当rabbitMQ中包含100个以上的作业时，AMQP使用者脚本将断开连接

Question

rabbitMQ中包含100个以上的作业时，AMQP使用者脚本将断开连接，并产生以下错误。重新启动使用者后，它再次执行一定数量的作业，并再次断开连接。 脚本中没有php错误

错误

Error: Broken pipe or closed connection

发布者脚本

 $conn = new AMQPStreamConnection($this->host,$this->port, $this->user, $this->pass, $this->vhost);
        $ch = $conn->channel();

        //Declare queue in rabbitmq
        $ch->queue_declare($queue, false, true, false, false, false,['x-max-priority' => ['I',maxPriority]]);

        //Declare exchange
        $ch->exchange_declare($exchange, 'direct', false, true, false);

        //Bind exchange with queue
        $ch->queue_bind($queue, $this->exchange,$binding_key);

        //Create message
        //$msg_body = $serviceName.'_'.$serviceValue;
        $msg_body = $serviceName;
        $msg = new AMQPMessage($msg_body, array('content_type' => 'text/plain','priority'=>$priority, 'delivery_mode' => AMQPMessage::DELIVERY_MODE_PERSISTENT));
        $ch->basic_publish($msg, $this->exchange,$binding_key);

        $ch->close();
        $conn->close();

消费脚本

$consumer_tag = 'consumer2';

    define('AMQP_DEBUG', true);

    $conn = new AMQPStreamConnection($host,$port, $user, $pass, $vhost);

    $ch = $conn->channel();

    $ch->queue_declare($queue, false, true, false, false, false,['x-max-priority' => ['I', $maxPriority]]);

    $ch->exchange_declare($exchange, 'direct', false, true, false);

    $ch->queue_bind($queue,$exchange,$binding_key);

    $ch->basic_consume($queue, $consumer_tag, false, false, false, false,function ($msg) {

        echo "\n########################################PROCESS START################################\n";

        if (!empty($msg->body)){
            processeEmail($msg->body);              
        }else{
            echo 'Else';
            echo '<pre>';
            var_dump($msg->body);
        }

        echo "\n#########################################PROCESS END##################################\n";

        $msg->delivery_info['channel']->basic_ack($msg->delivery_info['delivery_tag']);

        // Send a message with the string "quit" to cancel the consumer.
        if ($msg->body === 'quit') {
            $msg->delivery_info['channel']->basic_cancel($msg->delivery_info['consumer_tag']);
        }
    });

    register_shutdown_function(function ($ch,$conn) {
        $ch->close();
        $conn->close();
    }, $ch, $conn);

    // Loop as long as the channel has callbacks registered
    while (count($ch->callbacks)) {
        $ch->wait();
    }

使用版本

RabbitMQ 3.6.12

Erlang R16B03-1

PHP 5.6.36

CentOS Linux版本7.5.1804