WO2016155300A1 - 无线终端设备的远程控制系统及远程控制方法 - Google Patents

无线终端设备的远程控制系统及远程控制方法 Download PDF

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Publication number
WO2016155300A1
WO2016155300A1 PCT/CN2015/093009 CN2015093009W WO2016155300A1 WO 2016155300 A1 WO2016155300 A1 WO 2016155300A1 CN 2015093009 W CN2015093009 W CN 2015093009W WO 2016155300 A1 WO2016155300 A1 WO 2016155300A1
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Prior art keywords
long connection
terminal device
wireless terminal
remote control
server
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PCT/CN2015/093009
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English (en)
French (fr)
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陈宏亮
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上海斐讯数据通信技术有限公司
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Publication of WO2016155300A1 publication Critical patent/WO2016155300A1/zh

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L65/00Network arrangements, protocols or services for supporting real-time applications in data packet communication
    • H04L65/40Support for services or applications
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00Network arrangements or protocols for supporting network services or applications
    • H04L67/01Protocols
    • H04L67/02Protocols based on web technology, e.g. hypertext transfer protocol [HTTP]
    • H04L67/025Protocols based on web technology, e.g. hypertext transfer protocol [HTTP] for remote control or remote monitoring of applications
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L61/00Network arrangements, protocols or services for addressing or naming
    • H04L61/09Mapping addresses
    • H04L61/25Mapping addresses of the same type
    • H04L61/2503Translation of Internet protocol [IP] addresses
    • H04L61/256NAT traversal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2101/00Indexing scheme associated with group H04L61/00
    • H04L2101/60Types of network addresses
    • H04L2101/618Details of network addresses
    • H04L2101/622Layer-2 addresses, e.g. medium access control [MAC] addresses

Definitions

  • the present invention relates to a control technology of a wireless terminal device, and in particular to a remote control system and a remote control method for a wireless terminal device of a wireless terminal device.
  • the WiFi intelligent terminal management system needs to solve a very important technical problem, that is, how the user accesses and manages the WiFi terminal device in the home through the Internet through the APP. Because of the limitation of the network topology of the carrier, the WiFi terminal device is often located behind the NAT device, which is equivalent to being in a private network. That is to say, the public network needs to involve NAT traversal to manage the WiFi terminal device in the private network.
  • NAT Traversal - Network Address Translation is the process of converting an IP address in an IP packet header to another IP address.
  • NAT is mainly used to implement the function of a private network to access a public network. This way of using a small number of public IP addresses to represent more private IP addresses will help slow down the exhaustion of available IP address space.
  • the idea of solving the problem of penetrating NAT is that the terminal in the private network obtains the external address on the egress NAT through some mechanism, and then directly fills in the external address on the egress NAT in the address information filled in the payload, instead of the private network.
  • the private IP address of the internal terminal so that the content in the payload does not need to be modified when passing through the NAT, and only needs to convert the IP address of the packet header according to the normal NAT process, and the IP address information and the packet header in the payload.
  • the address information is consistent.
  • STUN-based solution the full name of STUN is Simple Traversal of UDP Through Network Address Translators, which is a simple way of UDP to NAT.
  • the application ie STUN CLIENT
  • STUN SERVER receives the request message and generates a response message.
  • the response message carries the source port of the request message, that is, the STUN CLIENT in the NAT. The corresponding external port.
  • the response message is sent to the STUN CLIENT through the NAT.
  • the STUN CLIENT knows the external address on the NAT by responding to the contents of the message body, and fills it into the UDP payload to inform the peer that the receiving address and port number of the local end are NAT. External address and port number.
  • the STUN mode does not support the traversal of the firewall. It does not support the Symmetric NAT type (in the enterprise network with high security requirements, the export NAT is usually of this type).
  • the transmission of the UDP packet based on the STUN protocol is not reliable, and the data cannot be guaranteed to reach the destination address, and there is no retransmission mechanism in case of failure.
  • the STUN CLIENT terminal In the STUN mode, in order to prevent the UDP link from automatically failing due to the minimum aging time of the NAT device, the STUN CLIENT terminal must periodically send the heartbeat packet within the minimum aging time, thereby increasing the STUN server in the case of a large number of terminals. The pressure even caused the server to crash.
  • the data calculation and the number of times of sending and receiving of the terminal are increased, which causes the operation module and the network module to be overloaded, which may cause the terminal to generate heat or reduce the service life of the relevant components of the terminal.
  • the STUN server In the STUN-based mode, when the cloud server checks whether the WiFi terminal is online, the STUN server needs to record the last time the WiFi terminal is sent or the STUN server sends a packet to check whether the terminal is online, and then notifies the cloud server of the result, and each check of the cloud service. This will increase the communication process and affect business performance.
  • the invention provides a remote control system and a remote control method for a wireless terminal device, which ensures that a service server can actively connect wireless intelligent terminals located behind various NATs, realize remote management of wireless intelligent terminals, and support symmetric network address translation types to ensure The reliability of data transmission does not require frequent heartbeat packets, reducing the pressure on the computing and network transmission of servers and wireless terminals.
  • the present invention provides a remote control system for a wireless terminal device, characterized in that the remote control system comprises:
  • each wireless terminal device establishes a long connection channel with a long connection server cluster, and a long connection server cluster generates a long connection for each long connection channel
  • the channel object and the long connection channel identifier are mapped, and the MAC address of the wireless terminal device is mapped to the corresponding long connection channel identifier, and the long connection channel object and the long connection channel identifier are mapped.
  • a command sending end the output of which controls a remote control command of the wireless terminal device, where the remote control command includes a MAC address of the designated wireless terminal device;
  • the cloud server is respectively connected to the long connection server cluster and the command sending end, receives the remote control command outputted by the command sending end, and outputs the remote control command and the corresponding long connection channel identifier to the long connection server cluster; the long connection server The cluster obtains the corresponding long connection channel object according to the long connection channel identifier, and sends the remote control command to the designated wireless terminal device through the long connection channel.
  • the above-mentioned command sending end is a mobile intelligent terminal or a computer, and the mobile intelligent terminal or computer is provided with an application for editing a remote control command.
  • the long connection server cluster includes a cluster LVS server and a plurality of long connection servers, and the long connection servers form a long connection server cluster through the cluster LVS server.
  • the remote control system of the wireless terminal device further includes: a message server provided with a distributed message system, the message server is respectively connected with the cloud server and the long connection server cluster, and the cloud server and the long connection server cluster perform messages through the distributed message system. Send and receive.
  • the remote control system of the wireless terminal device further includes a cache server that is respectively connected to the cloud server and the long connection server cluster, and the cache server stores a mapping relationship between the MAC address of the wireless terminal device and the long connection channel identifier corresponding to the wireless terminal device.
  • a remote control method for a remote control system of the above wireless terminal device characterized in that the remote control method comprises:
  • the wireless terminal device actively connects to the long connection server cluster to establish a long connection channel with the long connection server cluster;
  • the long connection server cluster establishes a mapping relationship between the MAC address of the wireless terminal device and the long connection channel identifier
  • the cloud server receives the remote control command, and sends the MAC address included in the remote control command and the mapped long connection channel identifier to the long connection server cluster;
  • the long connection server cluster selects the corresponding long connection channel according to the long connection channel identifier to send and receive remote control commands to the wireless terminal device.
  • the long connection identifier described above includes the long connection server IP and channel identifier.
  • the wireless terminal device Each time the wireless terminal device initializes, it actively connects to the long connection server cluster, and connects to the cluster LVS server of the long connection server cluster.
  • the cluster LVS server is responsible for load balancing, and distributes the connection request to each long connection of the long connection server cluster on average.
  • the connection information sent when the wireless terminal device is connected needs to include its own MAC address.
  • the wireless terminal device When the abnormality of the long connection server cluster causes the long connection channel to fail, the wireless terminal device automatically re-initiates the long connection periodically until the connection is successful.
  • the long-connection server cluster After receiving the connection message of the wireless terminal device, the long-connection server cluster establishes or updates a mapping relationship between the MAC address of the wireless terminal device and the long connection identifier in the cache server; the mapping relationship between the MAC address and the long connection identifier It is saved in the HashMap of Key-Value.
  • the Key is the MAC address and the Value is the long connection identifier.
  • the long connection server cluster After the long connection server cluster receives the long connection of the wireless terminal device, the long connection channel object is generated; after the long connection channel is generated, the long connection server cluster establishes or updates the mapping relationship between the long connection identifier and the long connection channel object in the own memory cache.
  • the mapping between the long connection identifier and the long connection channel object is saved in the HashMap of the Key-Value.
  • the Key is the long connection identifier and the Value is the long connection channel object.
  • the two ends of the long connection channel object are composed of the cluster LVS server IP and port and the public network IP and port of the wireless terminal device; the public network IP and port of the wireless terminal device are obtained through mapping by the network address translation device.
  • the long-connected server cluster senses the state of the wireless terminal device in real time. When the wireless terminal device is powered off or turned off, the long connection channel automatically fails.
  • the long-connected server cluster updates the MAC address and the long connection identifier of the wireless terminal device in its own cache. The mapping relationship between.
  • the cloud server receives the remote control command sent by the sending end of the command, and queries the long connection identifier of the mapping relationship in the cache server according to the MAC address of the specified wireless terminal device in the remote control command; and then the remote control command has a long relationship with the mapping relationship
  • the connection ID is sent to the long connection server cluster.
  • the long connection channel object that is queried in the cache according to the long connection identifier is used to send the remote control command to the wireless terminal device by using the long connection channel corresponding to the long connection channel object.
  • Both the cloud server and the long-connection server cluster both send and receive messages through a distributed message system, which is located in the message server.
  • the remote control system and the remote control method of the wireless terminal device of the present invention are superior to the prior art wireless terminal device remote control technology in that the wireless terminal device and the cloud service of the present invention
  • the wireless terminal device and the cloud service of the present invention Through the long connection of the server cluster, the reliable transmission mechanism of the TCP long connection is realized, and the asynchronous non-blocking communication transmission mode is used to implement the traversal of various NAT types, so that the service server can actively connect the wireless intelligent terminals located behind various NATs. It realizes remote management of wireless intelligent terminals, supports symmetric network address translation types, ensures the reliability of data transmission, does not need to send heartbeat packets frequently, and reduces the operation and network transmission pressure of servers and wireless terminals;
  • the long-connection server cluster of the present invention performs filtering according to the long connection server IP in the long connection identifier, so that only the long connection server that is consistent with the long connection server IP in the long connection identifier executes the received remote control command, and has high availability and high concurrency. mechanism;
  • the invention adopts a mapping relationship between a MAC address of a wireless terminal device and a long connection channel identifier in a long connection server cluster to implement caching and querying;
  • the wireless terminal device will automatically re-initiate the long connection periodically, and has a fault tolerance mechanism
  • the invention adopts the public network IP and port of the wireless terminal device after NAT mapping as one end of the long connection channel, and realizes traversing NAT;
  • the cloud server of the present invention and the long connection server perform distributed message communication through the message server, thereby improving the efficiency of message transmission and reception.
  • FIG. 1 is a system block diagram of a remote control system of a wireless terminal device of the present invention
  • FIG. 2 is a flowchart of a method for establishing a channel of a remote control system of a wireless terminal device according to the present invention
  • FIG. 3 is a flow chart of a method for transmitting an instruction of a remote control system of a wireless terminal device of the present invention.
  • an embodiment of a remote control system of a wireless terminal device includes: a long connection server cluster 103, an instruction sending end 101, a cloud server 102, a network address translation device 104, and a wireless terminal device. 105.
  • the wireless terminal device 105 can be a WIFI terminal.
  • the long connection server cluster 103 includes a cluster LVS server (Linux virtual server) and a number of long connection servers, and the long connection servers are connected by a cluster LVS server to form a long Connect to server cluster 103.
  • the persistent connection server cluster 103 communicatively connects a plurality of wireless terminal devices 105 through a network address translation device 104 (NAT device), and each wireless terminal device 105 establishes a long connection channel with the long connection server cluster 103, respectively.
  • the long connection server cluster 103 generates a long connection channel object and a long connection channel identifier for each long connection channel, and maps the MAC address of each wireless terminal device 105 to the long connection channel identifier corresponding to each wireless terminal device 105.
  • a long connection channel object of each long connection channel and a corresponding long connection channel identifier are also mapped.
  • a single long connection server can support more than 1 million long connection channels, indicating that it can support communication with more than 1 million WiFi terminals.
  • the long connection server can be horizontally expanded to reach a long connection channel of more than 10 million, which satisfies the requirements of the management system of the large-scale intelligent WiFi terminal.
  • the command transmitting end 101 employs a mobile intelligent terminal or computer having an application (APP) for editing a remote control command for controlling the wireless terminal device 105, and the mobile intelligent terminal can be a smart phone.
  • the command transmitting end 101 outputs a remote control command for controlling the wireless terminal device 105, the remote control command including the MAC address of the wireless terminal device 105 designated by the command transmitting end 101 to control.
  • APP application
  • the cloud server 102 is in communication with the long connection server cluster 103 and the command sending end 101, receives the remote control command outputted by the command sending end 101, and outputs the remote control command and its corresponding long connection channel identifier to the long connection server cluster 103;
  • the long connection server cluster 103 acquires the corresponding long connection channel object according to the long connection channel identifier, and transmits the remote control command to the designated wireless terminal device 105 through the long connection channel.
  • the remote control system of the wireless terminal device disclosed in this embodiment further includes a message server 106, and the message server 106 is provided with a distributed message system.
  • the message server 106 is in communication with the cloud server 102 and the persistent connection server cluster 103, respectively, and the cloud server 102 and the persistent connection server cluster 103 perform message transmission and reception through the distributed message system.
  • the remote control system of the wireless terminal device further includes a cache server 107, which is respectively connected to the cloud server 102 and the long connection server cluster 103.
  • the cache server 107 stores the MAC address of the wireless terminal device 105 and the wireless terminal device. The mapping relationship of the corresponding long connection channel identifiers of 105.
  • the invention also discloses a remote control method for a remote control system of a wireless terminal device, the far
  • the program control method comprises two parts, specifically: a channel establishment method of a remote control system of a wireless terminal device and an instruction transmission method of a remote control system of the wireless terminal device.
  • FIG. 2 it is a method flow of a channel establishment method of a remote control system of a wireless terminal device, and the channel establishment method includes the following steps:
  • Step 1.1 The wireless terminal device 105 is a client end of the TCP long connection, and actively connects to the persistent connection server cluster 103 each time it initializes, and establishes a long connection channel with the long connection server cluster 103.
  • the wireless terminal device 105 actively connects to the long connection server cluster every time it is initialized, and connects the cluster LVS server of the long connection server cluster 103, and the cluster LVS server is responsible for load balancing, and distributes the connection request to the long connection server cluster on average.
  • the connection information transmitted when the wireless terminal device 105 is connected needs to include its own MAC address.
  • the wireless terminal device 105 automatically re-initiates the long connection periodically until the connection is successful.
  • Step 1.2 The long connection server cluster 103 establishes a mapping relationship between the MAC address of the wireless terminal device 105 and the long connection channel identifier.
  • the long connection ID contains the long connection server IP and channel ID.
  • the persistent connection server cluster 103 establishes or updates a mapping relationship between the MAC address of the wireless terminal device 105 and the long connection identifier in the cache server 107 after receiving the connection message of the wireless terminal device.
  • the mapping between the MAC address and the long connection identifier is stored in the HashMap of the Key-Value.
  • the Key is the MAC address and the Value is the long connection identifier.
  • Step 1.3 The long connection server cluster 103 automatically generates a long connection channel object after receiving the long connection of the wireless terminal device 105.
  • the two ends of the long connection channel object are composed of the cluster LVS server IP and port and the public network IP and port of the wireless terminal device.
  • the public network IP and port of the wireless terminal device 105 are obtained through mapping of the network address translation device, where the public network IP and port of the wireless terminal device 105 are mapped by NAT.
  • the long connection server cluster 103 establishes or updates the mapping relationship between the long connection identifier and the long connection channel object in the own memory cache, and the mapping relationship between the long connection identifier and the long connection channel object is saved by using the Key-Value HashMap.
  • Key is a long connection identifier and Value is a long connection channel object.
  • the persistent connection server cluster 103 senses the wireless terminal device 105 in real time. In the state, when the wireless terminal device 106 is powered down or turned off, the long connection channel will automatically fail, and the long connection server cluster 103 updates the mapping relationship between the MAC address of the wireless terminal device 105 and the long connection identifier in its own cache.
  • FIG. 3 it is a method flow of an instruction transmission method of a remote control system of a wireless terminal device, and the instruction transmission method includes the following steps:
  • Step 2.1 The command sending end 101 sends a remote control command to the cloud server 102.
  • Step 2.2 The cloud server 102 receives the command, the sending end 101 sends a remote control command, and queries the cache server 107 to have a long connection identifier with a mapping relationship according to the MAC address of the wireless terminal device 105 specified in the remote control command.
  • Step 2.3 The cloud server 102 sends the remote control command to the persistent connection server cluster 103 together with the long connection identifier having the mapping relationship.
  • Step 2.4 When the remote connection server cluster 103 transmits the remote control instruction, the long connection channel object having the mapping relationship is queried in the cache according to the long connection identifier.
  • Step 2.5 The long connection server cluster 103 receives or sends a remote control command to the wireless terminal device by using the long connection channel corresponding to the long connection channel object.
  • both the cloud server 102 and the persistent connection server cluster both send and receive messages through a distributed messaging system located in the message server 106.

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

本发明公开一种无线终端设备的远程控制方法,包含:无线终端设备与长连接服务器集群建立长连接通道;长连接服务器集群建立无线终端设备的MAC地址与长连接通道标识的映射关系;云服务器将远程控制指令中包含的MAC地址与长连接通道标识发送至长连接服务器集群;长连接服务器集群根据长连接通道标识选择相应的长连接通道为无线终端设备收发远程控制指令。本发明的无线终端设备与云服务器通过长连接服务器集群,利用异步非阻塞式通信传输方式实现各种NAT类型的穿越,保证业务服务器主动连接位于各种NAT之后的无线智能终端,实现对无线智能终端的远程管理,支持对称网络地址转换类型,不用频繁发送心跳包,减轻运算与网络传输压力。

Description

无线终端设备的远程控制系统及远程控制方法 技术领域
本发明涉及无线终端设备的控制技术,具体涉及一种无线终端设备的无线终端设备的远程控制系统及远程控制方法。
背景技术
目前,WiFi智能终端管理系统需要解决一个很重要的技术问题,即用户如何通过APP通过Internet访问和管理家中的WiFi终端设备。因为受所属运营商网络拓扑的限制,WiFi终端设备往往位于NAT设备之后,相当于是一个私网内,也就是说公网要管理私网中的WiFi终端设备需要涉及到NAT穿越。
NAT穿越——NAT(Network Address Translation,网络地址转换)是将IP数据包头中的IP地址转换为另一个IP地址的过程。在实际应用中,NAT主要用于实现私有网络访问公共网络的功能。这种通过使用少量的公有IP地址代表较多的私有IP地址的方式,将有助于减缓可用的IP地址空间的枯竭。解决穿透NAT问题的思路是,私网中的终端通过某种机制预先得到出口NAT上的对外地址,然后在净载中所填写的地址信息直接填写出口NAT上的对外地址,而不是私网内终端的私有IP地址,这样净载中的内容在经过NAT时就无需被修改了,只需按普通NAT流程转换报文头的IP地址即可,净载中的IP地址信息和报文头地址信息是一致的。
另外,还有基于STUN的方案——STUN的全称是Simple Traversal of UDP Through Network Address Translators,即UDP对NAT的简单穿越方式。应用程序(即STUN CLIENT)向NAT外的业务服务器(STUN SERVER)通过UDP发送请求STUN消息,STUN SERVER收到请求消息,产生响应消息,响应消息中携带请求消息的源端口,即STUN CLIENT在NAT上对应的外部端口。然后响应消息通过NAT发送给STUN CLIENT,STUN CLIENT通过响应消息体中的内容得知其NAT上的外部地址,并将其填入UDP负载中,告知对端,本端的接收地址和端口号为NAT外部的地址和端口号。
采用基于STUN的方案的缺点如下:
STUN方式不支持对防火墙的穿越,不支持对称NAT(Symmetric NAT)类型(在安全性要求较高的企业网中,出口NAT通常是这种类型)穿越。
基于STUN协议的UDP包的传输并不可靠,不能保证数据到达目的地址,且失败的情况下并没有重发机制。
在STUN方式中,为了防止UDP链路由于超过NAT设备最小老化时间而自动失效,STUN CLIENT端必须在最小老化时间内周期性地发送心跳包,从而在终端数量比较多的情况下,增加STUN服务器的压力,甚至引起服务器崩溃。
对于STUN Client的终端,由于需要频繁的发送数据包,增加了终端的数据运算与收发次数,导致运算模块与网络模块运行负荷过重,可能导致终端发热或减少终端的相关组件的使用寿命。
基于STUN的方式,在云服务器检查WiFi终端是否在线时,STUN服务器需要记录WiFi终端的最后一次发包时间或由STUN服务器发包去检查终端是否在线,然后将结果通知云服务器,云服务的每次检查都会增加这样一次通信过程,影响业务性能。
发明内容
本发明提供一种无线终端设备的远程控制系统及远程控制方法,保证业务服务器可以主动连接位于各种NAT之后的无线智能终端,实现对无线智能终端的远程管理,支持对称网络地址转换类型,保证数据传输的可靠性,不用频繁发送心跳包,减轻服务器与无线终端的运算与网络传输压力。
为实现上述目的,本发明提供一种无线终端设备的远程控制系统,其特点是,该远程控制系统包含:
长连接服务器集群,其通过网络地址转换设备通信连接若干无线终端设备,每个无线终端设备分别与长连接服务器集群之间建立长连接通道,长连接服务器集群对每个长连接通道分别生成长连接通道对象和长连接通道标识,并将无线终端设备的MAC地址与其对应的长连接通道标识建立映射关系,将长连接通道对象和长连接通道标识建立映射关系;
指令发送端,其输出控制无线终端设备的远程控制指令,远程控制指令中包含有指定无线终端设备的MAC地址;
云服务器,其分别与长连接服务器集群和指令发送端通信连接,接收指令发送端输出的远程控制指令,并将该远程控制指令与其对应的长连接通道标识输出至长连接服务器集群;长连接服务器集群根据长连接通道标识获取对应的长连接通道对象,通过长连接通道将远程控制指令发送至指定无线终端设备。
上述指令发送端为移动智能终端或计算机,该移动智能终端或计算机设有编辑远程控制指令的应用程序。
上述长连接服务器集群包含集群LVS服务器和若干长连接服务器,若干该长连接服务器通过集群LVS服务器组成长连接服务器集群。
上述无线终端设备的远程控制系统还包含:设有分布式消息系统的消息服务器,该消息服务器分别与云服务器和长连接服务器集群通信连接,云服务器和长连接服务器集群通过分布式消息系统进行消息的收发。
上述无线终端设备的远程控制系统还包含分别与云服务器和长连接服务器集群通信连接的缓存服务器,缓存服务器中存储无线终端设备的MAC地址与该无线终端设备对应的长连接通道标识的映射关系。
一种上述无线终端设备的远程控制系统的远程控制方法,其特点是,该远程控制方法包含:
无线终端设备主动连接长连接服务器集群,建立与长连接服务器集群的长连接通道;
长连接服务器集群建立无线终端设备的MAC地址与长连接通道标识之间的映射关系;
云服务器接收远程控制指令,并将远程控制指令中包含的MAC地址与映射的长连接通道标识发送至长连接服务器集群;
长连接服务器集群根据长连接通道标识选择相应的长连接通道为无线终端设备收发远程控制指令。
上述长连接标识包含长连接服务器IP和通道标识。
上述无线终端设备每次初始化时主动连接长连接服务器集群,连接的是长连接服务器集群的集群LVS服务器,由集群LVS服务器负责负载均衡,平均的将连接请求分发到长连接服务器集群的各个长连接服务器中,无线终端设备连接时发送的连接信息需要包含自身的MAC地址。
上述长连接服务器集群的异常导致长连接通道失效时,无线终端设备自动周期性地重新发起长连接,直到连接成功为止。
上述长连接服务器集群每收到无线终端设备的连接消息后,在缓存服务器中建立或更新无线终端设备的MAC地址与长连接标识之间的映射关系;MAC地址与长连接标识之间的映射关系采用Key-Value的HashMap保存,Key为MAC地址,Value为长连接标识。
上述长连接服务器集群接受无线终端设备的长连接后就生成长连接通道对象;长连接通道生成后,长连接服务器集群在自身内存缓存中建立或更新长连接标识与长连接通道对象的映射关系,长连接标识与长连接通道对象的映射关系用Key-Value的HashMap保存,Key为长连接标识,Value为长连接通道对象。
上述长连接通道对象两端由集群LVS服务器IP和端口及无线终端设备的公网IP和端口组成;所述无线终端设备的公网IP和端口经过网络地址转换设备映射获得。
上述长连接服务器集群实时感知无线终端设备状态,当无线终端设备掉电或被关闭时,长连接通道会自动失效,长连接服务器集群在自身缓存中更新无线终端设备的MAC地址与长连接标识之间的映射关系。
上述云服务器接收指令发送端发送的远程控制指令,根据远程控制指令中指定无线终端设备的MAC地址在缓存服务器中查询得具有映射关系的长连接标识;然后将远程控制指令与具有映射关系的长连接标识一并发送至长连接服务器集群。
上述长连接服务器集群中只有与长连接标识中长连接服务器IP一致的长连接服务器才执行收到的远程控制指令。
上述长连接服务器集群传送远程控制指令时,根据长连接标识在自身缓存中查询得具有映射关系的长连接通道对象,利用长连接通道对象对应的长连接通道向无线终端设备发送远程控制指令。
上述云服务器和长连接服务器集群都通过分布式消息系统收发消息,该分布式消息系统位于消息服务器。
本发明无线终端设备的远程控制系统及远程控制方法和现有技术的无线终端设备远程控制技术相比,其优点在于,本发明的无线终端设备与云服务 器之间通过长连接服务器集群,实现TCP长连接的可靠传输机制,利用异步非阻塞式通信传输方式实现各种NAT类型的穿越,保证业务服务器可以主动连接位于各种NAT之后的无线智能终端,实现对无线智能终端的远程管理,支持对称网络地址转换类型,保证数据传输的可靠性,不用频繁发送心跳包,减轻服务器与无线终端的运算与网络传输压力;
本发明的长连接服务器集群根据长连接标识中长连接服务器IP进行过滤,使只有与长连接标识中长连接服务器IP一致的长连接服务器才执行收到的远程控制指令,具有的高可用性高并发机制;
本发明在长连接服务器集群中,采用无线终端设备的MAC地址与长连接通道标识符映射关系,实现高速缓存与查询;
本发明在长连接断开的情况下,无线终端设备将自动周期性地重新发起长连接,具有的容错机制;
本发明将经过NAT映射之后的无线终端设备公网IP和端口作为长连接通道一端,实现的穿越NAT;
本发明云服务器与长连接服务器之间通过消息服务器进行分布式的消息通信,提高消息收发效率。
附图说明
图1为本发明无线终端设备的远程控制系统的系统框图;
图2为本发明无线终端设备的远程控制系统的信道建立方法的流程图;
图3为本发明无线终端设备的远程控制系统的指令传输方法的流程图。
具体实施方式
以下结合附图,进一步说明本发明的具体实施例。
如图1所示,为一种无线终端设备的远程控制系统的实施例,该远程控制系统包含:长连接服务器集群103、指令发送端101、云服务器102、网络地址转换设备104、无线终端设备105,这里无线终端设备105可以为一种WIFI终端。
长连接服务器集群103包含集群LVS服务器(Linux虚拟服务器)和若干长连接服务器,若干该长连接服务器通过集群LVS服务器联系起来组成长 连接服务器集群103。该长连接服务器集群103通过网络地址转换设备104(NAT设备)通信连接若干无线终端设备105,每个无线终端设备105分别与长连接服务器集群103之间建立有长连接通道。长连接服务器集群103对每个长连接通道分别生成长连接通道对象和长连接通道标识,并将各个无线终端设备105的MAC地址与每一个无线终端设备105对应的长连接通道标识建立映射关系,还将每个长连接通道的长连接通道对象和相应的长连接通道标识建立映射关系。
单台长连接服务器可以支持100万个以上的长连接通道,表示可以支持与100万个以上的WiFi终端之间的通信。通过集群的方式还可以水平扩展长连接服务器,达到千万以上的长连接通道,满足大规模智能WiFi终端的管理系统的要求。
指令发送端101采用移动智能终端或计算机,该移动智能终端或计算机设有编辑用于控制无线终端设备105的远程控制指令的应用程序(APP),移动智能终端可以为智能手机。指令发送端101输出控制无线终端设备105的远程控制指令,该远程控制指令中包含有指令发送端101指定控制的无线终端设备105的MAC地址。
云服务器102分别与长连接服务器集群103和指令发送端101通信连接,接收指令发送端101输出的远程控制指令,并将该远程控制指令与其对应的长连接通道标识输出至长连接服务器集群103;长连接服务器集群103根据长连接通道标识获取对应的长连接通道对象,通过长连接通道将远程控制指令发送至指定的无线终端设备105。
进一步的,本实施例所公开的无线终端设备的远程控制系统还包含有消息服务器106,消息服务器106中设有分布式消息系统。消息服务器106分别与云服务器102和长连接服务器集群103通信连接,云服务器102和长连接服务器集群103通过分布式消息系统进行消息的收发。
无线终端设备的远程控制系统还包含有缓存服务器107,该缓存服务器107分别与云服务器102和长连接服务器集群103通信连接,缓存服务器107中存储有无线终端设备105的MAC地址与该无线终端设备105对应的长连接通道标识的映射关系。
本发明还公开一种无线终端设备的远程控制系统的远程控制方法,该远 程控制方法包含两部分,具体为:无线终端设备的远程控制系统的信道建立方法与无线终端设备的远程控制系统的指令传输方法。
如图2所示,为一种无线终端设备的远程控制系统的信道建立方法的方法流程,该信道建立方法包含以下步骤:
步骤1.1、无线终端设备105为TCP长连接的Client端,每次初始化时主动连接长连接服务器集群103,建立与长连接服务器集群103的长连接通道。
这里,无线终端设备105每次初始化时主动连接长连接服务器集群,连接的是长连接服务器集群103的集群LVS服务器,由集群LVS服务器负责负载均衡,平均的将连接请求分发到长连接服务器集群的各个长连接服务器中,无线终端设备105连接时发送的连接信息需要包含自身的MAC地址。
如果当长连接服务器集群103的异常导致长连接通道失效时,无线终端设备105自动周期性地重新发起长连接,直到连接成功为止。
步骤1.2、长连接服务器集群103建立无线终端设备105的MAC地址与长连接通道标识之间的映射关系。长连接标识包含长连接服务器IP和通道标识。
具体的,长连接服务器集群103每收到无线终端设备的连接消息后,在缓存服务器107中建立或更新无线终端设备105的MAC地址与长连接标识之间的映射关系。MAC地址与长连接标识之间的映射关系采用Key-Value的HashMap保存,Key为MAC地址,Value为长连接标识。
步骤1.3、长连接服务器集群103接受无线终端设备105的长连接后就自动生成长连接通道对象,长连接通道对象两端由集群LVS服务器IP和端口及无线终端设备的公网IP和端口组成。无线终端设备105的公网IP和端口经过网络地址转换设备映射获得,此处无线终端设备105的公网IP和端口经过NAT映射而来。
长连接通道生成后,长连接服务器集群103在自身内存缓存中建立或更新长连接标识与长连接通道对象的映射关系,长连接标识与长连接通道对象的映射关系用Key-Value的HashMap保存,Key为长连接标识,Value为长连接通道对象。
在长连接通道生成后,长连接服务器集群103实时感知无线终端设备105 状态,当无线终端设备106掉电或被关闭时,长连接通道会自动失效,长连接服务器集群103在自身缓存中更新无线终端设备105的MAC地址与长连接标识之间的映射关系。
如图3所示,为一种无线终端设备的远程控制系统的指令传输方法的方法流程,该指令传输方法包含以下步骤:
步骤2.1、指令发送端101发送远程控制命令给云服务器102。
步骤2.2、云服务器102接收指令发送端101发出远程控制指令,根据远程控制指令中指定无线终端设备105的MAC地址在缓存服务器107中查询得具有映射关系的长连接标识。
步骤2.3、云服务器102将远程控制指令与具有映射关系的长连接标识一并发送至长连接服务器集群103。
长连接服务器集群103中只有与长连接标识中长连接服务器IP一致的长连接服务器才执行收到的远程控制指令。
步骤2.4、长连接服务器集群103传送远程控制指令时,根据长连接标识在自身缓存中查询得具有映射关系的长连接通道对象。
步骤2.5、长连接服务器集群103利用长连接通道对象对应的长连接通道为无线终端设备收取或发送远程控制指令。
另外,云服务器102和长连接服务器集群都通过位于消息服务器106中的分布式消息系统收发消息。
尽管本发明的内容已经通过上述优选实施例作了详细介绍,但应当认识到上述的描述不应被认为是对本发明的限制。在本领域技术人员阅读了上述内容后,对于本发明的多种修改和替代都将是显而易见的。因此,本发明的保护范围应由所附的权利要求来限定。

Claims (10)

  1. 一种无线终端设备的远程控制系统,其特征在于,该远程控制系统包含:
    长连接服务器集群,其通过网络地址转换设备通信连接若干无线终端设备,每个无线终端设备分别与长连接服务器集群之间建立长连接通道,长连接服务器集群对每个长连接通道分别生成长连接通道对象和长连接通道标识,并将无线终端设备的MAC地址与其对应的长连接通道标识建立映射关系,将长连接通道对象和长连接通道标识建立映射关系;
    指令发送端,其输出控制无线终端设备的远程控制指令,远程控制指令中包含有指定无线终端设备的MAC地址;
    云服务器,其分别与长连接服务器集群和指令发送端通信连接,接收指令发送端输出的远程控制指令,并将该远程控制指令与其对应的长连接通道标识输出至长连接服务器集群;长连接服务器集群根据长连接通道标识获取对应的长连接通道对象,通过长连接通道将远程控制指令发送至指定无线终端设备。
  2. 如权利要求1所述的无线终端设备的远程控制系统,其特征在于,所述指令发送端为移动智能终端或计算机,该移动智能终端或计算机设有编辑远程控制指令的应用程序。
  3. 如权利要求1所述的无线终端设备的远程控制系统,其特征在于,所述无线终端设备的远程控制系统还包含:设有分布式消息系统的消息服务器,该消息服务器分别与云服务器和长连接服务器集群通信连接,云服务器和长连接服务器集群通过分布式消息系统进行消息的收发。
  4. 如权利要求1所述的无线终端设备的远程控制系统,其特征在于,所述无线终端设备的远程控制系统还包含分别与云服务器和长连接服务器集群通信连接的缓存服务器,缓存服务器中存储无线终端设备的MAC地址与该无线终端设备对应的长连接通道标识的映射关系。
  5. 一种如权利要求1至4中任意一项权利要求所述无线终端设备的远程控制系统的远程控制方法,其特征在于,该远程控制方法包含:
    无线终端设备主动连接长连接服务器集群,建立与长连接服务器集群的长连接通道;
    长连接服务器集群建立无线终端设备的MAC地址与长连接通道标识之间的映射关系;长连接通道标识包含长连接服务器IP和通道标识;
    云服务器接收远程控制指令,并将远程控制指令中包含的MAC地址与映射的长连接通道标识发送至长连接服务器集群;
    长连接服务器集群根据长连接通道标识选择相应的长连接通道为无线终端设备收发远程控制指令。
  6. 如权利要求5所述的远程控制方法,其特征在于,所述无线终端设备每次初始化时主动连接长连接服务器集群,连接的是长连接服务器集群的集群LVS服务器,由集群LVS服务器负责负载均衡,平均的将连接请求分发到长连接服务器集群的各个长连接服务器中,无线终端设备连接时发送的连接信息需要包含自身的MAC地址;
    所述长连接服务器集群的异常导致长连接通道失效时,无线终端设备自动周期性地重新发起长连接,直到连接成功为止。
  7. 如权利要求5所述的远程控制方法,其特征在于,所述长连接服务器集群每收到无线终端设备的连接消息后,在缓存服务器中建立或更新无线终端设备的MAC地址与长连接标识之间的映射关系;MAC地址与长连接标识之间的映射关系采用Key-Value的HashMap保存,Key为MAC地址,Value为长连接标识;
    所述长连接服务器集群实时感知无线终端设备状态,当无线终端设备掉电或被关闭时,长连接通道会自动失效,长连接服务器集群在自身缓存中更新无线终端设备的MAC地址与长连接标识之间的映射关系。
  8. 如权利要求5所述的远程控制方法,其特征在于,所述长连接服务器集群接受无线终端设备的长连接后就生成长连接通道对象;长连接通道生成后,长连接服务器集群在自身内存缓存中建立或更新长连接标识与长连接通道对象的映射关系,长连接标识与长连接通道对象的映射关系用Key-Value的HashMap保存,Key为长连接标识,Value为长连接通道对象;
    所述长连接通道对象两端由集群LVS服务器IP和端口及无线终端设备的公网IP和端口组成;所述无线终端设备的公网IP和端口经过网络地址转换设备映射获得。
  9. 如权利要求5所述的远程控制方法,其特征在于,所述云服务器接收指令发送端发送的远程控制指令,根据远程控制指令中指定无线终端设备的MAC地址在缓存服务器中查询得具有映射关系的长连接标识;然后将远程控制指令与具有映射关系的长连接标识一并发送至长连接服务器集群;
    所述长连接服务器集群中只有与长连接标识中长连接服务器IP一致的长连接服务器才执行收到的远程控制指令。
  10. 如权利要求5所述的远程控制方法,其特征在于,所述云服务器和长连接服务器集群都通过分布式消息系统收发消息,该分布式消息系统位于消息服务器。
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