const double hostMigrationGraceTime = 40; // seconds
void ValidateHostMigration()
{
if (clientDisconnections == null)
{
return; // Already host-migrated
}
owner.Log("Host migration validated");
clientDisconnections = null;
OpenToConnections(owner.GameInfo.IsInternetGame, owner.GameInfo.SideChannelAuth);
}
/// <summary>Construct for host migration only!</summary>
internal P2PServer(P2PNetwork owner, bool hostMigrationValidatedByServer, int maxConnectionId)
{
this.owner = owner;
owner.Log("Becoming P2P Server (host migration)");
hostMigrationTime = NetTime.Now;
clientDisconnections = new ClientDisconnections();
if (hostMigrationValidatedByServer)
{
ValidateHostMigration();
}
owner.LocalPeerInfo.IsServer = true;
// Recover information from application-connected peer list:
var leavingPeers = new List <RemotePeer>();
foreach (var remotePeer in owner.RemotePeers)
{
Debug.Assert(remotePeer.PeerInfo.IsApplicationConnected);
Debug.Assert(remotePeer.PeerInfo.ConnectionId <= maxConnectionId);
Debug.Assert(remotePeer.PeerInfo.InputAssignment != 0);
Debug.Assert((assignedInputs & remotePeer.PeerInfo.InputAssignment) == 0);
assignedInputs |= remotePeer.PeerInfo.InputAssignment;
Debug.Assert(!(remotePeer.PeerInfo.IsServer &&
remotePeer.IsConnected)); // old server should not still be connected
if (remotePeer.IsConnected)
{
locallyConnected.Add(remotePeer.Connection);
}
// Anyone not connected will get removed from the game in CompleteHostMigration
remotePeer.PeerInfo.IsServer = false; // Un-server-ify the original server
}
// And also from ourself:
Debug.Assert(owner.LocalPeerInfo.IsApplicationConnected);
Debug.Assert(owner.LocalPeerInfo.ConnectionId <= maxConnectionId);
Debug.Assert(owner.LocalPeerInfo.InputAssignment != 0);
Debug.Assert((assignedInputs & owner.LocalPeerInfo.InputAssignment) == 0);
assignedInputs |= owner.LocalPeerInfo.InputAssignment;
// This should be safe, as host migration should remove all traces peers beyond this point (including in the app layer) and is atomic
nextConnectionId = maxConnectionId + 1;
}