/**
  * @param $topic
  * @param $type
  * @param $msg
  * @throws \Exception
  * @return bool
  */
 public function publish($topic, $type, $msg)
 {
     if (!$this->connected) {
         $this->connect();
     }
     if (!$this->greeted) {
         $this->greet();
     }
     if (!$this->jsonEnable) {
         $msgEntity = new \StringMessage();
         $msgHeader = new \Header();
         $msgHeader->set_groupId($this->group);
         $msgHeader->set_commit(true);
         $msgHeader->set_deliverLimit(100);
         $msgHeader->set_expiredTime(-1);
         $msgHeader->set_fly(false);
         $msgHeader->set_topic($topic);
         $guid = new Guid();
         $msgHeader->set_messageId($guid->toString());
         $msgHeader->set_messageType($type);
         $msgEntity->set_header($msgHeader);
         $msgEntity->set_body($msg);
         $send = $msgEntity->SerializeToString();
         if (function_exists('kiteq_request')) {
             list($data, $type) = kiteq_request($this->conn, $send, self::CMD_STRING_MESSAGE);
         } else {
             // 发送
             $this->innerSend($send, self::CMD_STRING_MESSAGE);
             // 接受
             list($type, $data) = $this->innerGet();
         }
         if ($type != self::CMD_MESSAGE_STORE_ACK) {
             throw new \Exception("kiteq 验证错误 MessageType {$type}");
         }
         $ack = new \MessageStoreAck();
         $ack->ParseFromString($data);
         if ($ack->getStatus() == false) {
             throw new \Exception($ack->getFeedback());
         }
         return $ack->getStatus();
     } else {
         $msgEntity = array();
         $msgHeader = array('groupId' => $this->group, 'commit' => true, 'deliverLimit' => 100, 'expiredTime' => -1, 'fly' => false, 'topic' => $topic, 'messageId' => uniqid(), 'messageType' => $type);
         $msgEntity['header'] = $msgHeader;
         $msgEntity['body'] = $msg;
         $send = json_encode($msgEntity);
         if (function_exists('kiteq_request')) {
             list($data, $type) = kiteq_request($this->conn, $send, self::CMD_STRING_MESSAGE | 0x80);
         } else {
             // 发送
             $this->innerSend($send, self::CMD_STRING_MESSAGE | 0x80);
             // 接受
             list($type, $data) = $this->innerGet();
         }
         if ($type != self::CMD_MESSAGE_STORE_ACK) {
             throw new \Exception("kiteq 验证错误 MessageType {$type}");
         }
         $ack = json_decode($data, true);
         if ($ack->getStatus() == false) {
             throw new \Exception($ack->getFeedback());
         }
         return $ack->getStatus();
     }
 }