CN103139236A - Metadata processing method and device, and content delivery network (CDN) intercommunicating system - Google Patents

Metadata processing method and device, and content delivery network (CDN) intercommunicating system Download PDF

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Publication number
CN103139236A
CN103139236A CN201110376492.0A CN201110376492A CN103139236A CN 103139236 A CN103139236 A CN 103139236A CN 201110376492 A CN201110376492 A CN 201110376492A CN 103139236 A CN103139236 A CN 103139236A
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China
Prior art keywords
metadata
distributing network
content distributing
distribution
content
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CN201110376492.0A
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Chinese (zh)
Inventor
和晓艳
李金成
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to CN201110376492.0A priority Critical patent/CN103139236A/en
Priority to PCT/CN2012/078143 priority patent/WO2013075502A1/en
Publication of CN103139236A publication Critical patent/CN103139236A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/2866—Architectures; Arrangements
    • H04L67/289—Intermediate processing functionally located close to the data consumer application, e.g. in same machine, in same home or in same sub-network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/50—Network services
    • H04L67/56—Provisioning of proxy services
    • H04L67/564—Enhancement of application control based on intercepted application data

Abstract

The embodiment of the invention discloses a metadata processing method and device, and a content delivery network (CDN) intercommunicating system. The metadata processing method and device, and the CDN intercommunicating system are used for processing the metadata under the CDN intercommunicating condition. The processing method of the embodiment comprises the following steps that: a first CDN acquires first metadata transmitted by a content provider; the first CDN generates second metadata based on the first metadata and strategic of the first CDN, wherein the second metadata comprise the first metadata and delivery parameters of the second metadata, and the delivery parameters of the second metadata comprise a delivery mode parameter used for indicating a delivery mode of the second metadata; and according to the delivery mode indicated by the delivery mode parameter, the first CDN delivers the second metadata to the second CDN.

Description

A kind of processing method of metadata, device and CDN intercommunicating system
Technical field
The present invention relates to communication technical field, relate in particular to a kind of processing method, device and CDN intercommunicating system of metadata.
Background technology
Content distributing network (CDN, Content Delivery Network) pass through the agreement (IP of intercommunication between existing network, Internet Protocol) the new network architecture of stack one deck in transmission network, the content of website is published to network " edge " near the user, make the user can obtain required content nearby, to solve the situation of present network congestion, improve the response speed of customer access network.Solve technically the slow problem of customer access network response speed little due to the network bandwidth, that user's visit capacity is large, the unequal reason of network point distribution causes comprehensively.
Content supplier (CP, Content Provider) utilizes business that CDN provides to accelerate the issue of content, makes the user of CP can enjoy the service of high quality-of-service.Content supplier is when using CDN to complete the content acceleration, can decide according to the needs of own business content is placed on the central store server of CDN fully or content is still resided on the content source server of oneself, what use for the former is content storage and the buffer memory acceleration capacity that CDN provides, and for latter's use is the content caching acceleration capacity that CDN provides.
In prior art, content supplier is for to needing content that the CDN buffer memory accelerates to describe final payment with Control the content, can define corresponding metadata, for example the CP limiting content only allows in some specific region viewed, perhaps the CP limiting content only allows in certain special time viewed, before CDN really provided service for the user, CP need to be issued to CDN with this part metadata of CP definition, according to this metadata, content delivery is controlled in the follow-up business process for CDN etc.This technology has only been considered directly and the scene of the CDN that CP contracts, but the overlay area of any one independent CDN is all limited, and the user is dispersed in each different zone, therefore must need intercommunication between these independent CDN, network with mutual use the other side just can reach wider overlay area, finally sending the CDN that pays content to the user may not be CDN direct and that CP is signing, and in prior art, the scene for the CDN intercommunication does not relate to, and which metadata need to be transmitted and how metadata is used all and do not related under this scene.
Summary of the invention
The embodiment of the present invention provides a kind of processing method, device and CDN intercommunicating system of metadata, is used for the processing of realization to metadata under the scene of CDN intercommunication.
On the one hand, the processing method of a kind of metadata that the embodiment of the present invention provides comprises:
First content distributing network CDN obtains the first metadata that the CP of content supplier sends;
Described first content distributing network generates the second metadata based on the strategy of described the first metadata and described first content distributing network, described the second metadata comprises the distribution parameters of described the first metadata and the second metadata, the distribution parameters of described the second metadata comprises the ways of distribution parameter, and described ways of distribution parameter is used to indicate the ways of distribution of described the second metadata;
Described first content distributing network is distributed described the second metadata according to the ways of distribution of described ways of distribution parameter indication to the second content distributing network.
On the other hand, the processing method of the another kind of metadata that the embodiment of the present invention provides comprises:
The second content distributing network receives the first content distributing network according to the second metadata of the ways of distribution transmission of the ways of distribution parameter indication of the second metadata, described the second metadata comprises the distribution parameters of the first metadata and described the second metadata, the distribution parameters of described the second metadata comprises the ways of distribution parameter, described ways of distribution parameter is used to indicate the ways of distribution of described the second metadata, and described the first metadata sends to described first content distributing network by the CP of content supplier;
Described second content distributing network is controlled the content that sends to subscriber equipment according to described the second metadata.
On the one hand, a kind of content distributing network CDN that the embodiment of the present invention provides, described CDN are the content distributing network signing with the CP of content supplier, and described CDN comprises:
Acquiring unit is used for obtaining the first metadata that described CP sends;
Generation unit, be used for generating the second metadata based on the strategy of described the first metadata and described first content distributing network, described the second metadata comprises the distribution parameters of described the first metadata and the second metadata, the distribution parameters of described the second metadata comprises the ways of distribution parameter, and described ways of distribution parameter is used to indicate the ways of distribution of described the second metadata;
Dispatching Unit is used for distributing described the second metadata according to the ways of distribution of described ways of distribution parameter indication to described second content distributing network.
On the other hand, the another kind of content distributing network CDN that the embodiment of the present invention provides, described CDN comprises:
Acquiring unit, be used for receiving the first content distributing network according to the second metadata of the ways of distribution transmission of the ways of distribution parameter indication of the second metadata, described the second metadata comprises the distribution parameters of the first metadata and described the second metadata, the distribution parameters of described the second metadata comprises the ways of distribution parameter, described ways of distribution parameter is used to indicate the ways of distribution of described the second metadata, and described the first metadata sends to described first content distributing network by the CP of content supplier;
The content-control unit is used for according to described the second metadata, the content that sends to subscriber equipment being controlled.
On the one hand, a kind of CDN intercommunicating system that the embodiment of the present invention provides comprises: the CP of content supplier, as the aforementioned with the signing content distributing network of CP, aforementioned not with signing content distributing network, the subscriber equipment of CP, wherein,
Described CP is used for to providing the first metadata with the signing content distributing network of CP;
Described subscriber equipment is used for to sending service requesting information with the signing content distributing network of CP.
As can be seen from the above technical solutions, the embodiment of the present invention has the following advantages:
In embodiments of the present invention, the first content distributing network generates the second metadata based on the strategy of the first metadata and first content distributing network, wherein, the second metadata comprises the distribution parameters of the first metadata and the second metadata, the distribution parameters of the second metadata comprises the ways of distribution parameter, the first content distributing network is distributed the second metadata according to the ways of distribution of this ways of distribution parameter indication to the second content distributing network, so that the second content distributing network is controlled the content that sends to subscriber equipment according to the second metadata that receives.
Description of drawings
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, during the below will describe embodiment, the accompanying drawing of required use is done to introduce simply, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, to those skilled in the art, can also obtain according to these accompanying drawings other accompanying drawing.
The schematic diagram of an embodiment of the processing method of the metadata that Fig. 1 provides for the embodiment of the present invention;
The schematic diagram of another embodiment of the processing method of the metadata that Fig. 2 provides for the embodiment of the present invention;
The schematic diagram of an embodiment of the content distributing network that Fig. 3 provides for the embodiment of the present invention;
The schematic diagram of another embodiment of the content distributing network that Fig. 4 provides for the embodiment of the present invention;
The schematic diagram of an embodiment of the CDN intercommunicating system that Fig. 5 provides for the embodiment of the present invention;
The schematic diagram of another embodiment of the CDN intercommunicating system that Fig. 6 provides for the embodiment of the present invention.
Embodiment
The embodiment of the present invention provides a kind of processing method, device and CDN intercommunicating system of metadata, is used for the processing of realization to metadata under the scene of CDN intercommunication.
For make goal of the invention of the present invention, feature, advantage can be more obvious and understandable, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, the embodiments described below are only the present invention's part embodiment, but not whole embodiment.Based on the embodiment in the present invention, the every other embodiment that those skilled in the art obtains belongs to the scope of protection of the invention.
The embodiment of the present invention provides a kind of processing method of metadata, as shown in Figure 1, specifically comprises and can comprise:
101, the first content distributing network obtains the first metadata that the CP of content supplier sends.
in embodiments of the present invention, CDN direct and that CP is signing is referred to as upstream content distributing network (UpCDN, Up Content Delivery Network), be the first content distributing network of describing in the embodiment of the present invention, be referred to as downstream content distributing network (DownCDN with the CDN of first content distributing network intercommunication, Down Content Delivery Network), be the second content distributing network of describing in the embodiment of the present invention, the signing Internet resources that can mutually use the other side of second content distributing network and first content distributing network, in the CDN intercommunicating system, finally process by the second content distributing network that the user asks and be that the user pays content, in actual applications, may there be a plurality of second content distributing networks for a CDN intercommunicating system, first order second content distributing network and first content distributing network are signing, follow-up second content distributing network is signing with the second content distributing network of previous stage respectively again, and directly pay content for the user by the second content distributing network of afterbody.
in embodiments of the present invention, CP and first content distributing network are signing, CP can use the central store ability of first content distributing network and buffer memory acceleration capacity to help to realize the content delivery business as subscriber equipment, after signing, CP is in order to describe content or the content delivery of follow-up CDN to be controlled, CP has defined corresponding metadata, these metadata with the CP definition in the embodiment of the present invention are referred to as the first metadata, CP uploads the first metadata to the catalogue that prior and first content distributing network consult, the first content distributing network can receive the first metadata that CP sends, and receive successfully to the CP feedback.
Need to prove, in embodiments of the present invention, the first metadata specifically can comprise: the data that CP describes content or the data that content delivery is controlled.The data that content delivery is controlled specifically can comprise: limiting content only allows to be used in the specific region and/or limiting content only allows to be used in special time; For example, CP does not allow the user except Beijing Area to use this content, and CP does not allow the user to use this content etc. in every day after the 22:00 point.
102, the first content distributing network generates the second metadata based on the strategy of the first metadata and first content distributing network, and the second metadata comprises the distribution parameters of the first metadata and the second metadata, and wherein, distribution parameters comprises the ways of distribution parameter.
In embodiments of the present invention, after the first content distributing network receives the first metadata, the first content distributing network can generate the second metadata based on the strategy of this first metadata and first content distributing network, the second metadata that wherein generates comprises the distribution parameters of the first metadata and the second metadata, distribution parameters refers to the parameter how the second metadata is distributed to the second content distributing network, distribution parameters comprises the ways of distribution parameter, and the ways of distribution parameter is used to indicate the ways of distribution of the second metadata.the first content distributing network can according to CDN service provider or keeper pre-define strategy determine the ways of distribution parameter, the ways of distribution parameter specifically can comprise three kinds: static pre-ways of distribution, Dynamic Acquisition mode and mixing ways of distribution, wherein, static pre-ways of distribution refers to the second content distributing network and receives that the user equipment start service solicited message is distributed to metadata in the second content distributing network by the first content distributing network before, is controlled the content that sends to subscriber equipment according to the second metadata by the second content distributing network, the Dynamic Acquisition mode refers to after the second content distributing network is received the user equipment start service solicited message, by the second content distributing network to first content distributing network request metadata, then by the first content distributing network, metadata is sent in the second content distributing network, the content that sends to subscriber equipment is controlled according to the second metadata by the second content distributing network, mixing ways of distribution refers to and sends to the second content distributing network by the pre-ways of distribution of static state for the part metadata for the second metadata, remainder metadata for the second metadata sends to the second content distributing network by the Dynamic Acquisition mode, namely mix in ways of distribution the second metadata is divided into two parts, wherein a part of metadata adopts the ways of distribution of static pre-ways of distribution to send to the second content distributing network, adopt the ways of distribution of Dynamic Acquisition mode to send to the second content distributing network remainder metadata, need to prove, decide which in the second metadata partly to send by static pre-ways of distribution by concrete scene in actual applications, which partly sends by the Dynamic Acquisition mode, be not construed as limiting herein, wherein, at least comprise the memory address of the second metadata in the first content distributing network in the part metadata that issues by the pre-ways of distribution of static state, afterbody second content distributing network can be according to described memory address directly to first content distributing network acquisition request remainder metadata.
In embodiments of the present invention, the strategy of first content distributing network can be pre-defined by CDN service provider or keeper, in actual applications, multiple strategy can be arranged, and next is illustrated, and does not do restriction.for example: central store ability and the buffer memory acceleration capacity of the described second content distributing network that first content distributing network and the intercommunication of second content distributing network need to be used, the buffer memory acceleration capacity of the second content distributing network that first content distributing network and the intercommunication of second content distributing network need to be used, the injection mode of content is static pre-the injection, the injection mode of content is the Dynamic Acquisition mode, the perhaps reason of first content distributing network and the intercommunication of second content distributing network, the reason of first content distributing network and the intercommunication of second content distributing network specifically can comprise the flow unloading, expanded areas of coverage etc.
Need to prove, in actual applications, for strategy generation second metadata of step 102 first content distributing network based on the first metadata and first content distributing network, a kind of attainable mode is specifically can comprise:
A1, first content distributing network are defined as static pre-ways of distribution according to strategy with ways of distribution;
A2, first content distributing network generate the second metadata according to the first metadata and static pre-ways of distribution.
Wherein, the ways of distribution parameter is designated as static pre-ways of distribution, and the distribution parameters in the second metadata also comprises the distribution depth parameter, and wherein, the distribution depth parameter is the second metadata allows distribution in the CDN intercommunicating system the degree of depth.
Need to prove, in actual applications, distribution parameters can also comprise many kinds of parameters, such as: validity time interval parameter, subscription authentication parameter etc. are verified in time-out time parameter, timing, will provide respectively detailed description in subsequent embodiment.
For steps A 1, the first content distributing network can be determined different ways of distribution according to the difference of strategy, next is described in detail:
When CP need to use the central store ability of second content distributing network and buffer memory acceleration capacity, the first content distributing network can be defined as the ways of distribution parameter static pre-ways of distribution according to this strategy; When the injection mode that indicates content in the first metadata that CP issues was injected for static state is pre-, the first content distributing network can be defined as the ways of distribution parameter static pre-ways of distribution according to this strategy; When first content distributing network and the intercommunication of second content distributing network former because during the flow unloading, the first content distributing network can be defined as the ways of distribution parameter static pre-ways of distribution according to this strategy, can certainly be according to one or more the combination in aforementioned condition, the first content distributing network can be defined as the ways of distribution parameter static pre-ways of distribution according to this strategy.
For steps A 2, the ways of distribution that comprises when the second metadata that generates is during for static pre-ways of distribution, the distribution parameters of the second metadata can also comprise the distribution depth parameter, and the distribution depth parameter is the second metadata allows distribution in the CDN intercommunicating system the degree of depth.For example, in the embodiment of the present invention, can to set distribution depth parameter value be 4 to the first content distributing network, representing that this second metadata can also be connected except the first content distributing network is handed down to three grades of CDN, suppose these three grades of CDN be specially second content distributing network, second content distributing network 1, second content distributing network 2, the second metadata distribution path can for: first content distributing network-＞the second content distributing network-＞second content distributing network 1-＞second content distributing network 2.Even this moment second content distributing network 2 and 3 intercommunications of second content distributing network, but because distribution depth parameter value is 4, be zero according to this distribution depth parameter, the second metadata can not continue to be distributed to second content distributing network 3.
Need to prove, in actual applications, for strategy generation second metadata of step 102 first content distributing network based on the first metadata and first content distributing network, another kind of attainable mode is specifically can comprise:
A3, first content distributing network are defined as the Dynamic Acquisition mode according to strategy with ways of distribution;
A4, first content distributing network generate the second metadata according to the first metadata and Dynamic Acquisition mode, and the ways of distribution of the ways of distribution parameter indication in the distribution parameters of the second metadata is the Dynamic Acquisition mode.
For steps A 3, the first content distributing network can be determined different ways of distribution according to the difference of strategy, next is described in detail:
When CP only needed to use the buffer memory acceleration capacity of second content distributing network, the first content distributing network can be defined as ways of distribution the Dynamic Acquisition mode according to this strategy; When the injection mode that indicates content in the first metadata that CP issues was the Dynamic Acquisition mode, the first content distributing network can be defined as ways of distribution the Dynamic Acquisition mode according to this strategy; When first content distributing network and the intercommunication of second content distributing network former because during expanded areas of coverage, the first content distributing network can be defined as ways of distribution the Dynamic Acquisition mode according to this strategy, can certainly be according to one or more the combination in aforementioned condition, the first content distributing network can be defined as the ways of distribution parameter Dynamic Acquisition mode according to this strategy.
Need to prove, in actual applications, for strategy generation second metadata of step 102 first content distributing network based on the first metadata and first content distributing network, another kind of attainable mode is specifically can comprise:
A5, first content distributing network are defined as mixing ways of distribution according to strategy with ways of distribution;
A6, first content distributing network generate the second metadata according to the first metadata and mixing ways of distribution.
Wherein, the ways of distribution of the indication of the ways of distribution parameter in the distribution parameters of the second metadata is for mixing ways of distribution.
For steps A 5, the first content distributing network can be determined different ways of distribution according to the difference of strategy, next is described in detail:
When the strategy of first content distributing network is when making the second content distributing network directly from first content distributing network acquisition request the second metadata, this second content distributing network is directly paid content to subscriber equipment, and the first content distributing network can be defined as ways of distribution to mix ways of distribution according to this strategy.For example, in a CDN intercommunicating system, with CP signing be the first content distributing network, have a plurality of second content distributing networks in this system, in order to make direct second content distributing network from content to subscriber equipment that pay directly from first content distributing network acquisition request the second metadata, the first content distributing network can be defined as mixing ways of distribution with ways of distribution according to strategy.
need to prove, in embodiments of the present invention, the first content distributing network is respectively two kinds of different metadata from the first metadata and other the second metadata that the first content distributing network generates step 102 that CP receives in step 101, in step 101 why called after the first metadata just for subsequent step 102 in the second metadata of occurring distinguish, its " first " and " second " do not have on sequential or any relation in logic, not the second metadata to occur when the first metadata occurring, certainly when the second metadata occurring, the first metadata neither appear, only in order to represent it is respectively two different metadata.Certainly can also adopt other naming method in order to distinguish the metadata that occurs respectively in step 101 and step 102, as long as can represent that this metadata is two different metadata, for example, can distinguish called after metadata a and metadata b etc.
103, the first content distributing network is distributed the second metadata according to the ways of distribution of ways of distribution parameter indication to the second content distributing network.
In embodiments of the present invention, after the first content distributing network generates the second metadata, distribute the second metadata according to the ways of distribution of ways of distribution parameter indication to the second content distributing network.
In actual applications, the first content distributing network specifically can comprise to second content distributing network distribution the second metadata according to the ways of distribution of ways of distribution parameter indication: the first content distributing network adopts the ways of distribution of static pre-ways of distribution to second content distributing network distribution the second metadata.If ways of distribution is static pre-ways of distribution, the first content distributing network specifically can comprise the steps: to second content distributing network distribution the second metadata according to the ways of distribution of ways of distribution parameter indication
B1, first content distributing network send a notification message to the second content distributing network, and notification message comprises the memory address of the second metadata, so that the second content distributing network is to the memory address transmission metadata request message of the second metadata;
B2, first content distributing network receive the metadata request message that the second content distributing network sends;
B3, first content distributing network transmit the second metadata according to this metadata request message to the second content distributing network.
for step B1, when ways of distribution is static pre-ways of distribution, the first content distributing network initiatively sent a notification message so that the second content distributing network obtains the second metadata to the second content distributing network before the request of subscriber equipment is arrived, wherein comprise the memory address of the second metadata in notification message, can also comprise obtain manner in notification message in addition, need to prove, if in the embodiment of the present invention between first content distributing network and second content distributing network by appointment adopt well which type of obtain manner to realize the transmission of the second metadata, do not need to comprise obtain manner in notification message, do not adopt which type of obtain manner if make an appointment between first content distributing network language second content distributing network, need to comprise obtain manner in notification message.for example in the embodiment of the present invention, memory address is the URL(uniform resource locator) (URL of the second metadata in the first content distributing network, Uniform Resource Locator), http://sina.www.cdn.com/metadata/sina.xml for example, obtain manner is for passing through HTML (Hypertext Markup Language) (HTTP, Hyper Text Transfer Protocol) mode is obtained, certainly still there are other memory address and obtain manner, for example memory address is the file transfer protocol (FTP) (FTP of first content distributing network, File Transfer Protocol) address, obtain manner is the ftp file downloading mode.
For step B2, after the second content distributing network receives this notification message, the second content distributing network responds to first content distributing network feedback notification message sink, then the second content distributing network sends metadata request message to memory address, to obtain the second metadata, namely to first content distributing network request the second metadata.
For step B3, the first content distributing network transmits the second metadata according to metadata request message to the second content distributing network, for example, the first content distributing network transmits the second metadata according to the HTTP mode to the second content distributing network, or the first content distributing network transmits the second metadata according to the ftp file downloading mode to the second content distributing network.
Need to prove, in embodiments of the present invention, the first content distributing network, can also comprise the steps: after second content distributing network transmission the second metadata according to metadata request message
The first content distributing network receives the business request information that subscriber equipment sends, the first content distributing network is controlled so that the second content distributing network carries out content delivery according to the second metadata to subscriber equipment to second content distributing network forwarding service request message.
wherein, because the first content distributing network is CDN direct and that CP is signing, after subscriber equipment is clicked the connection of certain content on the website, at first corresponding business request information is routed in the first content distributing network of directly contracting with CP, the first content distributing network is according to the information in business request information, as the agreement (IP that interconnects between network, Internet Protocol) address, check to find that subscriber equipment is currently located at the first content distributing network not yet covered with networks zone of arriving, the first content distributing network further checks the zone that the CDN of intercommunication covers, the network coverage that check to find the second content distributing network should the zone, can provide service for subscriber equipment by the second content distributing network, therefore user's business request information finally is routed to the second content distributing network.
In actual applications, the first content distributing network specifically can comprise to second content distributing network distribution the second metadata according to the ways of distribution of ways of distribution parameter indication: the first content distributing network adopts the ways of distribution of Dynamic Acquisition mode to second content distributing network distribution the second metadata.If ways of distribution is the Dynamic Acquisition mode, the first content distributing network specifically can comprise the steps: to second content distributing network distribution the second metadata according to the ways of distribution of ways of distribution parameter indication
B4, first content distributing network receive the business request information that subscriber equipment sends;
B5, first content distributing network send to the second content distributing network with business request information, carry the sign of CP under the content of the sign of content of user equipment requests or user equipment requests in business request information;
B6, first content distributing network receive the metadata request message that the second content distributing network sends, and to be described second content distributing network generate according to the sign of CP under the content of the sign of the content of described user equipment requests or described user equipment requests described metadata request message;
B7, first content distributing network transmit the second metadata according to metadata request message to the second content distributing network.
For step B4, because the first content distributing network is CDN direct and that CP is signing, after subscriber equipment was clicked the connection of certain content on the website, at first corresponding business request information was routed in the first content distributing network of directly contracting with CP.
for step B5, the first content distributing network is according to the information in business request information, as the agreement (IP that interconnects between network, Internet Protocol) address, check to find that subscriber equipment is currently located at the first content distributing network not yet covered with networks zone of arriving, the first content distributing network further checks the zone that the CDN of intercommunication covers, the network coverage that check to find the second content distributing network should the zone, can provide service for subscriber equipment by the second content distributing network, therefore user's business request information finally is routed to the second content distributing network.
for step B6, carry the sign of CP under the content of the sign of content of UE request or UE request in business request information, the second content distributing network sends metadata request message to the first content distributing network, carry the sign of the metadata that needs request in metadata request message, it can be concrete meta data file sign, as sina.www.cdn.com/metadata/sina.xml, it can be also content identification, what expression was asked is the metadata of this relevance, as www.cp1.com/video/avantar.rm, it can also be the CP domain name, what expression was asked is all metadata of this CP, as www.cp1.com, UpCDN.
For step B7, after the first content distributing network receives metadata request message, through the identity of second content distributing network is verified, return to the metadata of request.For example, the first content distributing network transmits the second metadata according to the HTTP mode to the second content distributing network, or the first content distributing network transmits the second metadata according to the ftp file downloading mode to the second content distributing network.
In actual applications, if ways of distribution is the mixing ways of distribution, the first content distributing network specifically can comprise the steps: to second content distributing network distribution the second metadata according to the ways of distribution of ways of distribution parameter indication
Ways of distribution for the memory address of the second metadata by the pre-ways of distribution of static state sends to the second content distributing network, specifically can comprise the steps:
B8, first content distributing network send a notification message to the second content distributing network, and notification message comprises the memory address of part metadata, so that the second content distributing network is to the memory address transmission metadata request message of part metadata;
B9, first content distributing network receive the metadata request message that the second content distributing network sends;
B10, first content distributing network transmit memory address according to this metadata request message to the second content distributing network.
Ways of distribution for the residue metadata beyond the memory address of described the second metadata by the Dynamic Acquisition mode sends to the second content distributing network, specifically can comprise the steps:
B11, first content distributing network receive the business request information that subscriber equipment sends;
B12, first content distributing network send to the second content distributing network with business request information, carry the sign of CP under the content of the sign of content of user equipment requests or user equipment requests in business request information;
B13, first content distributing network receive the metadata request message that the second content distributing network sends, and to be described second content distributing network generate according to the sign of CP under the content of the sign of the content of described user equipment requests or described user equipment requests described metadata request message;
B14, first content distributing network remain metadata according to metadata request message to the transmission of second content distributing network.
Step 103 first content distributing network according to the ways of distribution of ways of distribution parameter indication after second content distributing network distribution the second metadata, can also comprise the steps:
When the second metadata also comprises the time-out time parameter, when the overtime inefficacy of the second metadata, the first content distributing network receives the metadata request message that the second content distributing network sends, and the first content distributing network sends the second metadata of upgrading to the second content distributing network.
Wherein, it is that the second metadata arranges a concrete time-out time point that the time-out time parameter refers to, for example the time-out time point is set to 02:00:00 on November 04th, 2011, after if the second content distributing network receives the second metadata, check the time attribute of the second metadata, if surpass this time-out time point, show that these the second metadata all the elements lost efficacy, the second content distributing network is because the overtime inefficacy of the second metadata sends metadata request message to the first content distributing network, to obtain the second metadata of renewal.
Step 103 first content distributing network according to the ways of distribution of ways of distribution parameter indication after second content distributing network distribution the second metadata, can also comprise the steps:
When distribution parameters comprises that also the validity time interval parameter is verified in timing, the first content distributing network receives the second content distributing network according to regularly verifying the checking request message of validity time interval parameter timed sending, if this second metadata is effective, send to the second content distributing network and be proved to be successful message, if the second metadata lost efficacy, send the second metadata of upgrading to the second content distributing network.
Wherein, verify that regularly the validity time interval parameter refers to time interval of setting, this time interval need the second content distributing network regularly verify the validity of the second metadata to the first content distributing network, for example can set interval is 24 hours, the validity of the second metadata can be verified to the first content distributing network every 24 hours second content distributing networks, the second metadata of renewal can be got to guarantee the second content distributing network.
Need to prove, in embodiments of the present invention, the first content distributing network is specifically as follows to second content distributing network distribution the second metadata according to the ways of distribution of ways of distribution parameter indication: the first content distributing network with the second meta-data preservation hereof, the first content distributing network in the mode of file transfer to second content distributing network distribution the second metadata; Or the first content distributing network is carried at the second metadata in message body, and the first content distributing network is distributed the second metadata in the mode of message signalling to the second content distributing network.
For example, the first content distributing network can be with the second metadata store hereof, be transferred to the second content distributing network by this document, the first content distributing network also can be carried at the second metadata message body such as extend markup language (XML, Extensible Markup Language) in, transmit to the second content distributing network by the message signaling.
In embodiments of the present invention, the first content distributing network generates the second metadata based on the strategy of the first metadata and first content distributing network, wherein, the second metadata comprises the distribution parameters of the first metadata, the second metadata, the first content distributing network is distributed the second metadata according to the ways of distribution of ways of distribution parameter indication to the second content distributing network, so that the second content distributing network is controlled the content that sends to subscriber equipment according to the second metadata.
Above embodiment has introduced the processing method to metadata that the embodiment of the present invention is realized by the first content distributing network, next introduce the processing method to metadata that the embodiment of the present invention is realized by the second content distributing network, see also shown in Figure 2ly, comprise step:
201, the second content distributing network receives the first content distributing network according to the second metadata of the ways of distribution transmission of the ways of distribution parameter indication of the second metadata.
Wherein, the second metadata comprises the distribution parameters of the first metadata and the second metadata, the distribution parameters of the second metadata comprises the ways of distribution parameter, the ways of distribution parameter is used to indicate the ways of distribution of described the second metadata, and the first metadata sends to the first content distributing network by the CP of content supplier.
in embodiments of the present invention, be referred to as the downstream content distributing network with the CDN of first content distributing network intercommunication, it is the second content distributing network in the embodiment of the present invention, the signing Internet resources that can mutually use the other side of second content distributing network and first content distributing network, in the CDN intercommunicating system, finally process by the second content distributing network that the user asks and be that the user pays content, in actual applications, may there be a plurality of second content distributing networks for a CDN intercommunicating system, first order second content distributing network and first content distributing network are signing, follow-up second content distributing network is signing with the second content distributing network of previous stage respectively again, second content distributing network by afterbody is directly paid content for the user.
In embodiments of the present invention, the first content distributing network can generate the second metadata based on the strategy of this first metadata and first content distributing network, the second metadata that wherein generates comprises the first metadata and ways of distribution parameter, and the second content distributing network obtains the second metadata from the first content distributing network.Wherein, ways of distribution refers to how to carry out the distribution of metadata in the CDN intercommunicating system, the first content distributing network can according to CDN service provider or keeper pre-define strategy determine ways of distribution, ways of distribution specifically can comprise three kinds: static pre-ways of distribution, Dynamic Acquisition mode and mixing ways of distribution, these three kinds of ways of distribution illustrate the associated description that sees also in above-described embodiment one, repeat no more herein.
Need to prove, in actual applications, the second content distributing network receives the first content distributing network according to the second metadata of the ways of distribution transmission of the ways of distribution parameter indication of the second metadata, and a kind of attainable mode is to comprise:
C1, when ways of distribution is static pre-ways of distribution, the distribution parameters of the second metadata also comprises the distribution depth parameter, the second content distributing network receives the notification message that the first content distributing network sends, notification message comprises the memory address of the second metadata.
C2, second content distributing network send metadata request message according to memory address to the first content distributing network.
C3, second content distributing network receive the second metadata of first content distributing network transmission.
for step C1, when ways of distribution is static pre-ways of distribution, the first content distributing network initiatively sent a notification message to the second content distributing network before the request of subscriber equipment is arrived, so that the second content distributing network obtains the second metadata, wherein, the memory address that comprises the second metadata in notification message, can also comprise obtain manner in notification message in addition, need to prove, if in the embodiment of the present invention between first content distributing network and second content distributing network by appointment adopt well which type of obtain manner to realize the transmission of the second metadata, do not need to comprise obtain manner in notification message, do not adopt which type of obtain manner if make an appointment between first content distributing network language second content distributing network, need to comprise obtain manner in notification message.the second content distributing network receives the notification message that the first content distributing network sends, memory address is the URL of the second metadata in the first content distributing network, http://sina.www.cdn.com/metadata/sina.xml for example, obtain manner is for to obtain by the HTTP mode, memory address and obtain manner that other can certainly be arranged, for example memory address is the FTP address of first content distributing network, obtain manner is the ftp file downloading mode, after the second content distributing network receives this notification message, which just can know to memory address, which kind of obtain manner to obtain the second metadata with.
in addition, the distribution depth parameter is the second metadata allows distribution in the CDN intercommunicating system the degree of depth, for example, in the embodiment of the present invention, can to set distribution depth parameter value be 4 to the first content distributing network, representing that this second metadata can also be connected except the first content distributing network is handed down to three grades of CDN, suppose that these three grades of CDN are specially the second content distributing network, second content distributing network 1, second content distributing network 2, the distribution path of the second metadata can for: first content distributing network-＞the second content distributing network-＞second content distributing network 1-＞second content distributing network 2.Even this moment second content distributing network 2 and 3 intercommunications of second content distributing network, but because distribution depth parameter value is 4, first according to this distribution depth parameter, the second metadata can not continue to be distributed to second content distributing network 3.
For step C2, after the second content distributing network receives this notification message, the second content distributing network responds to first content distributing network feedback notification message sink, then the second content distributing network sends metadata request message according to obtain manner and memory address to memory address, to obtain the second metadata, namely to first content distributing network request metadata.
For step C3, the first content distributing network transmits the second metadata according to obtain manner to the second content distributing network, for example, the first content distributing network transmits the second metadata according to the HTTP mode to the second content distributing network, or, to second content distributing network transmission the second metadata, the second content distributing network receives the second metadata of first content distributing network transmission to the first content distributing network according to the ftp file downloading mode.
Need to prove, step C3 second content distributing network receives and also specifically can comprise the steps: that the second content distributing network will distribute depth parameter and subtract 1 after the second metadata of first content distributing network transmission, whether second content distributing network judgement distribution depth parameter is zero, if the distribution depth parameter is non-vanishing, then with second content distributing network distribution second metadata of the second metadata to next stage, so that the second content distributing network of next stage is controlled the content that sends to subscriber equipment according to the second metadata.
for example: in the embodiment of the present invention, can to set distribution depth parameter value be 4 to the first content distributing network, representing that this second metadata can also be connected except the first content distributing network is handed down to three grades of CDN, suppose that these three grades of CDN are specially the second content distributing network, second content distributing network 1, second content distributing network 2, the distribution path of the second metadata can for: first content distributing network-＞the second content distributing network-＞second content distributing network 1-＞second content distributing network 2, the first content distributing network receives will be distributed depth parameter after the second metadata and subtract 1, then the second metadata is sent to the second content distributing network, the second content distributing network judges that the distribution depth parameter is 3 after receiving the second metadata, after should distributing depth parameter and subtracting 1, send to second content distributing network 1, second content distributing network 1 receives should be distributed depth parameter after the second metadata and subtracted 1, judgement distribution depth parameter is 2, the distribution depth parameter sends to second content distributing network 2, second content distributing network 2 receives will distribute depth parameter after the second metadata and subtract 1 and find that distributing depth parameter at this moment is 0, even this moment second content distributing network 2 and 3 intercommunications of second content distributing network, but because distribution depth parameter value is 4, be zero according to this distribution depth parameter, the second metadata can not continue to be distributed to second content distributing network 3.
Need to prove, in actual applications, the second content distributing network receives the first content distributing network according to the second metadata of the ways of distribution transmission of the ways of distribution parameter indication of the second metadata, and another kind of attainable mode is to comprise:
C4, when ways of distribution is the Dynamic Acquisition mode, the second content distributing network receives the business request information that the first content distributing network forwards, the address of the first content distributing network that need to contact for business request information is preserved in this locality of second content distributing network, carries the sign of CP under the content of the sign of content of user equipment requests or user equipment requests in business request information.
C5, second content distributing network send metadata request message according to the sign of CP under the content of the sign of the content of user equipment requests or user equipment requests to the first content distributing network.
C6, second content distributing network receive the second metadata of first content distributing network transmission.
for step C4, because the first content distributing network is CDN direct and that CP is signing, after subscriber equipment is clicked the connection of certain content on the website, at first corresponding business request information is routed in the first content distributing network of directly contracting with CP, the first content distributing network finds that according to the information in business request information such as IP address check subscriber equipment is currently located at the first content distributing network not yet covered with networks zone of arriving, the first content distributing network further checks the zone that the CDN of intercommunication covers, the network coverage that check to find the second content distributing network should the zone, can provide service for subscriber equipment by the second content distributing network, therefore user's business request information finally is routed to the second content distributing network.Carry the sign of CP under the content of the sign of content of UE request or UE request in business request information.
for step C5, the second content distributing network sends metadata request message according to the sign of CP under the content of the sign of the content of user equipment requests or user equipment requests to the first content distributing network, carry the sign of the metadata that needs request in metadata request message, it can be concrete meta data file sign, as sina.www.cdn.com/metadata/sina.xml, it can be also content identification, what expression was asked is the metadata of this relevance, as www.cp1.com/video/avantar.rm, it can also be the CP domain name, what expression was asked is all metadata of this CP, as www.cp1.com, the first content distributing network.
For step C6, after the first content distributing network receives metadata request message, through the identity of second content distributing network is verified, return to the metadata of request.For example, the first content distributing network transmits the second metadata according to the HTTP mode to the second content distributing network, or the first content distributing network transmits the second metadata according to the ftp file downloading mode to the second content distributing network.
Need to prove, in actual applications, the second content distributing network receives the first content distributing network according to the second metadata of the ways of distribution transmission of the ways of distribution parameter indication of the second metadata, and another kind of attainable mode is to comprise:
C7, when ways of distribution when mixing ways of distribution, for the memory address of the second metadata, the second content distributing network obtains from the first content distributing network according to the pre-ways of distribution of static state.
C8, for the residue metadata beyond the memory address of the second metadata, the second content distributing network obtains from the first content distributing network according to the Dynamic Acquisition mode.
For step C7, specifically can comprise the steps:
C9, when ways of distribution is static pre-ways of distribution, the distribution parameters of the second metadata also comprises the distribution depth parameter, the second content distributing network receives the notification message that the first content distributing network sends, notification message comprises the memory address of the second metadata.
C10, second content distributing network send metadata request message according to memory address to the first content distributing network.
C11, second content distributing network receive the memory address of first content distributing network transmission.
For step C8, specifically can comprise the steps:
C12, when ways of distribution is the Dynamic Acquisition mode, the second content distributing network receives the business request information that the first content distributing network forwards, and carries the sign of CP under the content of the sign of content of user equipment requests or user equipment requests in business request information.
C13, second content distributing network send metadata request message according to the sign of CP under the content of the sign of the content of user equipment requests or user equipment requests to the first content distributing network.
C14, second content distributing network receive the residue metadata of first content distributing network transmission.
, after obtaining the second metadata, the first content distributing network can also comprise the steps: at step 201 second content distributing network
When distribution parameters also comprises the time-out time parameter, if according to the overtime inefficacy of time-out time parameter the second metadata, the second content distributing network sends metadata request message to the first content distributing network, and the second content distributing network receives the second metadata of the renewal of first content distributing network transmission.
Wherein, it is that the second metadata arranges a concrete time-out time point that the time-out time parameter refers to, for example the time-out time point is set to 02:00:00 on November 04th, 2011, after if the second content distributing network receives the second metadata, check the time attribute of the second metadata, if surpass this time-out time point, show that these the second metadata all the elements lost efficacy, the second content distributing network is because the overtime inefficacy of the second metadata sends metadata request message to obtain the second metadata of renewal to the first content distributing network.
, after obtaining the second metadata, the first content distributing network can also comprise the steps: at step 201 second content distributing network
When distribution parameters comprises that also the validity time interval parameter is verified in timing, the second content distributing network is according to verifying that regularly the validity time interval parameter regularly sends the checking request message to the first content distributing network, if the second metadata lost efficacy, the second content distributing network receives the second metadata of the renewal of first content distributing network transmission.
Wherein, regularly verify the validity time interval parameter refer to set a time interval need the second content distributing network regularly verify the validity of the second metadata to the first content distributing network, for example can set interval is 24 hours, the validity of the second metadata can be verified to the first content distributing network every 24 hours second content distributing networks, the second metadata of renewal can be got to guarantee the second content distributing network.
Need to prove, in embodiments of the present invention, second content distributing network reception first content distributing network is specifically as follows according to the second metadata of the ways of distribution transmission of the ways of distribution parameter indication of the second metadata: the second content distributing network obtains the second metadata in the mode of file transfer from the first content distributing network, and wherein the second meta-data preservation hereof; Or the second content distributing network obtains the second metadata in the mode of signalling from the first content distributing network, and wherein the second meta-data preservation is in message body.
For example, the first content distributing network can be with the second metadata store hereof, be transferred to the second content distributing network by this document, the first content distributing network also can with the second meta-data preservation in message body such as XML, transmit to the second content distributing network by the message signaling.
202, the second content distributing network is controlled the content that sends to subscriber equipment according to the second metadata.
In embodiments of the present invention, the second content distributing network is after the first content distributing network obtains the second metadata, and the second content distributing network is controlled the content that sends to subscriber equipment according to this second metadata.
In actual applications, need to prove, the first metadata specifically can comprise: the data that CP describes content or the data that content delivery is controlled.The data that content delivery is controlled specifically can comprise: limiting content only allows to be used in preset regions and/or limiting content only allows to be used in preset time; For example, CP does not allow the user except Beijing Area to use this content, and CP does not allow to use this content etc. in every day after the 22:00 point.The second content distributing network is controlled specifically and can be comprised the content that sends to subscriber equipment according to the second metadata:
What the second content distributing network checked whether the subscriber equipment present position be in the CP appointment does not allow the zone of distributing, if, the service request of refusing user's equipment.And/or whether the time attribute of the content in second content distributing network inspection the second metadata was in the time of CP appointment, if not, the service request of refusing user's equipment.
Need to prove, the second content distributing network is controlled the content that sends to subscriber equipment according to the second metadata, also comprises the steps:
When the second metadata also comprises the subscription authentication parameter, the second content distributing network sends subscriber identity information to CP, the second content distributing network receives the authentication result of CP feedback, only has after the authentication result is passed through, and could pay content to subscriber equipment.
Wherein, the subscription authentication parameter refers to the user identity of the subscriber equipment that needs the checking initiating business request, if include this subscription authentication parameter in the second metadata, the second content distributing network can send subscriber identity information to CP after receiving metadata, after CP receiving belt subscriber identity information, the subscriber identity information of CP verifying user equipment, CP is to second content distributing network feedback authentication result.
Need to prove, the second content distributing network is controlled the content that sends to subscriber equipment according to the second metadata, can also comprise the steps:
When distribution parameters also comprised the time-out time parameter, the second content distributing network judged the whether overtime inefficacy of the second metadata according to the time-out time parameter in the second metadata, if, the service request of refusing user's equipment.
In embodiments of the present invention, the second content distributing network obtains the second metadata from the first content distributing network, wherein, the second metadata comprises the distribution parameters of the first metadata, the second metadata, the second content distributing network is controlled the content that sends to subscriber equipment according to the second metadata, has realized the processing to metadata under CDN intercommunication scene.
Above embodiment has introduced the processing method to metadata that the embodiment of the present invention is realized by first content distributing network and second content distributing network respectively, next introduces the first content distributing network that the embodiment of the present invention provides.See also shown in Figure 3ly, a kind of CDN300, this CDN300 are the first content distributing network, and this first content distributing network is the content distributing network signing with CP, is connected with CP, second content distributing network respectively, and first content distributing network 300 comprises:
Acquiring unit 301 is used for obtaining the first metadata that CP sends.
Generation unit 302, be used for generating the second metadata based on the strategy of the first metadata and first content distributing network 300, described the second metadata comprises the distribution parameters of described the first metadata and the second metadata, the distribution parameters of described the second metadata comprises the ways of distribution parameter, and described ways of distribution parameter is used to indicate the ways of distribution of described the second metadata.
Dispatching Unit 303 is used for distributing the second metadata according to the ways of distribution of ways of distribution parameter indication to the second content distributing network.
Need to prove, for acquiring unit 301, generation unit 302 and Dispatching Unit 303, a kind of attainable mode is, strategy comprises: the injection mode that needs use the central store ability of second content distributing network and buffer memory acceleration capacity, content as static state inject in advance, first content distributing network and the intercommunication of second content distributing network former be because the flow unloading, generation unit 302 comprises:
The first determination module is used for according to strategy, and ways of distribution is defined as static pre-ways of distribution.
The first generation module, be used for generating the second metadata according to the first metadata and static pre-ways of distribution, the ways of distribution of described ways of distribution parameter indication is static pre-ways of distribution, distribution parameters in the distribution parameters of described the second metadata also comprises the distribution depth parameter, and the distribution depth parameter is the second metadata allows distribution in the CDN intercommunicating system the degree of depth.
Dispatching Unit 303 comprises:
The first sending module is used for sending a notification message to the second content distributing network, and notification message comprises the memory address of the second metadata, so that described second content distributing network is to the memory address transmission metadata request message of described the second metadata.
The first receiver module is used for receiving the metadata request message that the second content distributing network sends.
The first sending module also is used for according to described metadata request message to second content distributing network transmission the second metadata.
In addition, acquiring unit 301 also is used for receiving the business request information that UE sends by CP.
Content distributing network 300 also comprises: transmitting element, be used for to second content distributing network forwarding service request message, and so that carrying out content delivery according to the second metadata to subscriber equipment, the second content distributing network controls.
Need to prove, for acquiring unit 301, generation unit 302 and Dispatching Unit 303, another kind of attainable mode is that strategy comprises: former in expanded areas of coverage as Dynamic Acquisition mode, first content distributing network and the intercommunication of second content distributing network of the injection mode of buffer memory acceleration capacity, content that needs use the second content distributing network.
Generation unit 302 comprises:
The second determination module is used for according to strategy, and ways of distribution is defined as the Dynamic Acquisition mode.
The second generation module is used for generating the second metadata according to the first metadata and Dynamic Acquisition mode, and the second ways of distribution parameter is designated as the Dynamic Acquisition mode.
Dispatching Unit 303 comprises:
The second receiver module is used for receiving the business request information that subscriber equipment sends by CP.
The second sending module is used for business request information is sent to the second content distributing network, carries the sign of CP under the content of the sign of content of user equipment requests or user equipment requests in business request information.
The second receiver module also be used for to receive the metadata request message that the second content distributing network sends according to the sign of CP under the content of the sign of the content of user equipment requests or user equipment requests.
The second sending module also is used for according to metadata request message to second content distributing network transmission the second metadata.
Need to prove, for generation unit 302, another kind of attainable mode is that strategy comprises in order to make directly pays the second content distributing network of content directly from first content distributing network acquisition request the second metadata to subscriber equipment.
Generation unit 302 comprises:
The 3rd determination module is used for according to strategy, and ways of distribution is defined as mixing ways of distribution.
The 3rd generates module, be used for according to the first metadata and mix ways of distribution generating the second metadata, the ways of distribution of ways of distribution parameter indication is for mixing ways of distribution, mixes ways of distribution for sending to the second content distributing network, send to the second content distributing network for the residue metadata beyond the memory address of the second metadata by the Dynamic Acquisition mode for the memory address of the second metadata ways of distribution by the pre-ways of distribution of static state.
Dispatching Unit 303 comprises:
The 3rd sending module, be used for to adopt static pre-ways of distribution to send the memory address of described the second metadata to described second content distributing network, and adopt the Dynamic Acquisition mode to send residue metadata outside the memory address of described the second metadata to described second content distributing network.
Need to prove, for acquiring unit 301 and Dispatching Unit 303, another kind of attainable mode is, when distribution parameters also comprises the time-out time parameter, acquiring unit 301 also is used for receiving the metadata request message that the second content distributing network sends according to overtime inefficacy of time-out time parameter judgement due to the second metadata; Dispatching Unit 303 also is used for sending to the second content distributing network the second metadata of upgrading.
Need to prove, for acquiring unit 301 and Dispatching Unit 303, another kind of attainable mode is, when distribution parameters comprises that also the validity time interval parameter is verified in timing, acquiring unit 301 is also for the checking request message that receives the timed sending of second content distributing network; Dispatching Unit 303 if it is effective also to be used for the second metadata, sends to the second content distributing network and is proved to be successful message, if the second metadata lost efficacy, sends the second metadata of upgrading to the second content distributing network.
Need to prove, for Dispatching Unit 303, another kind of attainable mode is, Dispatching Unit 303 is concrete to be used for the second meta-data preservation hereof, in the mode of file transfer to second content distributing network Transmit message; Or Dispatching Unit 303 is concrete to be used for the second meta-data preservation message body, sends message in the mode of message signalling to the second content distributing network.
Need to prove, the contents such as the information interaction between each module/unit of said apparatus, implementation, due to the inventive method embodiment based on same design, its technique effect that brings is identical with the inventive method embodiment, particular content can referring to the narration in the present invention's embodiment of the method as shown in Figure 1, repeat no more herein.
In embodiments of the present invention, the first content distributing network generates the second metadata based on the strategy of the first metadata and first content distributing network, wherein, the second metadata comprises the distribution parameters of the first metadata and the second metadata, the first content distributing network is distributed the second metadata according to the ways of distribution of ways of distribution parameter indication to the second content distributing network, so that the second content distributing network is controlled the content that sends to subscriber equipment according to the second metadata that receives.
Above embodiment has introduced the first content distributing network that the embodiment of the present invention provides, and next introduces the second content distributing network that the embodiment of the present invention provides, and sees also shown in Figure 4ly, and second content distributing network 400 comprises:
Acquiring unit 401, be used for receiving the first content distributing network according to the second metadata of the ways of distribution transmission of the ways of distribution parameter indication of the second metadata, described the second metadata comprises the distribution parameters of the first metadata and described the second metadata, the distribution parameters of described the second metadata comprises the ways of distribution parameter, described ways of distribution parameter is used to indicate the ways of distribution of described the second metadata, and described the first metadata sends to described first content distributing network by the CP of content supplier.
Content-control unit 402 is used for according to the second metadata, the content that sends to subscriber equipment being controlled.
Need to prove, for second content distributing network 400 and acquiring unit 401, a kind of attainable mode is, when ways of distribution is static pre-ways of distribution, the distribution parameters of the second metadata also comprises the distribution depth parameter, the distribution depth parameter is the second metadata allows distribution in the CDN intercommunicating system the degree of depth, and acquiring unit 401 comprises:
The first receiver module is used for receiving the notification message that the first content distributing network sends, and notification message comprises the memory address of the second metadata.
The first sending module is used for sending metadata request message according to memory address to the first content distributing network.
The first receiver module also is used for receiving the second metadata that the first content distributing network transmits.
Second content distributing network 400 also comprises (not shown in Figure 4):
Dispatching Unit is used for described distribution depth parameter is subtracted 1, and whether judgement distribution depth parameter is zero; When the distribution depth parameter is non-vanishing, with second content distributing network distribution second metadata of the second metadata to next stage, make the second content distributing network of next stage control the content that sends to subscriber equipment according to the second metadata.
Need to prove, for acquiring unit 401, another kind of attainable mode is that when ways of distribution was the Dynamic Acquisition mode, acquiring unit 401 comprised:
The second receiver module, be used for receiving the business request information that the first content distributing network forwards, described business request information is sent to described first content distributing network by subscriber equipment, carries the sign of CP under the content of the sign of content of described user equipment requests or described user equipment requests in described business request information.
The second sending module is used for sending metadata request message according to the sign of CP under the content of the sign of the content of user equipment requests or user equipment requests to the first content distributing network;
The second receiver module also is used for receiving the second metadata that the first content distributing network transmits.
Need to prove, for acquiring unit 401, another kind of attainable mode is, when ways of distribution is that when mixing ways of distribution, acquiring unit 401 comprises:
The first acquisition module is used for the memory address for the second metadata, obtains from the first content distributing network according to the pre-ways of distribution of static state.
The second acquisition module is used for the residue metadata except memory address for the second metadata, obtains from the first content distributing network according to the Dynamic Acquisition mode.
Need to prove, for second content distributing network 400, another kind of attainable mode is that when the second metadata also comprised the time-out time parameter, second content distributing network 400 also comprised:
The first transmitting element if be used for according to the overtime inefficacy of described time-out time parameter the second metadata, sends metadata request message to the first content distributing network.
The first receiving element is for the second metadata of the renewal that receives the transmission of first content distributing network.
Need to prove, for second content distributing network 400, another kind of attainable mode is that when the second metadata comprised that also the validity time interval parameter is verified in timing, second content distributing network 400 also comprised:
The second transmitting element is used for according to verifying that regularly the validity time interval parameter regularly sends the checking request message to the first content distributing network.
The second receiving element was used for when the second metadata had lost efficacy, and received the second metadata of the renewal of first content distributing network transmission.
Need to prove, for content-control unit 402, another kind of attainable mode is, when the second metadata also comprised the subscription authentication parameter, content-control unit 402 also comprised:
The 3rd sending module is used for sending subscriber identity information to the source server of CP;
The 3rd receiver module is for the authentication result of the source server feedback that receives CP.
Need to prove, for content-control unit 402, another kind of attainable mode is, the first metadata comprises: the data that CP describes content or the data that content delivery is controlled, the data that content delivery is controlled comprise: limiting content only allows to be used in preset regions and/or limiting content only allows to be used in preset time.
Content-control unit 402 is concrete is used for checking whether the subscriber equipment present position be in the CP appointment does not allow the zone of distributing, if, the service request of refusing user's equipment.And/or content-control unit 402 is concrete is used for checking whether the time attribute of the contents of the second metadata were in the time of CP appointment, if not, the service request of refusing user's equipment.
Need to prove, for content-control unit 402, another kind of attainable mode is, when distribution parameters also comprises the time-out time parameter, content-control unit 402 is concrete is used for the whether overtime inefficacy of time attribute that time-out time parameter according to described the second metadata judges the content of the second metadata, if, the service request of refusing user's equipment.
Need to prove, the contents such as the information interaction between each module/unit of said apparatus, implementation, due to the inventive method embodiment based on same design, its technique effect that brings is identical with the inventive method embodiment, particular content can referring to the narration in the present invention's embodiment of the method as shown in Figure 2, repeat no more herein.
In embodiments of the present invention, the second content distributing network obtains the second metadata from the first content distributing network, wherein, the second metadata comprises the distribution parameters of the first metadata and the second metadata, the second content distributing network is controlled the content that sends to subscriber equipment according to the second metadata, has realized the processing to metadata under CDN intercommunication scene.
Above embodiment has introduced the embodiment of the present invention first content distributing network and second content distributing network respectively, next introduces the CDN intercommunicating system that the embodiment of the present invention provides.See also shown in Figure 5ly, a kind of CDN intercommunicating system 500 comprises: CP501, first content distributing network 502, and second content distributing network 503, UE504, wherein,
CP501 is used for providing the first metadata to first content distributing network 502 first content distributing networks.
First content distributing network 502 can for first content distributing network as shown in Figure 3, repeat no more herein.
Second content distributing network 503 can for second content distributing network as shown in Figure 4, repeat no more herein.
UE504 is used for sending service requesting information to the first content distributing network.
Need to prove, in actual applications, if only there is a second content distributing network in CDN intercommunicating system 500, can be as the second content distributing network 503 in Fig. 5, if there are a plurality of second content distributing networks in CDN intercommunicating system 500, the second content distributing network 503 in Fig. 5 this moment specifically can comprise, as the first order second content distributing network 5031 in Fig. 6, intergrade second content distributing network 5032, afterbody second content distributing network 5033.Need to prove, if there are two second content distributing networks in CDN intercommunicating system 500, do not exist intergrade second content distributing network 5032, second content distributing network 503 to include only first order second content distributing network 5031, afterbody second content distributing network 5033 this moment.If there are three second content distributing networks in CDN intercommunicating system 500, second content distributing network 503 comprises first order second content distributing network 5031, intergrade second content distributing network 5032, afterbody second content distributing network 5033.If there is the second content distributing network more than three in CDN intercommunicating system 500, second content distributing network 503 includes only first order second content distributing network 5031, intergrade second content distributing network 5032, afterbody second content distributing network 5033, but intergrade second content distributing network 5032 refers to all second content distributing networks except first order second content distributing network 5031 and afterbody second content distributing network 5033 in second content distributing network 503.
Next the first order second content distributing network 5031 that second content distributing network 503 is comprised, intergrade second content distributing network 5032, afterbody second content distributing network 5033 are elaborated.
A kind of implementation is, when ways of distribution is static pre-ways of distribution,
First order second content distributing network 5031 is used for obtaining the second metadata from the first content distributing network, and sends to intergrade second content distributing network.
Intergrade second content distributing network 5032 is used for receiving the second metadata from first order second content distributing network, and forwards to afterbody second content distributing network.
Afterbody second content distributing network 5033 is used for receiving the second metadata; According to the second metadata, the content that sends to subscriber equipment is controlled.
Another kind of implementation is, when ways of distribution is the Dynamic Acquisition mode,
Afterbody second content distributing network 5033 is used for to intergrade second content distributing network 5032 request the second metadata.
Intergrade second content distributing network 5032 is used for to first order second content distributing network 5031 request the second metadata.
First order second content distributing network 5031 is used for obtaining the second metadata from the first content distributing network, and sends to afterbody second content distributing network 5033.
Afterbody second content distributing network 5033 is used for receiving the second metadata from first order second content distributing network 5031; According to the second metadata, the content that sends to subscriber equipment is controlled.
Another kind of implementation is, when ways of distribution when mixing ways of distribution,
First order second content distributing network 5031 is used for obtaining the memory address of the second metadata from the first content distributing network, and sends to intergrade second content distributing network 5032.
Intergrade second content distributing network 5032 is used for receiving from the first order second content distributing network memory address of the second metadata, and forwards 5033 to afterbody second content distributing network.
Afterbody second content distributing network 5033 is for the memory address that receives the second metadata.
Afterbody second content distributing network 5033 is used for directly asking the residue metadata except memory address of the second metadata to first order second content distributing network 5031 according to described memory address.
Afterbody second content distributing network 5033 is for obtain the residue metadata except memory address of the second metadata from described first content distributing network; According to the second metadata, the content that sends to subscriber equipment is controlled.
Need to prove, decide which in the second metadata partly to send by static pre-ways of distribution by concrete scene in actual applications, which part part sends by the Dynamic Acquisition mode, is not construed as limiting herein.But, at least comprise the memory address of residue metadata in the first content distributing network in the part metadata that issues by the pre-ways of distribution of static state, afterbody second content distributing network can be according to the memory address of described residue metadata in the first content distributing network directly to first content distributing network acquisition request residue metadata.
in embodiments of the present invention, the first content distributing network generates the second metadata based on the strategy of the first metadata and first content distributing network, the second content distributing network obtains the second metadata from the first content distributing network, wherein, the second metadata comprises the distribution parameters of the first metadata and the second metadata, distribution parameters comprises the ways of distribution parameter, the first content distributing network is distributed the second metadata according to the ways of distribution of ways of distribution parameter indication to the second content distributing network, the second content distributing network is controlled the content that sends to subscriber equipment according to the second metadata that receives, realized the processing to metadata under CDN intercommunication scene.
One of ordinary skill in the art will appreciate that all or part of step that realizes in above-described embodiment method is to come the relevant hardware of instruction to complete by program, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium of mentioning can be read-only memory, disk or CD etc.
Above processing method and device and CDN intercommunicating system to a kind of metadata provided by the present invention is described in detail, for one of ordinary skill in the art, thought according to the embodiment of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.

Claims (35)

1. the processing method of a metadata, is characterized in that, comprising:
First content distributing network CDN obtains the first metadata that the CP of content supplier sends;
Described first content distributing network generates the second metadata based on the strategy of described the first metadata and described first content distributing network, described the second metadata comprises the distribution parameters of described the first metadata and the second metadata, the distribution parameters of described the second metadata comprises the ways of distribution parameter, and described ways of distribution parameter is used to indicate the ways of distribution of described the second metadata;
Described first content distributing network is distributed described the second metadata according to the ways of distribution of described ways of distribution parameter indication to the second content distributing network.
2. the processing method of metadata according to claim 1, is characterized in that,
Described first content distributing network comprises based on strategy generation second metadata of described the first metadata and described first content distributing network:
Described first content distributing network is defined as static pre-ways of distribution according to described strategy with ways of distribution;
Described first content distributing network generates the second metadata according to described the first metadata and the pre-ways of distribution of described static state, wherein, ways of distribution parameter in the distribution parameters of described the second metadata is designated as static pre-ways of distribution, the distribution parameters of described the second metadata also comprises the distribution depth parameter, and described distribution depth parameter is described the second metadata allows distribution in the content distributing network intercommunicating system the degree of depth;
Described first content distributing network comprises to described the second metadata of second content distributing network distribution according to the ways of distribution of described ways of distribution parameter indication:
Described first content distributing network adopts static pre-ways of distribution to described the second metadata of described second content distributing network distribution.
3. the processing method of metadata according to claim 2, is characterized in that, described first content distributing network adopts static pre-ways of distribution to comprise to described the second metadata of described second content distributing network distribution:
Described first content distributing network sends a notification message to described second content distributing network, described notification message comprises the memory address of described the second metadata, so that described second content distributing network is to the memory address transmission metadata request message of described the second metadata;
Described first content distributing network receives the metadata request message that described second content distributing network sends;
Described first content distributing network transmits described the second metadata according to described metadata request message to described second content distributing network.
4. the processing method of metadata according to claim 3, is characterized in that, described first content distributing network, also comprises after described the second metadata of described second content distributing network transmission according to described metadata request message:
Described first content distributing network receives the business request information that subscriber equipment sends;
Described first content distributing network forwards described business request information to described second content distributing network, controls so that described second content distributing network carries out content delivery according to described the second metadata to described subscriber equipment.
5. the processing method of metadata according to claim 1, is characterized in that,
Described first content distributing network comprises based on strategy generation second metadata of described the first metadata and described first content distributing network:
Described first content distributing network is defined as the Dynamic Acquisition mode according to described strategy with ways of distribution;
Described first content distributing network generates the second metadata according to described the first metadata and described Dynamic Acquisition mode, and wherein, the ways of distribution parameter in the distribution parameters of described the second metadata is designated as the Dynamic Acquisition mode;
Described first content distributing network comprises to described the second metadata of second content distributing network distribution according to the ways of distribution of described ways of distribution parameter indication:
Described first content distributing network adopts the Dynamic Acquisition mode to described the second metadata of described second content distributing network distribution.
6. the processing method of metadata according to claim 5, is characterized in that, described first content distributing network adopts the Dynamic Acquisition mode to comprise to described the second metadata of described second content distributing network distribution:
Described first content distributing network receives the business request information that subscriber equipment sends;
Described first content distributing network sends to described second content distributing network with described business request information, carries the sign of CP under the content of the sign of content of described user equipment requests or described user equipment requests in described business request information;
Described first content distributing network receives the metadata request message that described second content distributing network sends, and to be described second content distributing network generate according to the sign of CP under the content of the sign of the content of described user equipment requests or described user equipment requests described metadata request message;
Described first content distributing network transmits described the second metadata according to described metadata request message to described second content distributing network.
7. the processing method of metadata according to claim 1, is characterized in that,
Described first content distributing network comprises based on strategy generation second metadata of described the first metadata and described first content distributing network:
Described first content distributing network is defined as mixing ways of distribution according to described strategy with ways of distribution;
Described first content distributing network generates the second metadata according to described the first metadata and described mixing ways of distribution, and wherein, the ways of distribution parameter in the distribution parameters of described the second metadata is designated as the mixing ways of distribution;
Described first content distributing network comprises to described the second metadata of second content distributing network distribution according to the ways of distribution of described ways of distribution parameter indication:
Described first content distributing network adopts static pre-ways of distribution to send the memory address of described the second metadata to described second content distributing network, adopts the Dynamic Acquisition mode to send residue metadata outside the memory address of described the second metadata to described second content distributing network.
8. the processing method of the described metadata of any one according to claim 1 to 7, is characterized in that, described the first metadata comprises: the data that described CP describes content or the data that content delivery is controlled.
9. the processing method of metadata according to claim 8, is characterized in that, the distribution parameters of described the second metadata also comprises: the time-out time parameter;
Described first content distributing network, also comprises after described the second metadata of second content distributing network distribution according to the ways of distribution of described ways of distribution parameter indication:
Described first content distributing network receives the described second content distributing network metadata request message that overtime inefficacy sends according to described the second metadata of described time-out time parameter judgement;
Described first content distributing network sends the second metadata of upgrading to described second content distributing network.
10. the processing method of metadata according to claim 8, is characterized in that, the distribution parameters of described the second metadata also comprises: regularly verify the validity time interval parameter;
Described first content distributing network, also comprises after described the second metadata of second content distributing network distribution according to the ways of distribution of described ways of distribution parameter indication:
Described first content distributing network receives described second content distributing network according to the checking request message of described timing checking validity time interval parameter timed sending;
If described the second metadata is effective, described first content distributing network sends to described second content distributing network and is proved to be successful message, if described the second metadata lost efficacy, described first content distributing network sends the second metadata of upgrading to described second content distributing network.
11. the processing method of metadata according to claim 1 is characterized in that, described first content distributing network comprises to described the second metadata of second content distributing network distribution according to the ways of distribution of described ways of distribution parameter indication:
Described first content distributing network with described the second meta-data preservation hereof, described first content distributing network in the mode of file transfer to described the second metadata of described second content distributing network distribution;
Or,
Described first content distributing network is carried at described the second metadata in message body, and described first content distributing network is distributed described the second metadata in the mode of message signalling to described second content distributing network.
12. the processing method of a metadata is characterized in that, comprising:
The second content distributing network receives the first content distributing network according to the second metadata of the ways of distribution transmission of the ways of distribution parameter indication of the second metadata, described the second metadata comprises the distribution parameters of the first metadata and described the second metadata, the distribution parameters of described the second metadata comprises the ways of distribution parameter, described ways of distribution parameter is used to indicate the ways of distribution of described the second metadata, and described the first metadata sends to described first content distributing network by the CP of content supplier;
Described second content distributing network is controlled the content that sends to subscriber equipment according to described the second metadata.
13. the processing method of metadata according to claim 12 is characterized in that, described ways of distribution is static pre-ways of distribution, and the distribution parameters of described the second metadata also comprises the distribution depth parameter;
Described second content distributing network reception first content distributing network comprises according to the second metadata of the ways of distribution transmission of the ways of distribution parameter indication of the second metadata:
Described second content distributing network receives the notification message that described first content distributing network sends, and described notification message comprises the memory address of described the second metadata;
Described second content distributing network sends metadata request message according to described memory address to described first content distributing network;
Described second content distributing network receives the second metadata of described first content distributing network transmission.
14. the processing method of metadata according to claim 13 is characterized in that, described second content distributing network also comprises after receiving the second metadata of described first content distributing network transmission:
Described second content distributing network subtracts 1 with described distribution depth parameter, described second content distributing network judges whether described distribution depth parameter is zero, if described distribution depth parameter is non-vanishing, then to described second metadata of second content distributing network distribution of next stage, make the second content distributing network of next stage control the content that sends to subscriber equipment according to described the second metadata.
15. the processing method of metadata according to claim 12 is characterized in that, described ways of distribution is the Dynamic Acquisition mode;
Described second content distributing network reception first content distributing network comprises according to the second metadata of the ways of distribution transmission of the ways of distribution parameter indication of the second metadata:
Described second content distributing network receives the business request information that described first content distributing network forwards, described business request information is sent to described first content distributing network by subscriber equipment, carries the sign of CP under the content of the sign of content of described user equipment requests or described user equipment requests in described business request information;
Described second content distributing network sends metadata request message according to the sign of CP under the content of the sign of the content of described user equipment requests or described user equipment requests to described first content distributing network;
Described second content distributing network receives the second metadata of described first content distributing network transmission.
16. the processing method of metadata according to claim 12 is characterized in that, described ways of distribution is for mixing ways of distribution;
Described second content distributing network reception first content distributing network comprises according to the second metadata of the ways of distribution transmission of the ways of distribution parameter indication of the second metadata:
Described second content distributing network receives the memory address that described first content distributing network adopts described the second metadata that static pre-ways of distribution sends, and receives the residue metadata outside the memory address that described first content distributing network adopts described the second metadata that the Dynamic Acquisition mode sends.
17. the processing method according to claim 12 to the described metadata of any one in 16 is characterized in that the distribution parameters of described the second metadata also comprises: the time-out time parameter;
Described second content distributing network also comprises after the first content distributing network obtains the second metadata:
If determine the overtime inefficacy of described the second metadata according to described time-out time parameter, described second content distributing network sends metadata request message to described first content distributing network, and described second content distributing network receives the second metadata of the renewal of described first content distributing network transmission; Perhaps,
Described second content distributing network judges the whether overtime inefficacy of described the second metadata according to described time-out time parameter, if, the service request of the described subscriber equipment of refusal.
18. the processing method according to claim 12 to the described metadata of any one in 16 is characterized in that, the distribution parameters of described the second metadata also comprises: regularly verify the validity time interval parameter;
Described second content distributing network also comprises after receiving second metadata of first content distributing network according to the ways of distribution transmission of the ways of distribution parameter indication of the second metadata:
Described second content distributing network regularly sends the checking request message to described first content distributing network according to described timing checking validity time interval parameter;
When described the second metadata had lost efficacy, described second content distributing network received the second metadata of the renewal of described first content distributing network transmission.
19. the processing method according to claim 12 to the described metadata of any one in 16 is characterized in that the distribution parameters of described the second metadata also comprises: the subscription authentication parameter;
Described second content distributing network is controlled also the content that sends to subscriber equipment according to described the second metadata and is comprised:
Described second content distributing network sends subscriber identity information to described CP;
Described second content distributing network receives the authentication result of described CP feedback.
20. the processing method according to claim 12 to the described metadata of any one in 16, it is characterized in that, described the first metadata comprises: the data that described CP describes content or the data that content delivery is controlled, and the described data that content delivery is controlled comprise: limiting content only allows to be used in preset regions and/or limiting content only allows to be used in preset time;
Described second content distributing network is controlled the content that sends to subscriber equipment according to described the second metadata and is comprised:
What described second content distributing network checked whether the subscriber equipment present position be in described CP appointment does not allow the zone of distributing, if, the service request of the described subscriber equipment of refusal; And/or,
Described second content distributing network checks whether the time attribute of the content in described the second metadata was in the time of described CP appointment, if not, the service request of the described subscriber equipment of refusal.
21. a content distributing network CDN is characterized in that, described CDN is the content distributing network signing with the CP of content supplier, and described CDN comprises:
Acquiring unit is used for obtaining the first metadata that described CP sends;
Generation unit, be used for generating the second metadata based on the strategy of described the first metadata and described first content distributing network, described the second metadata comprises the distribution parameters of described the first metadata and the second metadata, the distribution parameters of described the second metadata comprises the ways of distribution parameter, and described ways of distribution parameter is used to indicate the ways of distribution of described the second metadata;
Dispatching Unit is used for distributing described the second metadata according to the ways of distribution of described ways of distribution parameter indication to described second content distributing network.
22. content distributing network according to claim 21 is characterized in that, described generation unit comprises:
The first determination module is used for according to described strategy, and ways of distribution is defined as static pre-ways of distribution;
The first generation module, be used for according to described the first metadata and described static state in advance a minute mode become the second metadata, ways of distribution parameter in the distribution parameters of described the second metadata is designated as static pre-ways of distribution, the distribution parameters of described the second metadata also comprises the distribution depth parameter, and described distribution depth parameter is described the second metadata allows distribution in the content distributing network intercommunicating system the degree of depth.
23. content distributing network according to claim 22 is characterized in that, described distribution unit comprises:
The first sending module, be used for sending a notification message to described second content distributing network, described notification message comprises the memory address of described the second metadata, so that described second content distributing network is to the memory address transmission metadata request message of described the second metadata;
The first receiver module is used for receiving the metadata request message that described second content distributing network sends;
Described the first sending module also is used for according to described metadata request message to described the second metadata of described second content distributing network transmission.
24. content distributing network according to claim 23 is characterized in that,
Described acquiring unit also is used for receiving the business request information that subscriber equipment sends;
Described content distributing network also comprises: transmitting element, be used for forwarding described business request information to described second content distributing network, and so that carrying out content delivery according to described the second metadata to described subscriber equipment, described second content distributing network controls.
25. content distributing network according to claim 21 is characterized in that, described generation unit comprises:
The second determination module is used for according to described strategy, and ways of distribution is defined as the Dynamic Acquisition mode;
The second generation module is used for generating the second metadata according to described the first metadata and described Dynamic Acquisition mode, and the ways of distribution parameter of described the second metadata is designated as the Dynamic Acquisition mode.
26. content distributing network according to claim 25 is characterized in that, described Dispatching Unit comprises:
The second receiver module is used for receiving the business request information that subscriber equipment sends;
The second sending module is used for described business request information is sent to described second content distributing network, carries the sign of CP under the content of the sign of content of described user equipment requests or described user equipment requests in described business request information;
Described the second receiver module, also be used for receiving the metadata request message that described second content distributing network sends, to be described second content distributing network generate according to the sign of CP under the content of the sign of the content of described user equipment requests or described user equipment requests described metadata request message;
Described the second sending module also is used for according to described metadata request message to described the second metadata of described second content distributing network transmission.
27. content distributing network according to claim 21 is characterized in that,
Described generation unit comprises:
The 3rd determination module is used for according to described strategy, and ways of distribution is defined as mixing ways of distribution;
The 3rd generates module, is used for generating the second metadata according to described the first metadata and described mixing ways of distribution, and wherein, the ways of distribution parameter in the distribution parameters of described the second metadata is designated as the mixing ways of distribution.
28. content distributing network according to claim 27 is characterized in that, described Dispatching Unit comprises:
The 3rd sending module, be used for to adopt static pre-ways of distribution to send the memory address of described the second metadata to described second content distributing network, and adopt the Dynamic Acquisition mode to send residue metadata outside the memory address of described the second metadata to described second content distributing network.
29. a content distributing network CDN is characterized in that, described CDN comprises:
Acquiring unit, be used for receiving the first content distributing network according to the second metadata of the ways of distribution transmission of the ways of distribution parameter indication of the second metadata, described the second metadata comprises the distribution parameters of the first metadata and described the second metadata, the distribution parameters of described the second metadata comprises the ways of distribution parameter, described ways of distribution parameter is used to indicate the ways of distribution of described the second metadata, and described the first metadata sends to described first content distributing network by the CP of content supplier;
The content-control unit is used for according to described the second metadata, the content that sends to subscriber equipment being controlled.
30. content distributing network according to claim 29 is characterized in that, described ways of distribution is static pre-ways of distribution, and the distribution parameters of described the second metadata also comprises the distribution depth parameter;
Described acquiring unit comprises:
The first receiver module is used for receiving the notification message that described first content distributing network sends, and described notification message comprises the memory address of described the second metadata;
The first sending module is used for sending metadata request message according to described memory address to described first content distributing network;
Described the first receiver module also is used for receiving the second metadata that described first content distributing network transmits.
31. content distributing network according to claim 30 is characterized in that, described content distributing network also comprises:
Dispatching Unit is used for described distribution depth parameter is subtracted 1, judges whether described distribution depth parameter is zero; When described distribution depth parameter is non-vanishing, with second content distributing network distribution described second metadata of described the second metadata to next stage, make the second content distributing network of next stage control the content that sends to subscriber equipment according to described the second metadata.
32. content distributing network according to claim 29 is characterized in that, described ways of distribution is the Dynamic Acquisition mode;
Described acquiring unit comprises:
The second receiver module, be used for receiving the business request information that described first content distributing network forwards, described business request information is sent to described first content distributing network by subscriber equipment, carries the sign of CP under the content of the sign of content of described user equipment requests or described user equipment requests in described business request information;
The second sending module is used for sending metadata request message according to the sign of CP under the content of the sign of the content of described user equipment requests or described user equipment requests to described first content distributing network;
Described the second receiver module also is used for receiving the second metadata that described first content distributing network transmits.
33. content distributing network according to claim 29 is characterized in that, described ways of distribution is for mixing ways of distribution;
Described acquiring unit comprises:
The first acquisition module is used for the memory address for described the second metadata, obtains from described first content distributing network according to the pre-ways of distribution of static state;
The second acquisition module is used for the remainder metadata except memory address for described the second metadata, obtains from described first content distributing network according to the Dynamic Acquisition mode.
34. the described content distributing network of any one according to claim 29 to 33, it is characterized in that, described the first metadata comprises: the data that described CP describes content or the data that content delivery is controlled, and the described data that content delivery is controlled comprise: limiting content only allows to be used in preset regions and/or limiting content only allows to be used in preset time;
What described content-control unit be used for to check specifically whether the subscriber equipment present position be in described CP appointment does not allow the zone of distributing, if, the service request of the described subscriber equipment of refusal;
And/or,
Whether described content-control unit specifically is in the time of described CP appointment for the time attribute of the content that checks described the second metadata, if not, the service request of the described subscriber equipment of refusal.
35. content distributing network CDN intercommunicating system, it is characterized in that, comprise: the CP of content supplier, content distributing network as described in any one in claim 21 to 28, content distributing network as described in any one in claim 29 to 34, subscriber equipment, wherein
Described CP is used for providing the first metadata to content distributing network as described in claim 21 to 28 any one;
Described subscriber equipment is used for sending service requesting information to content distributing network as described in claim 29 to 34 any one.
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