31   protected $active = null;  variable in Swift_Connection_Rotator
74     $start = $this->active === null ? 0 : ($this->active + 1);
85           $this->active = $id;
109     if ($this->active === null)
113     return $this->connections[$this->active]->read();
122     if ($this->active === null)
126     return $this->connections[$this->active]->write($command, $end);
134     if ($this->active === null) $this->nextConnection();
146     $this->active = null;
154     return (($this->active !== null) && $this->connections[$this->active]->isAlive());
162     return $this->active;
171     $this->connections[$this->active]->postConnect($instance);
178     $this->connections[$this->active]->setExtension($extension, $attributes);
185     return $this->connections[$this->active]->hasExtension($name);
192     return $this->connections[$this->active]->getAttributes($name);