heartbeat problem when server node uses VIP drift

[kangkei zai]

the server node use VIP,  client after setUpConsumer :

while (count($this->channel->callbacks)) {

    $this->channel->wait();

}

when the VIP has not drift, heatbeat is ok,

but after VIP drift, client process will hold at this function :  AbstractConnection::wait channel   , beacuse 

list($frame_type, $frame_channel, $payload) = $this->wait_frame($_timeout);

timeout default is 0;

later , server connections will broken， client has no heartbeat, bloking......