public virtual void CleanConnection(string connectionId)
{
Log.SignalR(LogTag.TextChatHub_CleaningConnection, new { connectionId });
// Remove Message Queue for this connection. Queues are created only when needed, so they might not always exists
if (MessageQueues.ContainsKey(connectionId))
{
MessageQueues[connectionId].Reset();
MessageQueues.Remove(connectionId);
}
// Remove all connections to rooms
RoomsConnections.RemoveConnectionFromAllRooms(connectionId);
// Remove User's Connection, and leave chat if this was the last connection
if (UsersConnections.ContainsValue(connectionId))
{
UserId userId = UsersConnections.GetFromValue(connectionId);
UsersConnections.Remove(connectionId);
if (!UsersConnections.ContainsKey(userId))
{
ChatCtrl.LeaveChat(userId);
}
}
else
{
Log.Info(LogTag.TextChatHub_AlreadyCleaned);
}
// Also remove LastSeen Info for this connection
if (LastSeenConnections.ContainsKey(connectionId))
{
LastSeenConnections.Remove(connectionId);
}
}
// Get the partner's connections related to a specific private room, along with the active connections to the room
private IEnumerable <ConnectionId> GetPartnerAndActiveConnections(RoomId roomId, UserId thisUserId, ConnectionId exceptConnection = null)
{
var roomConnIds = RoomsConnections.GetConnections(roomId, exceptConnection);
var userConnIds = GetPartnerConnections(roomId, thisUserId);
return(roomConnIds.Union(userConnIds).Where(c => c != exceptConnection));
}
//========== Background Methods ======================================================================================
private void HeartbeatCheck()
{
try { // Try catch needed because errors are otherwised silenced, somehow :-(
// Remove dead connections (Ping not received timely)
foreach (var kvp in LastSeenConnections.ToList())
{
if (kvp.Value < DateTime.Now.AddSeconds(-CleanZombieAfter))
{
var connectionId = kvp.Key;
Log.SignalR(LogTag.CleaningZombieConnection, new { connectionId });
CleanConnection(connectionId);
}
}
// Remove inactive members from "crowded" rooms
var chatState = ChatCtrl.GetState();
foreach (var roomKvp in chatState.Rooms)
{
if (roomKvp.Key.IsMonoLang() && roomKvp.Value.Count > BootAboveUserCount)
{
var mostInactiveUserKvp = roomKvp.Value.Aggregate((l, r) => l.Value.LastActive < r.Value.LastActive ? l : r);
if (mostInactiveUserKvp.Value.LastActive < DateTime.Now.AddMinutes(-BootOutOfRoomAfter))
{
Log.SignalR(LogTag.KickSlackerOutOfRoom, new { roomId = roomKvp.Key, userId = mostInactiveUserKvp.Key });
// Get the list of connections that have to leave the room
var userConnectionIds = UsersConnections.GetFromKey(mostInactiveUserKvp.Key)
.Where(connId => RoomsConnections.HasConnection(roomKvp.Key, connId))
.Select(connId => connId.ToString()).ToList();
Clients.Clients(userConnectionIds).LeaveRoom(roomKvp.Key);
}
}
}
// Check for inactive members
foreach (var chatUser in chatState.AllUsers.Values)
{
if (chatUser.LastActivity < DateTime.Now.AddMinutes(-UserIdleAfter))
{
ChatCtrl.SetIdleStatus(chatUser.Id);
Log.SignalR(LogTag.SetChatUserIdle, new { userId = chatUser.Id });
}
}
Log.SignalR(LogTag.HubHeartbeatCheckCompleted);
} catch (Exception e) {
Log.Error(LogTag.HeartbeatCheckError, e);
}
}
