgs.ChainId)}, our chainId: {ChainId.GetChainName(_blockTree.ChainId)}");
}
_nodeStatsManager.ReportFailedValidation(session.Node, CompatibilityValidationType.ChainId);
Disconnect(session, DisconnectReason.UselessPeer, $"invalid chain id - {syncPeerArgs.ChainId}");
if (session.Node.IsStatic && _logger.IsWarn)
{
_logger.Warn($"Disconnected an invalid static node: {session.Node.Host}:{session.Node.Port}, reason: {DisconnectReason.UselessPeer} (invalid chain id - {syncPeerArgs.ChainId})");
}
return(false);
}
if (syncPeerArgs.GenesisHash != _blockTree.Genesis.Hash)
{
if (_logger.IsTrace)
{
_logger.Trace($"Initiating disconnect with peer: {session.RemoteNodeId}, different genesis hash: {syncPeerArgs.GenesisHash}, our: {_blockTree.Genesis.Hash}");
}
_nodeStatsManager.ReportFailedValidation(session.Node, CompatibilityValidationType.DifferentGenesis);
Disconnect(session, DisconnectReason.BreachOfProtocol, "invalid genesis");
if (session.Node.IsStatic && _logger.IsWarn)
{
_logger.Warn($"Disconnected an invalid static node: {session.Node.Host}:{session.Node.Port}, reason: {DisconnectReason.BreachOfProtocol} (invalid genesis)");
}
return(false);
}
break;
}
return(true);
}