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CN101030873A - Method and system for downloading data - Google Patents

Method and system for downloading data Download PDF

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CN101030873A
CN101030873A CN 200710084661 CN200710084661A CN101030873A CN 101030873 A CN101030873 A CN 101030873A CN 200710084661 CN200710084661 CN 200710084661 CN 200710084661 A CN200710084661 A CN 200710084661A CN 101030873 A CN101030873 A CN 101030873A
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download
file
client
side
strategy
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CN 200710084661
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Chinese (zh)
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李金波
潘学会
顾生华
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深圳市迅雷网络技术有限公司
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Abstract

The method is used for improving the download rate and the download quality of client side. It comprises: the client side sends a download request to the central server; the download request comprises the ID of file to be downloaded; according to the ID of file, the central server enquiries all file servers and client side where said file is saved; the central server sends the download strategy to the client side requesting the download; the download strategy includes the paths of all file servers and client sides where the said file is saved; after receiving the download strategy, the client side requesting the download starts to download the desired data.

Description

一种下载数据的方法及系统 A method and system for downloading data

技术领域 FIELD

本发明涉及计算机及通信领域,特别是下载数据的方法及系统。 The present invention relates to the field of computer and communications, especially the method and system of the downloaded data.

背景技术 Background technique

互联网的主要应用之一就是资源共享,用户可通过互联网获得需要的信息和数据。 One of the main applications of the Internet is a shared resource, the user can obtain the required information and data via the Internet. 目前现有技术中存在两种主要下载方式,一种是采用客户端-服务器(CS)架构,客户端根据服务器的网络地址向服务器发送数据下载请求,服务器响应请求后发送数据给客户端,客户端接收数据并完成下载。 Currently two main ways exist downloaded prior art, is the use of a client - server (CS) architecture, the client sends a data download request to the server according to the network address of the server, the server transmits the response request data to the client, receives the data and complete the download. 参见图1所示。 Referring to FIG. 1. 这种方式下,大量客户端同时从服务器下载数据,会占用大量系统资源,服务器的负担较重,如果利用多个服务器分担承载的客户端数量,会增加网络成本。 In this manner, a large number of clients simultaneously downloading data from a server, will take up a lot of system resources, a heavier burden on the server, using a plurality of servers if the number of clients sharing the load, increases the network cost.

另一种方式同样是采用CS架构,但该方式中的服务器只进行下载调度和协调工作,不保存数据,一个客户端通过服务器获得其它客户端的地址,并从其它客户端下载数据。 Another way is to use the same CS architecture, but the only way servers to download the scheduling and coordination, without saving the data, a client get other clients address server and download data from other clients. 参见图2所示。 Referring to FIG. 2. 这种方式下,数据保存在客户端,而客户端的数据稳定性较差,文件容易被改变位置或被删除,导致其它客户端无法下载,并且客户端的承载能力较弱,无法同时承载较多的客户端同时下载数据,以及当多个客户端同时从一个客户端下载数据时,多个客户端的下载质量不理想,也会影响该客户端的其它业务运行。 In this way, the data stored in the client, and the poor stability of the client data, the file location is changed or deleted easily, causing other clients can not download, and the client's carrying capacity is weak, can not carry many of the same time clients simultaneously downloading data, and when multiple clients simultaneously downloading data from a client to download multiple clients quality is not ideal, it can also affect other business operations of the client. 一个客户端的下载速率完全依赖于其它客户端的上传速率,而上传速率由用户自行控制,用户经常担心上传速率过高会影响该客户端的其它业务而将上传速率调低,所以会影响整个网络的下载速率。 Download rate a client is totally dependent on the upload speed of other clients, while the upload speed itself controlled by the user, the user often worry about upload speed too high will affect other services to the client and the upload rate down, it will affect the download of the entire network rate.

发明内容 SUMMARY

本发明提供一种下载数据的方法及系统,用于提高客户端下载数据的速率和下载质量。 The present invention provides a method and system for downloading data, for increasing the speed and quality of the download client to download the data.

本发明提供以下技术方案:一种基于比特流文件传输协议的下载数据的方法,包括以下步骤:客户端向中央服务器发送下载请求,该下载请求包括请求下载的文件的标识;所述中央服务器根据所述文件的标识查询存有所述文件的数据的文件服务器和客户端;所述中央服务器向发送所述下载请求的客户端发送下载策略,该下载策略包括存有所述文件的数据的文件服务器和客户端的下载路径;发送所述下载请求的客户端根据收到的下载策略同时从文件服务器和客户端下载需要的数据。 The present invention provides the following technical solutions: A, the method comprising the steps of bit stream data downloaded file transfer protocol based on: the client sends a download request to the central server, the download request includes an identification of the file requested to be downloaded; according to the central server identifying the file there query data file of the file server and the client; the policy is downloaded to the central server sends the client sends the download request, the download policy includes a data file of the file there server and client download path; and sending the download request of the client the required data downloaded from the file server and the client according to the received download policy.

所述中央服务器根据预先制定的选择策略从查询到的文件服务器和客户端中选择文件服务器和客户端。 The central server and select the file server from the client to query the file server and client selection policy based on pre-established.

所述中央服务器根据所述选择策略为选择的文件服务器和客户端设定优先级,并将该优先级携带在下载策略中发送给发送所述下载请求的客户端。 The central server set priority selected file server and client according to the selection policy and the priority to the transmission carried in the download request to download the policy client.

发送所述下载请求的客户端按照下载策略中的优先级由高到低的顺序连接文件服务器和客户端。 Transmitting the download request to the client in a descending order of download priority connection policy file servers and clients.

所述选择策略包括下述选择方式之一或它们的组合:所述中央服务器从查询到文件服务器和客户端中优先选择与所述发送下载请求的客户端处于同一局域网的文件服务器和客户端;或者所述中央服务器从查询到文件服务器和客户端中优先选择下载速率不低于预设的门限值的文件服务器和客户端,或者从查询到文件服务器和客户端中按下载速率由高到低的顺序选择文件服务器和客户端;或者所述中央服务器从查询到文件服务器和客户端中优先选择承载的客户端数量不大于预设的门限值的文件服务器和客户端;或者从查询到文件服务器和客户端中按承载的客户端数量由小到大的顺序选择文件服务器和客户端。 The selection policy comprises selecting one of the following ways, or a combination thereof: a query from the central server to the file server and the client sends a download request to select the priority of the client in the same local area network file servers and clients; the central server or from the selected query to the file server and the client with the highest priority is not lower than the preset rate threshold file server and client, or from a query to the file server and the client according to a high download speed low order to select the file server and the client; central server or the client carries selection number is not greater than the preset threshold of the file server and the client query from the client to the file server and the priority; or queried from the file server and the client according to the number carried in ascending order of selection of the client file servers and clients.

所述中央服务器在选择文件服务器和客户端时优先选择文件服务器。 The preferred central server when selecting the file server and the file server client.

发送所述下载请求的客户端从同一局域网的文件服务器和客户端下载数据时启用的线程数不少于从其它文件服务器和客户端下载时启用的线程数。 The number of threads enabled sending the download request from the same client LAN file server and the client to download data enabled when the number of threads less than other files downloaded from the server and the client.

客户端根据下载策略提供的文件服务器和客户端中选择文件服务器和客户端下载数据。 File server and client provided by the client to download a policy file, select the server and the client to download data.

一种下载数据的方法,包括以下步骤:客户端向中央服务器发送下载请求,该下载请求包括请求下载的文件的标识;所述中央服务器根据所述文件的标识查询存有所述文件的数据的文件服务器和客户端,并根据预先制定的选择策略从查询到的文件服务器和客户端中选择文件服务器和客户端;所述中央服务器向发送所述下载请求的客户端发送下载策略,该下载策略包括选择的文件服务器和客户端的下载路径;发送所述下载请求的客户端根据收到的下载策略同时从文件服务器和客户端下载需要的数据。 A method for downloading data, comprising the steps of: the client sends a download request to the central server, the download request comprising an identification of the file requested to be downloaded; there the central server of the query data file according to the identifier of the file the file server and the client, and select the file from the server and the client to query the file server and the client according to a selection of pre-established policies; the policy is downloaded to the central server sends the client sends a download request, the download policy download path including the selected file server and the client; transmitting said download request to download data to the client at the same time from the file server and the client according to the received download policy.

所述中央服务器根据所述选择策略为选择的文件服务器和客户端设定优先级,并将该优先级携带在下载策略中发送给发送所述下载请求的客户端。 The central server set priority selected file server and client according to the selection policy and the priority to the transmission carried in the download request to download the policy client.

发送所述下载请求的客户端按照下载策略中的优先级由高到低的顺序连接文件服务器和客户端。 Transmitting the download request to the client in a descending order of download priority connection policy file servers and clients.

客户端根据预先制定的选择策略从连接到的文件服务器和客户端中选择文件服务器和客户端并进行下载。 Client Select the file server and client selection policy based on pre-established from the connection to the file server and client and download them.

所述选择策略包括下述选择方式之一或它们的组合:所述中央服务器从查询到文件服务器和客户端中优先选择与所述发送下载请求的客户端处于同一局域网的文件服务器和客户端;或者所述中央服务器从查询到文件服务器和客户端中优先选择下载速率不低于预设的门限值的文件服务器和客户端,或者从查询到文件服务器和客户端中按下载速率由高到低的顺序选择文件服务器和客户端;或者所述中央服务器从查询到文件服务器和客户端中优先选择承载的客户端数量不大于预设的门限值的文件服务器和客户端;或者从查询到文件服务器和客户端中按承载的客户端数量由小到大的顺序选择文件服务器和客户端。 The selection policy comprises selecting one of the following ways, or a combination thereof: a query from the central server to the file server and the client sends a download request to select the priority of the client in the same local area network file servers and clients; the central server or from the selected query to the file server and the client with the highest priority is not lower than the preset rate threshold file server and client, or from a query to the file server and the client according to a high download speed low order to select the file server and the client; central server or the client carries selection number is not greater than the preset threshold of the file server and the client query from the client to the file server and the priority; or queried from the file server and the client according to the number carried in ascending order of selection of the client file servers and clients.

所述中央服务器在选择文件服务器和客户端时优先选择文件服务器。 The preferred central server when selecting the file server and the file server client.

发送所述下载请求的客户端从同一局域网的文件服务器和客户端下载数据时启用的线程数不少于从其它文件服务器和客户端下载时启用的线程数。 The number of threads enabled sending the download request from the same client LAN file server and the client to download data enabled when the number of threads less than other files downloaded from the server and the client.

一种服务器,包括:用于接收客户端发送的下载请求的单元,该下载请求包括请求下载的文件的标识;用于存储文件服务器和客户端的相关信息的单元;用于根据所述文件的标识查询存有所述文件的数据的文件服务器和客户端的单元;用于根据预先制定的选择策略从查询到的文件服务器和客户端中选择文件服务器和客户端的单元;用于向发送所述下载请求的客户端发送下载策略的单元,该下载策略包括选择的文件服务器和客户端的下载路径。 A server, comprising: means for receiving a download request sent by the client, the download request comprising a request to download a file identifier; means for storing information related to the file server and the client; according to the identifier of the file there query data file of the file server and the client; means for selecting the file server and the client unit from the query to the file server and the client according to a selection of pre-established policy; means for transmitting said request to download the client sends a download policy unit, the download path of the selected file download strategy includes server and client.

一种基于比特流文件分发协议的客户端,包括:发送单元,用于根据控制单元的指示向中央服务器发送下载请求,该下载请求包括请求下载的文件的标识;接收单元,用于接收中央服务器发送的下载策略,该下载策略包括文件服务器和客户端的下载路径,以及从文件服务器和客户端接收下载的数据;控制单元,用于根据所述文件服务器和客户端的下载路径指示连接单元与相应的文件服务器和客户端建立连接,并查询本客户端需要下载的数据并进行下载;连接单元,用于根据所述控制单元的指示,通过所述接收单元和发送单元与所述文件服务器和客户端进行交互,建立与文件服务器和客户端的连接。 Based on bitstream file distribution protocol client, comprising: a transmitting unit for transmitting instruction from the control unit to the central server a download request, the download request comprising a request to download a file identifier; receiving means for receiving the central server download policy sent the download policy including file servers and download path of the client, and the downloaded data is received from the file server and the client; a control unit for instructing the connection unit with the respective according to the file server and download path client's the file server and the client to establish the connection, the client and present the query data to be downloaded and download; connection unit according to the instruction of the control unit, by the receiving unit and transmitting unit with the file server and the client interact, establish a connection with the file server and the client.

一种基于比特流文件分发协议的通信系统,包括:客户端,用于向中央服务器发送下载请求,并根据收到的下载策略下载需要的数据;其中,所述下载请求包括请求下载的文件的标识;所述中央服务器根据所述文件的标识查询存有所述文件的数据的文件服务器和客户端,以及向发送所述下载请求的客户端发送下载策略,该下载策略包括存有所述文件的数据的文件服务器和客户端的下载路径。 Based on the communication system bitstream file distribution protocol, comprising: a client, configured to send a download request to the central server, and download the data according to the received policy needed to download; wherein the download request comprises a request to download a file identifier; there the central server queries the data file according to the identifier of the file server and the client, and transmitting to the client sends the download request to download a policy, the policy includes downloading the file there Download the file path of the server and client data.

一种通信系统,包括:客户端,用于向中央服务器发送下载请求,并根据收到的下载策略下载需要的数据;其中,所述下载请求包括请求下载的文件的标识;所述中央服务器根据所述文件的标识查询存有所述文件的数据的文件服务器和客户端,并根据预先制定的选择策略从查询到的文件服务器和客户端中选择文件服务器和客户端,以及向发送所述下载请求的客户端发送下载策略,该下载策略包括选择的文件服务器和客户端的下载路径。 A communication system, comprising: a client, configured to send a download request to the central server, and download the data according to the received policy needed to download; wherein the download request comprises a request to download a file identifier; according to the central server identifying the file query data of the file there is a file server and client, and select the file server and client selection policy based on pre-established from the query to the file server and the client, as well as to send the download the client sends a request to download a policy, the policy includes downloading the selected file server and download path of the client.

本发明有益效果如下:本实施例通过文件服务器为请求客户端提供下载服务,利用了文件服务器的高性能和非易修改性,提升了客户端的下载速率和下载质量。 Advantageous effects of the present invention are as follows: the present embodiment provides a download service request from the client through the file server, using a high performance and ease of modification of non-file server, the client downloads the upgrade rate and quality of the download. 同时利用了客户端来分担服务器的承载,并且可以节省网络成本。 While using a client server to share the bearer, the network and the cost can be saved.

本实施例还通过中央服务器制定下载策略,从可提供数据下载的文件服务器和客户端中选择可提供下载速率较好的文件服务器和客户端提供给请求客户端,即保证了客户端的下载速率又节省了网络资源。 This embodiment also developed download policy through the central server, from the file server and the client may provide data download selected available for download rate better file server and the client to the requesting client, i.e. to ensure that the download rate client and saving network resources.

附图说明 BRIEF DESCRIPTION

图1为现有技术中一种通信系统的结构图;图2为现有技术中另一种通信系统的结构图;图3为本发明实施例中通信系统的结构图;图4A为本发明实施例中中央服务器的结构图; Figure 1 is a prior art block diagram of a communication system; FIG. 2 is a block diagram of another prior art communication system; FIG. 3 configuration diagram of a communication system according to the present invention; FIG. 4A of the present invention FIG central server structure embodiment;

图4B为本发明实施例中客户端的结构图;图5为本发明实施例中基于比特流文件分发协议的下载数据的主要方法流程图;图6为本发明实施例中基于比特流文件分发协议的下载数据的具体方法流程图;图7为本发明实施例中下载数据的具体方法流程图。 FIG. 4B client configuration diagram of embodiment of the invention; Fig. 5 flowchart main method for downloading data bitstream file distribution protocol-based embodiment of the present invention; Fig. 6 based on the bitstream file distribution protocol of the present invention the specific method of downloading data flow; FIG. 7 flowchart of a specific embodiment a method to download data embodiment of the invention.

具体实施方式 detailed description

为了提高客户端下载数据的速率和下载质量,本实施例在网络中增加用于存储数据的服务器(本实施例中称为文件服务器),通过用于下载调度和协调的服务器(本实施例中称为中央服务器)进行统一的下载调度和制定下载策略。 In order to increase the rate of the client to download the download data and quality, the present embodiment increases the server for storing data in a network (in this embodiment called a file server), to download through the scheduling and coordination servers (in this embodiment called the central server) unified download download scheduling and formulate strategies. 客户端可同时从其它客户端和文件服务器下载用户需要的数据。 The client can simultaneously download the data you need from other clients and file servers.

在本实施例中,将文件划分为多个数据包,各数据包称为文件分片。 In the present embodiment, the file is divided into a plurality of data packets, each data packet is called file fragmentation. 每个文件分片对应有标识和大小等信息。 Each file has a corresponding fragment size identification and other information.

参见图3,本实施例中通信系统包括客户端301、中央服务器302和文件服务器303。 Referring to Figure 3, the communication system of the present embodiment includes a client 301 embodiment, the central server 302 and file server 303.

文件服务器303存储文件数据,可以是完整的文件或部分文件分片,以及存有本服务器的相关信息,包括标识、IP地址、各端口号、所用的代理、文件标识列表和与文件对应的文件分片标识列表等。 File server 303 stores the file data, it may be a complete file or the part of the file fragments and there relevant information in this server, including the identifier, IP addresses, port numbers, used by the agent, the file identifier list and a file corresponding to the file fragment identifier list and the like.

客户端301存有文件数据,同时可根据用户的需要请求下载文件或文件分片。 301 there client data files, and can request to download a file or according to a user's need to be fragmented. 收到中央服务器302返回的文件服务器303和其它客户端301的标识和下载路径等信息从相应的文件服务器303和客户端301下载需要的文件分片,并定期向中央服务器302发送下载状态信息和数据信息,其中下载状态信息包括下载速率、上传速率、下载进度和承载的客户端301数量等;数据信息包括已下载的文件分片的标识等。 Central server 302 receives a file returned by the file server 303 and the download path information for identifying the other clients 301 and other required documents from the respective clients 301 and the server 303 to download fragments, and periodically transmit information to the central server 302 and the download status data, wherein the status information includes downloading the download rate, the rate of upload, download progress and the number of clients 301 bearer; includes data identifying information, etc. downloaded file fragment.

下载速率是指在单位带宽内下载的比特数与下载时间的比值;上传速率是指在单位带宽内上传的比特数与上传时间的比值;下载进度是指下载的比特数占总文件大小的百分比。 Downloading download rate is the ratio of the number of bits in the unit bandwidth and download time; upload rate is the number of bits in the unit bandwidth ratio uploaded to upload time; download progress is the percentage of the total number of bits downloaded file size .

中央服务器302存有各文件服务器303和客户端301的相关信息,文件服务器303的相关信息包括标识、IP地址、端口、所用的代理、存有的文件标识、各文件对应的文件分片标识、各文件的地址、当前的下载速率和承载的客户端301数量等;客户端301的相关信息包括标识、IP地址、存有的文件标识、各文件对应的文件分片标识、各文件的地址、当前的下载速率、上传速率、下载进度和承载的客户端301数量等。 Each central file server 302 there server 303 and the client terminal information 301, the file server 303 includes identification information, IP address, the port, the agent used, there document identification, each file corresponding to the file fragment identifier, the address of each file, the current download rate and quantity 301 carried on the client; client-related information 301 includes an identifier, IP address, there document identification, each file corresponding to the file fragment identifier, the address of each file, the current download speed, upload speed, download progress and the number of clients 301 and other bearer. 中央服务器302可以通过与文件服务器303的交互获得文件服务器303的相关信息,可以通过接收客户端301发送的消息获得客户端301的相关信息。 Central server 302 can obtain information about the file server 303 by interacting with the file server 303, can obtain information about the client 301 by receiving the client message sent by the terminal 301.

中央服务器302收到客户端301发送的下载请求消息后,根据下载请求消息中的文件标识和已完整下载的文件分片的标识查询存有用户需要的数据的文件服务器303和客户端301,并从查询到的文件服务器303和客户端301中优先选择与发送请求的客户端301处于同一局域网的文件服务器303和客户端301,然后选择下载速率较好的文件服务器303和客户端301,最后选择承载的客户端301数量较少的文件服务器303和客户端301,然后将选择的文件服务器303和客户端301的下载路径和优先级等信息发送给发送请求消息的客户端301。 After the central server 302 receives the download client 301 sends the request message, according to the identifier in the file identifier and a download request message has been completely downloaded files fragment contains data required by the user queries the file server 303 and client 301, and 303 file server and the client to select the priority from the query to the file server 303 and the client 301 and sends the request of the client 301 in the same local area network terminal 301, and then choose to download a good rate of 303 file server and the client 301, the final choice the client 301 carries the smaller number of file server 303 and the client 301, then select the file server 303 and client terminal 301 sends a download path information and the priority transmission request message to the client terminal 301. 以及记录客户端301发送下载状态信息和数据信息。 And recording download client 301 transmits status information and data information. 当客户端301连接文件服务器303和客户端301时,将文件服务器303和客户端301所承载的客户端301数量加1。 When a client 301 connected to the file server 303 and the client 301, the file server 303 and the client 301 the number of clients 301 carried by one. 当客户端301暂停和停止下载时,将相应的文件服务器303和客户端301所承载的客户端301数量减1。 When the client 301 pause and stop downloading the appropriate file server 303 and the client 301 the number of clients 301 carried by minus 1. 由于文件服务器303的带宽是固定的,中央服务器302可根据文件服务器303的带宽和承载的客户端301数量计算出文件服务器303的下载速率。 Because the bandwidth of the file server 303 is fixed, the central server 302 may calculate the rate of file download server 303 according to the number of clients 301 and a file server bandwidth carrier 303.

参见图4A,本实施例中,中央服务器302包括接收单元401、查询单元402、选择单元403、存储单元404和发送单元405。 4A, the embodiment according to the present embodiment, the central server 302 includes a receiving unit 401, an inquiry unit 402, a selection unit 403, a storage unit 404 and transmission unit 405.

存储单元404存储各文件服务器303和客户端301的相关信息,文件服务器303的相关信息包括标识、IP地址、端口、所用的代理、存有的文件标识、各文件对应的文件分片标识、各文件的地址、当前的下载速率、上传速率、下载进度和承载的客户端301数量等;客户端301的相关信息包括标识、IP地址、存有的文件标识、各文件对应的文件分片标识、各文件的地址、当前的下载速率和承载的客户端301数量等。 The storage unit 404 stores each file server 303 and the client-related information 301, the file server information 303 includes an identifier, IP address, port, used agent, there document identification, each file corresponding to the file fragment identifier, each address of the file, the current download rate, the rate of upload, download progress and quantity 301 carried on the client; includes identification information 301, IP address, there is the client file identifier, each file corresponding to the file fragment identifier, the address of each file, the current download rate and the number of clients 301 and other bearers.

接收单元401接收客户端301发送的下载请求消息、下载状态信息和数据信息等,并将下载状态信息和数据信息存储到存储单元404。 The receiving unit 401 receives the client request message 301 sent by download, the download status information and data information, and download status and data information into the storage unit 404.

查询单元402根据下载请求消息中的文件标识和文件分片标识到存储单元404中查询存有用户需要的数据的文件服务器303和客户端301,并进一步获得文件服务器303和客户端301的下载路径、IP地址、下载速率和承载的客户端301数量等信息。 The inquiry unit 402 and the document identification file download request message fragment identification query to the storage unit 404 contains data the user needs a file server 303 and client 301, and further obtain the file server 303 and client terminal 301 of the download path , IP address, download speed and the number of the client 301 carry information.

选择单元403根据选择策略从查询到的文件服务器303和客户端301中优先选择与发送请求的客户端301处于同一局域网的文件服务器303和客户端301,然后选择下载速率较好的文件服务器303和客户端301,最后选择承载的客户端301数量较少的文件服务器303和客户端301;并且优先选择文件服务器303。 Select the unit 403 301 preference from the query and sends a request to the file server 303 and client selection policy based on the client 301 file server 303 and the client 301 in the same local area network, and then select the download speeds and better file server 303 the client 301, selects the bearer less the last number of clients 301 and a file server 303 client 301; and preferentially select the file server 303.

发送单元405向请求的客户端301发送包括选择的文件服务器303和客户端301的下载路径和优先级的下载策略。 It comprises a transmission unit 405 transmits the selected file server 303 and client terminal 301 and the download path priority policy download request to the client 301.

参见图4B,本实施例中客户端301包括接收单元410、选择单元411、连接单元412、控制单元413、存储单元414、发送单元415和用户接口416。 Referring to Figure 4B, in this embodiment the client 301 includes a receiving unit 410, selection unit 411, connection unit 412, a control unit 413, a storage unit 414, the transmission unit 415 and user interface 416.

存储单元414存储已下载的文件分片数据、已下载的文件分片的标识和大小、需要下载的文件的标识和文件分片的标识等。 The storage unit 414 stores pieces of the file data downloaded, the downloaded file identification and fragment size of the downloaded file identifier and file fragmentation logo. 存储单元414可以是软盘、硬盘和磁带等。 The storage unit 414 may be a floppy disk, a hard disk and a magnetic tape.

例如,存有已下载的文件分片的标识为aaa,该文件分片的大小为1m,该文件分片已下载第0k至第100k、第200k至第300k。 For example, there are pieces of the file downloaded is identified as AAA, the pieces of the file size is 1m, the first file has been downloaded 0k slice through 100K, the first through 200k 300k. 那么,只需下载第101k至第199k、第301k至1024k。 So, just download the first 101k through 199k, the first 301k to 1024k.

用户接口416接收用户的下载指示,通知控制单元413生成下载请求消息。 The user interface 416 receives a user's download instruction, the notification control unit 413 generates a download request message.

发送单元415根据控制单元413的指示向中央服务器302发送下载请求消息、报告下载状态信息和数据信息,以及在与文件服务器303和客户端301建立连接时发送的交互消息。 Transmission unit 415 according to an instruction control unit 302 transmits to the central server 413 a download request message, status information and report data to download information, and establish the interaction in the 301 message sent when the connection to the file server 303 and the client.

接收单元410接收中央服务器302发送的文件服务器303和客户端301的标识、IP地址、对应的文件标识和文件分片标识、下载速率、承载的客户端301数量、连接各文件服务器303和客户端301的优先级顺序等信息以及无法下载的通知等,接收文件服务器303和客户端301发送的数据和建立连接时的交互信息,并将数据传送给存储单元414并保存。 File server 303 and the client receiving unit 410 receives the central server 302 sends the terminal identifier 301, IP address, the corresponding file identifier and file fragments identified, download speed, the number of clients 301 bearers, connecting the file server 303 and the client priority order information, and the like 301 can not download notification, receiving the file server 303 and the client 301 sends the data and establishing interactive connection information, and transmits the data to the storage unit 414 and stored. 接收单元410包括从文件服务器接收下载数据的接收单元410,该接收单元410应用HTTP或FTP等传输协议;还包括从容户端301接收下载数据的接收单元410,该接收单元410应用比特流文件分发协议,当然也可以采用其他协议。 The receiving unit 410 includes a receiving means for receiving download data from the file server 410, the reception unit 410 use the HTTP or the like FTP transmission protocol; further comprising a calm client receiving unit 301 receives the downloaded data 410, the receiver unit 410 is applied bitstream file distribution agreement, of course, you can also use other protocols.

选择单元411根据文件服务器303和客户端301的标识和IP地址分析出与请求客户端301处于同一局域网的文件服务器303和客户端301并作为优先选择,或者根据下载速率优先选择下载速率较高的文件服务器303和客户端301,或者优先选择承载的客户端301数量较少的文件服务器303和客户端301。 The selection unit 411 based on the file server 303 and the client identifier 301 and the IP address of the analysis of the file server of the requesting client in the same local area network 301 and clients 301 and 303 as preferences, download or preferentially selecting the higher rate based download rate file server 303 and client 301, or a smaller number of preferences of the client 301 carries the file server 303 and the client 301. 将选择结果发送给控制单元413。 The selection result to the control unit 413.

控制单元413生成下载请求消息;根据接收到的优先级顺序或者根据选择单元411提供的优先级顺序指示连接单元412连接文件服务器303和客户端301;定期指示发送单元向中央服务器302发送下载状态信息和数据信息,以及在暂停或停止下载时也指示发送单元向中央服务器302发送下载状态信息和数据信息。 The control unit 413 generates a download request message; or indicates a connecting unit according to the priority order of selection unit 411 provided in accordance with the priority order of the received 412 connecting file server 303 and the client 301; periodic indication sending unit 302 transmits a download status information to the central server and data information, and when the download is also paused or stopped transmitting unit transmits indication information and download status information to the central data server 302.

连接单元412根据控制单元413的指示,通过接收单元410和发送单元415与文件服务器303和客户端301进行交互,建立与各文件服务器303和客户端301的连接。 Connection unit 412 according to an instruction of the control unit 413, 415 through the receiving unit and transmitting unit 410 with the file server 303 and the clients 301 interact to establish a connection with the file server 303 and the client 301.

参见图5,本实施例中基于比特流文件分发协议的下载数据的主要方法流程如下: Referring to Figure 5, the main process of the method based on the downloaded data bitstream file distribution protocol according to the present embodiment is as follows:

步骤501:客户端301(以下称请求客户端301)向中央服务器302发送下载请求消息,该消息包括请求下载的文件的标识。 Step 501: The client 301 (hereinafter referred to as the requesting client 301) sends a download request message to the central server 302, the message includes an identification of the file requested to be downloaded.

步骤502:中央服务器302根据收到的下载请求消息查询存有所述文件的数据的文件服务器303和客户端301,并从查询到的文件服务器303和客户端301中选择可提供较好下载速率和传输质量的文件服务器303和客户端301。 Step 502: the central server 302 request the message there query data file according to the received download file server 303 and client 301, and select from the query to the file server 303 and the client 301 may provide better download rate and the transmission quality of the file server 303 and the client 301.

步骤503:中央服务器302向请求客户端301发送下载策略,该下载策略包括选择的文件服务器和客户端的下载路径等。 Step 503: the central server 302 to the client 301 sends a request to download the policy, the policy includes downloading a file server and the client to download the selected path and the like.

步骤504:请求客户端301根据收到的下载策略同时从文件服务器303和客户端301下载需要的数据。 Step 504: 301 according to the requesting client download policy received from both the file server and the client data 303 301 download the required end.

参见图6,本实施例中基于比特流文件分发协议的下载数据的具体方法流程如下:步骤601:请求客户端301根据用户的指示生成并向中央服务器302发送下载请求消息,下载请求消息包括需要下载的文件的签名值(为一种标识,可以是数字和字母的组合)、需要下载的文件分片的总数、已下载的各文件分片的大小和标识,或者还包括需要下载的文件分片标识、请求客户端301的IP地址(包括公网IP和局域网IP)、路由信息等。 Referring to Figure 6, the present embodiment based on the particular embodiment of the process flow bitstream file distribution protocol to download the data as follows: Step 601: The client requests 301 and 302 transmits a download request message generated according to an instruction of the central server the user, the download request message including the need downloaded file signature value (as a logo, may be a combination of numbers and letters), the total number of pieces of the file to be downloaded, and downloading the respective files and the size of the slice identifier, or the file to be downloaded further includes sub sheet identifier, the IP address of the requesting client 301 (including the public IP address and LAN IP), routing information, etc. 如果请求客户端301是首次请求下载该文件,那么已经下载的文件分片标识为空或者为0。 If the request is the first client 301 requests to download the file, then the file has been downloaded fragments identified as empty or zero.

已下载的文件分片有多种理解方式,如一种是完整下载文件分片后认为该文件分片已下载,那么在这种方式下下载请求消息可以不包括已下载的文件分片的大小;如另一种方式是只下载了文件分片的部分数据,则认为该文件分片已下载,那么在这种方式下下载请求消息需要包括已下载的文件分片的大小,中央服务器302可根据文件分片的大小判断请求客户端301是否需要继续下载该文件分片。 Pieces of the file downloaded appreciated a variety of ways, such as one complete file of the download file fragment that has been downloaded, then in this download request message may not include the size of the downloaded file fragment after fragment; the other way is to download only part of the data pieces of the file, the file is considered fragment downloaded, then in this request message needs to include the download size of the downloaded pieces of the file, the central server 302 according to pieces of the file size is determined whether the requesting client 301 needs to continue to download the file fragment.

步骤602:中央服务器302接收下载请求消息并记录请求客户端301的标识、端口号、文件存储路径、IP地址和已经下载的文件分片标识等,根据下载请求消息中的文件的签名值和文件分片的标识查询存有未下载的文件分片的文件服务器303和客户端301。 Step 602: the central server 302 receives the download request message and records the client's request identifier 301, a port number, file storage path, IP address, already downloaded files slice identification, etc., requested signature value and the files of the message in accordance downloads identify fragments of inquiry there are not pieces of the file downloaded file server 303 and the client 301.

步骤603:中央服务器302判断是否可以查询到存有文件分片的文件服务器303和客户端301,若是,则继续步骤604,否则,通知请求客户端301无法下载。 Step 603: the central server 302 can query to determine whether there pieces of the file file server 303 and client 301, and if so, proceed to Step 604, otherwise, inform the requesting client 301 can not be downloaded.

步骤604:中央服务器302进一步获得查询到的文件服务器303和客户端301的IP地址、下载速率和承载的客户端301数量等信息。 Step 604: the central server 302 to obtain further query file server 303 and the IP address of the client 301, the download speed and the number of the client 301 carry information.

步骤605:中央服务器302根据下载请求消息获知请求客户端301的局域网IP,或者根据路由信息分析出局域网IP,或者根据请求客户端301的标识查询到其IP地址和路由信息等。 Step 605: the central server 302 according to the download request message to know the requesting client IP LAN 301, or analyze the LAN IP routing information, or query to its IP address and routing the request according to the identification information of the client 301. 中央服务器302根据预先制定的选择策略从查询到的文件服务器303和客户端301中选择可以提供较好下载速率和传输质量的文件服务器303和客户端301,并根据选择策略为选择的文件服务器303和客户端301设定优先级。 Select a query from the central server 302 to the file server 303 and the client 301 may provide a better download speed and transmission quality in accordance with pre-established selection policy file server 303 and client 301, and according to selection policy for the selected file server 303 301 customers and prioritize end. 选择策略如下:步骤605A:根据请求客户端301的局域网IP、文件服务器303和客户端301的IP地址,优先选择与请求客户端301处于同一局域网的文件服务器303和客户端301,或者选择与请求客户端301路由距离较近的文件服务器303和客户端301,例如属于同一的路由子网的文件服务器303和客户端301。 Select the strategy is as follows: Step 605A: at the request of the client LAN IP 301, file server 303 and the client IP address 301, preferred 301 file server 303 and the client are in the same local area network of the requesting client terminal 301, or select and request the client 301 routes the short distance of 303 file server and the client 301, for example, belong to the same subnet routing file server 303 and the client 301.

步骤605B:中央服务器302从其它的查询到的文件服务器303和客户端301中选择下载速率较高的文件服务器303和客户端301。 Step 605B: the central server 302 from another query to the file server 303 and the client 301 selects a higher rate of file download server 303 and the client 301. 较高的下载速率是指超过预设的门限值的下载速率视为较高的下载速率,或者将下载速率由高到低进行排序,前m个下载速率视为较高的下载速率,其中m为预设的参数值。 Refers to a higher download speed download rate exceeds a preset threshold value considered high download speed, the download rate or sorted in descending order, the first m download rate considered high download speed, wherein m is a preset parameter value.

步骤605C:中央服务器302再从其它的查询到的文件服务器303和客户端301中选择承载的客户端301数量较少的文件服务器303和客户端301。 Step 605C: and from the central server 302 to query the other file server 303 and the client 301 selects a bearer in fewer clients 301 and a file server 303 client 301. 较少的承载的客户端301数量是指低于预设的门限值的承载的客户端301数量视为较少的承载的客户端301数量,或者将承载的客户端301数量由少到多进行排序,前n个承载的客户端301数量视为较少的承载的客户端301数量,其中n为预设的参数值。 Number of clients 301 bearer refers less number of clients 301 is below a predetermined load threshold bearer considered less number of clients 301, 301 or the number of clients of the carrier from less to more to sort, the top n number of clients 301 is regarded as the carrier 301 less the number of clients bearer, where n is a preset parameter value.

上述选择步骤可以任选其一或是它们的组合,一种较佳的实现方式是按照步骤605A、605B和605C的顺序执行,并且在每步中优先选择文件服务器303。 Said selecting step may optionally one, or a combination thereof, a preferred implementation is performed in the order of the steps 605A and 605B 605C, and the file server 303 in preference each step. 本实施例中中央服务器302和请求客户端301的选择策略相同。 Examples central server 302 and the client requests the same selection policy 301 of the present embodiment.

步骤606:中央服务器302向请求客户端301发送下载策略,下载策略包括下载路径和选择的文件服务器303和客户端301的优先级。 Step 606: the central server 302 to the client 301 sends a request to download a policy, the policy including download download path and file server 303 and client terminal 301 selected by the priority. 对于文件服务器303,下载路径是指统一资源定位(URL)地址;对于客户端301,下载路径是指IP地址和文件在客户端301上的存储地址。 For file server 303, the download path is the Uniform Resource Locator (URL) address; the client 301, the download path is the IP address and the address files stored on the client 301. 优先级由高到低的顺序为局域网中的文件服务器303、客户端301、下载速率较好的文件服务器303、客户端301、承载的客户端301数量较少的文件服务器303、客户端301。 Descending order of priority in the LAN file server 303, client 301, server file download rate is preferably 303, the client 301, the client 301 carries a small number of the file server 303, the client 301. 下载策略还可以包括文件服务器303的标识、IP地址、端口号、文件服务器303所用的代理文件标识、文件分片标识、下载速率和承载的客户端301数量等信息,以及客户端301的标识、文件标识、文件分片标识、下载速率和承载的客户端301数量等信息。 Download policy may further include a proxy file identifies the file server 303, IP address, port number, the file server 303 with the identity of the file fragments identified, download speed and client bearer side 301 number and other information, and identifies the client 301, file identifier, a file slice identifier, download speed and quantity 301 carried on the client information.

步骤607:请求客户端301根据收到的下载策略下载需要的数据。 Step 607: According to the data request from the client 301 download download strategy you need to receive the. 定期向中央服务器302发送下载状态信息和数据信息,以及在暂停和停止下载时,也向中央服务器302发送下载状态信息和数据信息。 Periodically sends status information and download information to the central data server 302, and when the stop and pause download or download 302 sends status and data information to the central server. 请求客户端301根据下载策略中的优先级顺序,优先连接局域网内的文件服务器303和客户端301,再按照下载速率由高到低的顺序和承载的客户端301数量由少到多的顺序连接文件服务器303和客户端301。 The download request from the client 301 policy priority order, the priority file server 303 and the client is connected within the LAN terminal 301, and then download rate in accordance with a descending order of the number of clients 301 and the connector carried by the order of less to more 303 file server and the client 301. 从连接到的文件服务器303和客户端301中查询需要下载的数据并进行下载。 Queries need to download the data from the connection to the file server 303 and the client 301 and download them. 请求客户端301启用较多的线程从局域网内的文件服务器303和客户端301下载数据,较多的线程是指占总线程数的50%以上视为较多的线程,或者比从其它文件服务器303和客户端301下载时启用的线程数多视为较多的线程。 The requesting client 301 to enable more thread data from the file server 303 and client LAN 301 downloads, more threads means that more than 50% of the total number of threads regarded as more threads, or from other than the file server 303 and 301 clients enabled when the number of threads to download more and more seen as a thread.

若在步骤606中中央服务器302向请求客户端301发送的信息中只包括文件服务器303和客户端301的标识时,则在步骤607中,请求客户端301可以根据文件服务器303和客户端301的标识查询到文件服务器303和客户端301的IP地址、端口号、文件服务器303所用的代理、文件地址、下载路径、文件标识、文件分片标识、下载速率和承载的客户端301数量等信息。 If in step the central server 606,302 to the requesting client information sending 301 only includes a file server 303 and the client identification 301 ends, in step 607, the requesting client 301 may be based on the file server 303 and the client 301 identify the query to the file server 303 and the client agent IP address, port number, the file server 303 side 301 being used, the file address, the download path, file identification, file fragmentation ID, download speed and the number of clients 301 carry other information. 请求客户端301也可以根据下载策略中的文件服务器303和客户端301的IP地址分析出文件服务器303和客户端301是否与本客户端301处于同一局域网,优先选择同一局域网的文件服务器303和客户端301进行下载;根据下载速率和承载的客户端301数量选择可提供较好的下载速率和下载质量的文件服务器303和客户端301进行下载。 Analysis of the requesting client 301 IP address 301 can also end under the download policy file server 303 and the customer file server 303 and the client 301 whether this client 301 in the same local area network, prefer the same local area network file server 303 and the client end 301 for download; may provide better file server 303 and the client 301 downloads the download rate and quality of the rate and amount of downloading to download the client 301 according to the selected bearer. 或者请求客户端301在下载过程中,根据预先设定的选择策略随着网络环境的变化重新从已连接的文件服务器303和客户端301中选择下载,并且可以中断无法提供较好传输速率的文件服务器303和客户端301的连接。 Or requesting client 301 during the download process, re-selected according to pre-set selection policy with the change of environment from the network file server 303 and client 301 connected downloaded, files can not be interrupted and can provide better transfer rate 303 connect to the server and the client 301.

步骤608:中央服务器302接收并记录下载状态信息和数据信息。 Step 608: the central server 302 receives and records the download status and data information. 当请求客户端301开始连接各文件服务器303和客户端301时,或者中央服务器302将文件服务器303和客户端301的相关信息发送给请求客户端301时,中央服务器302将请求客户端301连接的文件服务器303和客户端301所承载的客户端301数量加1;当请求客户端301暂停或停止下载时,将请求客户端301连接的文件服务器303和客户端301所承载的客户端301数量减1。 When the requesting client 301 starts to connect each of the file server 303 and the client 301 or the central server 302 to file server 303 and the client-related information 301 to the requesting client 301, the central server 302 to request 301 connected to the client number of clients 301 file server 303 and the client 301 carry plus 1; when requesting client 301 to suspend or stop the download, the request file server 303 and the customer client 301 is connected to terminal 301 carried by the client 301 number Save 1. 中央服务器302当接收到的承载的客户端301数量与本地记录的数量不符时,根据接收到的承载的客户端301数量更新本地的记录。 The central server 302 when the client 301 does not match the number of the number recorded locally received bearer, according to the received bearer customer terminal 301 updates the local number of records.

在步骤601中,下载请求消息可以只包括请求下载的文件的标识。 In step 601, the download request message may include only the identifier of the file requested to be downloaded. 已下载的文件分片的标识等信息可以在以后的消息中上报给中央服务器302。 Downloaded pieces of the file identification information to the central server 302 can be reported in a future message. 在步骤602至步骤606中,中央服务器302将与所述文件标识对应的文件服务器303和客户端301的下载路径发送给请求客户端301。 In step 602 to step 606, the central server 302 corresponding to the file identifier and the file server 303 downloads the client terminal 301 transmits the path to the requesting client 301. 在步骤607中,请求客户端301根据下载策略与文件服务器303和客户端301建立连接,并查询各文件服务器303和客户端301是否存有请求客户端301需要下载的数据,下载查询到的数据,中断未存有需要的数据的文件服务器303和客户端301的连接。 In step 607, the client 301 requests to establish a connection to download a policy based on the file server 303 and client 301, and 303 inquiries each file server and the client requests data 301 whether there need to download the client 301, and download the data to the query connecting 301 interrupts required data is not stored in the file server 303 and the client.

参见图7,本实施例中中央服务器302根据选择策略选择可提供较好的传输速率的文件服务器303和客户端301时的下载数据的方法,该方法不限于比特流文件分发协议,该方法的流程如下:步骤701:请求客户端301根据用户的指示生成并向中央服务器302发送下载请求消息,下载请求消息包括需要下载的文件的签名值。 Referring to Figure 7, the central server 302 in the embodiment according to a selection policy to select transmission rates may provide better file server according to the present embodiment of the method of downloading data when clients 303 and 301, the method is not limited to a bitstream file distribution protocol, the method process is as follows: step 701: the client 301 generates a request to the central server 302 sends an indication of the user download request message, a download request message including the signature value of the file to be downloaded.

步骤702:中央服务器302接收下载请求消息并记录请求客户端301的标识、端口号、文件存储路径、IP地址和已经下载的文件分片标识等,根据下载请求消息中的文件的签名值查询存有所述文件的数据的文件服务器303和客户端301。 Step 702: the central server 302 receives the download request message and records the client's request identifier 301, a port number, file storage path, IP address, and the file has been downloaded slice identifier like the signature value query request file message in accordance with download memory the data file is a file server 303 and the client 301.

步骤703:中央服务器302判断是否可以查询到存有文件分片的文件服务器303和客户端301,若是,则继续步骤704,否则,通知请求客户端301无法下载。 Step 703: the central server 302 can query to determine whether there pieces of the file file server 303 and client 301, and if so, proceed to Step 704, otherwise, inform the requesting client 301 can not be downloaded.

步骤704:中央服务器302进一步获得查询到的文件服务器303和客户端301的IP地址、下载速率和承载的客户端301数量等信息。 Step 704: the central server 302 to obtain further query file server 303 and the IP address of the client 301, the download speed and the number of the client 301 carry information.

步骤705:中央服务器302根据下载请求消息获知请求客户端301的局域网IP,或者根据路由信息分析出局域网IP,或者根据请求客户端301的标识查询到其IP地址和路由信息等。 Step 705: the central server 302 according to the download request message to know the requesting client IP LAN 301, or analyze the LAN IP routing information, or query to its IP address and routing the request according to the identification information of the client 301. 中央服务器302根据预先制定的选择策略从查询到的文件服务器303和客户端301中选择可以提供较好下载速率和传输质量的文件服务器303和客户端301,并根据选择策略为选择的文件服务器303和客户端301设定优先级。 Select a query from the central server 302 to the file server 303 and the client 301 may provide a better download speed and transmission quality in accordance with pre-established selection policy file server 303 and client 301, and according to selection policy for the selected file server 303 301 customers and prioritize end.

步骤706:中央服务器302向请求客户端301发送下载策略,下载策略包括下载路径和选择的文件服务器303和客户端301的优先级。 Step 706: the central server 302 to the client 301 sends a request to download a policy, the policy including download download path and file server 303 and client terminal 301 selected by the priority.

步骤707:请求客户端301根据收到的下载策略下载需要的数据。 Step 707: According to the data request from the client 301 download download strategy you need to receive the. 定期向中央服务器302发送下载状态信息和数据信息,以及在暂停和停止下载时,也向中央服务器302发送下载状态信息和数据信息。 Periodically sends status information and download information to the central data server 302, and when the stop and pause download or download 302 sends status and data information to the central server. 请求客户端301根据下载策略中的优先级顺序,优先连接局域网内的文件服务器303和客户端301,再按照下载速率由高到低的顺序和承载的客户端301数量由少到多的顺序连接文件服务器303和客户端301。 The download request from the client 301 policy priority order, the priority file server 303 and the client is connected within the LAN terminal 301, and then download rate in accordance with a descending order of the number of clients 301 and the connector carried by the order of less to more 303 file server and the client 301. 从连接到的文件服务器303和客户端301中查询需要下载的数据并进行下载。 Queries need to download the data from the connection to the file server 303 and the client 301 and download them. 请求客户端301启用较多的线程从局域网内的文件服务器303和客户端301下载数据。 Request client to enable more threads 301 301 303 to download data from the file server and the client on the LAN side.

若在步骤706中,中央服务器302向请求客户端301发送的信息中只包括文件服务器303和客户端301的标识时,则在步骤707中,请求客户端301可以根据文件服务器303和客户端301的标识查询到文件服务器303和客户端301的IP地址、端口号、文件服务器303所用的代理、文件地址、下载路径、文件标识、文件分片标识、下载速率和承载的客户端301数量等信息。 If in step 706, the central server 302 to the requesting client information sending 301 only includes a file server 303 and the client identifier 301, then in step 707, the requesting client 301 may be based on the file server 303 and the client 301 identifying queries to the file server 303 and the client IP address, port number, the file server 303 side 301 of the used agents, file address, the download path, file identification, file fragmentation ID, download speed and the number of clients 301 carries information . 请求客户端301也可以根据下载策略中的文件服务器303和客户端301的IP地址分析出文件服务器303和客户端301是否与本客户端301处于同一局域网,优先选择同一局域网的文件服务器303和客户端301进行下载;根据下载速率和承载的客户端301数量选择可提供较好的下载速率和下载质量的文件服务器303和客户端301进行下载。 Analysis of the requesting client 301 IP address 301 can also end under the download policy file server 303 and the customer file server 303 and the client 301 whether this client 301 in the same local area network, prefer the same local area network file server 303 and the client end 301 for download; may provide better file server 303 and the client 301 downloads the download rate and quality of the rate and amount of downloading to download the client 301 according to the selected bearer. 或者请求客户端301在下载过程中,根据预先设定的选择策略随着网络环境的变化重新从已连接的文件服务器303和客户端301中选择下载,并且可以中断无法提供较好传输速率的文件服务器303和客户端301的连接。 Or requesting client 301 during the download process, re-selected according to pre-set selection policy with the change of environment from the network file server 303 and client 301 connected downloaded, files can not be interrupted and can provide better transfer rate 303 connect to the server and the client 301.

步骤708:中央服务器302接收并记录下载状态信息和数据信息。 Step 708: the central server 302 receives and records the download status and data information.

本实施例通过文件服务器为请求客户端提供下载服务,利用了文件服务器的高性能和非易修改性,提升了客户端的下载速率和下载质量。 The present embodiment provides a download service request from the client through the file server, using a high performance and ease of modification of non-file server, the client downloads the upgrade rate and quality of the download. 同时利用了客户端来分担服务器的承载,并且可以节省网络成本。 While using a client server to share the bearer, the network and the cost can be saved. 本实施例还通过中央服务器制定下载策略,从可提供数据下载的文件服务器和客户端中选择可提供下载速率较好的文件服务器和客户端提供给请求客户端,即保证了客户端的下载速率又节省了网络资源。 This embodiment also developed download policy through the central server, from the file server and the client may provide data download selected available for download rate better file server and the client to the requesting client, i.e. to ensure that the download rate client and saving network resources. 本实施例提供了应用于各种传输协议的下载数据的方法。 The present embodiment provides a method used in a variety of transport protocols download data.

显然,本领域的技术人员可以对本发明进行各种改动和变型而不脱离本发明的精神和范围。 Obviously, those skilled in the art can make various modifications and variations to the invention without departing from the spirit and scope of the invention. 这样,倘若对本发明的这些修改和变型属于本发明权利要求及其等同技术的范围之内,则本发明也意图包含这些改动和变型在内。 Thus, if part of the claimed invention for such modifications and variations within the scope of the present invention and equivalents thereof, the present invention intends to include these modifications and variations.

Claims (26)

1.一种基于比特流文件分发协议的下载数据的方法,其特征在于,包括以下步骤:客户端向中央服务器发送下载请求,该下载请求包括请求下载的文件的标识;所述中央服务器根据所述文件的标识查询存有所述文件的数据的文件服务器和客户端;所述中央服务器向发送所述下载请求的客户端发送下载策略,该下载策略包括存有所述文件的数据的文件服务器和客户端的下载路径;发送所述下载请求的客户端根据收到的下载策略同时从文件服务器和客户端下载需要的数据。 1. A method of bitstream file distribution protocol based download data, characterized by comprising the steps of: the client sends a download request to the central server, the download request comprising a request to download a file identifier; according to the central server identifying said file there query data file of the file server and the client; the policy is downloaded to the central server sends the client sends the download request, the download of the policy includes a data file there is a file server and client download path; transmitting said download request to download data to the client at the same time from the file server and the client according to the received download policy.
2.如权利要求1所述的下载数据的方法,其特征在于,所述中央服务器根据预先制定的选择策略从查询到的文件服务器和客户端中选择文件服务器和客户端。 2. The method of downloading data according to claim 1, wherein said central file server and the server selects the query from the client to the file server and the client according to a selection of pre-established policy.
3.如权利要求2所述的下载数据的方法,其特征在于,所述中央服务器根据所述选择策略为选择的文件服务器和客户端设定优先级,并将该优先级携带在下载策略中发送给发送所述下载请求的客户端。 3. The method according to claim 2 download data, wherein the central server is set priority selected file server and client according to the selection policy and the priority of the policy carried in the download transmitting the download request to a client.
4.如权利要求3所述的下载数据的方法,其特征在于,发送所述下载请求的客户端按照下载策略中的优先级由高到低的顺序连接文件服务器和客户端。 The method according to the downloaded data as claimed in claim 3, wherein the download request sending client in a descending order of download priority connection policy file servers and clients.
5.如权利要求2或3所述的下载数据的方法,其特征在于,所述选择策略包括下述选择方式之一或它们的组合:所述中央服务器从查询到文件服务器和客户端中优先选择与所述发送下载请求的客户端处于同一局域网的文件服务器和客户端;或者所述中央服务器从查询到文件服务器和客户端中优先选择下载速率不低于预设的门限值的文件服务器和客户端,或者从查询到文件服务器和客户端中按下载速率由高到低的顺序选择文件服务器和客户端;或者所述中央服务器从查询到文件服务器和客户端中优先选择承载的客户端数量不大于预设的门限值的文件服务器和客户端;或者从查询到文件服务器和客户端中按承载的客户端数量由小到大的顺序选择文件服务器和客户端。 5. The method of claim 2 or claim 3 download data, wherein said selection policy comprises selecting one of the following ways or a combination thereof: the central server in priority from the query to the file server and the client threshold of the file server or from a central server download rate selection query to the file server and the client is not lower than the preset priority; selecting a download request transmitted to the client in the file server and the client in the same local area network and a client, or a query to select a file from the server and the client in descending order according to the rate of file download server and client; or a query from the central server to the file server and the client selects the bearer priority of the client the number is not greater than the predetermined threshold file server and client; or from the query to the file server and the client in ascending order of the number of clients bearer select the file server and the client.
6.如权利要求5所述的下载数据的方法,其特征在于,所述中央服务器在选择文件服务器和客户端时优先选择文件服务器。 6. The method of claim 5, wherein data downloaded claim, wherein said central server is preferred when selecting the file server and the file server client.
7.如权利要求5所述的下载数据的方法,其特征在于,发送所述下载请求的客户端从同一局域网的文件服务器和客户端下载数据时启用的线程数不少于从其它文件服务器和客户端下载时启用的线程数。 7. The method of claim 5, wherein the downloaded data, characterized in that the number of threads transmits the download request to the client to enable the file server and the client to download data from the same local area network file server, and the other from less than the number of threads to enable the client to download.
8.如权利要求1所述的下载数据的方法,其特征在于,客户端根据下载策略提供的文件服务器和客户端中选择文件服务器和客户端下载数据。 8. The method of downloading data according to claim 1, characterized in that the client select the file server and the client to download data file servers and client download policy provided.
9.如权利要求1所述的下载数据的方法,其特征在于,所述下载请求还包括请求的文件分片的总数、请求的各文件分片的大小和标识。 9. The method of downloading data according to claim 1, wherein the download request further includes the total number of pieces of the file request, the request of each file and the size of the fragment identification.
10.如权利要求1所述的下载数据的方法,其特征在于,所述中央服务器接收下载请求时,记录发送所述下载请求的客户端的文件保存路径、端口号和IP地址。 10. The method of downloading data according to claim 1, wherein the central server receives the download request, the client sends the download request recording of the file path end, the port number and IP address.
11.如权利要求1所述的下载数据的方法,其特征在于,所述中央服务器未查询到文件服务器和客户端时,通知发送所述下载请求的客户端无法下载。 11. The method of downloading data according to claim 1, wherein the central server is not a query to the file server and the client, the download request notification client can not be downloaded.
12.如权利要求1所述的下载数据的方法,其特征在于,发送所述下载请求的客户端从文件服务器下载数据时应用与服务器之间的传输协议,从客户端下载数据时应用比特流文件分发协议。 12. The method of downloading data according to claim 1, wherein sending the download request from the client to download the file server when the data transfer protocol between the application and the server application bit stream when downloading data from the client file distribution protocol.
13.如权利要求1所述的下载数据的方法,其特征在于,当发送所述下载请求的客户端开始连接文件服务器和客户端时,所述中央服务器将与发送所述下载请求的客户端连接的文件服务器和客户端所承载的客户端数量加1;或者所述中央服务器向发送所述下载请求的客户端发送所述下载策略时,将所述查询到的文件服务器和客户端所承载的客户端数量加1。 13. The method of downloading data according to claim 1, wherein, when transmitting the download request to the client starts to connect the file server and the client, with the central server transmits the download request of the client client file number of servers and clients connected to the carrier plus 1; or when the central policy server to send the download client sends the download request, the query to the file server and the client are carried number of clients increased by one.
14.如权利要求1所述的下载数据的方法,其特征在于,当发送所述下载请求的客户端暂停或停止下载数据时,所述中央服务器将与该发送下载请求的客户端连接的文件服务器和客户端所承载的客户端数量减1。 14. The method of downloading data according to claim 1, wherein, when transmitting the download request to pause or stop the client to download data, the central server will send a request to download the file client connections number of clients the server and client carried minus 1.
15.如权利要求1所述的下载数据的方法,其特征在于,发送所述下载请求的客户端开始下载数据后,定期向所述中央服务器发送下载状态信息和数据信息,所述中央服务器接收并记录下载状态信息和数据信息;和/或发送所述下载请求的客户端在暂停和停止下载数据时,向所述中央服务器发送下载状态信息和数据信息,所述中央服务器接收并记录下载状态信息和数据信息;其中,所述下载状态信息包括下载速率、上传速率和下载进度;所述数据信息包括已下载的文件分片的标识。 15. The method of downloading data according to claim 1, characterized in that, after the client sends the download request to download data starts, periodically send the download status and data information to the central server, the central server receives and recording download status and data information; and / or sending the download request when the client pause and stop downloading the data, send the download status and data information to the central server, the central server receives and records the download status information and data information; wherein the status information includes downloading the download rate, upload and download progress rate; the identification information comprises data downloaded file fragment.
16.一种下载数据的方法,其特征在于,包括以下步骤:客户端向中央服务器发送下载请求,该下载请求包括请求下载的文件的标识;所述中央服务器根据所述文件的标识查询存有所述文件的数据的文件服务器和客户端,并根据预先制定的选择策略从查询到的文件服务器和客户端中选择文件服务器和客户端;所述中央服务器向发送所述下载请求的客户端发送下载策略,该下载策略包括选择的文件服务器和客户端的下载路径;发送所述下载请求的客户端根据收到的下载策略同时从文件服务器和客户端下载需要的数据。 16. A method for downloading data, characterized by comprising the steps of: the client sends a download request to the central server, the download request comprising a request to download a file identifier; query the central server according to the identifier of the file there the file server and client data files, and select a file from the server and the client to query the file server and the client according to a selection of pre-established policy; said central server transmits the download request to transmit the client download policy, policy comprises selecting the download file server and client download path; sending the data download request to download client policy according to the received downloaded from the file server and the client needs.
17.如权利要求16所述的下载数据的方法,其特征在于,所述中央服务器根据所述选择策略为选择的文件服务器和客户端设定优先级,并将该优先级携带在下载策略中发送给发送所述下载请求的客户端。 17. The method of downloading data according to claim 16, wherein said central server set priority selected file server and client according to the selection policy and the priority of the policy carried in the download transmitting the download request to a client.
18.如权利要求17所述的下载数据的方法,其特征在于,发送所述下载请求的客户端按照下载策略中的优先级由高到低的顺序连接文件服务器和客户端。 18. The method of downloading data according to claim 17, wherein the download request sending client in a descending order of download priority connection policy file servers and clients.
19.如权利要求16所述的下载数据的方法,其特征在于,客户端根据预先制定的选择策略从连接到的文件服务器和客户端中选择文件服务器和客户端并进行下载。 19. The method of downloading data according to claim 16, wherein the client according to a selection policy to select from pre-established connection to the file server and the file server and the client and the client download.
20.如权利要求17或19所述的下载数据的方法,其特征在于,所述选择策略包括下述选择方式之一或它们的组合:所述中央服务器从查询到文件服务器和客户端中优先选择与所述发送下载请求的客户端处于同一局域网的文件服务器和客户端;或者所述中央服务器从查询到文件服务器和客户端中优先选择下载速率不低于预设的门限值的文件服务器和客户端,或者从查询到文件服务器和客户端中按下载速率由高到低的顺序选择文件服务器和客户端;或者所述中央服务器从查询到文件服务器和客户端中优先选择承载的客户端数量不大于预设的门限值的文件服务器和客户端;或者从查询到文件服务器和客户端中按承载的客户端数量由小到大的顺序选择文件服务器和客户端。 20. The method of downloading data 17 or claim 19, wherein said selection policy comprises selecting one of the following ways, or a combination thereof: the central server in priority from the query to the file server and the client threshold of the file server or from a central server download rate selection query to the file server and the client is not lower than the preset priority; selecting a download request transmitted to the client in the file server and the client in the same local area network and a client, or a query to select a file from the server and the client in descending order according to the rate of file download server and client; or a query from the central server to the file server and the client selects the bearer priority of the client the number is not greater than the predetermined threshold file server and client; or from the query to the file server and the client in ascending order of the number of clients bearer select the file server and the client.
21.如权利要求20所述的下载数据的方法,其特征在于,所述中央服务器在选择文件服务器和客户端时优先选择文件服务器。 21. The method according to claim 20 to download data, wherein the central server is preferred when selecting the file server and the file server client.
22.如权利要求20所述的下载数据的方法,其特征在于,发送所述下载请求的客户端从同一局域网的文件服务器和客户端下载数据时启用的线程数不少于从其它文件服务器和客户端下载时启用的线程数。 22. The method of downloading data according to claim 20, characterized in that the number of threads sending the download request of the client to enable the client file server and downloading data from the same local area network file server, and the other from less than the number of threads to enable the client to download.
23.一种服务器,其特征在于,包括:用于接收客户端发送的下载请求的单元,该下载请求包括请求下载的文件的标识;用于存储文件服务器和客户端的相关信息的单元;用于根据所述文件的标识查询存有所述文件的数据的文件服务器和客户端的单元;用于根据预先制定的选择策略从查询到的文件服务器和客户端中选择文件服务器和客户端的单元;用于向发送所述下载请求的客户端发送下载策略的单元,该下载策略包括选择的文件服务器和客户端的下载路径。 23. A server, comprising: means for receiving a download request sent by the client, the download request comprising a request to download a file identifier; means for storing information related to the file server and the client; a there query data file according to the identifier of the file server and the client; means for selecting the file server and the client unit from the query to the file server and the client according to a selection of pre-established policy; for download policy sending unit to the client sending the download request, the download policy includes a file server and the client to download the selected path.
24.一种基于比特流文件分发协议的客户端,其特征在于,包括:发送单元,用于根据控制单元的指示向中央服务器发送下载请求,该下载请求包括请求下载的文件的标识;接收单元,用于接收中央服务器发送的下载策略,该下载策略包括文件服务器和客户端的下载路径,以及从文件服务器和客户端接收下载的数据;控制单元,用于根据所述文件服务器和客户端的下载路径指示连接单元与相应的文件服务器和客户端建立连接,并查询本客户端需要下载的数据并进行下载;连接单元,用于根据所述控制单元的指示,通过所述接收单元和发送单元与所述文件服务器和客户端进行交互,建立与文件服务器和客户端的连接。 24. A bitstream file distribution protocol based on a client, characterized by comprising: a sending unit, configured to send a download request to the central server according to an instruction of the control unit, the download request comprising a request to download a file identifier; receiving unit , the central server for downloading the policy received transmission, which comprises a download path policy download a file server and the client, and the data received from the downloaded file server and the client; download path control unit, according to the file server and the client indicating means connected to establish a respective file server and the client is connected, and queries the client to download this data and downloading; connecting means according to the control instruction unit by the receiving unit and the transmitting unit readme file servers and clients interact, establish a file server and client connections.
25.一种基于比特流文件分发协议的通信系统,其特征在于,包括:客户端,用于向中央服务器发送下载请求,并根据收到的下载策略下载需要的数据;其中,所述下载请求包括请求下载的文件的标识;所述中央服务器根据所述文件的标识查询存有所述文件的数据的文件服务器和客户端,以及向发送所述下载请求的客户端发送下载策略,该下载策略包括存有所述文件的数据的文件服务器和客户端的下载路径。 25. A communication system based on the bitstream file distribution protocol, characterized by comprising: a client, configured to send a download request to the central server, and download the data according to the received policy needed to download; wherein the download request It includes an identification of the file requested to be downloaded; query the central server of the file contains data file server and the client according to the identifier of the file, and transmits to the download policy client sends the download request, the download policy there comprises a download path of the data file to the file server and the client.
26.一种通信系统,其特征在于,包括:客户端,用于向中央服务器发送下载请求,并根据收到的下载策略下载需要的数据;其中,所述下载请求包括请求下载的文件的标识;所述中央服务器根据所述文件的标识查询存有所述文件的数据的文件服务器和客户端,并根据预先制定的选择策略从查询到的文件服务器和客户端中选择文件服务器和客户端,以及向发送所述下载请求的客户端发送下载策略,该下载策略包括选择的文件服务器和客户端的下载路径。 26. A communication system, comprising: a client, configured to send a download request to the central server, and download the data according to the received policy needed to download; wherein the download request comprises a request to download the file identification ; the central file server according to the identifier of the query contains data of the file server and client files, and select the file from the server and the client query to the file server and client selection policy based on pre-established, and transmitting the download policy client sends a download request to the terminal, the download policy comprises selecting the path to the file server and downloading the client.
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CN103685295A (en) * 2013-12-20 2014-03-26 乐视网信息技术(北京)股份有限公司 Method, terminal and system for downloading multimedia files
CN103747273A (en) * 2013-12-23 2014-04-23 乐视网信息技术(北京)股份有限公司 Video requesting method, device and system
CN103825940A (en) * 2014-02-17 2014-05-28 昆山中创软件工程有限责任公司 Cloud computing-based service providing method and device
CN104202655A (en) * 2014-03-24 2014-12-10 无锡天脉聚源传媒科技有限公司 Method and device of downloading audio and video files
CN104166567A (en) * 2014-08-12 2014-11-26 广州金山网络科技有限公司 Method and device for downloading network stream data
CN104935949A (en) * 2015-06-18 2015-09-23 深圳市茁壮网络股份有限公司 Method, device and system for downloading live broadcast video data

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