public static void AddConnection(HubCallerContext context) { var connectionId = context.ConnectionId; var userIdentifier = context.UserIdentifier; var emailClaim = context.User.Claims.FirstOrDefault(c => c.Type == ClaimTypes.Email)?.Value; if (userIdentifier != null) { var username = context.User.Identity.Name; var websiteClient = new SignalRClient(username, emailClaim, connectionId); if (UserConnections.TryGetValue(userIdentifier, out var connectionList)) { connectionList.Add(websiteClient); } else { UserConnections.TryAdd(userIdentifier, new List <SignalRClient>() { websiteClient }); } } else { VisitorConnections.Add(connectionId); } }