WO2015188601A1 - 一种虚拟桌面实现组播的方法及装置 - Google Patents

一种虚拟桌面实现组播的方法及装置 Download PDF

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WO2015188601A1
WO2015188601A1 PCT/CN2014/093603 CN2014093603W WO2015188601A1 WO 2015188601 A1 WO2015188601 A1 WO 2015188601A1 CN 2014093603 W CN2014093603 W CN 2014093603W WO 2015188601 A1 WO2015188601 A1 WO 2015188601A1
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multicast
spice
data
virtual machine
current
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PCT/CN2014/093603
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English (en)
French (fr)
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王长征
修文飞
陈佩文
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中兴通讯股份有限公司
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/02—Details
    • H04L12/16—Arrangements for providing special services to substations
    • H04L12/18—Arrangements for providing special services to substations for broadcast or conference, e.g. multicast

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  • the present invention relates to, but is not limited to, the field of cloud computing server stand-alone virtualization technology, and in particular, to a method and device for implementing multicast by a virtual desktop.
  • Cloud computing has been listed as a strategic emerging industry supported by China's “Twelfth Five-Year Plan”.
  • Virtual desktops are one of the earliest projects in the cloud computing industry. The scale of application is huge, and market demand is in a blowout state.
  • desktop virtualization services have begun to flourish in China, including operators, universities, governments, and enterprises all adopting desktop virtualization technology to replace the use of traditional PCs.
  • VDI Virtual Desktop Infrastructure
  • VDI is a server-based computing model. All desktop virtual machines are managed and managed in the data center, and the operating system and applications are stored in a unified manner. In the server and storage device of the data center, a virtual machine pool is established in the background to provide different users and different terminals, so that users can obtain a complete PC experience.
  • VDI is a revolution in enterprise IT architecture that brings the mobile computing experience to meet the needs of many specific industries.
  • SPICE Simple Protocol for Independent Computing Environment
  • SPICE can extend virtual desktops deployed on servers and remote computers, similar to other rendering remote protocols for remote desktop management, such as Microsoft's RDP (Remote Desktop Protocol) protocol or Citrix's ICA (Independent Computing Architecture, Independent Computing Architecture). It supports virtual machine instances such as Windows XP, Windows 7, and Red Hat Enterprise Linux.
  • the SPICE protocol consists of three components:
  • SPICE Driver SPICE driver, a component that exists within each virtual desktop
  • SPICE Device The SPICE server, a component that exists within the virtualized hypervisor;
  • SPICE Client A SPICE client, a component that resides on a terminal device and can be a thin client or a dedicated PC for accessing each virtual desktop.
  • SPICE SPICE
  • the field of education is an important field of use for virtual desktops. It has the characteristics of relatively single application, few peripherals, centralized use, and easy promotion. It is very suitable for promoting virtual desktop products, but education, especially universities and primary and secondary schools, requires teaching demonstrations. Other functions, such as the teacher's presentation on the platform, students can directly see the teacher's operation through the virtual desktop of the station. That is, a virtual desktop needs to be shared with hundreds of users at the same time. If the traditional unicast mode is used to allow multiple users to access the same virtual desktop, it will inevitably cause great bandwidth and performance demand pressure on the server side of the virtual desktop. This scenario is a challenge to the existing VDI virtual desktop architecture, which directly affects the promotion of virtual desktops in education.
  • the embodiment of the invention provides a method and a device for implementing multicast on a virtual desktop, which solves the problem that the server of the virtual desktop causes a large bandwidth and performance demand pressure.
  • a method for implementing multicast by a virtual desktop including the following steps:
  • SPICE server multicasts the current desktop video data, audio data and mouse data of the virtual machine
  • the SPICE server pushes the current desktop video data of the multicast virtual machine, the current audio data of the virtual machine, and the current mouse data of the virtual machine as multicast data to the SPICE client that has joined the multicast group, so that the SPICE is enabled.
  • the virtual desktop connected to the client implements multicast.
  • the current desktop video data of the multicast virtual machine, the current audio data of the virtual machine, and the current mouse data of the virtual machine are all smaller than a maximum value of a User Datagram Protocol UDP packet.
  • the SPICE server sends the current desktop video data of the virtualized virtual machine, the current audio data of the virtual machine, and the current mouse data of the virtual machine as multicast data to the SPICE that has joined the multicast group.
  • Clients include:
  • the SPICE server receives a connection establishment request sent by the SPICE client
  • the SPICE server sends, to the SPICE client, initialization information and multiple multicast group addresses to be joined by the SPICE client according to the received connection establishment request;
  • the SPICE server adds the SPICE client to the multicast group corresponding to the multiple multicast group addresses, so as to push the multicast data to the SPICE client.
  • the initialization information includes:
  • Initialization information of current desktop video data initialization information of current audio data, and initialization information of current mouse data.
  • the sending the initialization information to the SPICE client and the multiple multicast group addresses to be joined by the SPICE client include:
  • the SPICE client receives the initialization information and multiple multicast group addresses to be joined;
  • the SPICE client respectively completes initialization operations of the current desktop video data, current audio data, and current mouse data according to the initialization information
  • the SPICE client is added to the corresponding multicast group according to the received multiple multicast group addresses, so as to receive the multicast data pushed by the SPICE client.
  • a method for implementing multicast by a virtual desktop including the following steps performed by a client:
  • the SPICE client sends a request to establish a connection to the SPICE server, and receives and saves multiple multicast group addresses sent by the SPICE server;
  • the SPICE client joins the multicast group address corresponding to the multiple multicast group addresses, and receives the current desktop video data of the multicast virtual machine that is pushed by the SPICE server, and the current audio data of the virtual machine. And multicast data of the current mouse data of the virtual machine.
  • a SPICE server including the following modules:
  • the multicast module is configured to: multicast the current desktop video data of the virtual machine, the current audio data of the virtual machine, and the current mouse data of the virtual machine respectively;
  • Push module set to: the current desktop video data of the virtual machine that has been multicast, virtual The current audio data of the machine and the current mouse data of the virtual machine are pushed as multicast data to the SPICE client that has joined the multicast group, so that the virtual desktop accessed by the SPICE client implements the multicast function.
  • the current desktop video data of the multicast virtual machine, the current audio data of the virtual machine, and the current mouse data of the virtual machine are all smaller than a maximum value of a User Datagram Protocol UDP packet.
  • the pushing module includes:
  • Establishing a connection request unit configured to: receive a connection establishment request sent by the SPICE client;
  • the sending unit is configured to: send, according to the received connection establishment request, initialization information to the SPICE client, and multiple multicast group addresses to be joined by the SPICE client;
  • the multicast group unit is configured to: add the SPICE client to the multicast group corresponding to the multiple multicast addresses, so as to push the multicast data to the SPICE client.
  • a SPICE client including the following modules:
  • Obtaining a multicast group address module configured to: receive and save multiple multicast group addresses sent by the SPICE server by sending a connection establishment request to the SPICE server;
  • the receiving module is configured to: add the SPICE client to the multicast group address corresponding to the multicast address, and receive the current desktop video data and the virtual machine of the multicast virtual machine that is pushed by the SPICE server. The current audio data and the multicast data of the current mouse data of the virtual machine.
  • the embodiments of the present invention can expand the application of virtual desktops in the field of education and similar scenarios, save user input, improve user experience, and have good demonstration significance for the promotion of virtual desktops based on VDI architecture and SPICE transmission protocol.
  • FIG. 1 is a flowchart of a method for implementing multicast by a virtual desktop according to an embodiment of the present invention
  • FIG. 2 is a schematic diagram of an apparatus for implementing multicast on a virtual desktop according to an embodiment of the present invention
  • FIG. 3 is a network diagram of a virtual desktop based on a VDI framework and a SPICE transmission protocol according to an embodiment of the present invention
  • SPICE server SPICE Device
  • FIG. 5 is a schematic diagram of an overall design of a SPICE Client (SPICE client) according to an embodiment of the present invention
  • FIG. 6 is a flow chart of establishing a multicast client and a server according to an embodiment of the present invention.
  • the embodiment of the invention is based on the VDI framework and the SPICE transmission protocol, and the transformation of the SPICE Device and the SPICE Client, together with the control of the operation and maintenance management module, efficiently completes the multicast function of the virtual desktop, so that the consumption of the virtual desktop is enabled.
  • the use of a virtual desktop can complete the teaching work, and can improve the user experience of the teaching demonstration scene, while saving computing and storage resources, increasing the number of concurrent multicast servers, and reducing the impact on network bandwidth.
  • the system provides a complete operation and maintenance system to complete the management of the multicast virtual desktop.
  • FIG. 1 is a flowchart of a method for implementing multicast by a virtual desktop according to an embodiment of the present invention. As shown in FIG. 1 , the method includes the following steps:
  • Step S101 Simple Protocol Independent Computing Environment
  • the SPICE server multicasts the current desktop video data of the virtual machine.
  • Step S102 The SPICE server multicasts the current audio data of the virtual machine.
  • Step S103 The SPICE server multicasts the current mouse data of the virtual machine.
  • Step S104 The SPICE server pushes the current desktop video data of the virtual machine that has been multicast, the current audio data of the virtual machine, and the current mouse data of the virtual machine as multicast data to the SPICE client that has joined the multicast group, so that the SPICE client sends the multicast data to the SPICE client that has joined the multicast group.
  • the virtual desktop accessed by the SPICE client implements a multicast function.
  • the current desktop video data, the current audio data of the virtual machine, and the current mouse data of the virtual machine of the multicast virtual machine according to the embodiment of the present invention are all smaller than the maximum value of a user datagram protocol UDP packet.
  • the SPICE server uses the current desktop video data of the virtual machine that has been multicasted, Pushing the current audio data of the virtual machine and the current mouse data of the virtual machine as multicast data to the SPICE client that has joined the multicast group includes: the SPICE server receives a connection establishment request sent from the SPICE client; The SPICE server sends, to the SPICE client, initialization information and multiple multicast group addresses to be joined by the SPICE client according to the received connection establishment request; the SPICE server according to the multiple multicast groups The address joins the SPICE client to the corresponding multicast group to push the multicast data to the SPICE client.
  • the initialization information includes: initialization information of the current desktop video data, initialization information of the current audio data, and initialization information of the current mouse data.
  • the sending the initialization information to the SPICE client and the multiple multicast group addresses to be joined by the SPICE client include: the SPICE client receiving the initialization information and multiple groups to be joined a paging group address; the SPICE client respectively completes an initialization operation of the current desktop video data, current audio data, and current mouse data according to the initialization information; after the SPICE client completes the initialization operation, according to the The received multiple multicast group addresses are respectively added to the corresponding multicast group to receive the multicast data pushed by the SPICE client.
  • the embodiment of the present invention further includes the following steps performed by the client: the SPICE client receives and saves a plurality of multicast group addresses sent by the SPICE server by sending a connection establishment request to the SPICE server; the SPICE client receives according to the received Multiple multicast group addresses are added to the corresponding multicast group address, and receive the current desktop video data of the multicast virtual machine pushed from the SPICE server, the current audio data of the virtual machine, and the current virtual machine. Multicast data for mouse data.
  • the server includes a server 201 and a client 202.
  • the server includes a multicast module 2011, and is configured as: The current desktop video data of the virtual machine, the current audio data of the virtual machine, and the current mouse data of the virtual machine are respectively multicasted; the push module 2012 is set to: the current desktop video data and the virtual machine of the virtual machine that has been multicasted.
  • the current audio data and the current mouse data of the virtual machine are pushed to the SPICE client that has joined the multicast group as multicast data, so that the virtual desktop accessed by the SPICE client implements a multicast function;
  • the client 202 includes
  • the receiving multicast group address module 2021 is configured to: receive and save multiple multicast group addresses sent by the SPICE server by sending a request for establishing a connection to the SPICE server; and the receiving module 2022 is configured to: according to the received The multicast group address is added to the corresponding multicast group address, and receives the current desktop video data of the multicast virtual machine pushed by the SPICE server, the current audio data of the virtual machine, and the current mouse data of the virtual machine. Multicast data.
  • the push module 202 includes: a connection establishment request unit, configured to: receive a connection establishment request sent by the SPICE client, and send a unit, configured to: according to the received connection establishment request, to the SPICE
  • the client sends the initialization information and the multiple multicast group addresses to be joined by the SPICE client; the multicast group unit is added, and the SPICE client is added to the corresponding group according to the multiple multicast group addresses.
  • the multicast data is pushed to the SPICE client.
  • the current desktop video data, the current audio data of the virtual machine, and the current mouse data of the virtual machine of the multicast virtual machine according to the embodiment of the present invention are all smaller than the maximum value of a user datagram protocol UDP packet.
  • the initialization information includes: initialization information of current desktop video data, initialization information of current audio data, and initialization information of current mouse data.
  • FIG. 3 is a schematic diagram of a virtual desktop network based on a VDI framework and a SPICE transmission protocol according to an embodiment of the present invention.
  • the method includes: a SPICE client (SPICE Client) 301 running on a terminal device and configured as : Accessing each virtual desktop, implementing the multicast function requires client transformation; SPICE server 302, running in the virtualized hypervisor, implementing the multicast function requires server transformation; SPICE driver (SPICE) Driver) 303, a component running inside the virtual desktop, mainly contains some common drivers, agents and other functions.
  • SPICE Client SPICE client
  • SPICE server 302 running in the virtualized hypervisor, implementing the multicast function requires server transformation
  • SPICE driver (SPICE) Driver) 303 a component running inside the virtual desktop, mainly contains some common drivers, agents and other functions.
  • FIG 4 shows the overall design of the SPICE Device (SPICE server) provided by the embodiment of the present invention.
  • SPICE server that is, the SPICE Device
  • four multicast modules are added to the SPICE server (that is, the SPICE Device), which are respectively set to: The current desktop display data, audio data, and mouse data are multicasted, and the control function of the multicast client is implemented.
  • the dashed box in the figure is the added four multicast modules, which are the multicast module 401 of the display channel, the multicast module 402 of the audio channel, the multicast module 403 of the cursor channel, and the multicast control channel.
  • Module 404 The multicast module 401 of the display channel is configured to multicast the current desktop display data of the virtual machine.
  • the system uses a UDP (User Datagram Protocol) to include a complete drawing command, which saves the client's reorganization operation.
  • UDP User Datagram Protocol
  • the specific implementation is to display and display the latest image data on the server at a rate of 12 frames per second, and cut the surface image into multiple small blocks, each of which is smaller than the maximum size of one UDP packet. Value, then group these small pieces into pairs
  • the corresponding drawing information is sent to the client. After receiving the corresponding drawing information, the client can draw in the window without reorganization.
  • the multicast module 402 of the audio channel is configured to multicast the current audio data of the virtual machine.
  • the audio data message is smaller than the maximum value of a single UDP packet, and there is no UDP packet reassembly problem.
  • the message can be multicast again in the original SPICE transmission process.
  • the multicast channel 403 of the mouse channel is set to multicast the current mouse data of the virtual machine.
  • the mouse data message is smaller than the maximum value of a single UDP packet, and there is no UDP packet reassembly problem.
  • the message can be multicast again in the original SPICE transmission process.
  • the multicast control channel module 404 is configured to implement a control function on the multicast client.
  • the multicast control channel module 404 adds a thread pool with 10 daemon threads. Each thread can maintain a connection of up to 30 multicast clients. Each thread in the thread pool is guarded by a semaphore, whenever an event occurs.
  • the main thread puts the corresponding message in the message queue of each thread, the semaphore of each thread is activated in turn, and after the thread is activated, the event is taken out from the respective message queue and processed.
  • the Spice server accepts the connection request of the multicast client, the client is added to a thread in the thread pool that maintains the smallest number of clients, ensuring load balancing among the threads.
  • FIG. 5 shows the overall design of the SPICE Client (SPICE client) provided by the embodiment of the present invention.
  • SPICE client three modules are added to the SPICE client (SPICE Client device) to complete the cooperation with the server.
  • the dashed box in the figure is the added three modules, which are a Control Channel module 501, a Multicast Peer module 502, and a Multicast Channel module 503.
  • the Control Channel module 501 completes the link preservation with the server, times the heartbeat, and obtains the control information of the server. That is to say, it is used for initializing communication with the spice server, obtaining necessary initialization information, and then saving the connection with the server, timing the heartbeat and obtaining the control information of the server end.
  • the Multicast Peer module 502 is responsible for establishing a pair of socket pairs, and communicating between the multicast daemon threads and the corresponding channel threads to complete message interaction.
  • the Multicast Channel module 503 is configured to acquire a multicast address and create a new daemon thread, join the corresponding multicast group, and receive multicast information of the server. That is to say, according to each multicast address obtained, a daemon thread is started, and the corresponding multicast group is added to receive the multicast information of the server.
  • FIG. 6 shows a process of establishing a multicast client and a server according to an embodiment of the present invention. As shown in FIG. 6, the method includes the following steps:
  • Step S601 The SPICE client sends a connection establishment request to the SPICE server.
  • Step S602 The SPICE server determines, according to the received request, whether a connection should be established.
  • Step S603 The SPICE server allows to establish a connection, and returns initialization information, where the information includes video, mouse, audio initialization information and a multicast group address that the client needs to join;
  • Step S604 The SPICE server broadcasts a data packet to the router.
  • Step S605 The SPICE client initializes the video, the mouse, and the audio channel according to the information returned by the server, and joins the corresponding multicast group to start accepting data and processing;
  • Step S606 The SPICE client receives the corresponding broadcast data packet through the router.
  • Step S607 The SPICE server adds the client to the multicast group, and updates the background data to facilitate management of the multicast group member.
  • Step S608 The SPICE client establishes a control channel with the SPICE server, and periodically monitors and processes the control information.
  • the modified SPICE transmission protocol when the user needs to use the multicast function, the SPICE server needs to send a packet to the special multicast user group, and the user in the multicast group can be free. Copy this message. In this case, no matter how many people increase the number of recipients, the server needs to send only one message, and only one message is transmitted on the network.
  • Multicast management is implemented by adding a set of operation and maintenance management and configuration systems, such as multicast virtual desktop management, multicast virtual desktop switching, and multicast client management.
  • the method and device for implementing multicast based on the virtual desktop of the VDI framework and the SPICE transmission protocol are:
  • the operation and maintenance management system can conveniently manage the multicast virtual desktop. Before class, teachers can easily manage multicast objects, switch between multicast desktops, etc., and improve the utilization of teaching resources.
  • all or part of the steps of the above embodiments may also be implemented by using an integrated circuit. These steps may be separately fabricated into individual integrated circuit modules, or multiple modules or steps may be fabricated into a single integrated circuit module. achieve. Thus, the invention is not limited to any specific combination of hardware and software.
  • the devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.
  • each device/function module/functional unit in the above embodiment When each device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium.
  • the above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • the embodiment of the invention can effectively meet the requirements of the virtual desktop in teaching in the education field, save user resources, meet the requirements of users to quickly switch virtual desktops, etc., and is a distinctive highlight function for the virtual desktop in the field of education. Promotion, play a good demonstration role.

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Abstract

一种虚拟桌面实现组播的方法及装置，涉及云计算服务器单机虚拟化技术领域，其方法包括以下步骤：简单协议独立计算环境SPICE服务端将虚拟机当前的桌面视频数据、音频数据和鼠标数据进行组播；所述SPICE服务端将已进行组播的虚拟机当前的桌面视频数据、虚拟机当前的音频数据和虚拟机当前的鼠标数据作为组播数据推送给已加入组播组的SPICE客户端，使所述SPICE客户端所接入的虚拟桌面实现组播功能。

Description

一种虚拟桌面实现组播的方法及装置 技术领域
本发明涉及但不限于云计算服务器单机虚拟化技术领域，特别涉及一种虚拟桌面实现组播的方法及装置。
背景技术
云计算被中国“十二五”规划列为重点扶持的战略新兴产业，虚拟桌面作为云计算产业中落地最早的项目之一，应用规模巨大，市场需求处于井喷状态。近年来，桌面虚拟化业务在国内开始蓬勃发展，包括运营商、众多高校、政府、企业均陆续采用桌面虚拟化技术来替代传统PC的使用。
目前桌面虚拟化主要采用VDI(Virtual Desktop Infrastructure，虚拟桌面架构)，VDI是一种基于服务器的计算模型，将所有桌面虚拟机在数据中心进行托管并统一管理，将操作系统及应用程序统一存放在数据中心的服务器及存储设备中，后台建立虚拟机池，提供给不同用户和不同终端，使用户能够获得完整PC的使用体验。毫无疑问，VDI是企业IT架构的一次革命，带来移动计算体验的同时，满足了很多特定行业的需要。
SPICE(Simple Protocol for Independent Computing Environment，简单协议独立计算环境)是一种开源虚拟化推送协议，能够提供与物理桌面完全相同的最终用户体验。SPICE能拉远部署在服务器和远程计算机上的虚拟桌面，它类似于其他用于远程桌面管理的渲染拉远协议，如微软的RDP(Remote Desktop Protocol，远程桌面协议)协议或Citrix的ICA(Independent Computing Architecture，独立计算结构)协议。它支持Windows XP、Windows7和Red Hat Enterprise Linux等虚拟机实例，SPICE协议包含有3个组件：
SPICE Driver：SPICE驱动器，存在于每个虚拟桌面内的组件；
SPICE Device：SPICE服务端，存在于虚拟化Hypervisor内的组件；
SPICE Client：SPICE客户端，存在于终端设备上的组件，可以是瘦客户机或专用的PC，用于接入每个虚拟桌面。
SPICE的这三个组件协作运行，以能够最大程度改善用户体验并降低系统负荷。由于SPICE协议具有分“通道”传输数据、提供QoS控制、独立于GuestOS、支持丰富的外设等特点，正在快速的发展，应用前景广阔。
教育领域是虚拟桌面的一个重要使用领域，具有应用相对单一，外设少，使用集中，便于推广等特点，非常适合推广虚拟桌面产品，但是教育领域，特别是高校以及中小学校，要求具备教学演示等功能，如教师在讲台演示，学生通过机位的虚拟桌面就可以直接看到老师的操作。即一个虚拟桌面需要同时共享给成百个用户使用，如果采用传统的单播模式让多个用户接入同一个虚拟桌面，必然对虚拟桌面的服务端造成很大的带宽及性能需求压力，这种场景对现有的VDI虚拟桌面构架是个挑战，此问题直接影响了虚拟桌面在教育领域的推广。
发明内容
本发明实施例提供一种虚拟桌面实现组播的方法及装置，解决了相关技术中对虚拟桌面的服务端造成很大带宽及性能需求压力的问题。
根据本发明的一个实施例，提供了一种虚拟桌面实现组播的方法，包括以下步骤：
简单协议独立计算环境SPICE服务端将虚拟机当前的桌面视频数据、音频数据和鼠标数据进行组播；
SPICE服务端将已进行组播的虚拟机当前的桌面视频数据、虚拟机当前的音频数据和虚拟机当前的鼠标数据作为组播数据推送给已加入组播组的SPICE客户端，使所述SPICE客户端所接入的虚拟桌面实现组播功能。
可选地，所述的已进行组播的虚拟机当前的桌面视频数据、虚拟机当前的音频数据和虚拟机当前的鼠标数据均小于一个用户数据报协议UDP包的最大值。
可选地，所述的SPICE服务端将已进行组播的虚拟机当前的桌面视频数据、虚拟机当前的音频数据和虚拟机当前的鼠标数据作为组播数据推送给已加入组播组的SPICE客户端包括：
所述SPICE服务端接收来自所述SPICE客户端发送的建立连接请求；
所述SPICE服务端根据所接收到的建立连接请求，向所述SPICE客户端发送初始化信息以及所述SPICE客户端待加入的多个组播组地址；
所述SPICE服务端将所述SPICE客户端分别加入到所述多个组播组地址对应的组播组中，以便将所述组播数据推送给所述SPICE客户端。
可选地，所述初始化信息包括：
当前的桌面视频数据的初始化信息、当前音频数据的初始化信息以及当前鼠标数据的初始化信息。
可选地，所述的向所述SPICE客户端发送初始化信息以及所述SPICE客户端待加入的多个组播组地址包括：
所述SPICE客户端接收所述初始化信息和待加入的多个组播组地址；
所述SPICE客户端根据所述初始化信息分别完成所述当前的桌面视频数据、当前音频数据以及当前鼠标数据的初始化操作；
当所述SPICE客户端完成所述初始化操作后，根据所接收到的多个组播组地址，分别加入到对应的组播组中，以便接收所述SPICE客户端推送的组播数据。
根据本发明的另一实施例，提供了一种虚拟桌面实现组播的方法，包括客户端执行的以下步骤：
SPICE客户端向SPICE服务端发送建立连接的请求，接收并保存SPICE服务端发送的多个组播组地址；
所述SPICE客户端加入到所述多个组播组地址对应的组播组地址中，并接收来自SPICE服务端推送的已进行组播的虚拟机当前的桌面视频数据、虚拟机当前的音频数据和虚拟机当前的鼠标数据的组播数据。
根据本发明的另一实施例，提供了一种SPICE服务端，包括以下模块：
组播模块，设置为：分别将虚拟机当前的桌面视频数据、虚拟机当前的音频数据以及虚拟机当前的鼠标数据进行组播；
推送模块，设置为：将已进行组播的虚拟机当前的桌面视频数据、虚拟 机当前的音频数据和虚拟机当前的鼠标数据作为组播数据推送给已加入组播组的SPICE客户端，使所述SPICE客户端所接入的虚拟桌面实现组播功能。
可选地，所述的已进行组播的虚拟机当前的桌面视频数据、虚拟机当前的音频数据和虚拟机当前的鼠标数据均小于一个用户数据报协议UDP包的最大值。
可选地，所述的推送模块包括：
建立连接请求单元，设置为：接收来自所述SPICE客户端发送的建立连接请求；
发送单元，设置为：根据所接收到的建立连接请求，向所述SPICE客户端发送初始化信息以及所述SPICE客户端待加入的多个组播组地址；
加入组播组单元，设置为：将所述SPICE客户端分别加入到所述多个组播地址对应的组播组中，以便将所述组播数据推送给所述SPICE客户端。
根据本发明的另一实施例，提供了一种SPICE客户端的，包括以下模块：
获取组播组地址模块，设置为：通过向SPICE服务端发送建立连接的请求，接收并保存SPICE服务端发送的多个组播组地址；
接收模块，设置为：将所述SPICE客户端加入到所述组播地址对应的组播组地址中，并接收来自SPICE服务端推送的已进行组播的虚拟机当前的桌面视频数据、虚拟机当前的音频数据和虚拟机当前的鼠标数据的组播数据。
本发明实施例可以扩大虚拟桌面在教育领域及有类似场景的应用，节省了用户投入，提升用户使用体验，对于基于VDI构架及SPICE传输协议的虚拟桌面的推广具有良好的示范意义。
附图概述
图1是本发明实施例提供的一种虚拟桌面实现组播的方法流程图；
图2是本发明实施例提供的一种虚拟桌面实现组播的装置示意图；
图3是本发明实施例提供的基于VDI构架及SPICE传输协议的虚拟桌面组网图；
图4是本发明实施例提供的SPICE Device(SPICE服务端)整体设计图；
图5是本发明实施例提供的SPICE Client(SPICE客户端)整体设计图；
图6是本发明实施例提供的组播客户端与服务端的建链流程。
本发明的较佳实施方式
以下结合附图对本发明的实施例进行详细说明，应当理解，以下所说明的优选实施例仅用于说明和解释本发明，并不用于限定本发明。
本发明实施例基于VDI构架及SPICE传输协议，通过对SPICE Device及SPICE Client的改造，并配以运维管理模块的控制，高效地完成虚拟桌面的组播功能，使得对多路虚拟桌面的消耗变为使用一路虚拟桌面就可以完成教学工作，并可以提升教学演示场景的用户体验，同时可以节省计算和存储资源，提升服务器并发组播数量，且减少对网络带宽的影响。同时本系统提供了一套完整的运维系统，完成对组播虚拟桌面的管理。
图1显示了本发明实施例提供的一种虚拟桌面实现组播的方法流程图，如图1所示，包括以下步骤：
步骤S101：简单协议独立计算环境SPICE服务端将虚拟机当前的桌面视频数据进行组播；
步骤S102：SPICE服务端将虚拟机当前的音频数据进行组播；
步骤S103：SPICE服务端将虚拟机当前的鼠标数据进行组播；
步骤S104：SPICE服务端将已进行组播的虚拟机当前的桌面视频数据、虚拟机当前的音频数据和虚拟机当前的鼠标数据作为组播数据推送给已加入组播组的SPICE客户端，使所述SPICE客户端所接入的虚拟桌面实现组播功能。
本发明实施例所述的已进行组播的虚拟机当前的桌面视频数据、虚拟机当前的音频数据和虚拟机当前的鼠标数据均小于一个用户数据报协议UDP包的最大值。
其中，所述的SPICE服务端将已进行组播的虚拟机当前的桌面视频数据、 虚拟机当前的音频数据和虚拟机当前的鼠标数据作为组播数据推送给已加入组播组的SPICE客户端包括：所述SPICE服务端接收来自所述SPICE客户端发送的建立连接请求；所述SPICE服务端根据所接收到的建立连接请求，向所述SPICE客户端发送初始化信息以及所述SPICE客户端待加入的多个组播组地址；所述SPICE服务端根据所述多个组播组地址将所述SPICE客户端加入到对应的组播组中，以便将所述组播数据推送给所述SPICE客户端。其中，所述初始化信息包括：当前的桌面视频数据的初始化信息、当前音频数据的初始化信息以及当前鼠标数据的初始化信息。
本发明实施例所述的向所述SPICE客户端发送初始化信息以及所述SPICE客户端待加入的多个组播组地址包括：所述SPICE客户端接收所述初始化信息和待加入的多个组播组地址；所述SPICE客户端根据所述初始化信息分别完成所述当前的桌面视频数据、当前音频数据以及当前鼠标数据的初始化操作；当所述SPICE客户端完成所述初始化操作后，根据所接收到的多个组播组地址，分别加入到对应的组播组中，以便接收所述SPICE客户端推送的组播数据。
本发明实施例还包括客户端执行的以下步骤：SPICE客户端通过向SPICE服务端发送建立连接的请求，接收并保存SPICE服务端发送的多个组播组地址；所述SPICE客户端根据所接收到的多个组播组地址，加入到对应的组播组地址中，并接收来自SPICE服务端推送的已进行组播的虚拟机当前的桌面视频数据、虚拟机当前的音频数据和虚拟机当前的鼠标数据的组播数据。
图2是本发明实施例提供的一种虚拟桌面实现组播的装置示意图，如图2所示，包括服务端201和客户端202，其中，所述服务端包括组播模块2011，设置为：分别将虚拟机当前的桌面视频数据、虚拟机当前的音频数据以及虚拟机当前的鼠标数据进行组播；推送模块2012，设置为：将已进行组播的虚拟机当前的桌面视频数据、虚拟机当前的音频数据和虚拟机当前的鼠标数据作为组播数据推送给已加入组播组的SPICE客户端，使所述SPICE客户端所接入的虚拟桌面实现组播功能；所述客户端202包括获取组播组地址模块2021，设置为：通过向SPICE服务端发送建立连接的请求，接收并保存SPICE服务端发送的多个组播组地址；接收模块2022，设置为：根据所接收到的多 个组播组地址，加入到对应的组播组地址中，并接收来自SPICE服务端推送的已进行组播的虚拟机当前的桌面视频数据、虚拟机当前的音频数据和虚拟机当前的鼠标数据的组播数据。其中，所述的推送模块202包括：建立连接请求单元，设置为：接收来自所述SPICE客户端发送的建立连接请求；发送单元，设置为：根据所接收到的建立连接请求，向所述SPICE客户端发送初始化信息以及所述SPICE客户端待加入的多个组播组地址；加入组播组单元，设置为：根据所述多个组播组地址将所述SPICE客户端加入到对应的组播组中，以便将所述组播数据推送给所述SPICE客户端。本发明实施例所述的已进行组播的虚拟机当前的桌面视频数据、虚拟机当前的音频数据和虚拟机当前的鼠标数据均小于一个用户数据报协议UDP包的最大值。所述初始化信息包括：当前的桌面视频数据的初始化信息、当前音频数据的初始化信息以及当前鼠标数据的初始化信息。
图3显示了本发明实施例提供的基于VDI构架及SPICE传输协议的虚拟桌面组网图，如图3所示，包括：SPICE的客户端(SPICE Client)301，运行在终端设备上，设置为：接入每个虚拟桌面，实现组播功能需要进行客户端的改造；SPICE服务端(SPICE Device)302，运行于虚拟化hypervisor内的组件，实现组播功能需要进行服务端的改造；SPICE驱动器(SPICE Driver)303，运行于虚拟桌面内部的组件，主要包含一些常见驱动、代理等功能。
图4显示了本发明实施例提供的SPICE Device(SPICE服务端)整体设计图，如图4所示，在SPICE服务端(即SPICE Device设备)增加4个组播模块，分别设置为：将虚拟机当前的桌面显示数据、音频数据、鼠标数据进行组播，以及实现对组播客户端的控制功能。其中，图中虚线框为所增加的4个组播模块，分别是显示通道的组播模块401、音频通道的组播模块402、鼠标通道(cursor channel)的组播模块403以及组播控制通道模块404。其中，显示通道的组播模块401，设置为将虚拟机当前的桌面显示数据组播。系统采用每一个UDP(User Datagram Protocol，用户数据报协议)都包含一个完整的绘制命令，节省客户端的重组操作。具体的实现是以每秒12帧的速率在服务端导出显示当前的最新图像数据，同时将该表面图像切割为多个小块，每个小块大小均低于一个UDP包所能容纳的最大值，然后将这些小块组成对 应的绘制信息发送到客户端。客户端接收到对应的绘制信息后，无需重组，即可在窗口进行绘制。音频通道的组播模块402，设置为将虚拟机当前的音频数据组播。音频数据消息小于单个UDP包的最大值，不存在UDP分包重组问题。在实现中，在SPICE原有的发送流程中将消息再次组播出去即可。鼠标通道的组播模块403，设置为将虚拟机当前的鼠标数据组播。鼠标数据消息小于单个UDP包的最大值，不存在UDP分包重组问题。在实现中，在SPICE原有的发送流程中将消息再次组播出去即可。组播控制通道模块404，设置为实现对组播客户端的控制功能。组播控制通道模块404新增一个线程池，含有10根守护线程，每根线程最多可以维护30个组播客户端的连接，线程池中的每根线程都由一个信号量守护，每当事件发生时，由主线程在每根线程的消息队列中放入对应消息后，依次激活每根线程的信号量，线程被激活后，从各自的消息队列中取出事件并处理。在Spice服务端接受了组播客户端的连接请求后，将该客户端加入线程池中维护客户端数目最小的一根线程中，保证各个线程间负荷平衡。
图5显示了本发明实施例提供的SPICE Client(SPICE客户端)整体设计图，如图5所示，在SPICE客户端(SPICE Client设备)增加3个模块，完成与服务端的配合工作。图中虚线框为所增加的3个模块，分别是控制通道(Control Channel)模块501、组播等同(Multicast Peer)模块502以及组播通道(Multicast Channel)模块503。其中，Control Channel模块501，完成与服务端的链接保存，定时心跳及获取服务端的控制信息。也就是说，用于与spice服务端初始化通信，获取需要的初始化信息，随后与服务端保存连接，定时心跳及获取服务端端的控制信息。Multicast Peer模块502，负责建立一对套接字对(socket pair)，在组播守护线程及对应的通道线程间通信，完成消息的交互。Multicast Channel模块503，设置为获取组播地址并新建守护线程，加入对应的组播组，收取服务端的组播信息。也就是说，根据获取的各个组播地址，分别启动一根守护线程，加入对应的组播组收取服务端的组播信息。
图6显示了本发明实施例提供的组播客户端与服务端的建链流程，如图6所示，包括以下步骤：
步骤S601：SPICE客户端向SPICE服务端发送建立连接请求；
步骤S602：SPICE服务端根据收到的请求，判断是否应该建立连接；
步骤S603：SPICE服务端允许建立连接，返回初始化信息，信息中包括视频，鼠标，音频的初始化信息及客户端需要加入的组播组地址；
步骤S604：SPICE服务端向路由器广播数据包；
步骤S605：SPICE客户端根据服务端返回的信息，初始化视频，鼠标及音频通道，同时加入对应的组播组开始接受数据并处理；
步骤S606：SPICE客户端通过路由器接收相应的广播数据包；
步骤S607：SPICE服务端将该客户端加入组播组中，并更新后台数据，便于对组播组成员进行管理；
步骤S608：SPICE客户端与SPICE服务端建立控制通道，定时保活同时监听处理控制信息。
此外，本发明实施例通过改造后的SPICE传输协议，当用户需要使用组播功能时，SPICE服务端需要做的就是向特殊的组播用户组发送一个报文，组播组中的用户可以自由复制得到这个报文。这种情况下，无论接受者增加多少人，服务端需要做的只是发送一个报文，而网络上传送的也只是一份报文。通过增加一套运维管理及配置系统，完成组播的相关管理，如组播虚拟桌面管理、组播虚拟桌面切换、组播客户端管理等。
综上所述，基于VDI构架及SPICE传输协议的虚拟桌面实现组播的方法及装置，主要功能特点是：
(1)可以满足虚拟桌面在日常教学场景的使用要求，常规环境下不存在IO及网络的性能瓶颈。
(2)由于使用组播技术，可以大幅度节省用户的虚拟桌面数量(一般可以达到50：1的比例)，进而大幅度节省虚拟桌面用户的投入成本。
(3)运维管理系统可以方便的完成组播虚拟桌面的管理。上课前，教师可以方便地完成组播对象的管理，组播桌面的切换等，提升教学资源的利用率。
本领域普通技术人员可以理解上述实施例的全部或部分步骤可以使用计算机程序流程来实现，所述计算机程序可以存储于一计算机可读存储介质中，所述计算机程序在相应的硬件平台上(如系统、设备、装置、器件等)执行，在执行时，包括方法实施例的步骤之一或其组合。
可选地，上述实施例的全部或部分步骤也可以使用集成电路来实现，这些步骤可以被分别制作成一个个集成电路模块，或者将它们中的多个模块或步骤制作成单个集成电路模块来实现。这样，本发明不限制于任何特定的硬件和软件结合。
上述实施例中的各装置/功能模块/功能单元可以采用通用的计算装置来实现，它们可以集中在单个的计算装置上，也可以分布在多个计算装置所组成的网络上。
上述实施例中的各装置/功能模块/功能单元以软件功能模块的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。上述提到的计算机可读取存储介质可以是只读存储器，磁盘或光盘等。
工业实用性
本发明实施例可以高效地满足教育领域对虚拟桌面在教学方面的使用要求，节省用户资源，满足用户快速切换虚拟桌面等要求，是一项极具特色的亮点功能，对虚拟桌面在教育领域的推广，起到很好的示范作用。

Claims (12)

  1. 一种虚拟桌面实现组播的方法，包括：
    简单协议独立计算环境SPICE服务端将虚拟机当前的桌面视频数据、音频数据和鼠标数据进行组播；
    所述SPICE服务端将已进行组播的虚拟机当前的桌面视频数据、虚拟机当前的音频数据和虚拟机当前的鼠标数据作为组播数据推送给已加入组播组的SPICE客户端，使所述SPICE客户端所接入的虚拟桌面实现组播功能。
  2. 根据权利要求1所述的方法，其中，所述的已进行组播的虚拟机当前的桌面视频数据、虚拟机当前的音频数据和虚拟机当前的鼠标数据均小于一个用户数据报协议UDP包的最大值。
  3. 根据权利要求1或2所述的方法，其中，所述的SPICE服务端将已进行组播的虚拟机当前的桌面视频数据、虚拟机当前的音频数据和虚拟机当前的鼠标数据作为组播数据推送给已加入组播组的SPICE客户端之前，所述方法还包括：
    所述SPICE服务端接收来自所述SPICE客户端发送的建立连接请求；
    所述SPICE服务端根据所接收到的建立连接请求，向所述SPICE客户端发送初始化信息以及所述SPICE客户端待加入的多个组播组地址；
    所述SPICE服务端将所述SPICE客户端分别加入到所述多个组播组地址对应的组播组中，以便将所述组播数据推送给所述SPICE客户端。
  4. 根据权利要求3所述的方法，其中，所述初始化信息包括：
    当前的桌面视频数据的初始化信息、当前音频数据的初始化信息以及当前鼠标数据的初始化信息。
  5. 根据权利要求3所述的方法，其中，所述的向所述SPICE客户端发送初始化信息以及所述SPICE客户端待加入的多个组播组地址之后，所述方法还包括：
    所述SPICE客户端接收所述初始化信息和待加入的多个组播组地址；
    所述SPICE客户端根据所述初始化信息分别完成所述当前的桌面视频数 据、当前音频数据以及当前鼠标数据的初始化操作；
    当所述SPICE客户端完成所述初始化操作后，分别加入到所述多个组播组地址对应的组播组中，以便接收所述SPICE客户端推送的组播数据。
  6. 一种虚拟桌面实现组播的方法，包括：
    简单协议独立计算环境SPICE客户端向SPICE服务端发送建立连接的请求，接收并保存所述SPICE服务端发送的多个组播组地址；
    所述SPICE客户端加入到所述多个组播组地址对应的组播组地址中，并接收来自SPICE服务端推送的已进行组播的虚拟机当前的桌面视频数据、虚拟机当前的音频数据和虚拟机当前的鼠标数据的组播数据。
  7. 一种简单协议独立计算环境SPICE服务端，包括：
    组播模块，其设置为：分别将虚拟机当前的桌面视频数据、虚拟机当前的音频数据以及虚拟机当前的鼠标数据进行组播；以及
    推送模块，其设置为：将已进行组播的虚拟机当前的桌面视频数据、虚拟机当前的音频数据和虚拟机当前的鼠标数据作为组播数据推送给已加入组播组的SPICE客户端，使所述SPICE客户端所接入的虚拟桌面实现组播功能。
  8. 根据权利要求7所述的装置，其中，所述的已进行组播的虚拟机当前的桌面视频数据、虚拟机当前的音频数据和虚拟机当前的鼠标数据均小于一个用户数据报协议UDP包的最大值。
  9. 根据权利要求7或8所述的装置，其中，所述的推送模块包括：
    建立连接请求单元，其设置为：接收来自所述SPICE客户端发送的建立连接请求；
    发送单元，其设置为：根据所接收到的建立连接请求，向所述SPICE客户端发送初始化信息以及所述SPICE客户端待加入的多个组播组地址；以及
    加入组播组单元，其设置为：将所述SPICE客户端分别加入到所述多个组播地址对应的组播组中，以便将所述组播数据推送给所述SPICE客户端。
  10. 一种简单协议独立计算环境SPICE客户端，包括：
    获取组播组地址模块，其设置为：通过向SPICE服务端发送建立连接的 请求，接收并保存SPICE服务端发送的多个组播组地址；以及
    接收模块，其设置为：将所述SPICE客户端加入到所述组播地址对应的组播组地址中，并接收来自SPICE服务端推送的已进行组播的虚拟机当前的桌面视频数据、虚拟机当前的音频数据和虚拟机当前的鼠标数据的组播数据。
  11. 一种计算机程序，包括程序指令，当该程序指令被计算机执行时，使得该计算机可执行权利要求1-5任一项所述的方法。
  12. 一种载有权利要求11所述计算机程序的计算机可读存储介质。
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