/// <summary>Gets the maximum gossip cycles.</summary>
/// <param name="broadcastMessage"></param>
/// <returns></returns>
private static uint GetMaxGossipCycles(BroadcastMessage broadcastMessage)
{
var peerNetworkSize = broadcastMessage.PeerNetworkSize;
return((uint)(Math.Log(Math.Max(10, peerNetworkSize) / (double)MaxGossipPeersPerRound) /
Math.Max(1, broadcastMessage.BroadcastCount / MaxGossipPeersPerRound)));
}
private void SendBroadcastMessages(ProtocolMessage message, BroadcastMessage broadcastMessage)
{
try
{
var innerMessage = message.FromProtocolMessage <ProtocolMessage>();
var isOwnerOfBroadcast = innerMessage.PeerId.Equals(_peerId);
if (isOwnerOfBroadcast)
{
innerMessage = innerMessage.Sign(_signer, _signingContext);
message.Value = innerMessage.ToByteString();
}
// The fan out is how many peers to broadcast to
var fanOut = isOwnerOfBroadcast
? BroadcastOwnerMaximumGossipPeersPerRound
: (int)Math.Max(GetMaxGossipCycles(broadcastMessage), MaxGossipPeersPerRound);
var peersToGossip = GetRandomPeers(fanOut);
var correlationId = innerMessage.CorrelationId.ToCorrelationId();
//CLEAN UP
foreach (var peerIdentifier in peersToGossip)
{
_logger.Verbose("Broadcasting message {message}", message);
var protocolMessage = message.Clone();
protocolMessage.PeerId = _peerId;
_peerClient.SendMessage(new MessageDto(
protocolMessage,
peerIdentifier)
);
}
var updateCount = (uint)peersToGossip.Count;
if (updateCount <= 0)
{
return;
}
broadcastMessage.BroadcastCount += updateCount;
UpdatePendingRequest(correlationId, broadcastMessage);
}
catch (Exception e)
{
_logger.Error(e, nameof(SendBroadcastMessages));
}
}
/// <summary>Adds the gossip request.</summary>
/// <param name="broadcastMessage">The gossip request.</param>
/// <param name="correlationId">The message correlation ID</param>
private void UpdatePendingRequest(ICorrelationId correlationId, BroadcastMessage broadcastMessage)
{
_pendingRequests.Set(correlationId.Id, broadcastMessage, _entryOptions());
}
/// <summary>Determines whether this instance can gossip the specified correlation identifier.</summary>
/// <param name="request">The gossip request</param>
/// <returns><c>true</c> if this instance can gossip the specified correlation identifier; otherwise, <c>false</c>.</returns>
private bool CanBroadcast(BroadcastMessage request)
{
return(request.BroadcastCount < GetMaxGossipCycles(request));
}
