CN101030873A - Method and system for downloading data - Google Patents
Method and system for downloading data Download PDFInfo
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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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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
Technical field
The present invention relates to the method and system of the computer and the communications field, particularly data download.
Background technology
One of main application of the Internet is exactly resource-sharing, and the user can obtain the information and the data of needs by the Internet.There are two kinds of main downloading modes in the prior art at present, a kind of is to adopt client-server (C-S) framework, client sends the data download request according to network address of server to server, sends data to client after the server response request, and client receives data and finishes download.Referring to shown in Figure 1.Under this mode, a large amount of clients can take a large amount of system resources simultaneously from the server data download, and load of server is heavier, if utilize a plurality of servers to share the client terminal quantity of carrying, can increase network cost.
Another kind of mode is to adopt the C-S framework equally, but the server in this mode only carries out download schedule and co-ordination, does not preserve data, and client obtains the address of other client by server, and from other client downloads data.Referring to shown in Figure 2.Under this mode, data are kept at client, and the data stability of client is relatively poor, file is changed position or deleted easily, causes other client to download, and the bearing capacity of client a little less than, can't carry more client data download simultaneously simultaneously, and when a plurality of clients during simultaneously from client downloads data, the download quality of a plurality of clients is undesirable, also can influence other service operation of this client.The place one's entire reliance upon uploading rate of other client of the downloading rate of a client, and uploading rate is controlled voluntarily by the user, the user often worry uploading rate too high can influence this client other business and uploading rate is turned down, so can influence the downloading rate of whole network.
Summary of the invention
The invention provides a kind of method and system of data download, be used to improve the speed of client downloads data and download quality.
The invention provides following technical scheme:
A kind of method of the data download based on the bit stream file transfer protocol (FTP) may further comprise the steps:
Client sends download request to central server, and this download request comprises the sign of asking downloaded files;
Described central server has the file server and the client of the data of described file according to the sign inquiry of described file;
Described central server sends download policy to the client that sends described download request, and this download policy comprises the file server of the data that have described file and the download path of client;
The client that sends described download request according to the download policy of receiving simultaneously from the data of file server and client downloads needs.
Described central server is according to the selection strategy that pre-establishes select File server and client side from the file server that inquires and client.
Described central server is set priority according to described selection strategy for file server and the client selected, and this priority is carried at the client that sends to the described download request of transmission in the download policy.
The client that sends described download request is according to be linked in sequence file server and the client from high to low of the priority in the download policy.
Described selection strategy comprises one of following selection mode or their combination:
Described central server is preferential file server and the client of selecting to be in the client of described transmission download request same local area network (LAN) from inquire file server and client; Perhaps
Described central server is preferential file server and the client of selecting downloading rate to be not less than default threshold value from inquire file server and client, perhaps from inquire file server and client by downloading speed selective sequential file server and client from high to low; Perhaps
The client terminal quantity of described central server preferential selection carrying from inquire file server and client is not more than the file server and the client of default threshold value; Perhaps from inquire file server and client by the carrying ascending selective sequential file server and the client of client terminal quantity.
Described central server is preferential select File server when the select File server and client side.
The Thread Count of enabling when the Thread Count that the client that sends described download request is enabled during from the file server of same local area network (LAN) and client downloads data is no less than from other file server and client downloads.
Select File server and client side data download in file server that client provides according to download policy and the client.
A kind of method of data download may further comprise the steps:
Client sends download request to central server, and this download request comprises the sign of asking downloaded files;
Inquiry has the file server and the client of the data of described file to described central server according to the sign of described file, and according to the selection strategy that pre-establishes select File server and client side from the file server that inquires and client;
Described central server sends download policy to the client that sends described download request, and this download policy comprises the file server of selection and the download path of client;
The client that sends described download request according to the download policy of receiving simultaneously from the data of file server and client downloads needs.
Described central server is set priority according to described selection strategy for file server and the client selected, and this priority is carried at the client that sends to the described download request of transmission in the download policy.
The client that sends described download request is according to be linked in sequence file server and the client from high to low of the priority in the download policy.
Client is according to the selection strategy that pre-establishes select File server and client side and downloading from the file server that is connected to and client.
Described selection strategy comprises one of following selection mode or their combination:
Described central server is preferential file server and the client of selecting to be in the client of described transmission download request same local area network (LAN) from inquire file server and client; Perhaps
Described central server is preferential file server and the client of selecting downloading rate to be not less than default threshold value from inquire file server and client, perhaps from inquire file server and client by downloading speed selective sequential file server and client from high to low; Perhaps
The client terminal quantity of described central server preferential selection carrying from inquire file server and client is not more than the file server and the client of default threshold value; Perhaps from inquire file server and client by the carrying ascending selective sequential file server and the client of client terminal quantity.
Described central server is preferential select File server when the select File server and client side.
The Thread Count of enabling when the Thread Count that the client that sends described download request is enabled during from the file server of same local area network (LAN) and client downloads data is no less than from other file server and client downloads.
A kind of server comprises:
Be used to receive the unit of the download request that client sends, this download request comprises the sign of asking downloaded files;
The unit that is used for storage file server and client side's relevant information;
Be used for inquiring about the file server of the data that have described file and the unit of client according to the sign of described file;
Be used for according to the selection strategy that pre-establishes from the file server that inquires and client select File server and client side's unit;
Be used for sending to the client that sends described download request the unit of download policy, this download policy comprises the file server of selection and the download path of client.
A kind of client based on bit stream file distributing agreement comprises:
Transmitting element is used for sending download request according to the indication of control unit to central server, and this download request comprises the sign of asking downloaded files;
Receiving element is used to receive the download policy that central server sends, and this download policy comprises the download path of file server and client, and receives data downloaded from file server and client;
Control unit is used for connecting according to the download path of described file server and client indication linkage unit and corresponding file server and client, and inquires about this client and need data downloaded and download;
Linkage unit is used for the indication according to described control unit, is undertaken alternately by described receiving element and transmitting element and described file server and client, and foundation is connected with file server and client.
A kind of communication system based on bit stream file distributing agreement comprises:
Client is used for sending download request to central server, and downloads the data of needs according to the download policy of receiving; Wherein, described download request comprises the sign of asking downloaded files;
Described central server has the file server and the client of the data of described file according to the sign inquiry of described file, and to the client transmission download policy that sends described download request, this download policy comprises the file server of the data that have described file and the download path of client.
A kind of communication system comprises:
Client is used for sending download request to central server, and downloads the data of needs according to the download policy of receiving; Wherein, described download request comprises the sign of asking downloaded files;
Described central server has the file server and the client of the data of described file according to the sign inquiry of described file, and according to the selection strategy that pre-establishes select File server and client side from the file server that inquires and client, and to the client transmission download policy that sends described download request, this download policy comprises the file server of selection and the download path of client.
Beneficial effect of the present invention is as follows:
Present embodiment provides download service by file server for requesting client, has utilized the high-performance and the non-modifiability of file server, has promoted the downloading rate of client and has downloaded quality.Utilize the client to bring in the carrying of sharing server simultaneously, and can save network cost.
Present embodiment is also formulated download policy by central server, from data downloaded files server and client side can be provided, select to provide downloading rate preferably file server and client offer requesting client, guaranteed that promptly the downloading rate of client has been saved Internet resources again.
Description of drawings
Fig. 1 is the structure chart of a kind of communication system in the prior art;
Fig. 2 is the structure chart of another kind of communication system in the prior art;
Fig. 3 is the structure chart of communication system in the embodiment of the invention;
Fig. 4 A is the structure chart of central server in the embodiment of the invention;
Fig. 4 B is the structure chart of client in the embodiment of the invention;
Fig. 5 is based on the main method flow chart of the data download of bit stream file distributing agreement in the embodiment of the invention;
Fig. 6 is based on the concrete grammar flow chart of the data download of bit stream file distributing agreement in the embodiment of the invention;
Fig. 7 is the concrete grammar flow chart of data download in the embodiment of the invention.
Embodiment
For speed and the download quality that improves the client downloads data, present embodiment increases the server (present embodiment is called file server) that is used for storing data in network, carry out unified download schedule and formulate download policy by the server (present embodiment is called central server) that is used for download schedule and coordination.The data that client can be simultaneously needs from other client and file server download user.
In the present embodiment, file is divided into a plurality of packets, each packet is called file fragmentation.Each file fragmentation is to there being information such as sign and size.
Referring to Fig. 3, communication system comprises client 301, central server 302 and file server 303 in the present embodiment.
File server 303 store file data, can be complete file or partial document burst, and the relevant information that has book server, comprise sign, IP address, each port numbers, used agency, file identification tabulation and with the tabulation of file corresponding file segmental identification etc.
Client 301 has file data, simultaneously can be according to user's needs request file in download or file fragmentation.The information such as the sign of file server 303 that central server 302 returns and other client 301 and download path of receiving are downloaded the file fragmentation that needs from corresponding file server 303 and client 301, and regularly send download status information and data message to central server 302, wherein download status information comprises client 301 quantity of downloading rate, uploading rate, download progress and carrying etc.; Data message comprises sign of downloaded files burst etc.
Downloading rate is meant the bit number downloaded and the ratio of download time in unit bandwidth; Uploading rate is meant the bit number uploaded and the ratio of uplink time in unit bandwidth; Download progress is meant that the bit number of download accounts for the percentage of total file size.
Central server 302 has the relevant information of each file server 303 and client 301, and the relevant information of file server 303 comprises the address of sign, IP address, port, used agency, the file identification that has, each file corresponding file segmental identification, each file, current downloading rate and client 301 quantity of carrying etc.; The relevant information of client 301 comprises the address of sign, IP address, the file identification that has, each file corresponding file segmental identification, each file, client 301 quantity of current downloading rate, uploading rate, download progress and carrying etc.Central server 302 can by with the relevant information of the mutual acquisition file server 303 of file server 303, can be by receiving the relevant information that message that client 301 sends obtains client 301.
After central server 302 is received the downloading request message of client 301 transmissions, the file server 303 and the client 301 that have the data of user's needs according to the sign inquiry of file identification in the downloading request message and complete downloaded files burst, and from the file server 303 that inquires and client 301 preferential file server 303 and the client 301 of selecting to be in same local area network (LAN) with the client 301 that sends request, select downloading rate file server 303 and client 301 preferably then, select the file server 303 and the client 301 of client 301 negligible amounts of carrying at last, then information such as the download path of the file server 303 selected and client 301 and priority are sent to the client 301 that sends a request message.And record client 301 sends download status information and data message.When client 301 threaded file servers 303 and client 301, client 301 quantity that file server 303 and client 301 are carried add 1.When client 301 was suspended and stopped to download, client 301 quantity that corresponding file server 303 and client 301 are carried subtracted 1.Because the bandwidth of file server 303 is fixed, central server 302 can calculate the downloading rate of file server 303 according to client 301 quantity of the bandwidth of file server 303 and carrying.
Referring to Fig. 4 A, in the present embodiment, central server 302 comprises receiving element 401, query unit 402, selected cell 403, memory cell 404 and transmitting element 405.
The relevant information of memory cell 404 each file server 303 of storage and client 301, the relevant information of file server 303 comprise the address of sign, IP address, port, used agency, the file identification that has, each file corresponding file segmental identification, each file, client 301 quantity of current downloading rate, uploading rate, download progress and carrying etc.; The relevant information of client 301 comprises the address of sign, IP address, the file identification that has, each file corresponding file segmental identification, each file, current downloading rate and client 301 quantity of carrying etc.
Receiving element 401 receives downloading request message, download status information and the data message etc. that clients 301 send, and with download status information and data information memory to memory cell 404.
Transmitting element 405 sends file server 303 and the download path of client 301 and the download policy of priority that comprises selection to the client 301 of request.
Referring to Fig. 4 B, client 301 comprises receiving element 410, selected cell 411, linkage unit 412, control unit 413, memory cell 414, transmitting element 415 and user interface 416 in the present embodiment.
For example, have the aaa that is designated of downloaded files burst, the size of this document burst is 1m, and this document burst has been downloaded 0k to the 100k, 200k to the 300k.So, only need to download 101k to the 199k, 301k to 1024k.
Transmitting element 415 sends downloading request message, report download status information and data message according to the indication of control unit 413 to central server 302, and the interaction message that sends when connecting with file server 303 and client 301.
Receiving element 410 receives client 301 quantity of sign, IP address, corresponding file sign and file fragmentation sign, downloading rate, the carrying of file server 303 that central servers 302 send and client 301, the information such as priority orders that is connected each file server 303 and client 301 and the notice that can't download etc., receive the data that file server 303 and client 301 send and the interactive information when connecting, and send data to memory cell 414 and preserve.Receiving element 410 comprises the receiving element 410 that receives data download from file server, and this receiving element 410 is used host-host protocols such as HTTP or FTP; Comprise that also calm family end 301 receives the receiving element 410 of data download, this receiving element 410 is used bit stream file distributing agreement, can certainly adopt other agreements.
Referring to Fig. 5, the main method flow process based on the data download of bit stream file distributing agreement in the present embodiment is as follows:
Step 501: client 301 (to call requesting client 301 in the following text) sends downloading request message to central server 302, and this message comprises the sign of asking downloaded files.
Step 502: central server 302 has the file server 303 and the client 301 of the data of described file according to the downloading request message inquiry of receiving, and selects to provide the file server 303 and the client 301 of better downloading rate and transmission quality from the file server 303 that inquires and client 301.
Step 503: central server 302 sends download policy to requesting client 301, and this download policy comprises the file server of selection and the download path of client etc.
Step 504: requesting client 301 is downloaded the data of needs simultaneously from file server 303 and client 301 according to the download policy of receiving.
Referring to Fig. 6, the concrete grammar flow process based on the data download of bit stream file distributing agreement in the present embodiment is as follows:
Step 601: requesting client 301 sends downloading request message according to user's indication generation and to central server 302, downloading request message comprises needs the signature of downloaded files value (to be a kind of sign, can be the combination of numeral and letter), need the size and the sign of the sum of downloaded files burst, each file fragmentation of having downloaded, perhaps also comprise the IP address (comprising public network IP and LAN IP) that needs downloaded files segmental identification, requesting client 301, routing iinformation etc.If requesting client 301 is to ask to download this document first, so the downloaded files segmental identification is empty or is 0.
The downloaded files burst has multiple understanding mode, as a kind of be to think that this document burst downloads behind the complete file in download burst, downloading request message can not comprise the size of downloaded files burst so in this manner; As another kind of mode is the partial data of only having downloaded file fragmentation, think that then this document burst downloads, downloading request message need comprise the size of downloaded files burst so in this manner, and central server 302 can judge whether needs continue to download this document burst to requesting client 301 according to the size of file fragmentation.
Step 602: central server 302 receives the sign, port numbers, file storage path, IP address of downloading request message and record request client 301 and downloaded files segmental identification etc., has the not file server 303 and the client 301 of downloaded files burst according to the signature value of the file in the downloading request message and the sign inquiry of file fragmentation.
Step 603: central server 302 judges whether to inquire file server 303 and the client 301 that has file fragmentation, if then continue step 604, otherwise notice request client 301 can't be downloaded.
Step 604: the information such as client 301 quantity of the file server 303 that central server 302 further acquisitions inquire and IP address, downloading rate and the carrying of client 301.
Step 605: central server 302 knows according to downloading request message and the LAN IP of requesting client 301 perhaps analyzes LAN IP according to routing iinformation that perhaps the sign according to requesting client 301 inquires its IP address and routing iinformation etc.Central server 302 selects to provide the file server 303 and the client 301 of better downloading rate and transmission quality according to the selection strategy that pre-establishes from the file server 303 that inquires and client 301, and sets priority according to selection strategy for file server 303 and the client 301 selected.Selection strategy is as follows:
Step 605A: according to the IP address of LAN IP, file server 303 and the client 301 of requesting client 301, preferential file server 303 and the client 301 of selecting to be in same local area network (LAN) with requesting client 301, perhaps select and nearer file server 303 and the client 301 of requesting client 301 route distances, for example belong to the file server 303 and the client 301 of same route subnet.
Step 605B: central server 302 from other the file server that inquires 303 and client 301 select higher file server 303 and the client 301 of downloading rate.Higher downloading rate is meant that the downloading rate that surpasses default threshold value is considered as higher downloading rate, perhaps downloading rate is sorted from high to low, and a preceding m downloading rate is considered as higher downloading rate, and wherein m is default parameter value.
Step 605C: central server 302 again from other the file server that inquires 303 and client 301 select the file server 303 and the client 301 of client 301 negligible amounts of carrying.Client 301 quantity of less carrying are meant that client 301 quantity of the carrying that is lower than default threshold value are considered as client 301 quantity of less carrying, perhaps client 301 quantity with carrying sort from less to more, client 301 quantity of preceding n carrying are considered as client 301 quantity of less carrying, and wherein n is default parameter value.
Above-mentioned selection step can be chosen one or their combination wantonly, and a kind of preferable implementation is to carry out according to the order of step 605A, 605B and 605C, and in per step preferential select File server 303.Central server 302 is identical with the selection strategy of requesting client 301 in the present embodiment.
Step 606: central server 302 sends download policy to requesting client 301, and download policy comprises the file server 303 of download path and selection and the priority of client 301.For file server 303, download path is meant (URL) address, unified resource location; For client 301, download path is meant IP address and the memory address of file on client 301.Priority order from high to low is file server 303, client 301, downloading rate file server 303, the client 301 of client 301 negligible amounts of file server 303, client 301, carrying preferably in the local area network (LAN).Download policy can also comprise the information such as client 301 quantity of agents document sign, file fragmentation sign, downloading rate and carrying that the sign, IP address, port numbers, file server 303 of file server 303 is used, and the information such as client 301 quantity of the sign of client 301, file identification, file fragmentation sign, downloading rate and carrying.
Step 607: requesting client 301 is downloaded the data of needs according to the download policy of receiving.Regularly send download status information and data message, and when suspending and stopping to download, also send download status information and data message to central server 302 to central server 302.Requesting client 301 is according to the priority orders in the download policy, preferential file server 303 and the client 301 that connects in the local area network (LAN) is again according to the downloading rate order from high to low and client 301 quantity the be linked in sequence file server 303 and the client 301 from less to more of carrying.Inquiry needs data downloaded and downloads from the file server 303 that is connected to and client 301.Requesting client 301 is enabled file server 303 and client 301 data download of more thread in the local area network (LAN), more thread be meant account for total Thread Count be considered as more thread more than 50%, perhaps be considered as more thread than the Thread Count of when other file server 303 and client 301 are downloaded, enabling more.
If when central server 302 includes only the sign of file server 303 and client 301 in the information that requesting client 301 sends in step 606, then in step 607, requesting client 301 can inquire the information such as client 301 quantity of used agency, file address, download path, file identification, file fragmentation sign, downloading rate and carrying of the IP address, port numbers, file server 303 of file server 303 and client 301 according to the sign of file server 303 and client 301.Whether requesting client 301 also can be in same local area network (LAN) with this client 301 according to the IP adress analysis outfile server 303 and the client 301 of file server in the download policy 303 and client 301, preferentially selects the file server 303 of same local area network (LAN) and client 301 to download; Download according to file server 303 and client 301 that client 301 quantity of downloading rate and carrying are selected to provide downloading rate preferably and downloaded quality.Perhaps requesting client 301 is in downloading process, along with the variation of network environment is selected to download again, and can interrupt to provide the file server 303 of better transmission rate and being connected of client 301 according to predefined selection strategy from the file server 303 that connected and client 301.
Step 608: central server 302 receives and record download status information and data message.When requesting client 301 begins to connect each file server 303 and client 301, when perhaps central server 302 sent to requesting client 301 with the relevant information of file server 303 and client 301, client 301 quantity that file server 303 that central server 302 connects requesting client 301 and client 301 are carried added 1; When requesting client 301 was suspended or stopped to download, client 301 quantity that the file server 303 and the client 301 of requesting client 301 connections are carried subtracted 1.Central server 302 upgrades local record according to client 301 quantity of the carrying that receives when the discrepancy of quantity of client 301 quantity of the carrying that receives and local record.
In step 601, downloading request message can include only the sign of request downloaded files.The information such as sign of downloaded files burst can report central server 302 in the message afterwards.To step 606, central server 302 will send to requesting client 301 with the download path of described file identification corresponding file server 303 and client 301 in step 602.In step 607, requesting client 301 connects according to download policy and file server 303 and client 301, and inquire about each file server 303 and client 301 and whether have requesting client 301 and need data downloaded, the data that download and inquiry arrives interrupt there be not the file server 303 of data and being connected of client 301 that needs.
Referring to Fig. 7, the method of the data download when central server 302 selects to provide the file server 303 of transmission rate preferably and client 301 according to selection strategy in the present embodiment, this method is not limited to bit stream file distributing agreement, and the flow process of this method is as follows:
Step 701: requesting client 301 sends downloading request message according to user's indication generation and to central server 302, and downloading request message comprises needs the signature of downloaded files value.
Step 702: central server 302 receives the sign, port numbers, file storage path, IP address of downloading request message and record request client 301 and downloaded files segmental identification etc., has the file server 303 and the client 301 of the data of described file according to the signature value inquiry of the file in the downloading request message.
Step 703: central server 302 judges whether to inquire file server 303 and the client 301 that has file fragmentation, if then continue step 704, otherwise notice request client 301 can't be downloaded.
Step 704: the information such as client 301 quantity of the file server 303 that central server 302 further acquisitions inquire and IP address, downloading rate and the carrying of client 301.
Step 705: central server 302 knows according to downloading request message and the LAN IP of requesting client 301 perhaps analyzes LAN IP according to routing iinformation that perhaps the sign according to requesting client 301 inquires its IP address and routing iinformation etc.Central server 302 selects to provide the file server 303 and the client 301 of better downloading rate and transmission quality according to the selection strategy that pre-establishes from the file server 303 that inquires and client 301, and sets priority according to selection strategy for file server 303 and the client 301 selected.
Step 706: central server 302 sends download policy to requesting client 301, and download policy comprises the file server 303 of download path and selection and the priority of client 301.
Step 707: requesting client 301 is downloaded the data of needs according to the download policy of receiving.Regularly send download status information and data message, and when suspending and stopping to download, also send download status information and data message to central server 302 to central server 302.Requesting client 301 is according to the priority orders in the download policy, preferential file server 303 and the client 301 that connects in the local area network (LAN) is again according to the downloading rate order from high to low and client 301 quantity the be linked in sequence file server 303 and the client 301 from less to more of carrying.Inquiry needs data downloaded and downloads from the file server 303 that is connected to and client 301.Requesting client 301 is enabled file server 303 and client 301 data download of more thread in the local area network (LAN).
If in step 706, when central server 302 includes only the sign of file server 303 and client 301 in the information that requesting client 301 sends, then in step 707, requesting client 301 can inquire the information such as client 301 quantity of used agency, file address, download path, file identification, file fragmentation sign, downloading rate and carrying of the IP address, port numbers, file server 303 of file server 303 and client 301 according to the sign of file server 303 and client 301.Whether requesting client 301 also can be in same local area network (LAN) with this client 301 according to the IP adress analysis outfile server 303 and the client 301 of file server in the download policy 303 and client 301, preferentially selects the file server 303 of same local area network (LAN) and client 301 to download; Download according to file server 303 and client 301 that client 301 quantity of downloading rate and carrying are selected to provide downloading rate preferably and downloaded quality.Perhaps requesting client 301 is in downloading process, along with the variation of network environment is selected to download again, and can interrupt to provide the file server 303 of better transmission rate and being connected of client 301 according to predefined selection strategy from the file server 303 that connected and client 301.
Step 708: central server 302 receives and record download status information and data message.
Present embodiment provides download service by file server for requesting client, has utilized the high-performance and the non-modifiability of file server, has promoted the downloading rate of client and has downloaded quality.Utilize the client to bring in the carrying of sharing server simultaneously, and can save network cost.Present embodiment is also formulated download policy by central server, from data downloaded files server and client side can be provided, select to provide downloading rate preferably file server and client offer requesting client, guaranteed that promptly the downloading rate of client has been saved Internet resources again.Present embodiment provides the method for the data download that is applied to various host-host protocols.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (26)
1, a kind of method of the data download based on bit stream file distributing agreement is characterized in that, may further comprise the steps:
Client sends download request to central server, and this download request comprises the sign of asking downloaded files;
Described central server has the file server and the client of the data of described file according to the sign inquiry of described file;
Described central server sends download policy to the client that sends described download request, and this download policy comprises the file server of the data that have described file and the download path of client;
The client that sends described download request according to the download policy of receiving simultaneously from the data of file server and client downloads needs.
2, the method for data download as claimed in claim 1 is characterized in that, described central server is according to the selection strategy that pre-establishes select File server and client side from the file server that inquires and client.
3, the method for data download as claimed in claim 2, it is characterized in that, described central server is set priority according to described selection strategy for file server and the client selected, and this priority is carried at the client that sends to the described download request of transmission in the download policy.
4, the method for data download as claimed in claim 3 is characterized in that, the client that sends described download request is according to be linked in sequence file server and the client from high to low of the priority in the download policy.
As the method for claim 2 or 3 described data download, it is characterized in that 5, described selection strategy comprises one of following selection mode or their combination:
Described central server is preferential file server and the client of selecting to be in the client of described transmission download request same local area network (LAN) from inquire file server and client; Perhaps
Described central server is preferential file server and the client of selecting downloading rate to be not less than default threshold value from inquire file server and client, perhaps from inquire file server and client by downloading speed selective sequential file server and client from high to low; Perhaps
The client terminal quantity of described central server preferential selection carrying from inquire file server and client is not more than the file server and the client of default threshold value; Perhaps from inquire file server and client by the carrying ascending selective sequential file server and the client of client terminal quantity.
6, the method for data download as claimed in claim 5 is characterized in that, described central server is preferential select File server when the select File server and client side.
7, the method for data download as claimed in claim 5, it is characterized in that the Thread Count of enabling when the Thread Count that the client that sends described download request is enabled during from the file server of same local area network (LAN) and client downloads data is no less than from other file server and client downloads.
8, the method for data download as claimed in claim 1 is characterized in that, select File server and client side data download in file server that client provides according to download policy and the client.
9, the method for data download as claimed in claim 1 is characterized in that, described download request also comprises the size and the sign of each file fragmentation of sum, the request of the file fragmentation of request.
10, the method for data download as claimed in claim 1 is characterized in that, when described central server received download request, record sent file storing path, port numbers and the IP address of the client of described download request.
11, the method for data download as claimed in claim 1 is characterized in that, when described central server did not inquire file server and client, notice sent the client of described download request and can't download.
12, the method for data download as claimed in claim 1, it is characterized in that, the client that sends described download request use during from the file server data download and server between host-host protocol, use bit stream file distributing agreement during from the client downloads data.
13, the method for data download as claimed in claim 1, it is characterized in that, when the client that sends described download request began the threaded file server and client side, the client terminal quantity that file server that described central server will be connected with the client that sends described download request and client are carried added 1; Perhaps
When described central server sent described download policy to the client that sends described download request, the client terminal quantity that the described file server that inquires and client are carried added 1.
14, the method for data download as claimed in claim 1; it is characterized in that; when the client that sends described download request was suspended or stopped data download, the client terminal quantity that file server that described central server will be connected with this client that sends download request and client are carried subtracted 1.
15, the method for data download as claimed in claim 1, it is characterized in that, after the client that sends described download request begins data download, regularly send download status information and data message to described central server, described central server receives and record download status information and data message; And/or
The client that sends described download request sends download status information and data message to described central server when suspending and stopping data download, described central server receives and record download status information and data message;
Wherein, described download status information comprises downloading rate, uploading rate and download progress; Described data message comprises the sign of downloaded files burst.
16, a kind of method of data download is characterized in that, may further comprise the steps:
Client sends download request to central server, and this download request comprises the sign of asking downloaded files;
Inquiry has the file server and the client of the data of described file to described central server according to the sign of described file, and according to the selection strategy that pre-establishes select File server and client side from the file server that inquires and client;
Described central server sends download policy to the client that sends described download request, and this download policy comprises the file server of selection and the download path of client;
The client that sends described download request according to the download policy of receiving simultaneously from the data of file server and client downloads needs.
17, the method for data download as claimed in claim 16, it is characterized in that, described central server is set priority according to described selection strategy for file server and the client selected, and this priority is carried at the client that sends to the described download request of transmission in the download policy.
18, the method for data download as claimed in claim 17 is characterized in that, the client that sends described download request is according to be linked in sequence file server and the client from high to low of the priority in the download policy.
19, the method for data download as claimed in claim 16 is characterized in that, client is according to the selection strategy that pre-establishes select File server and client side and downloading from the file server that is connected to and client.
As the method for claim 17 or 19 described data download, it is characterized in that 20, described selection strategy comprises one of following selection mode or their combination:
Described central server is preferential file server and the client of selecting to be in the client of described transmission download request same local area network (LAN) from inquire file server and client; Perhaps
Described central server is preferential file server and the client of selecting downloading rate to be not less than default threshold value from inquire file server and client, perhaps from inquire file server and client by downloading speed selective sequential file server and client from high to low; Perhaps
The client terminal quantity of described central server preferential selection carrying from inquire file server and client is not more than the file server and the client of default threshold value; Perhaps from inquire file server and client by the carrying ascending selective sequential file server and the client of client terminal quantity.
21, the method for data download as claimed in claim 20 is characterized in that, described central server is preferential select File server when the select File server and client side.
22, the method for data download as claimed in claim 20, it is characterized in that the Thread Count of enabling when the Thread Count that the client that sends described download request is enabled during from the file server of same local area network (LAN) and client downloads data is no less than from other file server and client downloads.
23, a kind of server is characterized in that, comprising:
Be used to receive the unit of the download request that client sends, this download request comprises the sign of asking downloaded files;
The unit that is used for storage file server and client side's relevant information;
Be used for inquiring about the file server of the data that have described file and the unit of client according to the sign of described file;
Be used for according to the selection strategy that pre-establishes from the file server that inquires and client select File server and client side's unit;
Be used for sending to the client that sends described download request the unit of download policy, this download policy comprises the file server of selection and the download path of client.
24, a kind of client based on bit stream file distributing agreement is characterized in that, comprising:
Transmitting element is used for sending download request according to the indication of control unit to central server, and this download request comprises the sign of asking downloaded files;
Receiving element is used to receive the download policy that central server sends, and this download policy comprises the download path of file server and client, and receives data downloaded from file server and client;
Control unit is used for connecting according to the download path of described file server and client indication linkage unit and corresponding file server and client, and inquires about this client and need data downloaded and download;
Linkage unit is used for the indication according to described control unit, is undertaken alternately by described receiving element and transmitting element and described file server and client, and foundation is connected with file server and client.
25, a kind of communication system based on bit stream file distributing agreement is characterized in that, comprising:
Client is used for sending download request to central server, and downloads the data of needs according to the download policy of receiving; Wherein, described download request comprises the sign of asking downloaded files;
Described central server has the file server and the client of the data of described file according to the sign inquiry of described file, and to the client transmission download policy that sends described download request, this download policy comprises the file server of the data that have described file and the download path of client.
26, a kind of communication system is characterized in that, comprising:
Client is used for sending download request to central server, and downloads the data of needs according to the download policy of receiving; Wherein, described download request comprises the sign of asking downloaded files;
Described central server has the file server and the client of the data of described file according to the sign inquiry of described file, and according to the selection strategy that pre-establishes select File server and client side from the file server that inquires and client, and to the client transmission download policy that sends described download request, this download policy comprises the file server of selection and the download path of client.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710084661 CN101030873A (en) | 2007-02-15 | 2007-02-15 | Method and system for downloading data |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710084661 CN101030873A (en) | 2007-02-15 | 2007-02-15 | Method and system for downloading data |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101030873A true CN101030873A (en) | 2007-09-05 |
Family
ID=38715972
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710084661 Pending CN101030873A (en) | 2007-02-15 | 2007-02-15 | Method and system for downloading data |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101030873A (en) |
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