CN101515945B - On-line application method and system of P2P resource files - Google Patents
On-line application method and system of P2P resource files Download PDFInfo
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- CN101515945B CN101515945B CN2009100588597A CN200910058859A CN101515945B CN 101515945 B CN101515945 B CN 101515945B CN 2009100588597 A CN2009100588597 A CN 2009100588597A CN 200910058859 A CN200910058859 A CN 200910058859A CN 101515945 B CN101515945 B CN 101515945B
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Abstract
The invention discloses an on-line application method and a system of P2P resource files and aims at realizing the guaranteed on-line application. The on-line application method comprises: a local client is connected with a TRACKER server for obtaining an information list of all the other current clients; the handshake connection with all the other clients is carried out for obtaining block information of the resource files owned by the other clients; the resource files are analyzed for judging the position of the block where the next part of data needed by the server is and respectively carrying out local data reading or sending a request to other clients or sending the request to a seeding server; other clients or the seeding server sends the next part of data to the local client according to the request; the local client receives the data of the step d, and an application device reads the data, carries out the on-line application, caches the data and updates the block information of the local client; the steps are repeated till the application of the resource files is completed or a user logs out.
Description
Technical field
The present invention relates to a kind of online application process and system of P2P resource file.
Background technology
Resource file in the P2P network transmits and management according to piecemeal, and according to piecemeal again in resource file size burst, the sheet, each piecemeal is exactly the elementary cell of P2P request of data, transmission, storage.
The burst that has according to the other side between the client of P2P network/piecemeal table carries out request of data, realizes download function.The burst of request of data numbering is to count in the scope at total sheet in the P2P client, and the piecemeal quantity in the sheet also is to appoint in advance in seed file.
So in the existing P 2P network, the client that P2P downloads (as BT, eMule etc.) can't realize secure online application, as online audio plays or video file, even other large-scale application file of online application.
Having now utilizes P2P network or agreement to carry out live method, as application number is that 200610051893.8 Chinese invention patent ublic specification of application discloses " a kind of dynamic broadcast node technology that uses is realized the live method of P2P ", handle the client terminal playing request by Control Server, and temporary server is set in selection in requesting client, band P2P protocol conversion module plug-in unit is installed in automatically the temporary server of this setting, to set simultaneously on the media server that temporary server is connected to Control Server retrieval and registration, control on the temporary server that the subsequent request client is connected to this setting, this temporary server is with the client transmissions request live broadcast stream media program of P2P protocol function to follow-up connection again.
The described method of above-mentioned patent application need be installed in the modular converter plug-in unit on the temporary server of setting automatically, and in addition, a temporary server also needs not reduce server stress for a plurality of clients provide service.
Summary of the invention
The online application process that the purpose of this invention is to provide a kind of P2P resource file, utilize client and P2P agreement to realize secure online application, neither can upload the performance information of each client, also can plug-in unit be installed automatically, become temporary server passively and influence client operation usefulness.
Another object of the present invention provides a kind of online application system with P2P resource file of above-mentioned advantage.
Purpose of the present invention can realize by following technical proposals respectively:
A kind of online application process of P2P resource file comprises the steps:
A. the local client that is provided with corresponding resource file applicator connects the TRACKER server, obtain the information list of current all other clients, other client comprises kind of the server of doing that can move the P2P client-side program at least, this does kind of a server stores resource file, and provides kind of the service of doing to this resource file;
B. other client of local client and all is shaken hands and is connected, and obtains the branch block message that they have resource file, and wherein the client that is set of the P2P protocol extension identification section in the handshaking information is and does kind of a server;
C. applicator is analyzed resource file, according to the order successively of minute block message or order selectively, judges the piecemeal at the next part data place that applicator needs; If local client has had this piecemeal, above-mentioned applicator is directly carried out local data and is read; If local client does not have this piecemeal, local client is earlier to other client except that doing kind of server, send request, if other client except that doing kind of server does not all have the piecemeal of the next part data of local client needs, local client sends request to doing kind of server;
D. other client transmits the next part data that need according to above-mentioned request to local client;
E. the data of local client receiving step d, above-mentioned applicator reading of data is carried out online application; Simultaneously, the block data that gets access to is buffered in local client, upgrades the branch block message of local client, after local client has had whole piecemeals in a certain burst, had this burst to other client notice local client by the P2P agreement;
F. repeating step c, d, e use up to resource file and to finish or the user withdraws from.
A0 in steps also before the described step a, promptly local client carries out initialization to the seed file of resource file correspondence.
B0 in steps also after the described step b, judge that promptly whether current time carries out online application to resource file, if do not carry out, then enters step b1, the branch block message that other client after shaking hands according to foundation has carries out order request, progressive download to these block datas; If carry out, then enter step c.
Described resource file is the audio or video file, and described resource file applicator is a media player.
Among the described step c, applicator is analyzed resource file.
A kind of online application system of P2P resource file comprises
Local client is provided with the link block of shaking hands, request sending module, data transmission and receiver module;
Other client, be connected by network with local client, at least be provided with the link block of shaking hands, request sending module, data send and receiver module, the applicator of corresponding resource file, analysis module, kind of the server of doing that can move the P2P client-side program, this does kind of a server stores resource file, and provide kind of the service of doing to this resource file, described kind of the server of doing is provided with the set module, the link block of shaking hands, doing kind of server is transmitting when shaking hands link information mutually with the link block of shaking hands of client by each other, its set module with the set of P2P protocol extension identification section, shows it oneself is to do kind of a server in the link information of shaking hands;
In all clients, arbitrary client is a local client, and then the client except that it is other client;
The TRACKER server is safeguarded the information of all clients that are attached thereto, and establishes the information list of all clients;
Described local client also comprises the applicator of corresponding resource file, and analysis module;
Local client and other client shake hands link block when needed, transmit the link information of shaking hands mutually, comprise the branch block message after each self refresh in this link information of shaking hands;
The request sending module of local client and other client sends request to the TRACKER server when needed, obtains the information list of all clients;
The data transmission of local client and other client and receiver module transmit data mutually according to the P2P agreement when needed;
Analysis module is analyzed resource file, according to this resource file divide block message successively the order or selectively the order, judge the piecemeal at the next part data place of the online application need of applicator, if judge the online application need of applicator the next part data not in the piecemeal local cache, local client is earlier to other client except that doing kind of server, send request, if other client except that doing kind of server does not all have the piecemeal of the next part data of local client needs, local client sends request to doing kind of server, receive by doing kind of the piecemeal of the next part data of server transmission by its data transmission and receiver module, offer applicator and carry out online application, the above-mentioned piecemeal that the while local client will get access to is buffered in local client, for other client-requested.
Described applicator is a media player, and described resource file is the audio or video file.
Method of the present invention adopts above-mentioned steps, applicator is searched data at local client earlier according to order and is carried out online application (as online broadcast), if the piecemeal of the next partial data that local client does not need is (according to the agreement of P2P agreement, resource file is earlier by burst, piecemeal again in the sheet, such as the size resource file that is 1GB, be divided into 1000 according to every 1MB, every 1MB is divided into 32 again according to 32KB, each piecemeal is exactly the P2P request of data, transmission, the elementary cell of storage), again to other client-requested and reception, if other client does not have yet, then to doing kind of server requests and receiving data, thereby guaranteed the integrality of data effectively, reach the requirement of the whole resource file of online application, and in all clients, be docile and obedient preface by the P2P agreement and transmit, reading of data has made full use of the characteristics of P2P network, can reduce and do kind of a server stress, reduce offered load, also dynamically improved the performance of online application.
System of the present invention adopts said structure, and local client and other client constitute the P2P network, and the characteristics of utilizing the P2P agreement reduce offered load under said method, dynamically improve the performance of online application; By doing the participation of kind of server, improved the protection of online application.
As seen, adopt the method for above-mentioned steps and/or the system of said structure, the present invention is in the online application process that realizes the P2P resource file, not only improved user experience, and do not need the intervention of temporary server, and reduced the pressure of server simultaneously, made full use of the resource between the client.
Description of drawings
The present invention will illustrate by example and with reference to the mode of accompanying drawing, wherein:
Fig. 1 is a method flow schematic diagram of the present invention.
Embodiment
The present invention is further illustrated below in conjunction with the drawings and specific embodiments.
Embodiment 1:
A kind of online application process of P2P resource file, in the present embodiment, the P2P resource file is a video file, it is online to be applied as online broadcast.
The method of present embodiment comprises the steps:
A. be provided with corresponding resource file applicator (in the present embodiment, applicator is a media player, this media player can be a hardware player, also can be software player) local client connect the TRACKER server, obtain the information list of current all other clients;
B. other client of local client and all is shaken hands and is connected, and obtains the branch block message that they have resource file;
C. applicator is analyzed resource file, according to the order successively of minute block message or order selectively, judges the piecemeal at the next part data place that applicator needs; If local client has had this piecemeal, above-mentioned applicator is directly carried out local data and is read; If local client does not have this piecemeal, local client sends request to other client that has this piecemeal;
D. other client transmits the next part data that need according to above-mentioned request to local client;
E. the data of local client receiving step d, above-mentioned applicator reading of data is carried out online application; Simultaneously, the block data that gets access to is buffered in local client, and upgrades the branch block message of local client, after local client has had whole piecemeals in a certain burst, had this burst to other client notice local client by the P2P agreement;
F. repeating step c, d, e use up to resource file and to finish or the user withdraws from.
Among the step c, analyze resource file, can be undertaken, also can be undertaken by applicator by local client.
According to the burst in the P2P agreement/piecemeal principle, the ID of burst/piecemeal fixes; In case after file size was determined, the size of burst and piecemeal determines, maximum burst numbering is corresponding determined that each in the sheet divides block number also to determine.
In the step c of present embodiment, media player is analyzed the situation of the video file of AVI form: what player needed at first is a part of data (first piecemeal in first burst) that this file begins most, be used for taking a decision as to whether the AVI formatted file, be exactly the concordance list of reading the audio frequency and video track of avi file then, this concordance list may be close to file header, also may be at the afterbody of file, these decision processes are actually the processing of player inside; At player, it only thinks that this avi file is a local file, and its unclear which data on earth exists; Player can send a certain size the request of data of certain offset address correspondence in this avi file of a request ' this locality ', local client divides block size according to the P2P agreement according to this offset address and burst in the request, calculate the data that player needs, corresponding to which piecemeal or which piecemeal, go then carry out to judge that certain client has these data, goes for and ask these data then; After data are obtained successfully, upgrade the branch block message of local client, return to player and be saved in the cache file, being saved in the cache file is to be convenient to the user watch or offer other client-requested repeatedly and use.
Ask several piecemeals repeatedly, after obtaining the audio frequency and video index and finishing, player is according to index information, determining first frame of video and the audio frame offset address in file inside is A and B, size is C and D, and just sending and reading the size that this document A begins is that the one piece of data of C, the size that B begins are the one piece of data of D.Local client by the P2P agreement to the burst of this resource file agreement with divide O byte in N the piecemeal that block size calculates corresponding M the burst in address that A begins, the data of C size need 1.5 piecemeals, so just to certain client (if other all clients do not have, just to doing kind of a server) request of the request of sending M burst N piecemeal and M burst N+1 piecemeal, even can be the request of sending M burst N piecemeal, sending M burst N+1 piecemeal to client 2 to client 1, the network response is faster like this.
Among the step e, after local client received data, in the data adding N+1 piecemeal that O byte of M burst N piecemeal begun, the data that amount to 1.5 piecemeals offered player and carry out online broadcast, and two piecemeals all are buffered in the local client.
Embodiment 2:
The online application process of the P2P resource file of present embodiment is on the basis of embodiment 1, in order to improve the protection of online application, in the P2P network, be provided with and do kind of a server, promptly in other client, have at least one kind of the server of doing that can move the P2P client-side program.
In the present embodiment, the P2P resource file is a video file, onlinely is applied as online broadcast, and applicator is a media player, and this player can be a hardware player, also can be software player.
Do kind of a server and preserve resource file " aabb.rm ", make and issue seed file " aabb.720P.torrent ", be registered to the TRACKER server, this resource file is done kind of a service.
The method of present embodiment comprises the steps: as shown in Figure 1
A0. local client obtains seed file " aabb.720P.torrent ", and this seed file is carried out initialization;
A. the local client that is provided with corresponding resource file applicator connects the TRACKER server, obtain the information list of current all other clients, just comprised in the tabulation of these client-side informations and done kind of a server, done kind of server and be one in fact and have particular client end complete media files, online at any time;
B. other client of local client and all is shaken hands and is connected, obtain the branch block message that they have resource file by the BITFIELD data, wherein local client with do kind of a server and shake hands link information when transmitting, do kind of server in handshaking information with the set of P2P Extended Protocol identification section (such as: first byte in 8 bytes of protocol extension information is changed to 0XCD), to show oneself is to do kind of a server, but not common client; Local client is that client identification of 0XCD is for doing kind of a server with first byte in 8 bytes of protocol extension information;
C. applicator is analyzed resource file, according to the order successively of minute block message or order selectively, judges the piecemeal at the next part data place that applicator needs; If local client has had this piecemeal, above-mentioned applicator is directly carried out local data and is read; If local client does not have this piecemeal, local client sends request to other client that has this piecemeal;
D. other client transmits the next part data that need according to above-mentioned request to local client;
E. the data of local client receiving step d, above-mentioned applicator reading of data is carried out online application; Simultaneously, the block data that gets access to is buffered in local client, and upgrades the branch block message of local client, after local client has had whole piecemeals in a certain burst, had this burst to other client notice local client by the P2P agreement;
F. repeating step c, d, e use up to resource file and to finish or the user withdraws from.
The detailed process of step c is as described in the embodiment 1.
Step f, promptly the repetitive process of step c, d, e is as follows:
It is the rm form that applicator is analyzed the resource file type, and file header (first piecemeal in first burst) data are obtained in decision earlier; If local client has had the data cached of this piecemeal, so directly carry out local data and read; If local client does not have this piecemeal, the client that has first piecemeal in first burst outside doing kind of server, that first finds sends request; If all clients of other except that doing kind of server all do not have first block data in first burst, send the first piecemeal request in first burst to doing kind of server so;
After receiving first piecemeal in first burst and being buffered in local client, applicator continues to analyze, and judges two block datas (last two piecemeals of last burst) that need tail of file; If this locality has had the data cached of this two piecemeal, so directly carry out local data and read; If this locality does not have this piecemeal,, continue client to doing kind of server outside, that first finds has in this two piecemeal one or two and send and ask; If these clients all do not have this two block data, send this two piecemeals request to doing kind of a server so;
After receiving two block datas and buffer memory of tail of file, applicator continues to analyze, and judges the partial data that needs in the middle a certain piecemeal of file (as the N piecemeal in the M burst); If this locality has had the data cached of this piecemeal, so directly carry out local data and read; If this locality does not have this piecemeal, continue the client that has this piecemeal outside doing kind of server, that first finds and send request; If these clients are this block data not all, send this piecemeal request to doing kind of a server so.
The burst that relates in the above-mentioned request process has mechanism such as notice, piece request arbitration, piece request merging, piece request cancellation, piece request, piece transmission, and is consistent with conventional P 2P client, need not change.
Embodiment 3:
Present embodiment has increased step b0 and step b1 on the basis of embodiment 2.
Step b0 judges that promptly whether current time carries out online application to resource file, if do not carry out, then enters step b1 after step b; If carry out, then enter step c.
Step b1 is after step b0, and the branch block message that other client after promptly shaking hands according to foundation has carries out order request, progressive download to these block datas.
Embodiment 4:
Present embodiment is a kind of online application system of P2P resource file, comprises
Local client is provided with the link block of shaking hands, request sending module, data transmission and receiver module;
Other client is connected by network with local client, is provided with the link block of shaking hands, request sending module, data transmission and receiver module at least;
The TRACKER server is safeguarded the information of all clients that are attached thereto, and establishes the information list of all clients;
Described local client also comprises the applicator of corresponding resource file, and analysis module;
At least one kind of the server of doing that can move the P2P client-side program, this does kind of a server stores resource file, and provides kind of the service of doing to this resource file; Do that kind of a server is provided with the set module, the link block of shaking hands, doing kind of server is transmitting when shaking hands link information mutually with the link block of shaking hands of client by each other, its set module with the set of P2P protocol extension identification section, shows it oneself is to do kind of a server in the link information of shaking hands;
Local client and other client shake hands link block when needed, transmit the link information of shaking hands mutually, comprise the branch block message after each self refresh in this link information of shaking hands; When other client and local client are shaken hands, can remove to obtain the branch block message of renewal each other; In addition,, can send the order that the M_HAVE parameter is Number, represent that promptly local client has had Number burst (being all piecemeals in this burst) to them for having set up other client of shaking hands with oneself;
The request sending module of local client and other client sends request to the TRACKER server when needed, obtains the information list of all clients;
The data transmission of local client and other client and receiver module transmit data mutually according to the P2P agreement when needed;
Analysis module is analyzed resource file, according to this resource file divide block message successively the order or selectively the order, judge the piecemeal at the next part data place of the online application need of applicator, again according to determined piecemeal whether at local client, drive applicator and carry out that local data reads or send information to local client, make it send request to other client that has above-mentioned piecemeal, receive the above-mentioned piecemeal that other client has, offer applicator and carry out online application, simultaneously the block data that gets access to is buffered in local client, and the branch block message of renewal local client, after local client has had whole piecemeals in a certain burst, had this burst to other client notice local client by the P2P agreement; At the piecemeal of the next part data of judging the online application need of applicator during not in all clients, transmit information to local client, send request by its request sending module to doing kind of server, receive by doing kind of the piecemeal of the next part data of server transmission by its data transmission and receiver module, offer applicator and carry out online application, simultaneously the block data that gets access to is buffered in local client, and the branch block message of renewal local client, after local client has had whole piecemeals in a certain burst, had this burst to other client notice local client by the P2P agreement.
Above-mentioned other client also comprises the applicator of corresponding resource file, and analysis module; In all clients, arbitrary client is a local client, and then the client except that it is other client.
P2P resource file in the present embodiment can be a mass file, and as the three-dimensional animation file, applicator can be to open the application software of this three-dimensional animation file.
Utilize the system of present embodiment to realize that the online application process of P2P resource file is respectively as embodiment 1 or embodiment 2 or embodiment 3.
Disclosed all features in this specification, or the step in disclosed all methods or the process except mutually exclusive feature and/or step, all can make up by any way.
Disclosed arbitrary feature in this specification (comprising any accessory claim, summary and accompanying drawing) is unless special narration all can be replaced by other equivalences or the alternative features with similar purpose.That is, unless special narration, each feature is an example in a series of equivalences or the similar characteristics.
The present invention is not limited to aforesaid embodiment.The present invention expands to any new feature or any new combination that discloses in this manual, and the arbitrary new method that discloses or step or any new combination of process.
Claims (7)
1. the online application process of a P2P resource file is characterized in that, comprises the steps:
A. the local client that is provided with corresponding resource file applicator connects the TRACKER server, obtain the information list of current all other clients, other client comprises kind of the server of doing that can move the P2P client-side program at least, this does kind of a server stores resource file, and provides kind of the service of doing to this resource file;
B. other client of local client and all is shaken hands and is connected, and obtains the branch block message that they have resource file, and wherein the client that is set of the P2P protocol extension identification section in the handshaking information is and does kind of a server;
C. applicator is analyzed resource file, according to the order successively of minute block message or order selectively, judges the piecemeal at the next part data place that applicator needs; If local client has had this piecemeal, above-mentioned applicator is directly carried out local data and is read; If local client does not have this piecemeal, local client is earlier to other client except that doing kind of server, send request, if other client except that doing kind of server does not all have the piecemeal of the next part data of local client needs, local client sends request to doing kind of server;
D. other client transmits the next part data that need according to above-mentioned request to local client;
E. the data of local client receiving step d, above-mentioned applicator reading of data is carried out online application; Simultaneously, the block data that gets access to is buffered in local client, upgrades the branch block message of local client, after local client has had whole piecemeals in a certain burst, had this burst to other client notice local client by the P2P agreement;
F. repeating step c, d, e use up to resource file and to finish or the user withdraws from.
2. a kind of according to claim 1 online application process of P2P resource file is characterized in that, a0 in steps also before the described step a, and promptly local client carries out initialization to the seed file of resource file correspondence.
3. a kind of as claimed in claim 1 or 2 online application process of P2P resource file, it is characterized in that, b0 in steps also after the described step b, judge promptly whether current time carries out online application to resource file, if do not carry out, then enter step b1, the branch block message that other client after shaking hands according to foundation has carries out order request, progressive download to these block datas; If carry out, then enter step c.
4. as the online application process of a kind of P2P resource file as described in the claim 3, it is characterized in that described resource file is the audio or video file, described resource file applicator is a media player.
5. as the online application process of a kind of P2P resource file as described in the claim 4, it is characterized in that among the described step c, applicator is analyzed resource file.
6. the online application system of a P2P resource file comprises
Local client is provided with the link block of shaking hands, request sending module, data transmission and receiver module;
Other client, be connected by network with local client, at least be provided with the link block of shaking hands, request sending module, data send and receiver module, the applicator of corresponding resource file, analysis module, kind of the server of doing that can move the P2P client-side program, this does kind of a server stores resource file, and provide kind of the service of doing to this resource file, described kind of the server of doing is provided with the set module, the link block of shaking hands, doing kind of server is transmitting when shaking hands link information mutually with the link block of shaking hands of client by each other, its set module with the set of P2P protocol extension identification section, shows it oneself is to do kind of a server in the link information of shaking hands;
In all clients, arbitrary client is a local client, and then the client except that it is other client;
The TRACKER server is safeguarded the information of all clients that are attached thereto, and establishes the information list of all clients;
It is characterized in that described local client also comprises the applicator of corresponding resource file, and analysis module;
Local client and other client shake hands link block when needed, transmit the link information of shaking hands mutually, comprise the branch block message after each self refresh in this link information of shaking hands;
The request sending module of local client and other client sends request to the TRACKER server when needed, obtains the information list of all clients;
The data transmission of local client and other client and receiver module transmit data mutually according to the P2P agreement when needed;
Analysis module is analyzed resource file, according to this resource file divide block message successively the order or selectively the order, judge the piecemeal at the next part data place of the online application need of applicator, if judge the online application need of applicator the next part data not in the piecemeal local cache, local client is earlier to other client except that doing kind of server, send request, if other client except that doing kind of server does not all have the piecemeal of the next part data of local client needs, local client sends request to doing kind of server, receive by doing kind of the piecemeal of the next part data of server transmission by its data transmission and receiver module, offer applicator and carry out online application, the above-mentioned piecemeal that the while local client will get access to is buffered in local client, for other client-requested.
7. as the online application system of a kind of P2P resource file as described in the claim 6, it is characterized in that described applicator is a media player, described resource file is the audio or video file.
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| CN102075561B (en) * | 2010-11-29 | 2013-06-05 | 华为数字技术（成都）有限公司 | Method, device and system for downloading network resources |
| CN104462154B (en) * | 2013-09-25 | 2018-10-12 | 联想(北京)有限公司 | Data processing method and data processing equipment |
| CN105227970B (en) * | 2015-09-29 | 2018-08-07 | 北京奇艺世纪科技有限公司 | A kind of video recommendation method and device |
| US20170346924A1 (en) * | 2016-05-31 | 2017-11-30 | Actiontec Electronics, Inc. | System and method for providing reliable and efficient data transfer |
| EP3346672B1 (en) * | 2017-01-04 | 2019-08-21 | Samsung Electronics Co., Ltd. | Electronic device and application sharing method thereof |
| CN109889917B (en) * | 2017-12-06 | 2020-07-14 | 上海交通大学 | Video transmission method based on cache coding |
| CN114466003B (en) * | 2022-03-21 | 2023-12-05 | 北京有竹居网络技术有限公司 | Communication method and related equipment thereof |
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| CN1992602A (en) * | 2005-12-29 | 2007-07-04 | 盛趣信息技术（上海）有限公司 | Method for implementing real-time broadcast to the downloaded multimedia file based on P2P network |
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