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978 lines
30 KiB
978 lines
30 KiB
<?php
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/**
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* This file is part of workerman.
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*
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* Licensed under The MIT License
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* For full copyright and license information, please see the MIT-LICENSE.txt
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* Redistributions of files must retain the above copyright notice.
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*
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* @author walkor<walkor@workerman.net>
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* @copyright walkor<walkor@workerman.net>
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* @link http://www.workerman.net/
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* @license http://www.opensource.org/licenses/mit-license.php MIT License
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*/
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/**
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* 数据发送相关
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* @version 2.0.5
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*/
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class Gateway
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{
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/**
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* gateway 实例
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*
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* @var object
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*/
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protected static $businessWorker = null;
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/**
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* 注册中心地址
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*
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* @var string
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*/
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public static $registerAddress = '127.0.0.1:1236';
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/**
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* 秘钥
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* @var string
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*/
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public static $secretKey = '';
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/**
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* 向所有客户端连接(或者 client_id_array 指定的客户端连接)广播消息
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*
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* @param string $message 向客户端发送的消息
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* @param array $client_id_array 客户端 id 数组
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* @return void
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*/
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public static function sendToAll($message, $client_id_array = null)
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{
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$gateway_data = GatewayProtocol::$empty;
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$gateway_data['cmd'] = GatewayProtocol::CMD_SEND_TO_ALL;
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$gateway_data['body'] = $message;
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if ($client_id_array) {
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$data_array = array();
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foreach ($client_id_array as $client_id) {
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$address = Context::clientIdToAddress($client_id);
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$key = long2ip($address['local_ip']) . ":{$address['local_port']}";
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$data_array[$key][$address['connection_id']] = $address['connection_id'];
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}
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foreach ($data_array as $addr => $connection_id_list) {
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$the_gateway_data = $gateway_data;
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$the_gateway_data['ext_data'] = call_user_func_array('pack',
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array_merge(array('N*'), $connection_id_list));
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self::sendToGateway($addr, $the_gateway_data);
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}
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return;
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} elseif (empty($client_id_array) && is_array($client_id_array)) {
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return;
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}
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self::sendToAllGateway($gateway_data);
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}
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/**
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* 向某个客户端连接发消息
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*
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* @param int $client_id
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* @param string $message
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* @return bool
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*/
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public static function sendToClient($client_id, $message)
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{
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print_r($message);
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return self::sendCmdAndMessageToClient($client_id, GatewayProtocol::CMD_SEND_TO_ONE, $message);
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}
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/**
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* 向当前客户端连接发送消息
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*
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* @param string $message
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* @return bool
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*/
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public static function sendToCurrentClient($message)
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{
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return self::sendCmdAndMessageToClient(null, GatewayProtocol::CMD_SEND_TO_ONE, $message);
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}
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/**
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* 判断某个uid是否在线
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*
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* @param string $uid
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* @return int 0|1
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*/
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public static function isUidOnline($uid)
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{
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return (int)self::getClientIdByUid($uid);
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}
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/**
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* 判断某个客户端连接是否在线
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*
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* @param int $client_id
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* @return int 0|1
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*/
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public static function isOnline($client_id)
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{
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$address_data = Context::clientIdToAddress($client_id);
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$address = long2ip($address_data['local_ip']) . ":{$address_data['local_port']}";
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if (isset(self::$businessWorker)) {
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if (!isset(self::$businessWorker->gatewayConnections[$address])) {
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return 0;
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}
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}
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$gateway_data = GatewayProtocol::$empty;
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$gateway_data['cmd'] = GatewayProtocol::CMD_IS_ONLINE;
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$gateway_data['connection_id'] = $address_data['connection_id'];
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return (int)self::sendAndRecv($address, $gateway_data);
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}
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/**
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* 获取在线状态，目前返回一个在线 client_id 数组，client_id为 key
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*
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* @param string $group
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* @return array
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*/
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public static function getAllClientInfo($group = null)
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{
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$gateway_data = GatewayProtocol::$empty;
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if (!$group) {
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$gateway_data['cmd'] = GatewayProtocol::CMD_GET_ALL_CLIENT_INFO;
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} else {
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$gateway_data['cmd'] = GatewayProtocol::CMD_GET_CLINET_INFO_BY_GROUP;
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$gateway_data['ext_data'] = $group;
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}
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$status_data = array();
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$all_buffer_array = self::getBufferFromAllGateway($gateway_data);
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foreach ($all_buffer_array as $local_ip => $buffer_array) {
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foreach ($buffer_array as $local_port => $data) {
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if ($data) {
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foreach ($data as $connection_id => $session_buffer) {
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$client_id = Context::addressToClientId($local_ip, $local_port, $connection_id);
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if ($client_id === Context::$client_id) {
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$status_data[$client_id] = (array)$_SESSION;
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} else {
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$status_data[$client_id] = $session_buffer ? Context::sessionDecode($session_buffer) : array();
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}
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}
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}
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}
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}
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return $status_data;
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}
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/**
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* 获取某个组的连接信息
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*
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* @param string $group
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* @return array
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*/
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public static function getClientInfoByGroup($group)
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{
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return self::getAllClientInfo($group);
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}
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/**
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* 获取所有连接数
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*
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* @return int
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*/
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public static function getAllClientCount()
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{
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return self::getClientCountByGroup();
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}
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/**
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* 获取某个组的在线连接数
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*
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* @param string $group
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* @return int
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*/
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public static function getClientCountByGroup($group = '')
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{
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$gateway_data = GatewayProtocol::$empty;
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$gateway_data['cmd'] = GatewayProtocol::CMD_GET_CLIENT_COUNT_BY_GROUP;
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$gateway_data['ext_data'] = $group;
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$total_count = 0;
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$all_buffer_array = self::getBufferFromAllGateway($gateway_data);
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foreach ($all_buffer_array as $local_ip => $buffer_array) {
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foreach ($buffer_array as $local_port => $count) {
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if ($count) {
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$total_count += $count;
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}
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}
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}
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return $total_count;
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}
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/**
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* 获取与 uid 绑定的 client_id 列表
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*
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* @param string $uid
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* @return array
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*/
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public static function getClientIdByUid($uid)
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{
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$gateway_data = GatewayProtocol::$empty;
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$gateway_data['cmd'] = GatewayProtocol::CMD_GET_CLIENT_ID_BY_UID;
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$gateway_data['ext_data'] = $uid;
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$client_list = array();
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$all_buffer_array = self::getBufferFromAllGateway($gateway_data);
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foreach ($all_buffer_array as $local_ip => $buffer_array) {
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foreach ($buffer_array as $local_port => $connection_id_array) {
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if ($connection_id_array) {
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foreach ($connection_id_array as $connection_id) {
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$client_list[] = Context::addressToClientId($local_ip, $local_port, $connection_id);
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}
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}
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}
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}
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return $client_list;
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}
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/**
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* 生成验证包，用于验证此客户端的合法性
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*
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* @return string
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*/
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protected static function generateAuthBuffer()
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{
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$gateway_data = GatewayProtocol::$empty;
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$gateway_data['cmd'] = GatewayProtocol::CMD_GATEWAY_CLIENT_CONNECT;
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$gateway_data['body'] = json_encode(array(
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'secret_key' => self::$secretKey,
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));
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return GatewayProtocol::encode($gateway_data);
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}
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/**
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* 批量向所有 gateway 发包，并得到返回数组
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*
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* @param string $gateway_data
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* @return array
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* @throws Exception
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*/
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protected static function getBufferFromAllGateway($gateway_data)
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{
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$gateway_buffer = GatewayProtocol::encode($gateway_data);
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$gateway_buffer = self::$secretKey ? self::generateAuthBuffer() . $gateway_buffer : $gateway_buffer;
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if (isset(self::$businessWorker)) {
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$all_addresses = self::$businessWorker->getAllGatewayAddresses();
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if (empty($all_addresses)) {
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throw new Exception('businessWorker::getAllGatewayAddresses return empty');
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}
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} else {
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$all_addresses = self::getAllGatewayAddressesFromRegister();
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if (empty($all_addresses)) {
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return array();
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}
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}
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$client_array = $status_data = $client_address_map = $receive_buffer_array = $recv_length_array = array();
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// 批量向所有gateway进程发送请求数据
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foreach ($all_addresses as $address) {
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$client = stream_socket_client("tcp://$address", $errno, $errmsg);
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if ($client && strlen($gateway_buffer) === stream_socket_sendto($client, $gateway_buffer)) {
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$socket_id = (int)$client;
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$client_array[$socket_id] = $client;
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$client_address_map[$socket_id] = explode(':', $address);
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$receive_buffer_array[$socket_id] = '';
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}
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}
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// 超时1秒
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$timeout = 1;
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$time_start = microtime(true);
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// 批量接收请求
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while (count($client_array) > 0) {
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$write = $except = array();
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$read = $client_array;
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if (@stream_select($read, $write, $except, $timeout)) {
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foreach ($read as $client) {
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$socket_id = (int)$client;
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$buffer = stream_socket_recvfrom($client, 65535);
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if ($buffer !== '' && $buffer !== false) {
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$receive_buffer_array[$socket_id] .= $buffer;
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$receive_length = strlen($receive_buffer_array[$socket_id]);
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if (empty($recv_length_array[$socket_id]) && $receive_length >= 4) {
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$recv_length_array[$socket_id] = current(unpack('N', $receive_buffer_array[$socket_id]));
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}
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if (!empty($recv_length_array[$socket_id]) && $receive_length >= $recv_length_array[$socket_id] + 4) {
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unset($client_array[$socket_id]);
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}
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} elseif (feof($client)) {
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unset($client_array[$socket_id]);
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}
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}
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}
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if (microtime(true) - $time_start > $timeout) {
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break;
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}
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}
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$format_buffer_array = array();
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foreach ($receive_buffer_array as $socket_id => $buffer) {
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$local_ip = ip2long($client_address_map[$socket_id][0]);
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$local_port = $client_address_map[$socket_id][1];
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$format_buffer_array[$local_ip][$local_port] = unserialize(substr($buffer, 4));
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}
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return $format_buffer_array;
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}
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/**
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* 关闭某个客户端
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*
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* @param int $client_id
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* @return bool
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*/
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public static function closeClient($client_id)
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{
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if ($client_id === Context::$client_id) {
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return self::closeCurrentClient();
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} // 不是发给当前用户则使用存储中的地址
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else {
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$address_data = Context::clientIdToAddress($client_id);
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$address = long2ip($address_data['local_ip']) . ":{$address_data['local_port']}";
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return self::kickAddress($address, $address_data['connection_id']);
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}
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}
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/**
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* 踢掉当前客户端
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*
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* @return bool
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* @throws Exception
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*/
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public static function closeCurrentClient()
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{
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if (!Context::$connection_id) {
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throw new Exception('closeCurrentClient can not be called in async context');
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}
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return self::kickAddress(long2ip(Context::$local_ip) . ':' . Context::$local_port, Context::$connection_id);
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}
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/**
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* 将 client_id 与 uid 绑定
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*
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* @param int $client_id
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* @param int|string $uid
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* @return bool
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*/
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public static function bindUid($client_id, $uid)
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{
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return self::sendCmdAndMessageToClient($client_id, GatewayProtocol::CMD_BIND_UID, '', $uid);
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}
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/**
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* 将 client_id 与 uid 解除绑定
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*
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* @param int $client_id
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* @param int|string $uid
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* @return bool
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*/
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public static function unbindUid($client_id, $uid)
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{
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return self::sendCmdAndMessageToClient($client_id, GatewayProtocol::CMD_UNBIND_UID, '', $uid);
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}
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/**
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* 将 client_id 加入组
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*
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* @param int $client_id
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* @param int|string $group
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* @return bool
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*/
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public static function joinGroup($client_id, $group)
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{
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return self::sendCmdAndMessageToClient($client_id, GatewayProtocol::CMD_JOIN_GROUP, '', $group);
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}
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/**
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* 将 client_id 离开组
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*
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* @param int $client_id
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* @param int|string $group
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* @return bool
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*/
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public static function leaveGroup($client_id, $group)
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{
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return self::sendCmdAndMessageToClient($client_id, GatewayProtocol::CMD_LEAVE_GROUP, '', $group);
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}
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/**
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* 向所有 uid 发送
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*
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* @param int|string|array $uid
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* @param string $message
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*/
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public static function sendToUid($uid, $message)
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{
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$gateway_data = GatewayProtocol::$empty;
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$gateway_data['cmd'] = GatewayProtocol::CMD_SEND_TO_UID;
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$gateway_data['body'] = $message;
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if (!is_array($uid)) {
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$uid = array($uid);
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}
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$gateway_data['ext_data'] = json_encode($uid);
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self::sendToAllGateway($gateway_data);
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}
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/**
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* 向 group 发送
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*
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* @param int|string|array $group
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* @param string $message
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*/
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public static function sendToGroup($group, $message)
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{
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$gateway_data = GatewayProtocol::$empty;
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$gateway_data['cmd'] = GatewayProtocol::CMD_SEND_TO_GROUP;
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$gateway_data['body'] = $message;
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if (!is_array($group)) {
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$group = array($group);
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}
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$gateway_data['ext_data'] = json_encode($group);
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self::sendToAllGateway($gateway_data);
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}
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/**
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* 更新 session，框架自动调用，开发者不要调用
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*
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* @param int $client_id
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* @param string $session_str
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* @return bool
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*/
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public static function setSocketSession($client_id, $session_str)
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{
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return self::sendCmdAndMessageToClient($client_id, GatewayProtocol::CMD_SET_SESSION, '', $session_str);
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}
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/**
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* 设置 session，原session值会被覆盖
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*
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* @param int $client_id
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* @param array $session
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*/
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public static function setSession($client_id, array $session)
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{
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if (Context::$client_id === $client_id) {
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$_SESSION = $session;
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Context::$old_session = $_SESSION;
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}
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return self::setSocketSession($client_id, Context::sessionEncode($session));
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}
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/**
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* 更新 session，实际上是与老的session合并
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*
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* @param int $client_id
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* @param array $session
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*/
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public static function updateSession($client_id, array $session)
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{
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if (Context::$client_id === $client_id) {
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$_SESSION = $session + (array)$_SESSION;
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Context::$old_session = $_SESSION;
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}
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return self::sendCmdAndMessageToClient($client_id, GatewayProtocol::CMD_UPDATE_SESSION, '', Context::sessionEncode($session));
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}
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/**
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* 获取某个client_id的session
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*
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* @param int $client_id
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* @return mixed false表示出错、null表示用户不存在、array表示具体的session信息
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*/
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public static function getSession($client_id)
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{
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$address_data = Context::clientIdToAddress($client_id);
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$address = long2ip($address_data['local_ip']) . ":{$address_data['local_port']}";
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if (isset(self::$businessWorker)) {
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if (!isset(self::$businessWorker->gatewayConnections[$address])) {
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return null;
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}
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}
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$gateway_data = GatewayProtocol::$empty;
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$gateway_data['cmd'] = GatewayProtocol::CMD_GET_SESSION_BY_CLIENT_ID;
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$gateway_data['connection_id'] = $address_data['connection_id'];
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return self::sendAndRecv($address, $gateway_data);
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}
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/**
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* 想某个用户网关发送命令和消息
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*
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* @param int $client_id
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* @param int $cmd
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* @param string $message
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|
* @param string $ext_data
|
|
* @return boolean
|
|
*/
|
|
protected static function sendCmdAndMessageToClient($client_id, $cmd, $message, $ext_data = '')
|
|
{
|
|
// 如果是发给当前用户则直接获取上下文中的地址
|
|
if ($client_id === Context::$client_id || $client_id === null) {
|
|
$address = long2ip(Context::$local_ip) . ':' . Context::$local_port;
|
|
$connection_id = Context::$connection_id;
|
|
} else {
|
|
$address_data = Context::clientIdToAddress($client_id);
|
|
$address = long2ip($address_data['local_ip']) . ":{$address_data['local_port']}";
|
|
$connection_id = $address_data['connection_id'];
|
|
}
|
|
$gateway_data = GatewayProtocol::$empty;
|
|
$gateway_data['cmd'] = $cmd;
|
|
$gateway_data['connection_id'] = $connection_id;
|
|
$gateway_data['body'] = $message;
|
|
if (!empty($ext_data)) {
|
|
$gateway_data['ext_data'] = $ext_data;
|
|
}
|
|
|
|
return self::sendToGateway($address, $gateway_data);
|
|
}
|
|
|
|
/**
|
|
* 发送数据并返回
|
|
*
|
|
* @param int $address
|
|
* @param mixed $data
|
|
* @return bool
|
|
* @throws Exception
|
|
*/
|
|
protected static function sendAndRecv($address, $data)
|
|
{
|
|
$buffer = GatewayProtocol::encode($data);
|
|
$buffer = self::$secretKey ? self::generateAuthBuffer() . $buffer : $buffer;
|
|
$client = stream_socket_client("tcp://$address", $errno, $errmsg);
|
|
if (!$client) {
|
|
throw new Exception("can not connect to tcp://$address $errmsg");
|
|
}
|
|
if (strlen($buffer) === stream_socket_sendto($client, $buffer)) {
|
|
$timeout = 1;
|
|
// 阻塞读
|
|
stream_set_blocking($client, 1);
|
|
// 1秒超时
|
|
stream_set_timeout($client, 1);
|
|
$all_buffer = '';
|
|
$time_start = microtime(true);
|
|
$pack_len = 0;
|
|
while (1) {
|
|
$buf = stream_socket_recvfrom($client, 655350);
|
|
if ($buf !== '' && $buf !== false) {
|
|
$all_buffer .= $buf;
|
|
} else {
|
|
if (feof($client)) {
|
|
throw new Exception("connection close tcp://$address");
|
|
} elseif (microtime(true) - $time_start > $timeout) {
|
|
break;
|
|
}
|
|
continue;
|
|
}
|
|
$recv_len = strlen($all_buffer);
|
|
if (!$pack_len && $recv_len >= 4) {
|
|
$pack_len= current(unpack('N', $all_buffer));
|
|
}
|
|
// 回复的数据都是以\n结尾
|
|
if (($pack_len && $recv_len >= $pack_len + 4) || microtime(true) - $time_start > $timeout) {
|
|
break;
|
|
}
|
|
}
|
|
// 返回结果
|
|
return unserialize(substr($all_buffer, 4));
|
|
} else {
|
|
throw new Exception("sendAndRecv($address, \$bufer) fail ! Can not send data!", 502);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 发送数据到网关
|
|
*
|
|
* @param string $address
|
|
* @param mixed $gateway_data
|
|
* @return bool
|
|
*/
|
|
protected static function sendToGateway($address, $gateway_data)
|
|
{
|
|
// 有$businessWorker说明是workerman环境，使用$businessWorker发送数据
|
|
if (self::$businessWorker) {
|
|
if (!isset(self::$businessWorker->gatewayConnections[$address])) {
|
|
return false;
|
|
}
|
|
return self::$businessWorker->gatewayConnections[$address]->send($gateway_data);
|
|
}
|
|
// 非workerman环境
|
|
$gateway_buffer = GatewayProtocol::encode($gateway_data);
|
|
$gateway_buffer = self::$secretKey ? self::generateAuthBuffer() . $gateway_buffer : $gateway_buffer;
|
|
$client = stream_socket_client("tcp://$address", $errno, $errmsg);
|
|
return strlen($gateway_buffer) == stream_socket_sendto($client, $gateway_buffer);
|
|
}
|
|
|
|
/**
|
|
* 向所有 gateway 发送数据
|
|
*
|
|
* @param string $gateway_data
|
|
* @throws Exception
|
|
*/
|
|
protected static function sendToAllGateway($gateway_data)
|
|
{
|
|
// 如果有businessWorker实例，说明运行在workerman环境中，通过businessWorker中的长连接发送数据
|
|
if (self::$businessWorker) {
|
|
foreach (self::$businessWorker->gatewayConnections as $gateway_connection) {
|
|
/** @var TcpConnection $gateway_connection */
|
|
$gateway_connection->send($gateway_data);
|
|
}
|
|
} // 运行在其它环境中，通过注册中心得到gateway地址
|
|
else {
|
|
$all_addresses = self::getAllGatewayAddressesFromRegister();
|
|
if (!$all_addresses) {
|
|
throw new Exception('Gateway::getAllGatewayAddressesFromRegister() with registerAddress:' .
|
|
self::$registerAddress . ' return ' . var_export($all_addresses, true));
|
|
}
|
|
foreach ($all_addresses as $address) {
|
|
self::sendToGateway($address, $gateway_data);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* 踢掉某个网关的 socket
|
|
*
|
|
* @param string $address
|
|
* @param int $connection_id
|
|
* @return bool
|
|
*/
|
|
protected static function kickAddress($address, $connection_id)
|
|
{
|
|
$gateway_data = GatewayProtocol::$empty;
|
|
$gateway_data['cmd'] = GatewayProtocol::CMD_KICK;
|
|
$gateway_data['connection_id'] = $connection_id;
|
|
return self::sendToGateway($address, $gateway_data);
|
|
}
|
|
|
|
/**
|
|
* 设置 gateway 实例
|
|
*
|
|
* @param \GatewayWorker\BusinessWorker $business_worker_instance
|
|
*/
|
|
public static function setBusinessWorker($business_worker_instance)
|
|
{
|
|
self::$businessWorker = $business_worker_instance;
|
|
}
|
|
|
|
/**
|
|
* 获取通过注册中心获取所有 gateway 通讯地址
|
|
*
|
|
* @return array
|
|
* @throws Exception
|
|
*/
|
|
protected static function getAllGatewayAddressesFromRegister()
|
|
{
|
|
$client = stream_socket_client('tcp://' . self::$registerAddress, $errno, $errmsg, 1);
|
|
if (!$client) {
|
|
throw new Exception('Can not connect to tcp://' . self::$registerAddress . ' ' . $errmsg);
|
|
}
|
|
fwrite($client, '{"event":"worker_connect","secret_key":"' . self::$secretKey . '"}' . "\n");
|
|
stream_set_timeout($client, 1);
|
|
$ret = fgets($client, 65535);
|
|
if (!$ret || !$data = json_decode(trim($ret), true)) {
|
|
throw new Exception('getAllGatewayAddressesFromRegister fail. tcp://' .
|
|
self::$registerAddress . ' return ' . var_export($ret, true));
|
|
}
|
|
return $data['addresses'];
|
|
}
|
|
}
|
|
|
|
|
|
/**
|
|
* 上下文 包含当前用户uid， 内部通信local_ip local_port socket_id ，以及客户端client_ip client_port
|
|
*/
|
|
class Context
|
|
{
|
|
/**
|
|
* 内部通讯id
|
|
* @var string
|
|
*/
|
|
public static $local_ip;
|
|
/**
|
|
* 内部通讯端口
|
|
* @var int
|
|
*/
|
|
public static $local_port;
|
|
/**
|
|
* 客户端ip
|
|
* @var string
|
|
*/
|
|
public static $client_ip;
|
|
/**
|
|
* 客户端端口
|
|
* @var int
|
|
*/
|
|
public static $client_port;
|
|
/**
|
|
* client_id
|
|
* @var string
|
|
*/
|
|
public static $client_id;
|
|
/**
|
|
* 连接connection->id
|
|
* @var int
|
|
*/
|
|
public static $connection_id;
|
|
|
|
/**
|
|
* 旧的session
|
|
*
|
|
* @var string
|
|
*/
|
|
public static $old_session;
|
|
|
|
/**
|
|
* 编码session
|
|
* @param mixed $session_data
|
|
* @return string
|
|
*/
|
|
public static function sessionEncode($session_data = '')
|
|
{
|
|
if($session_data !== '')
|
|
{
|
|
return serialize($session_data);
|
|
}
|
|
return '';
|
|
}
|
|
|
|
/**
|
|
* 解码session
|
|
* @param string $session_buffer
|
|
* @return mixed
|
|
*/
|
|
public static function sessionDecode($session_buffer)
|
|
{
|
|
return unserialize($session_buffer);
|
|
}
|
|
|
|
/**
|
|
* 清除上下文
|
|
* @return void
|
|
*/
|
|
public static function clear()
|
|
{
|
|
self::$local_ip = self::$local_port = self::$client_ip = self::$client_port =
|
|
self::$client_id = self::$connection_id = self::$old_session = null;
|
|
}
|
|
|
|
/**
|
|
* 通讯地址到client_id的转换
|
|
* @return string
|
|
*/
|
|
public static function addressToClientId($local_ip, $local_port, $connection_id)
|
|
{
|
|
return bin2hex(pack('NnN', $local_ip, $local_port, $connection_id));
|
|
}
|
|
|
|
/**
|
|
* client_id到通讯地址的转换
|
|
* @return array
|
|
*/
|
|
public static function clientIdToAddress($client_id)
|
|
{
|
|
if(strlen($client_id) !== 20)
|
|
{
|
|
throw new \Exception("client_id $client_id is invalid");
|
|
}
|
|
return unpack('Nlocal_ip/nlocal_port/Nconnection_id' ,pack('H*', $client_id));
|
|
}
|
|
|
|
}
|
|
|
|
/**
|
|
* Gateway与Worker间通讯的二进制协议
|
|
*
|
|
* struct GatewayProtocol
|
|
* {
|
|
* unsigned int pack_len,
|
|
* unsigned char cmd,//命令字
|
|
* unsigned int local_ip,
|
|
* unsigned short local_port,
|
|
* unsigned int client_ip,
|
|
* unsigned short client_port,
|
|
* unsigned int connection_id,
|
|
* unsigned char flag,
|
|
* unsigned short gateway_port,
|
|
* unsigned int ext_len,
|
|
* char[ext_len] ext_data,
|
|
* char[pack_length-HEAD_LEN] body//包体
|
|
* }
|
|
* NCNnNnNCnN
|
|
*/
|
|
class GatewayProtocol
|
|
{
|
|
// 发给worker，gateway有一个新的连接
|
|
const CMD_ON_CONNECTION = 1;
|
|
|
|
// 发给worker的，客户端有消息
|
|
const CMD_ON_MESSAGE = 3;
|
|
|
|
// 发给worker上的关闭链接事件
|
|
const CMD_ON_CLOSE = 4;
|
|
|
|
// 发给gateway的向单个用户发送数据
|
|
const CMD_SEND_TO_ONE = 5;
|
|
|
|
// 发给gateway的向所有用户发送数据
|
|
const CMD_SEND_TO_ALL = 6;
|
|
|
|
// 发给gateway的踢出用户
|
|
const CMD_KICK = 7;
|
|
|
|
// 发给gateway，通知用户session更新
|
|
const CMD_UPDATE_SESSION = 9;
|
|
|
|
// 获取在线状态
|
|
const CMD_GET_ALL_CLIENT_INFO = 10;
|
|
|
|
// 判断是否在线
|
|
const CMD_IS_ONLINE = 11;
|
|
|
|
// client_id绑定到uid
|
|
const CMD_BIND_UID = 12;
|
|
|
|
// 解绑
|
|
const CMD_UNBIND_UID = 13;
|
|
|
|
// 向uid发送数据
|
|
const CMD_SEND_TO_UID = 14;
|
|
|
|
// 根据uid获取绑定的clientid
|
|
const CMD_GET_CLIENT_ID_BY_UID = 15;
|
|
|
|
// 加入组
|
|
const CMD_JOIN_GROUP = 20;
|
|
|
|
// 离开组
|
|
const CMD_LEAVE_GROUP = 21;
|
|
|
|
// 向组成员发消息
|
|
const CMD_SEND_TO_GROUP = 22;
|
|
|
|
// 获取组成员
|
|
const CMD_GET_CLINET_INFO_BY_GROUP = 23;
|
|
|
|
// 获取组成员数
|
|
const CMD_GET_CLIENT_COUNT_BY_GROUP = 24;
|
|
|
|
// worker连接gateway事件
|
|
const CMD_WORKER_CONNECT = 200;
|
|
|
|
// 心跳
|
|
const CMD_PING = 201;
|
|
|
|
// GatewayClient连接gateway事件
|
|
const CMD_GATEWAY_CLIENT_CONNECT = 202;
|
|
|
|
// 根据client_id获取session
|
|
const CMD_GET_SESSION_BY_CLIENT_ID = 203;
|
|
|
|
// 发给gateway，覆盖session
|
|
const CMD_SET_SESSION = 204;
|
|
|
|
// 包体是标量
|
|
const FLAG_BODY_IS_SCALAR = 0x01;
|
|
|
|
/**
|
|
* 包头长度
|
|
* @var integer
|
|
*/
|
|
const HEAD_LEN = 28;
|
|
|
|
public static $empty = array(
|
|
'cmd' => 0,
|
|
'local_ip' => 0,
|
|
'local_port' => 0,
|
|
'client_ip' => 0,
|
|
'client_port' => 0,
|
|
'connection_id' => 0,
|
|
'flag' => 0,
|
|
'gateway_port' => 0,
|
|
'ext_data' => '',
|
|
'body' => '',
|
|
);
|
|
|
|
/**
|
|
* 返回包长度
|
|
* @param string $buffer
|
|
* @return int return current package length
|
|
*/
|
|
public static function input($buffer)
|
|
{
|
|
if(strlen($buffer) < self::HEAD_LEN)
|
|
{
|
|
return 0;
|
|
}
|
|
|
|
$data = unpack("Npack_len", $buffer);
|
|
return $data['pack_len'];
|
|
}
|
|
|
|
/**
|
|
* 获取整个包的buffer
|
|
* @param array $data
|
|
* @return string
|
|
*/
|
|
public static function encode($data)
|
|
{
|
|
$flag = (int)is_scalar($data['body']);
|
|
if(!$flag)
|
|
{
|
|
$data['body'] = serialize($data['body']);
|
|
}
|
|
$ext_len = strlen($data['ext_data']);
|
|
$package_len = self::HEAD_LEN + $ext_len + strlen($data['body']);
|
|
return pack("NCNnNnNCnN", $package_len,
|
|
$data['cmd'], $data['local_ip'],
|
|
$data['local_port'], $data['client_ip'],
|
|
$data['client_port'], $data['connection_id'],
|
|
$flag, $data['gateway_port'],
|
|
$ext_len) . $data['ext_data'] . $data['body'];
|
|
}
|
|
|
|
/**
|
|
* 从二进制数据转换为数组
|
|
* @param string $buffer
|
|
* @return array
|
|
*/
|
|
public static function decode($buffer)
|
|
{
|
|
$data = unpack("Npack_len/Ccmd/Nlocal_ip/nlocal_port/Nclient_ip/nclient_port/Nconnection_id/Cflag/ngateway_port/Next_len", $buffer);
|
|
$data['local_ip'] = $data['local_ip'];
|
|
$data['client_ip'] = $data['client_ip'];
|
|
if($data['ext_len'] > 0)
|
|
{
|
|
$data['ext_data'] = substr($buffer, self::HEAD_LEN, $data['ext_len']);
|
|
if($data['flag'] & self::FLAG_BODY_IS_SCALAR)
|
|
{
|
|
$data['body'] = substr($buffer, self::HEAD_LEN + $data['ext_len']);
|
|
}
|
|
else
|
|
{
|
|
$data['body'] = unserialize(substr($buffer, self::HEAD_LEN + $data['ext_len']));
|
|
}
|
|
}
|
|
else
|
|
{
|
|
$data['ext_data'] = '';
|
|
if($data['flag'] & self::FLAG_BODY_IS_SCALAR)
|
|
{
|
|
$data['body'] = substr($buffer, self::HEAD_LEN);
|
|
}
|
|
else
|
|
{
|
|
$data['body'] = unserialize(substr($buffer, self::HEAD_LEN));
|
|
}
|
|
}
|
|
return $data;
|
|
}
|
|
}
|
|
|