public Task LeaveGroup(string crypto, string currency)
{
var groupName = GetKey(crypto, currency);
_connectionGroupStorage.Lock();
_connectionGroupStorage.Remove(Context.ConnectionId, groupName);
_connectionGroupStorage.Release();
return(base.Groups.RemoveFromGroupAsync(Context.ConnectionId, groupName));
}
private void CleanGroupResources(string groupName)
{
_connectionGroupStorage.Remove(groupName);
_priceTaskStorage.Remove(groupName);
}