CN104320681B - A kind of CDN returns the method and system of source service - Google Patents
A kind of CDN returns the method and system of source service Download PDFInfo
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- CN104320681B CN104320681B CN201410625250.4A CN201410625250A CN104320681B CN 104320681 B CN104320681 B CN 104320681B CN 201410625250 A CN201410625250 A CN 201410625250A CN 104320681 B CN104320681 B CN 104320681B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
- H04N21/262—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists
- H04N21/26208—Content or additional data distribution scheduling, e.g. sending additional data at off-peak times, updating software modules, calculating the carousel transmission frequency, delaying a video stream transmission, generating play-lists the scheduling operation being performed under constraints
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
- H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
- H04N21/239—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests
- H04N21/2393—Interfacing the upstream path of the transmission network, e.g. prioritizing client content requests involving handling client requests
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/80—Generation or processing of content or additional data by content creator independently of the distribution process; Content per se
- H04N21/85—Assembly of content; Generation of multimedia applications
- H04N21/858—Linking data to content, e.g. by linking an URL to a video object, by creating a hotspot
- H04N21/8586—Linking data to content, e.g. by linking an URL to a video object, by creating a hotspot by using a URL
Abstract
The present invention is applied to communication technical field, there is provided a kind of CDN returns the method and system of source service, and this method includes：Received from client and carry the content requests that content provides network side content identification in content；Content identification is parsed from content requests, and time source address for returning source address query interface inquiry content of content provider network is called according to content identification；Source operation is performed back according to source address is returned.It can help Virtual network operator to introduce more CDN softwares and equipment supplier, the distribution efficiency of content between system between content supplier and Virtual network operator is improved simultaneously, the risk that Virtual network operator is transformed existed system is reduced, preferably completes the transmission that matchmaker provides file.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of CDN to return the method and system of source service.
Background technology
OTT TV (Over The Top TV) refer to the Video service based on open the Internet, terminal can be television set,
Computer, set top box, PAD, smart mobile phone etc..B2B (Business-to-business e-commerce model, enterprise pair
The electronic business mode of enterprise) refer to marketing relationship between business to business, it by intranet, by B2B websites with
Client combines closely, and by the fast reaction of network, more preferable service is provided for client, so as to promote the business of enterprise to send out
Exhibition.B2B OTT TV are content supplier (ICP, Internet Content Provider) and Virtual network operator cooperation mutual
The television services carried out in networking, integrate the multiple technologies such as multimedia, communication, provided by internet towards television terminal
It is live, review, the system of the various video service such as program request and application, system is directed to the network characteristicses of internet, employs multi-code
A variety of internet video technologies such as rate network self-adapting, video segment.Whole internet television system is by content supplier's content
Management system, Virtual network operator CDN (Content Distribution Network, content distributing network), terminal and business
Management system is formed.Content distributing network is the key component for forming internet television business, and operator's investment is big, requires linear
Extendible capacity, classification deployment, business flexible development can be met.
In the content transmission of traditional Virtual network operator and content supplier, the pattern of content injection is continued to use, has been taken
Following steps：1st, content supplier provides distribution platform according to the matchmaker for the interface notification Virtual network operator arranged with Virtual network operator
Content is carried out to reach the standard grade.2nd, the matchmaker of Virtual network operator provides the acquisition of information in distribution platform parsing interface to the download address of content.
3rd, the matchmaker of Virtual network operator provides the storage key in CDN node that distribution platform content of announcement provider corresponds to.4th, content carries
Content is carried out for business to reach the standard grade processing.5th, operator carries out media text corresponding to content according to the download address got in step 2
The download work of part.From the above description, it can be seen that network operator system employs strict injection way, i.e. content must be
On the CDN of Virtual network operator it is ready after can just provide the user service, content is once reached the standard grade, then corresponding media file must be grown
Phase resides in the CDN storages of Virtual network operator.
With the continuous development of technology and business, the demand of new CDN technologies is introduced to Virtual network operator also continuous
Lifting.Currently with HLS (HTTP Live streaming, the Streaming Media based on HTTP) be representative dynamic code rate technology
Progressively substituting existing program request technology, under HLS technical system, the content of an each code check of video can be cut into hundred
Thousands of individual video files sections, in the case, content supplier and network are realized if continuing to continue to use existing injection way
System docking between operator, then what docking complexity, the stability of a system and content were reached the standard grade ageing has very big ask
Topic, for meeting that the content requirements of user and the business development of operator have considerable influence.Therefore in the CDN node newly introduced
Need to use back source module to replace existing injection way to be very important, if but the CDN node that newly introduces use back
Source can bring following a few problems on the existing CDN of Virtual network operator：Existing CDN belongs to online service and (carried for user
For service) system, there is provided return the streaming quality that source service certainly will influence to provide the user；Need to existing CDN systems
System transformation, to support back source technology, but the difficulty and dangerous of original system transformation；Because History of conservancy is invested,
Existing CDN can not be discarded, it is desirable to which original CDN and newly-built CDN coexist, while development service.
In summary, prior art there will naturally be inconvenience and defect in actual use, and it is therefore necessary to improved.
The content of the invention
For it is above-mentioned the defects of, it is an object of the invention to provide a kind of CDN return sources service method and system, it can be helped
Help Virtual network operator to introduce more CDN softwares and equipment supplier, while improve between content supplier and Virtual network operator and be
The distribution efficiency of content between system, the risk that Virtual network operator is transformed existed system is reduced, preferably completes the biography that matchmaker provides file
It is defeated.
To achieve these goals, the present invention provides a kind of method that CDN returns source service, including：
Received from client and carry the content requests that content provides network side content identification in content；
The content identification is parsed from the content requests, and calls the content to provide according to the content identification
Time source address returned source address query interface and inquire about the content of network；
Source operation is performed back according to described time source address.
The present invention also provides the system that a kind of CDN returns source service, including client, content distributing network and content provide
Network, the content distributing network include CDN and return source service node,
The client, which is used to send to the CDN times source service nodes, carries content in content offer network side content
The content requests of mark；
The CDN returns source service node and is used to receive the content requests and is parsed from the content requests in described
Hold mark, and call the source address query interface that returns of the content provider network to inquire about the content according to the content identification
Source address is returned, and the CDN returns source service node and is additionally operable to perform back source operation according to the source address of returning.
In the present invention, content supplier injects content into Virtual network operator without being realized by the interactive interfacing of complexity
CND nodes, it is only necessary to which content supplier will return source request address and be supplied to Virtual network operator CDN node, network fortune by interface
The CDN node for seeking business carries out back source operation from this time source address is crossed, and obtain content from the source service node of content supplier turns again
Client is issued, helps Virtual network operator to introduce more CDN softwares and equipment supplier, while improve content supplier and network
Between operator between system content distribution efficiency, reduce the risk of network operator system transformation, while reduce content and carry
For system between business and Virtual network operator the degree of coupling and docking complexity, shorten docking the cycle, ensure that content it is quick on
Line, the transmission that matchmaker provides file is preferably completed, can preferably meet the content requirements of user.
Brief description of the drawings
Fig. 1 is the theory diagram for the system that a kind of CDN of the present invention returns source service；
Fig. 2 is a kind of system architecture of embodiment of system that CDN of the present invention returns source service；
Fig. 3 is that the interaction diagrams that CDN returns source service are carried out in an embodiment of the present invention；
Figure is the flow chart for the method that a kind of 4 CDN of the present invention return source service.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
In one typical configuration of the application, terminal, the equipment of service network and trusted party include one or more
Processor (CPU), input/output interface, network interface and internal memory.
Internal memory may include computer-readable medium in volatile memory, random access memory (RAM) and/or
The forms such as Nonvolatile memory, such as read-only storage (ROM) or flash memory (flash RAM).Internal memory is computer-readable medium
Example.
Computer-readable medium includes permanent and non-permanent, removable and non-removable media can be by any method
Or technology come realize information store.Information can be computer-readable instruction, data structure, the module of program or other data.
The example of the storage medium of computer includes, but are not limited to phase transition internal memory (PRAM), static RAM (SRAM), moved
State random access memory (DRAM), other kinds of random access memory (RAM), read-only storage (ROM), electric erasable
Programmable read only memory (EEPROM), fast flash memory bank or other memory techniques, read-only optical disc read-only storage (CD-ROM),
Digital versatile disc (DVD) or other optical storages, magnetic cassette tape, the storage of tape magnetic rigid disk or other magnetic storage apparatus
Or any other non-transmission medium, the information that can be accessed by a computing device available for storage.Define, calculate according to herein
Machine computer-readable recording medium does not include non-temporary computer readable media (transitory media), such as the data-signal and carrier wave of modulation.
Fig. 1 is the theory diagram for the system that a kind of CDN of the present invention returns source service, and the system 100 includes client 10, content
Distribution network 20 and content provider network 30, content distributing network 20 include CDN and return source service node 21.Content provider network
30 also include electric program menu service entities 31, index service entity 32 and source service node 33.
Client 10, which is used to send to CDN service node 21, carries content in the side content identification of content provider network 30
Content requests.Specifically, EPG (Electronic Program Guide, electric program menu) of the user in content supplier
Select playing stream media file.Electric program menu service entities 31 generate program request URL according to content play request and sent extremely
Client 10.Client 10 obtains content index file according to program request URL from index service entity 32, and content index file includes
The access information of the index file of sub- content, include content identification in the access information of the index file of sub- content.Client
10 are additionally operable to parse content index file and generate content requests, and content requests carry the index file solicited message of sub- content
And content identification.In stream media technology, the content of an each code check of video can be cut into hundreds and thousands of individual video files
Section, video file section are the sub- content in the present invention.
CDN returns source service node 21 and is used to receive content requests and content identification is parsed from content requests, and according to
The source address of returning for returning source address query interface inquiry content of content provider network is called in content identification, and CDN returns source service section
Point 21 performs back source operation always according to source address is returned.Specifically, in content injection stage, content distributing network 20 can returned content
Identify to content provider network 30, content provider network 30 stores the content and content distributing network of the side of content provider network 30
The corresponding relation of 20 content identification.Content provider network 30 can attach when sub- content index file hyperlink request is generated
Upper content identification.It is interior and the content requests of client 10 carry index file solicited message and the content identification of sub- content
Content distributing network 20 can take content identification, content provider network 30 is according to content mark when calling back source address query interface
Know the corresponding relation with the content of content distributing network 20, get content identification in corresponding to the side of content provider network 30
Hold, then time source address information in the content is returned to CDN times source service nodes 21 of content distributing network 20.
In the operation of the source of returning, CDN returns the sub- content that source service node 21 obtains content from source service node 33, and by son
Hold and send to client 10.Obtained specifically, CDN returns source service node 21 according to source address is returned from index service entity 32 in son
The index file of appearance, and the index file of sub- content is sent to client 10；Client 10 is additionally operable to parse the rope of sub- content
Draw fileinfo and generate the broadcast address information of sub- content；CDN returns source service node 21 and receives client according to sub- content
Sub- content requests that broadcast address information is sent, and sub- content is obtained from source service node 33 according to sub- content requests, and by son
Content is sent to client 10, final to realize back that source operation provides the user service.
CDN returns source service node 21 and caches sub- content, the index file information of sub- content during the operation of the source of returning, from
And when other clients 10 send request for identical content, it is not necessary to carry out back source operation and directly return source service section from CDN
Point 21 sends content to client 10, and matchmaker, which provides file, can be transferred to client 10 faster.
In the present invention, content supplier need not realize the injection network operator of content by the interactive interfacing of complexity
CND nodes, it is only necessary to which content supplier will return source request address and be supplied to Virtual network operator CDN node, network fortune by interface
The CDN node for seeking business carries out back source operation from this time source address is crossed, and obtain content from the source service node of content supplier turns again
Issue client.Because the main purpose of this programme is that solve in old CDN node, it can smoothly increase new CDN edges
Node (being built by other CDN equipment vendors) while solves new CDN fringe nodes by way of Hui Yuan directly to content
The CDN last time sources of service provider, it is not necessary to adjusted to the CDN equipment built.The present invention helps Virtual network operator to introduce more families
CDN softwares and equipment supplier, while the distribution efficiency of content between system between content supplier and Virtual network operator is improved, drop
The risk of low network operator system transformation, while reduce between content supplier and Virtual network operator the degree of coupling of system and right
The complexity connect, shorten the docking cycle, ensure that the Quick thread of content, preferably complete the transmission that matchmaker provides file, Ke Yigeng
Meet the content requirements of user well.
In the present invention, it is to include newly-increased center service node and edge service node that CDN, which returns source service node 21,
Possesses back source service function.Old CDN node can not support HLS Hui Yuan, and HLS is due to multiple index file and substantial amounts of being present
Content is cut into slices, and old CDN can not supported well as technological transformation, and because being realized on old center service node
It is more complicated to return source function, it is big to transform difficult risk, it will influence existing service.The present invention passes through newly-increased center service node
Source service is provided back.User oriented does not provide order program service to the newly-increased center service node, and it is mainly to edge service node
Data are provided and return source service.And edge service node is to contain original CDN edge services node and to node dilatation
Newly-increased CDN edge service nodes.
In general, old and new users is different packets, and different packets is by different CDN node services, in the present invention
In old user be assigned to existing edge C DN nodes, the user of new increment is assigned to newly-increased edge C DN nodes, content
GSLB (Global Server Load Balance, GSLB) module schedules of distribution network 20 can be according to request
Http address on subsidiary user profile dispatch.
For the request from old user directly it is dispatched on original CDN edge services node, for Adding User
Request be to be dispatched on newly-increased CDN edge service nodes.In general suggestion is that user directly accesses newly-increased CDN edges clothes
Business node.In the access entrance link of the index file of the sub- content of the business side of content service providing network 20 generation, contain
Content identification and user profile and user login information, the GSLB modules of content distributing network 20 can determine according to these information
Determine user to be dispatched on original CDN edge services node or newly-increased CDN edge service nodes.Further, since edge
Service node storage total amount is smaller, so content can do superseded deletion, storage access speed here is very fast, but the amount meeting stored
It is smaller, and Centroid belongs to central store, can retain all contents, belongs to storage greatly, but the access speed stored is general,
Service can not be directly provided the user, but the problem of he can avoid multiple Hui Yuan to content and service provider.
In the present invention, content distributing network 20 is receiving the index file solicited message that carries sub- content and interior
When holding the content requests of mark, generally the content requests are distributed to edge service node first, if edge service node does not have
Content is preserved, then edge service node obtains content from newly-increased center service node, if newly-increased center service node does not have yet
There is storage content, then the newly-increased center service node provides back source service.For existing edge C DN nodes, due to
Content employs traditional injection mode, so being not in the problem of being not hit by content, so being saved for existing edge C DN
Will not arrive newly-increased Centroid Hui Yuan for point, the fringe node only increased newly just can when content is not hit by
Newly-increased Centroid request Hui Yuan.
Fig. 2 is a kind of system architecture of embodiment of system that CDN of the present invention returns source service.As shown in Fig. 2 the framework includes
The content provider network 30 of content supplier, the content distributing network 20 of Internet service provider and set top box STB 40.The content
The content provider network 30 of provider includes：Content management entity 34, source service node 33 and electric program menu service are real
Body 31.The content distributing network 20 of Internet service provider includes：Matchmaker provides platform 22, dissemination system 23, GSLB (Global Server
Load Balance, GSLB) dispatch system 24, original matchmaker money service node 25, newly-built matchmaker money service node 26.
Matchmaker is provided file injection content distributing network 20 by content provider network 30, and content distributing network 20 receives set top box
When STB 40 streaming media services are asked, if the buffered matchmaker of content distributing network 20 provides file, provide and service from original matchmaker
Matchmaker's money file is sent to set top box STB 40 by node 25；If the uncached matchmaker of content distributing network 20 provides file, pass through matchmaker
The content identification of money service node returns to interface and inquires about back source address to content provider network 30, and providing service node 26 by newly-built matchmaker carries
For returning source service set top box STB 40 is returned to from the acquisition matchmaker's money file of source service node 33.Wherein, content identification returns to interface
It is CDI information corresponding to the platform content of announcement of Virtual network operator to content service provider；It is network fortune to return source address query interface
The platform of battalion business goes to inquire about time source address of the content in the system of content service provider side, is follow-up pull media file and M3U8
File service.So both are different, it is to be under the jurisdiction of being interacted with external system for Content Management System on the whole
Submodule.
Fig. 3 is that the interaction diagrams that CDN returns source service are carried out in an embodiment of the present invention, and the flow includes：
Step S301, user's point on the terminal APK (AndroidPackage, Android installation kit) of content supplier
Broadcast content.
Step S302, content supplier EPG are to the one-level M3U8 entry addresses of terminal APK returned contents.In HLS schemes
The suffix name of index file is usually " .m3u8 ", and one-level M3U8 entry addresses are foregoing content indexing entrance herein
Address.
Step S303, the terminal APK of content supplier call terminal player.
One-level M3U8 files are obtained at step S304, the M3U8Service of terminal player to content supplier.Should
M3U8Service is foregoing index service entity 32, and one-level M3U8 files are the rope of foregoing content
Quotation part.
Step S305, the M3U8Service of content supplier return to one-level M3U8 files.Preserved in one-level M3U8 files
The entry addresses of two level M3U8 files, the entry address of two level M3U8 files is the index text of foregoing sub- content
The access information of part.The entry address of two level M3U8 files includes the content identification of contents provider side, content identification tool
Body is CPI information.In the entry address of two level M3U8 files, contain content identification and user profile and user logs in letter
Breath, the GSLB modules of content distributing network 20 can determine that user is to be dispatched to original CDN edge services according to these information
On the CDN edge service nodes that node still increases newly.
Step S306, terminal player choose what is included in the one-level M3U8 of suitable code check according to terminal and its network condition
The entry address of two level M3U8 files.Situation based on vedio layering coding, same video include the relatively low layering of resolution ratio
The higher layering with resolution ratio, if the network condition of terminal is bad, or the screen resolution of terminal is told somebody what one's real intentions are, then can be selected point
The relatively low individual-layer data of resolution.Each individual-layer data corresponds to the entry address of different two level M3U8 files in the present invention, and
Terminal player selects the entry address of suitable two level M3U8 files according to bandwidth condition and quality of service requirement.
At step S307, the GSLB of terminal player to Virtual network operator, acquisition request two level M3U8 files.GSLB is realized
Flow allocating on wide area network (including internet) between the service node of different geographical, ensure to take using optimal service node
Be engaged in the client nearest from oneself, so that it is guaranteed that accessing quality.In general,
Step S308, the GSLB of Virtual network operator return to the original CDN node of Virtual network operator by HTTP Code 302
On two level M3U8 document entries address.
Step S309, terminal player root node is according to the 302 two level M3U8 document entries addresses returned, to Virtual network operator
Original CDN node obtains two level M3U8 files up.
Step S310, the original CDN node of Virtual network operator check whether the two level M3U8 files of corresponding content have done
Caching.It is then to enter step S311, otherwise into step S312.
Step S311, the original CDN node of Virtual network operator return to two level M3U8 files.
Step S312, the original CDN node of Virtual network operator obtain two level M3U8 texts at the newly-built CDN node of Virtual network operator
Part.
Step S313, the newly-built CDN node of Virtual network operator check whether the two level M3U8 files of corresponding content have done
Caching.It is then to enter step S314, otherwise into step S315.
Step S314, the newly-built CDN node of Virtual network operator return to two level M3U8 files.
Step S315, the CDI (content identification of Virtual network operator side) in the newly-built CDN node analysis request of Virtual network operator
Information.
Step S316, the newly-built CDN node of Virtual network operator call the CDI Service of content supplier to obtain returning for content
Source address.
Step S317, the CDI Service returned contents of content supplier return source address.
Step S318, the newly-built CDN node of Virtual network operator obtain two level M3U8 at the M3U8Service of content supplier
File.
Step S319, two level M3U8 files corresponding to the M3U8Service returned contents of content supplier.
Step S320, the newly-built CDN node caching two level M3U8 files of Virtual network operator.
Step S321, the newly-built CDN node of Virtual network operator return to two level M3U8 files to the original CDN sections of Virtual network operator
Point.
Step S322, the original CDN node caching two level M3U8 files of Virtual network operator.
Step S323, the original CDN node of Virtual network operator return to two level M3U8 files to terminal player.
Step S324, terminal player record the final Virtual network operator after GSLB 302 is redirected with saving node server
Location.It is the Edge Server nearest apart from terminal that the final Virtual network operator, which saves node,.
Step S325, terminal player parsing two level M3U8 files, obtains TS piece relative addresses.Because existing Streaming Media regards
The suffix of frequency file section is " .ts ", represents streaming media video file section, namely foregoing son using TS pieces herein
Content.
Step S326, terminal generation video file TS broadcast address.The broadcast address=S23 walk obtained address+
TS piece relative addresses.
Step S327, terminal player to the newly-built CDN node request TS sections of Virtual network operator.
Step S328, the newly-built CDN node of Virtual network operator check whether TS sections are buffered, and step is entered if uncached
Rapid S329, cache and then entered step S336.
Step S329, the uncached section of the newly-built CDN node of Virtual network operator is then to please in the newly-built CDN node of Virtual network operator
Ask and obtain TS sections.
Whether step S330, the newly-built CDN node inspection section of Virtual network operator have cached.Enter step if uncached
S330, step S333 is entered if having cached.
Step S331, it is uncached that section is then asked on the service node of source to returning for content supplier.
Step S332, the source service node that returns of content supplier return to TS sections.
Step S333, the newly-built CDN node caching TS sections of Virtual network operator.
Step S334, the newly-built CDN node of Virtual network operator return to TS and cut into slices to the original CDN node of Virtual network operator.
Step S335, the original CDN node caching TS sections of Virtual network operator.
Step S336, the original CDN node of Virtual network operator return to TS and cut into slices to terminal player.
Step S337, terminal player play TS sections.Simultaneously because files in stream media has multiple TS sections, therefore need
The process performed between step S226 to step S337 is circulated to each TS pieces relative address to what is parsed in two level M3U8 texts,
Finished until traveling through, complete the broadcasting of whole files in stream media.
Fig. 4 is the flow chart for the method that a kind of CDN of the present invention returns source service, and the flow is real by system as shown in Figure 1
Existing, the flow includes：
Step S401, received from client and carry the content requests that content provides network side content identification in content.This
Step is realized by CDN service node 21 as shown in Figure 1.
Step S402, content identification is parsed from content requests, and content provider network is called according to content identification
That returns source address query interface inquiry content returns source address.This step is realized by CDN service node 21 as shown in Figure 1.
Step S403, source operation is performed back according to source address is returned.This step passes through CDN service node 21 as shown in Figure 1
Realize.Specifically, include according to the step of source address performs back source operation is returned：Obtained from the source service node of content provider network
The sub- content of content, and sub- content is sent to client.Obtained from the source service node of content provider network in the son of content
Also include before the step of appearance：According to the index file for returning source address from index service entity and obtaining sub- content, and by sub- content
Index file send to client；Client parses the index file information of sub- content and generates the broadcast address letter of sub- content
Breath；Receive the sub- content requests that client is sent according to the broadcast address information of sub- content.
Preferably, the step for carrying the content requests that content provides network side content identification in content is received from client
Also include before rapid：Generate program request URL according to content play request and send to client, program request URL and include content identification；Visitor
Family end obtains content index file according to program request URL from the index service entity of content provider network, and content index file includes
The access information of the index file of sub- content；Client parses content index file and generates content requests, and content requests carry
There is the index file solicited message of sub- content.
Preferably, the flow also includes：Cache sub- content, the index file information of sub- content.
In summary, the present invention can help Virtual network operator to introduce more CDN softwares and equipment supplier, while in raising
Hold the distribution efficiency of content between system between provider and Virtual network operator, reduce the risk of network operator system transformation,
The degree of coupling of system and the complexity of docking between content supplier and Virtual network operator are reduced simultaneously, are shortened the docking cycle, are ensured
The Quick thread of content, the transmission that matchmaker provides file is preferably completed, can preferably meet the content requirements of user.
It should be noted that the present invention can be carried out in the assembly of software and/or software and hardware, for example, can adopt
With application specific integrated circuit (ASIC), general purpose computer or any other realized similar to hardware device.In one embodiment
In, software program of the invention can realize steps described above or function by computing device.Similarly, it is of the invention
Software program (including related data structure) can be stored in computer readable recording medium storing program for performing, for example, RAM memory,
Magnetically or optically driver or floppy disc and similar devices.In addition, some steps or function of the present invention can employ hardware to realize, example
Such as, coordinate as with processor so as to perform the circuit of each step or function.
In addition, the part of the present invention can be applied to computer program product, such as computer program instructions, when its quilt
When computer performs, by the operation of the computer, the method according to the invention and/or technical scheme can be called or provided.
And the programmed instruction of the method for the present invention is called, it is possibly stored in fixed or moveable recording medium, and/or pass through
Broadcast or the data flow in other signal bearing medias and be transmitted, and/or be stored according to described program instruction operation
In the working storage of computer equipment.Here, including a device according to one embodiment of present invention, the device includes using
Memory in storage computer program instructions and processor for execute program instructions, wherein, when the computer program refers to
When order is by the computing device, method and/or skill of the plant running based on foregoing multiple embodiments according to the present invention are triggered
Art scheme.
Certainly, the present invention can also have other various embodiments, ripe in the case of without departing substantially from spirit of the invention and its essence
Know those skilled in the art when can be made according to the present invention it is various it is corresponding change and deformation, but these corresponding change and become
Shape should all belong to the protection domain of appended claims of the invention.
Claims (5)
1. the system that a kind of CDN returns source service, it is characterised in that provide net including client, content distributing network and content
Network, the content distributing network include CDN and return source service node,
The client, which is used to send to the CDN times source service nodes, carries content in content offer network side content identification
Content requests；
The CDN returns source service node and is used to receive the content requests and the content mark is parsed from the content requests
Know, and the Hui Yuan for returning source address query interface and inquiring about the content of the content provider network is called according to the content identification
Address, and the CDN returns source service node and is additionally operable to perform back source operation according to the source address of returning；
The content distributing network also includes not supporting Hui Yuan original matchmaker to provide service node, and the content distributing network receives
During the content requests of the client, if the content distributing network has cached content corresponding to the content requests,
Then service node being provided from original matchmaker, the content is sent to the client；If the uncached institute of content distributing network
Content is stated, then goes back to source address, institute described in the CDN returns source service node to the content provider network inquiry content
State CDN and return source service node according to described time source address, the content is obtained from the source service node of the content provider network
Return to the client.
2. system according to claim 1, it is characterised in that the content provider network includes source service node, described
CDN returns the sub- content that source service node is additionally operable to obtain the content from the source service node, and the sub- content is sent
To the client.
3. system according to claim 2, it is characterised in that the content provider network also includes electric program menu and taken
Entity and index service entity, the electric program menu service entities are used to generate program request according to content play request
URL is simultaneously sent to the client；
The client is additionally operable to obtain content index file from the index service entity according to the program request URL, described interior
Hold the access information of the index file of index file including the sub- content, in the access information of the index file of the sub- content
Including the content identification；
The client is additionally operable to parse the content index file and generates the content requests, and the content requests carry
The index file solicited message of the sub- content and the content identification.
4. system according to claim 3, it is characterised in that the CDN returns source service node and is additionally operable to be returned according to described
Source address obtains the index file of the sub- content from the index service entity, and the index file of the sub- content is sent
To the client；
The client is additionally operable to parse the index file information of the sub- content and generates the broadcast address letter of the sub- content
Breath；
The CDN returns source service node and is additionally operable to receive what the client was sent according to the broadcast address information of the sub- content
Sub- content requests.
5. system according to claim 4, it is characterised in that the CDN returns source service node and is additionally operable to cache the son
The index file information of content, the sub- content.
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| CN201410625250.4A CN104320681B (en) | 2014-11-07 | 2014-11-07 | A kind of CDN returns the method and system of source service |
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| CN201410625250.4A CN104320681B (en) | 2014-11-07 | 2014-11-07 | A kind of CDN returns the method and system of source service |
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| CN104320681B true CN104320681B (en) | 2018-03-09 |
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| CN105450780B (en) * | 2015-12-31 | 2019-01-18 | 深圳市网心科技有限公司 | A kind of CDN system and its return source method |
| CN105872856A (en) * | 2016-03-21 | 2016-08-17 | 乐视云计算有限公司 | Method and system for distributing stream media files |
| CN105824707A (en) * | 2016-04-21 | 2016-08-03 | 乐视控股（北京）有限公司 | Merging back-source method and device for multiple processes of streaming media service |
| CN105872858A (en) * | 2016-04-27 | 2016-08-17 | 亦非云互联网技术（上海）有限公司 | Video sharing method and system, video processing system and client side |
| CN106375471B (en) * | 2016-09-29 | 2019-12-13 | 北京奇艺世纪科技有限公司 | Edge node determination method and device |
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| CN107172186B (en) * | 2017-06-12 | 2019-06-14 | 中国联合网络通信集团有限公司 | Content acquisition method and system |
| CN109525867B (en) * | 2017-09-18 | 2022-06-03 | 中兴通讯股份有限公司 | Load balancing method and device and mobile terminal |
| CN109889917B (en) * | 2017-12-06 | 2020-07-14 | 上海交通大学 | Video transmission method based on cache coding |
| CN109982107A (en) * | 2017-12-27 | 2019-07-05 | 上海文广互动电视有限公司 | The file content injected system and method for tv telecasting control platform |
| CN110120930A (en) * | 2018-02-06 | 2019-08-13 | 阿里巴巴集团控股有限公司 | Obtain method, system and the multimedia equipment of transmission file |
| CN109618195A (en) * | 2018-12-27 | 2019-04-12 | 贵州省广播电视信息网络股份有限公司 | A method of platform injection feedback is provided for handling downstream matchmaker |
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