CN102387168B - A kind of contents access method and access to content node - Google Patents
A kind of contents access method and access to content node Download PDFInfo
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Abstract
The invention discloses a kind of contents access method and access to content node, including: the application program in access to content node drives, to the content distributing network (CDN) that can interact is adaptive, the operation requests sent CDN；CDN adaptation drives according to the operation requests received, and CDN is operated accordingly, and returns operating result to application program.The present invention by access to content node can be mutual with application program CDN adaptation drive, make application program realize the access to CDN, solve some application programs and can not access CDN or access the problem that CDN cost is too big.
Description
Technical field
The present invention relates to content distributing network technical field, particularly relate to a kind of contents access method and access to content node.
Background technology
Content distributing network (ContentDeliveryNetwork, referred to as CDN) is the overlay network on IP layer network, for content is distributed to user from content source.Before adopting CDN, access to content node directly accesses content source server and obtains the content that content publisher issues.That CDN proposes in order that the pressure that brings to network and content source of growths of alleviating user and business, to ensure that the use being distributed in each corner of network can enjoy excellent service quality per family.
CDN passes through the content caching from content source in the CDN caching server of network edge, thus reducing the flow by network backbone, having saved the cost of operator's dilatation, having also improved user and accessing the speed of content, alleviating the pressure of content source.It is said that in general, CDN is made up of special server.Some CDN have employed P2P (point-to-point) technology, is made up of specialized server and user node, and namely the access to content node of user can also help content source distribution content.
At present, the distribution of the polytype contents such as content distributing network energy supported web page, Streaming Media and file, improve web page browsing, internet television (InternetProtocolTelevision or InteractivePersonalTelevision, referred to as IPTV), video request program (VideoonDemand, referred to as VoD), the service quality of the business such as Online Music and file download, and optimize the flow of these business.
Generally, in order to make user understand the content that user in content source is interested, it is possible to use door (portal) server provides a user with the essential information of obtainable contents list and content in content source.By browsing portal, user can select content interested.Afterwards, user can download content interested by CDN from content source.The essential information of contents list and content itself is also the content of a kind of form, and CDN can also help portal server to pay the content of this form to access to content node.So, access to content node can directly access portal, it is also possible to by CDN dereference portal.
On access to content node, it is possible to by the essential information of same application program not only browsing content list and content but also access content；Can also by the essential information of an application program browsing content list and content, another application program accesses content.
Although, CDN technology is distributed content and helps portal to have many good qualities in distributing the essential information of contents list and content in help content source, but, as shown in Figure 1, on access to content node, some application programs can access CDN, and some application programs cannot access CDN.Some application programs can access content by CDN, and such as web browser can pass through CDN and access the content from website；Some application programs cannot access network, than if any Photo Browser can only browse just list and the picture of this locality, it is impossible to access the just list of portal on network and the picture of content source；Some application programs can access network, but do not support CDN, can only directly accessing content source and/or portal, such as general media player support adopts RTP (RTP) to access the content source on network, but can not support the CDN adopting burst to pay.
To sum up, prior art exists some application program and cannot access CDN or access the problem that CDN cost is too big, not yet propose effective solution at present.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of contents access method and access to content node, solves some application program and cannot pass through the problem that content distributing network accesses content.
For solving above-mentioned technical problem, a kind of contents access method of the present invention, including:
Application program in access to content node drives, to the content distributing network (CDN) that can interact is adaptive, the operation requests sent CDN；
CDN adaptation drives according to the operation requests received, and CDN is operated accordingly, and returns operating result to application program.
Further, the operation requests to CDN that application program sends includes one or more of: to the operation requests of the content in content source and the operation requests to the contents list in portal server and content information.
Further, comprising the interface unit that application program is supported in CDN adaptation drives, application program sends the operation requests to CDN by this interface unit；CDN adaptation is driven through interface unit and returns operating result to application program.
Further, interface unit is file system interface unit.
Further, the operation requests of the content in content source is included: content read requests；
The operation requests of the contents list in portal server and content information is included the combination of one or more of: search content and check contents list, content information and list information request.
Further, a kind of contents access method, including:
Application program in access to content node drives the operation requests sent portal server to the CDN adaptation that can interact；
CDN adaptation drives according to the operation requests received, and portal server is operated accordingly, and returns operating result to application program.
Further, a kind of access to content node, including: application program and the adaptive driving of content distributing network (CDN) that can interact with application, wherein:
Application program, sends operation requests for driving to CDN adaptation；
CDN adaptation drives, and for according to the operation requests received, operating accordingly, and returns operating result to application program.
Further, CDN adaptation drives and includes: interface unit and CDN that application program is supported access unit, wherein:
The interface unit that application program is supported, for receiving the operation requests that application program sends, and is sent to CDN access unit by this operation requests；
CDN accesses unit, for according to the operation requests received, CDN being operated accordingly, and the interface unit supported by application program returns operating result to application program.
Further, the interface unit of application program support is file system interface unit；
Operation requests includes one or more of: to the operation requests of the content in content source and the operation requests to the contents list in portal server and content information.
Further, CDN adaptation drives and includes: interface unit and portal server that application program is supported access unit, wherein:
The interface unit that application program is supported, for receiving the operation requests that application program sends, and accesses unit by the operation requests of the contents list in portal server and content information is sent to portal server；
Portal server accesses unit, for according to the operation requests received, portal server being operated accordingly, and the interface unit supported by application program returns operating result to application program.
In sum, the present invention by access to content node can be mutual with application program CDN adaptation drive, make application program realize the access to CDN, solve some application programs and can not access CDN or access the problem that CDN cost is too big.
Accompanying drawing explanation
Fig. 1 is the schematic diagram that in prior art, application program accesses CDN, content source and portal；
Fig. 2 is the configuration diagram of the access to content node of present embodiment；
The application program that Fig. 3 is present embodiment drives the schematic diagram accessing content by CDN adaptation；
Fig. 4 is the schematic diagram of CDN adaptation a kind of mode accessing portal of driving of present embodiment；
Fig. 5 is the schematic diagram of the mode of the CDN adaptation driving another kind access portal of present embodiment；
The application program that Fig. 6 is present embodiment drives the schematic diagram browsing portal by CDN adaptation；
Fig. 7 is the schematic diagram of a kind of flow process of the contents access method of present embodiment；
Fig. 8 is the schematic diagram of the another kind of flow process of the contents access method of present embodiment；
The CDN adaptation that Fig. 9 is present embodiment is driven through the schematic diagram that non-file system interface accesses the mode of portal；
Figure 10 be present embodiment contents access method in application program browse the flow chart of yet another method of portal.
Detailed description of the invention
Consider that most of application program can both support file system interface, therefore, present embodiment utilizes the CDN adaptation possessing file system interface drive, make that not there is the application program accessing CDN ability and realize accessing CDN by the file system interface that CDN adaptation drives.
Present embodiment provides a kind of access to content node accessing CDN, including application program, for the parsing of content or present；CDN adaptation drives, and is used for accessing CDN, has file system interface.
CDN adaptation drives and comprises: file system interface unit and CDN access unit.File system interface unit with the request of the universal document system interface application program of file system, and can return result.CDN accesses unit can access CDN, therefrom downloads the contents list from door portal server and content information, and downloads content.
CDN adaptation drives with one or more in file system interface access Portal server and content source, when accessing Portal server, what CDN adaptation driver accepted application program checks content information/check contents list/check list information/search content, CDN adaptation driver accesses portal or CDN and obtains content information/contents list/list information/search content, returns result to application program.
CDN adaptation drives and can also access portal server with non-file system interface, portal browser accesses CDN adaptation driver with non-file system interface, now needing to add non-file system interface unit, CDN adaptation driver accesses CDN, and result returns to portal browser.
CDN adaptation drives and also comprises portal access unit, can directly access portal server.
CDN adaptation drives the content operation request receiving application program, accesses CDN, access result is returned to application program, including one or more of:
Content is opened: when CDN adaptation drives the content received from application program to open request, inquire about content download location in CDN.
Content reads: CDN adaptation drives and receives the content read requests from application program, downloads content from CDN, returns to application program.Application program can read each several part of a content successively in order, it is also possible to out of order.
CDN adaptation drives can predict the content that application program will read, and before application program initiates the request of this content of reading, accesses CDN in advance and downloads this content.If the content that application program to read has been driven by CDN adaptation and has been downloaded and stored at this locality, then do not need again to download this content, directly the content downloaded can be returned to application program.
Present embodiment additionally provides a kind of contents access method, including: the first application program accesses door portal server, obtains contents list and content information, browses for user；Selection according to user, first application call the second application program accesses the content that in contents list, user specifies；Second application program perhaps content segments in specifying to CDN adaptation driving request user；CDN adaptation drives and accesses the interior perhaps content segments that CDN download user specifies, and returns to the second application program.
First application program and the second application program can be same programs, are now absent from the operation of first application call the second application program.
First application program is accessed door portal server and can be driven by CDN adaptation, it is also possible to accesses portal by CDN, or directly accesses portal.
Second application program accesses CDN adaptation by file system interface and drives.
CDN adaptation drives and accesses Portal server and content source with file system interface, when accessing Portal server, what CDN adaptation driver accepted application program checks content information/check contents list/check list information/search content, CDN adaptation driver accesses portal or CDN and obtains content information/contents list/list information/search content, returns result to application program.
CDN adaptation drives and can also access portal server with non-file system interface, portal browser accesses CDN adaptation driver with non-file system interface, now needing to add non-file system interface unit, CDN adaptation driver accesses CDN, and result returns to portal browser.
CDN adaptation drives the operation requests to the content in content source receiving application program, accesses CDN, accesss result is returned to application program, and operation requests content described above is opened, content reading and pre-read etc..
Present embodiment is described in detail, it is necessary to explanation, when not conflicting, the embodiment in present embodiment and the feature in embodiment can be mutually combined below in conjunction with accompanying drawing.
Fig. 2 is the access to content node of present embodiment, and CDN is by the content delivery of content source to access to content node, and access to content node obtains the content that content source provides from CDN, and this node includes: application program, for the parsing of content or present；CDN adaptation drives, and is used for accessing CDN, has file I/O interface.
Fig. 3 is that in present embodiment, application program drives the method accessing content by CDN adaptation, and CDN adaptation drives and content has been rendered as file in file system, and therefore content hereinafter and file are same target, including:
Step 301: the application program of access to content node opens certain file in CDN to CDN adaptation driving request；
Step 302:CDN adaptation drives the download location inquiring about this content to CDN；
In step 302, whether CDN can also verify content and exist and whether access to content node possesses access rights etc..In this, it is assumed that access to content node possesses the authority accessing content, and CDN adaptation drives the download location inquiring content, and otherwise, CDN adaptation drives the response returning file open failed to application program, process ends.
Step 303: after inquiring download location, CDN adaptation drives and successfully responds to application program return File Open；
Step 304: application program is to first piece of CDN demand file；
Step 305: according to application requests, CDN adaptation drives download file from CDN first piece；
Step 306:CDN adaptation drives and returns to application program by first piece of file；
Step 307:CDN adaptation drives prediction application program will need second piece of file, download file in advance from CDN second piece；
Step 308: application program is to second piece of CDN demand file；
Step 309:CDN adaptation drives and returns to application program by second piece of file.
Agreement and message flow that the download location of above-mentioned CDN adaptation driving inquiry content and download content adopt are determined by CDN, identical with the agreement adopted in the application program inquiry content download location possessing access CDN ability and download content and message flow.
CDN adaptation drive entire content need not be downloaded, but according to application program access the application program being actually needed and predicting access need download contents fragment, thus reducing the burden of network traffics and CDN.
The CDN adaptation that Fig. 4 and Fig. 5 is present embodiment drives the two kinds of implementation schematic diagrams accessing portal, wherein:
As shown in Figure 4, CDN adaptation drives and comprises file system interface unit, CDN access unit and portal access unit, accesses unit by the portal increased and can directly access portal server.In this case, it does not have utilize CDN to help portal server distribution contents list and content information.Compare content itself, and the data of contents list and essential information are little, require relatively low to network quality, therefore, under some scene, it is possible to come help content source only with CDN and carry out content distribution, help portal server distribution contents list and content information without CDN.
As it is shown in figure 5, CDN adaptation drives and comprises file system interface unit and CDN and access unit, it is possible to access unit access CDN by CDN, it is thus achieved that via the CDN content from CDN paid with from the contents list of portal server and content information.
The application program that Fig. 6 is present embodiment drives the flow chart browsing portal server by CDN adaptation, and this flow process includes:
Step 601: application program browses listed files or classification to CDN adaptation driving request；
Application program can select to check a certain classification, such as the listed files of film, music or novel.
Step 602:CDN adaptation drives downloads listed files or classification from CDN or portal；
Step 603:CDN adaptation drives and returns listed files or classification to application program；
Step 604: application program is to CDN adaptation driving request search file；
Application program arranges certain search condition, and search condition can be the combination of following one or more condition: the pouplarity etc. of keyword, file type, paper writer and file that filename comprises.
Step 605:CDN adaptation drives the list inquiring about and obtaining the file meeting search condition from CDN or portal；
Step 606:CDN adaptation drives and returns Search Results to application program；
Search Results is consistent with the listed files of search condition.When not having qualified file in CDN, list can be empty.
Step 607: application program drives to CDN adaptation and sends the essential information request checking specified file；
Essential information can comprise following one or more combination: file size, file type and file grading.If file is film, essential information can also include film story introduction, film review and film definition etc..
Step 608:CDN adaptation drives the essential information inquiring about specified file from CDN or portal；
Step 609:CDN adaptation drives the essential information returning specified file to application program.
In the present embodiment, file and content are synonyms.File is divided into multiclass, every class file can be further continued for classification one or many.Such as, file is first divided into film, music and novel three major types, and film is sub-divided into black and white and colored two big classes, and cinecolour is further divided into the multiclass such as comedy, romance movie, science fiction film and horror film.
In the present embodiment, CDN adaptation drives and can the information that be derived from portal be presented with the form of file system.Owing to big multiple utility program can access file system, also just the form to access file system the contents list and content information that are derived from portal can be accessed.
In the present embodiment, CDN adaptation drives and can the information that be derived from portal be presented with the form of non-file system.The appearance form of non-file system can provide more information being derived from portal for greater flexibility for application program, but this requires that application program can access CDN adaptation with the interface (such as XMLRPC interface) of non-file system and drive, and CDN adaptation needs in driving to increase the interface unit being connected with application program to support new interface shape.
In the present embodiment, selection according to user, application program can one or many search file, one or many request can browse different classes of contents list, the essential information of different file can be checked by one or many, and application program search file, browsing content list and check that the order of document base information can be any.
Fig. 7 is the schematic diagram of a kind of flow process of the contents access method of the present embodiment, the contents access method of the present embodiment, including:
Step 701: the first application program obtains the contents list from door portal server and content information, browses for user；
User passes through this step, which can view content can access, such as can view the list of the film that may be viewed by, and some essential informations of certain concrete content can be checked, such as can view the information such as the duration of a certain portion film, definition and content introduction, so that user determines specifically access which content, as determined to watch any film according to interest.
Step 702: according to user instruction, the first application program is driven by CDN adaptation and accesses given content；
User instruction refers to the access instruction selecting certain content, and the form of instruction can be click on thinking the icon etc. that the link of access content and double-click want to access content.Application program drives reading of content or content segments with file I/O interface to CDN adaptation.Such as, user to watch via CDN pay film, application program can first read a beginning part for film and play to user, along with play carrying out and be successively read film further part.If the user sees that half is not desired to watch (closedown application program), or skip some fragments of film, then do not need to read the part that film does not access.
Application program can be that the picture possessing local disk browsing file and access function checks software, video jukebox software and music player software etc., and the content specifically accessed by user determines.Application program can also be able to by network browsing portal server and be able to access that the picture of local disk file checks software, video jukebox software and music player software etc..
Fig. 8 is the another kind of schematic flow sheet of the contents access method of the present embodiment, and in the present embodiment, the first application program and the second application program are two different programs, and the contents access method of the present embodiment includes:
Step 801: the first application program obtains the contents list from door portal server and content information, browses for user；
First application program is usually web browser or local disk browser, it is also possible to be the application program being exclusively used in and browsing portal.
Step 802: according to user instruction, first application call the second application program accesses the given content in contents list；
For movie contents payment, after user determines to watch certain film, it is possible to accessed the film specified by first application call the second application program.If the first application program is web browser, user can pass through to click the viewing chain of film in the first application program and fetch and call the second application program；If the first application program is local disk browser, user can double-click the icon of film in the first application program and call the second application program.
Step 803: the second application program is to CDN adaptation driving request given content or content segments.
Second application program can be that picture checks software, video jukebox software or music player software etc., and the content specifically accessed by user determines.Such as, when user to watch via the CDN film paid, the second application program is video jukebox software, and the second application program drives reading of content or content segments with file I/O interface to CDN adaptation；Second application program can first read film beginning a part play to user, along with play carrying out and be successively read film further part.If the user sees that half is not desired to watch (closing the second application program), or skip some fragments of film, then do not need to read the part that film does not access.
Fig. 9 is that CDN adaptation drives the schematic diagram accessing portal server with non-file system interface, portal browser accesses CDN adaptation driver with non-file system interface, now need to add non-file system interface unit, CDN adaptation driver accesses CDN, and result returns to portal browser.
Figure 10 is the method that in embodiment, application program obtains the contents list from door portal server and content information.Contents list and content information itself are also the contents of a kind of form, and CDN can also help portal server to pay the content of this form to access to content node.
In Figure 10, application program drives the contents list and content information that access from portal server by CDN adaptation.In this case, application program can not possess access network capabilities, it is possible to does not possess access CDN ability.Application program can be that local disk file browser maybe can only access the video player of local file, Photo Viewer etc..
One of ordinary skill in the art will appreciate that all or part of step in said method can be carried out instruction related hardware by program and complete, program can be stored in computer-readable recording medium, such as read only memory, disk or CD etc..Alternatively, all or part of step of above-described embodiment can also use one or more integrated circuit to realize.Correspondingly, each module in above-described embodiment can adopt the form of hardware to realize, it would however also be possible to employ the form of software function module realizes.The present invention is not restricted to the combination of the hardware and software of any particular form.
Certainly; the present invention also can have other multiple enforcement use-cases; when without departing substantially from present invention spirit and essence thereof; those of ordinary skill in the art are when can make various corresponding change and deformation according to the present invention, but these change accordingly and deformation all should belong to the scope of the claims appended by the present invention.
Claims (9)
1. a contents access method, including:
Application program in access to content node drives module to send the operation requests to CDN to the content distributing network CDN adaptation that can interact；
Described CDN adaptation drives module according to the operation requests received, and described CDN is operated accordingly, and returns operating result to described application program；
Drive in described CDN adaptation and module comprise the interface unit that described application program is supported,
Described interface unit is file system interface unit.
2. the method for claim 1, it is characterised in that:
The operation requests to CDN that described application program sends includes one or more of: to the operation requests of the content in content source and the operation requests to the contents list in portal server and content information.
3. the method for claim 1, it is characterised in that:
Described application program sends the described operation requests to CDN by this interface unit；Described CDN adaptation drives module to return operating result by described interface unit to described application program.
4. method as claimed in claim 2, it is characterised in that:
The described operation requests to the content in content source includes: content read requests；
The described operation requests to the contents list in portal server and content information includes the combination of one or more of: searches for content and checks contents list, content information and list information request.
5. a contents access method, including:
Application program in access to content node drives module to send the operation requests to portal server to the content distributing network CDN adaptation that can interact；
Described CDN adaptation drives module according to the operation requests received, and described portal server is operated accordingly, and returns operating result to described application program；
Drive in described CDN adaptation and module comprise the interface unit that described application program is supported,
Described interface unit is file system interface unit.
6. an access to content node, including: application program and the content distributing network CDN adaptation that can interact with described application drive module, wherein:
Described application program, for driving module to send operation requests to CDN adaptation；
Described CDN adaptation drives module, for according to the operation requests received, operating accordingly, and returns operating result to described application program；
Drive in described CDN adaptation and module comprise the interface unit that described application program is supported,
The interface unit of described application program support is file system interface unit.
7. access to content node as claimed in claim 6, it is characterised in that described CDN adaptation drives module also to include: CDN accesses unit, wherein:
The interface unit that described application program is supported, for receiving the operation requests that described application program sends, and is sent to described CDN access unit by this operation requests；
Described CDN accesses unit, and for according to the operation requests received, CDN being operated accordingly, and the interface unit supported by described application program returns operating result to described application program.
8. access to content node as claimed in claim 7, it is characterised in that:
Described operation requests includes one or more of: to the operation requests of the content in content source and the operation requests to the contents list in portal server and content information.
9. access to content node as claimed in claim 6, it is characterised in that described CDN adaptation drives module also to include: portal server accesses unit, wherein:
The interface unit that described application program is supported, for receiving the operation requests that described application program sends, and accesses unit by the operation requests of the contents list in portal server and content information is sent to described portal server；
Described portal server accesses unit, and for according to the operation requests received, described portal server being operated accordingly, and the interface unit supported by described application program returns operating result to described application program.
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