private void exception(Throwable e)
    {
        try
        {
            _persistent=false;
            int error_code=HttpResponse.__500_Internal_Server_Error;
            
            if (e instanceof HttpException)
            {
                error_code=((HttpException)e).getCode();
                
                if (_request==null)
                    log.warn(e.toString());
                else
                    log.warn(_request.getRequestLine()+" "+e.toString());
                log.debug(LogSupport.EXCEPTION,e);
            }
            else if (e instanceof EOFException)
            {
                LogSupport.ignore(log,e);
                return;
            }
            else
            {
                _request.setAttribute("javax.servlet.error.exception_type",e.getClass());
                _request.setAttribute("javax.servlet.error.exception",e);
                
                if (_request==null)
                    log.warn(LogSupport.EXCEPTION,e);
                else
                    log.warn(_request.getRequestLine(),e);
            }
            
            if (_response != null && !_response.isCommitted())
            {
                _response.reset();
                _response.removeField(HttpFields.__TransferEncoding);
                _response.setField(HttpFields.__Connection,HttpFields.__Close);
                _response.sendError(error_code);
            }
        }
        catch(Exception ex)
        {
            LogSupport.ignore(log,ex);
        }
    }