CN105530226A - Content distribution network system, and access control method and system thereof - Google Patents
Content distribution network system, and access control method and system thereof Download PDFInfo
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Abstract
An embodiment of the invention discloses a content distribution network system, and an access control method and an access control system of the content distribution network system. The access control method comprises the steps that: a CDN adapter receives a CDN service order message sent by a service server of a CDN client, wherein the CDN service order message comprises a first Service User ID and a client ID; a corresponding relation table item of the client ID and the first Service User ID is stored in a user order list; the service server receives a CDN service request message sent by a user requesting use of the CDN service and forwards the CDN service request message to the CDN adapter, and the CDN service request message comprises a second Service user ID, an IP address and a port number; the CDN adapter queries whether the second Service user ID exists in the user order list and sends a user permission request message to a CDN controller if the second Service user ID exists in the user order list, and the user permission request message comprises the second Service user ID, the IP address and the port number; and the CDN controller permits a user terminal using the IP address to access CDN resources controlled by the CDN controller. According to the content distribution network system, the access control method and the access control system thereof, access control of user access can be achieved in the CDN system.
Description
Technical field
The present invention relates to the communication technology, especially a kind of content distribution network system and connection control method thereof and system.
Background technology
The flow of certain service quality that content distributing network (CDN) operator provides to client mainly through CDN system is also collected the charges to client, and therefore, its starting point is technically all to allow the maximize throughput of client, and cost is lower to set out.Current CDN system considers that more is the index such as scheduling controlling, distribution efficiency, file fragmentation, encoding and decoding control, statistical analysis technically, and all lacks the mechanism for user access control in nearly all CDN system.
If need the work of adding users access control in an operation flow, this part work is all that the client-server provider (SP) of having given CDN controls voluntarily, and CDN is the passive selection accepting client.According in the business scenario of charge on traffic, on the access control mechanism of SP to user, different SP, different content have bigger difference.Such as, extremely excellent, any user of most free content that the SP such as potato provide can access, substantially access control is not carried out to user, but for some honored guests (VIP) content or other charged content, SP just needs to know that user identity carries out Differentiated services, in this case, SP mainly by after user log-in authentication, carries out content-encrypt access in conjunction with user authentication information.
Realizing in process of the present invention, inventor finds, in the collaboration scenario of current CDN and SP, does not have problem by SP according to charge on traffic, but, when CDN no longer adopts according to charge on traffic, but adopt other charging way more flexibly, such as, the mode cooperation that CDN and SP is divided into according to user's monthly payment, just need CDN system to carry out corresponding user access control, and current CDN system lacks the user access control mechanism of oneself, be just difficult to adapt to.
Summary of the invention
An embodiment of the present invention technical problem to be solved is: provide a kind of content distribution network system and connection control method thereof and system, to realize in CDN system controlling the access of user's access.
The connection control method of a kind of content distributing network that the embodiment of the present invention provides, comprising:
The CDN service order message that the service server that CDN adapter receives CDN client sends, this CDN service order message comprises the first user service identification ServiceUserID that CDN business is ordered in request;
CDN adapter stores the corresponding relation list item of a ServiceUserID in the Customer ID of described CDN client and described CDN service order message in user's Subscription List;
Described service server receives the CDN business request information that user asks to send when using CDN business, and is transmitted to CDN adapter, and this CDN business request information comprises the 2nd ServiceUserID, IP address and the port numbers that request uses CDN business;
Described 2nd ServiceUserID whether is there is in CDN adapter inquiring user Subscription List;
If there is described 2nd ServiceUserID, CDN adapter in user's Subscription List to send user's permission request message to CDN controller, this user's permission request message comprises described 2nd ServiceUserID, described IP address and described port numbers;
The CDN resource that CDN controller described in the user terminal access of IP address described in the permission to use of CDN controller controls.
Based in another embodiment of said method embodiment, described CDN service order message is initiated after receiving by service server the registration request that user sent by user terminal, described registration request orders CDN business for asking, and described registration request comprises a described ServiceUserID, orders IP address SubIP and order time SubTime; Described SubIP is the IP address that described user asks to use when ordering CDN business, and described SubTime is the time that described user asks when ordering CDN business;
Described CDN service order message also comprises CDN subscription status CDNsubscription parameter value, SubIP and SubTime;
Wherein, CDNsubscription parameter is for representing order or order cancellation CDN business, and the CDNsubscription parameter value in described CDN service order message orders CDN business for identifying;
The corresponding relation list item that described CDN adapter stores a ServiceUserID in the Customer ID of described CDN client and described CDN service order message in user's Subscription List comprises: described CDN adapter stores the corresponding relation list item of described Customer ID, a described ServiceUserID, described SubIP and described SubTime in user's Subscription List.
Based in another embodiment of said method embodiment, also comprise license permission parameter value in described user's permission request message, described permission parameter to increase or cancels in described user's permission request message IP address to the access rights of CDN business for representing; Permission parameter value in described user's permission request message to increase in described user's permission request message IP address to the access rights of CDN business for identifying.
Based in another embodiment of said method embodiment, the CDN resource that described in the user terminal access of IP address described in the permission to use of CDN controller, CDN controller controls comprises:
CDN controller adds described IP address in licence list, and returns user right to described CDN adapter and open response message;
CDN adapter sends CDN service response message to described service server;
Service server sends redirect message to using the user terminal of described IP address, is sent in the uniform resource position mark URL at CDN controller place by the CDN business request information that the user terminal of described for described use IP address sends;
Whether recording the IP address in described CDN business request information in CDN controller inquiry licence list, determining whether as using the user of described IP address to provide CDN business.
Based in another embodiment of said method embodiment, also comprise:
Arrange the Access Control List (ACL) of the CDN point-to-point PoP node controlled for described CDN controller, this Access Control List (ACL) comprises described licence list, and described licence list allows the IP address of control CDN resource described in the described CDN controller of access for recording.
Based in another embodiment of said method embodiment, described setting comprises for the Access Control List (ACL) of the CDNPoP node that described CDN controller controls:
CDNPoP node arranges Access Control List (ACL) by IP Table I Ptable mode; Or
For the special fire compartment wall of described CDNPoP Node configuration.
Based in another embodiment of said method embodiment, also comprise:
After service server receives the cancellation request that user sent by user terminal, CDN service unsubscription message is sent to CDN adapter, described cancellation request comprise request quit the subscription of CDN business Three S's erviceUserID, quit the subscription of IP address and quit the subscription of the time, the IP address that the described IP of quitting the subscription of address uses when being user terminal transmission cancellation request, the time when time of quitting the subscription of is user terminal transmission cancellation request; Described CDN service unsubscription message comprises CDNsubscription parameter value, Three S's erviceUserID, quits the subscription of IP address and quit the subscription of the time, and the CDNsubscription parameter value in described CDN service unsubscription message is used for mark and quits the subscription of CDN business;
The corresponding relation list item of described Three S's erviceUserID deleted by CDN adapter from user's Subscription List.
Based in another embodiment of said method embodiment, also comprise:
After CDN adapter sends user permission request message to CDN controller, in Message Record list, store the record list item comprising the 2nd ServiceUserID in described user's permission request message, described IP address and described port numbers.
Based in another embodiment of said method embodiment, CDN adapter also comprises delete the corresponding relation list item of described Three S's erviceUserID from user's Subscription List after:
Record list item corresponding to described Three S's erviceUserID inquired about by CDN adapter from Message Record list, and send to CDN controller and cancel permission request message, the Three S's erviceUserID that this cancellation permission request message comprises permission parameter value, record list item that described Three S's erviceUserID is corresponding comprises, IP address and port numbers; Permission parameter value in described cancellation permission request message to cancel in described cancellation permission request message IP address to the access rights of CDN business for identifying;
The IP address in described cancellation permission request message deleted by described CDN controller from licence list.
A kind of content distributing network access control system that the embodiment of the present invention provides, comprising:
CDN adapter, the CDN service order message that the service server for receiving CDN client sends, this CDN service order message comprises the ServiceUserID that CDN business is ordered in request; The corresponding relation list item of a ServiceUserID in the Customer ID of described CDN client and described CDN service order message is stored in user's Subscription List; And receiving the CDN business request information of described service server forwarding, this CDN business request information comprises the 2nd ServiceUserID, IP address and the port numbers that request uses CDN business; Described 2nd ServiceUserID whether is there is in inquiring user Subscription List; If there is described 2nd ServiceUserID in user's Subscription List, send user's permission request message to CDN controller, this user's permission request message comprises described 2nd ServiceUserID, described IP address and described port numbers;
Described CDN controller, for control CDN resource; And according to the permission to use of described user's permission request message IP address user terminal access described in CDN controller control CDN resource.
Based in another embodiment of said system embodiment, described CDN service order message is initiated after receiving by service server the registration request that user sent by user terminal, described registration request orders CDN business for asking, and described registration request comprises described ServiceUserID, SubIP and SubTime; Described SubIP is the IP address that described user asks to use when ordering CDN business, and described SubTime is the time that described user asks when ordering CDN business;
Described CDN service order message also comprises CDNsubscription parameter value, SubIP and SubTime;
Wherein, CDNsubscription parameter is for representing order or order cancellation CDN business, and the CDNsubscription parameter value in described CDN service order message orders CDN business for identifying;
Described CDN adapter, specifically for storing the corresponding relation list item of described Customer ID, a described ServiceUserID, described SubIP and described SubTime in user's Subscription List.
Based in another embodiment of said system embodiment, also comprise permission parameter value in described user's permission request message, described permission parameter increases or to cancel in described user's permission request message IP address to the access rights of CDN business for representing; Permission parameter value in described user's permission request message to increase in described user's permission request message IP address to the access rights of CDN business for identifying.
Based in another embodiment of said system embodiment, described CDN controller, specifically for adding described IP address in licence list, and returns user right to described CDN adapter and opens response message; And when receiving CDN business request information, whether recording the IP address in described CDN business request information in inquiry licence list, determining whether as using the user of described IP address to provide CDN business;
Described CDN adapter, also for sending CDN service response message to described service server, so that service server sends redirect message to using the user terminal of described IP address, the CDN business request information that the user terminal of described for described use IP address sends is sent on the URL at CDN controller place.
Based in another embodiment of said system embodiment, described CDN adapter is also for receiving the CDN service unsubscription message that service server sends based on the cancellation request that user terminal sends, described cancellation request comprise request quit the subscription of CDN business Three S's erviceUserID, quit the subscription of IP address and quit the subscription of the time, the IP address that the described IP of quitting the subscription of address uses when being user terminal transmission cancellation request, the time when time of quitting the subscription of is user terminal transmission cancellation request; Described CDN service unsubscription message comprises CDNsubscription parameter value, Three S's erviceUserID, quits the subscription of IP address and quit the subscription of the time, and the CDNsubscription parameter value in described CDN service unsubscription message is used for mark and quits the subscription of CDN business; And from user's Subscription List, delete the corresponding relation list item of described Three S's erviceUserID.
Based in another embodiment of said system embodiment, described CDN adapter, also for after sending user permission request message to CDN controller, in Message Record list, store the record list item comprising the 2nd ServiceUserID in described user's permission request message, described IP address and described port numbers.
Based in another embodiment of said system embodiment, described CDN adapter, also for after the corresponding relation list item deleting described Three S's erviceUserID from user's Subscription List, record list item corresponding to described Three S's erviceUserID is inquired about from Message Record list, and send to CDN controller and cancel permission request message, the Three S's erviceUserID that this cancellation permission request message comprises permission parameter value, record list item that described Three S's erviceUserID is corresponding comprises, IP address and port numbers; Permission parameter value in described cancellation permission request message to cancel in described cancellation permission request message IP address to the access rights of CDN business for identifying;
Described CDN controller, also for deleting the IP address in described cancellation permission request message from licence list.
Based in another embodiment of said system embodiment, described CDN adapter and described service server are respectively arranged with and order S interface unit, between described CDN adapter and described service server, carry out interacting message by S interface unit;
Described CDN adapter and described CDN controller are respectively arranged with access control A interface unit, between described CDN adapter and described CDN controller, carry out interacting message by A interface unit.
A kind of content distribution network system that the embodiment of the present invention provides, comprises service server SP and CDN, and described CDN comprises more than one PoP node; Also comprise the access control system of the CDN of the above embodiment of the present invention.
The content distribution network system provided based on the above embodiment of the present invention and connection control method thereof and system, the access achieving the access of CDN system of users controls.Based on the access controlling mechanism of CDN system of users access, CDN operator can according to the charging of flow mode, also can launch the cooperation of user level with CDN client, carry out charging according to other charging way.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
What form a part for specification drawings describes embodiments of the invention, and is used from explanation principle of the present invention together with description one.
With reference to accompanying drawing, according to detailed description below, clearly the present invention can be understood, wherein:
Fig. 1 is the flow chart of a connection control method embodiment of CDN of the present invention.
Fig. 2 is the flow chart of another embodiment of connection control method of CDN of the present invention.
Fig. 3 is the structural representation of an access control system embodiment of CDN of the present invention.
Fig. 4 is the structural representation of a CDN system of the present invention embodiment.
Embodiment
Various exemplary embodiment of the present invention is described in detail now with reference to accompanying drawing.It should be noted that: unless specifically stated otherwise, otherwise positioned opposite, the numerical expression of the parts of setting forth in these embodiments and step and numerical value do not limit the scope of the invention.
Meanwhile, it should be understood that for convenience of description, the size of the various piece shown in accompanying drawing is not draw according to the proportionate relationship of reality.
Illustrative to the description only actually of at least one exemplary embodiment below, never as any restriction to the present invention and application or use.
May not discuss in detail for the known technology of person of ordinary skill in the relevant, method and apparatus, but in the appropriate case, described technology, method and apparatus should be regarded as a part for specification.
In all examples with discussing shown here, any occurrence should be construed as merely exemplary, instead of as restriction.Therefore, other example of exemplary embodiment can have different values.
It should be noted that: represent similar terms in similar label and letter accompanying drawing below, therefore, once be defined in an a certain Xiang Yi accompanying drawing, then do not need to be further discussed it in accompanying drawing subsequently.
Fig. 1 is the flow chart of a connection control method embodiment of CDN of the present invention.As shown in Figure 1, the connection control method of this Embodiment C DN comprises:
101, CDN service order (CDNServiceSub) message that the service server that CDN adapter (CDNadaptor) receives CDN client (that is: SP) sends, this CDN service order message comprises request and orders the first user service identification (ServiceUserID) of CDN business and the Customer ID of this CDN client.
ServiceUserID is wherein unique identification user in a SP; Customer ID unique identification SP.
102, CDN adapter stores the corresponding relation list item of Customer ID in CDN service order message and a ServiceUserID in user's Subscription List.
103, service server receives CDN service request (CDNServiceRequest) message that user asks to send when using CDN business, and being transmitted to CDN adapter, this CDN business request information comprises the 2nd ServiceUserID, IP address and the port numbers that request uses the user of CDN business.
IP address wherein and port numbers are source IP address and the source port number that request uses user's use of CDN business.
The 2nd ServiceUserID whether is there is in 104, CDN adapter inquiring user Subscription List.
If there is the 2nd ServiceUserID in user's Subscription List, perform the operation of 105.Otherwise, do not perform the subsequent operation of the present embodiment, or error response message can be returned to service server.
105, CDN adapter sends user's license request (UserPermitRequest) message to CDN controller (CDNController), and this user's permission request message comprises the 2nd ServiceUserID, IP address and port numbers.
The CDN resource (that is: the content resource in CDN on point-to-point (PoP) node) that in 106, CDN controller permission to use user permission request message, the user terminal access CDN controller of IP address controls.
The key of user access control is with different mark identification users' in CDN client (SP) side and CDN side, in CDN client (SP) side, user is user account mark (i.e. ServiceUserID) by application, and is by the mode identification of IP address+port numbers in CDNPoP node side.In the connection control method of the CDN system that the above embodiment of the present invention provides, the conversion of user account number mark to CDN side mark of application has been assisted by CDN adapter, thus realize user ID associating in SP side and CDN side, the access achieving the access of CDN system of users on this basis controls, and makes CDN can carry out user access control with SP cooperation.Based on the access controlling mechanism of CDN system of users access, CDN operator can according to the charging of flow mode, also can launch the cooperation of user level with CDN client, carry out charging according to other charging way.
Fig. 2 is the flow chart of another embodiment of connection control method of CDN of the present invention.As shown in Figure 2, the connection control method of this Embodiment C DN comprises:
201, when user asks order CDN business to become the paying member of CDN client (SP), by the service server transmission registration request of user terminal to SP, this registration request comprises following parameter: ask a ServiceUserID of order CDN business, order IP address (SubIP) and order time (SubTime).
Wherein, SubIP is the IP address that this user asks to use when ordering CDN business, and SubTime is the time that this user asks when ordering CDN business.
202, service server sends CDN service order message, comprising Customer ID, ServiceUserID, CDN subscription status (CDNsubscription) parameter value, SubIP and SubTime of following parameter: SP to CDN adapter.
Wherein, CDNsubscription parameter is for representing order or order cancellation CDN business, and the CDNsubscription parameter value value in CDN service order message is preset value, such as CDNsubscription=1, orders CDN business for identifying.
203, CDN adapter stores the corresponding relation list item (Customer ID of Customer ID in CDN service order message, ServiceUserID, SubIP and a SubTime in user's Subscription List, one ServiceUserID, SubIP, SubTime), information in user's Subscription List using the voucher to access authentication of user when using CDN business as subsequent user request, and returns a CDN service order acknowledge message to service server.
ServiceUserID is wherein unique identification user in a SP; Customer ID unique identification SP.
204, when user asks to use CDN business, such as, user is by one section of video clicking the URL link of SP and start to watch on the service server of this SP or start to download a file, send CDN business request information by user terminal to service server, this CDN business request information comprises the IP address (IPAddress) and port numbers (ports) that request uses the 2nd ServiceUserID of the user of CDN business, this user uses.
IP address wherein and port numbers are also referred to as source IP address and source port number.
205, the CDN business request information received is transmitted to CDN adapter by service server, and the CDN service of CDN adapter is brought into use in application.
The 2nd ServiceUserID in CDN business request information whether is there is in 206, CDN adapter inquiring user Subscription List.
If there is the 2nd ServiceUserID in user's Subscription List, perform the operation of 207.Otherwise, do not perform the subsequent operation of the present embodiment, or error response message can be returned to service server.
207, CDN adapter sends user's permission request message to CDN controller, and to apply for the CDN business rights of using of this user, this user's permission request message comprises permission parameter value, the 2nd ServiceUserID, IP address and port numbers.
Permission parameter is wherein for representing that in increase or cancellation user permission request message, IP address is to the access rights of CDN business.Permission parameter value in user's permission request message is preset value, such as permission=1, for identifying in adding users permission request message IP address to the access rights of CDN business.
After 208, CDN controller receives user's permission request message, the Access Control List (ACL) of amendment CDNPoP node, adds the IP address in user's permission request message in licence list wherein, and returns user right to CDN adapter and open response message.
209, CDN adapter sends CDN service response message to service server.
210, service server sends redirect message to using the user terminal of above-mentioned IP address, the CDN business request information that will the user terminal of this IP address be used to send is redirected in the URL(uniform resource locator) (URL) at CDN controller place, and user starts to access by this URL the CDN resource that CDN controller controls.
The URL preset configuration of CDN controller is on service server.
The IP address in CDN business request information whether is recorded in 211, CDN controller inquiry licence list.
If record the IP address in CDN business request information in licence list, perform the operation of 212.Otherwise, do not perform the subsequent operation of the present embodiment, or error response message can be returned to service server.
The CDN resource (that is: the content resource in CDN on PoP node) that 212, CDN controller allows this CDN of user terminal access using above-mentioned IP address to control, thus provide CDN business by CDN for using the user of IP address.
The connection control method of the CDN of the embodiment of the present invention can regard CDN service order flow process and access control flow process two parts as.Wherein, operation 101 ~ 102 or 201 ~ 203 belongs to CDN service order flow elements, and operation 103 ~ 106 or 204 ~ 212 belongs to access control flow elements.
In another embodiment of connection control method of CDN of the present invention, the Access Control List (ACL) of the CDNPoP node controlled for CDN controller can also be set in several ways, thus the object realized user access control, exemplarily can comprise (IP address, whether permission access, permits access time period) such tlv triple.This Access Control List (ACL) comprises licence list, this licence list allows the IP address of this CDN controller control of access CDN resource for recording, licence list is equivalent to (the IP address of Access Control List (ACL), allow access) or (IP address, allow access, the permits access time period) part list.The permits access time period wherein can be set to Preset Time by CDN controller, when access authentication being carried out to user in operation 211, time at that time can also be inquired about whether within the time period of permits access time period record, time in the time period of only recording in the permits access time period in time at that time, the CDN resource just allowing this user to access this CDN to control.
Such as, Access Control List (ACL) can be set by showing (IPtable) mode by IP on CDNPoP node, or, also can by arranging Access Control List (ACL) for the mode of the special fire compartment wall of CDNPoP Node configuration.CDNPoP node be wherein one group in order to provide the fringe node of CDN distribution services, these CDNPoP nodes externally provide CDN distribution services by some load-balancing techniques, in the external world just as a single server.
IPtable is a kind of important access control mechanisms in current linux and windows system, and its configuration deployment is in the file of similar etc/sysconfig/iptables, and list item example is in this document as follows:
ACCEPTall--133.2.1.3/00.0.0.0/0
ACCEPTall--133.3.1.3/00.0.0.0/0
Above-mentioned list item represents the IP bag whether this node can accept one group of particular source IP and object IP, only has the IP address defined in this document, and is identified as accept, just can be accepted by this node, otherwise just directly abandon.The flow process of configuration of IP table is exactly the flow process increasing these list items.
Fire compartment wall can think the enhanced edition of the IPtable that third party provides, performance and configuration flexibility are strengthened, but configured in one piece process, principle and IPtable are basically identical, those skilled in the art can understand based on the record of the embodiment of the present invention, repeat no more in the embodiment of the present invention.
In addition, in another embodiment of connection control method of CDN of the present invention, user can the business of order cancellation CDN client, specifically can realize in the following way:
User sends cancellation request by user terminal to service server, this cancellation request comprise request quit the subscription of CDN business Three S's erviceUserID, quit the subscription of IP address and quit the subscription of the time, quit the subscription of the IP address used when IP address is this user terminal transmission cancellation request, the time when time of quitting the subscription of is this user terminal transmission cancellation request;
Service server sends CDN service unsubscription message to CDN adapter, this CDN service unsubscription message comprises CDNsubscription parameter value, Three S's erviceUserID, quits the subscription of IP address and quit the subscription of the time, CDNsubscription parameter value in CDN service unsubscription message can value be another preset value, such as CDNsubscription=0, quits the subscription of CDN business for mark;
The corresponding relation list item of Three S's erviceUserID deleted by CDN adapter from user's Subscription List.
Further, in another embodiment of connection control method of CDN of the present invention, after CDN adapter sends user's permission request message to CDN controller, record list item (the 2nd ServiceUserID comprising the 2nd ServiceUserID, IP address in user's permission request message and port numbers can be stored in Message Record list, IP address, port numbers).
In the further embodiment of above-mentioned connection control method, after the corresponding relation list item of Three S's erviceUserID deleted by CDN adapter from user's Subscription List, in order to simplify licence list, avoid other user's not registered quit the subscription of beyond the user of CDN business just to use CDN business based on the IP address in licence list, the permits access to IP address in the corresponding relation list item deleted can be cancelled in the following way:
CDN adapter can inquire about record list item corresponding to Three S's erviceUserID from Message Record list, and send to CDN controller and cancel permission request message, the Three S's erviceUserID that this cancellation permission request message comprises permission parameter value, record list item that Three S's erviceUserID is corresponding comprises, IP address and port numbers.Wherein, the permission parameter value value cancelled in permission request message be another preset value, and such as, permission=0, for identifying in this cancellation permission request message of cancellation IP address to the access rights of CDN business;
The IP address of cancelling in permission request message deleted by CDN controller from licence list.
Fig. 3 is the structural representation of an access control system embodiment of CDN of the present invention.The access control system of this embodiment can be used in the present invention the connection control method flow process of the various embodiments described above.As shown in Figure 3, the access control system of this embodiment comprises CDN adapter and CDN controller.Wherein:
CDN adapter, the CDN service order message that the service server for receiving CDN client sends, this CDN service order message comprises the ServiceUserID that CDN business is ordered in request; The corresponding relation list item of a ServiceUserID in the Customer ID of CDN client and CDN service order message is stored in user's Subscription List; And receiving the CDN business request information of service server forwarding, this CDN business request information comprises the 2nd ServiceUserID, IP address and the port numbers that request uses CDN business; The 2nd ServiceUserID whether is there is in inquiring user Subscription List; If there is the 2nd ServiceUserID in user's Subscription List, send user's permission request message to CDN controller, this user's permission request message comprises the 2nd ServiceUserID, IP address and port numbers.
CDN controller, for control CDN resource, the CDN content resource namely in CDN on PoP node; And according to the CDN resource that the user terminal access CDN controller of user's permission request message permission to use IP address controls.
The content distribution network system provided based on the above embodiment of the present invention and access control system thereof, the access achieving the access of CDN system of users controls, and makes CDN can carry out user access control with CDN client (SP) cooperation.Based on the access controlling mechanism of CDN system of users access, CDN operator can according to the charging of flow mode, also can launch the cooperation of user level with CDN client, carry out charging according to other charging way.
In a concrete example of the access control system embodiment of CDN of the present invention, CDN service order message is initiated after receiving by service server the registration request that user sent by user terminal, order CDN business for asking, this registration request comprises ServiceUserID, SubIP and a SubTime.SubIP is wherein the IP address that user asks to use when ordering CDN business, and SubTime is the time that user asks when ordering CDN business.Correspondingly, the CDN service order message that CDN adapter sends also comprises CDNsubscription parameter value, SubIP and SubTime, wherein, CDNsubscription parameter is for representing order or order cancellation CDN business, and the CDNsubscription parameter value in CDN service order message orders CDN business for identifying.CDN adapter specifically for storing the corresponding relation list item (Customer ID, a ServiceUserID, SubIP, SubTime) of Customer ID, ServiceUserID, SubIP and a SubTime in user's Subscription List.
In a concrete example of the access control system embodiment of CDN of the present invention, permission parameter value is also comprised in user's permission request message that CDN adapter sends, this permission parameter to increase or cancels in user permission request message IP address to the access rights of CDN business for representing, the permission parameter value in user's permission request message is for identifying in adding users permission request message IP address to the access rights of CDN business.
In another embodiment of the access control system of CDN of the present invention, CDN controller specifically for adding the IP address in user's permission request message in licence list, and returns user right to CDN adapter and opens response message; And when receiving CDN business request information, whether recording the IP address in CDN business request information in inquiry licence list, determining whether as using the user of this IP address to provide CDN business.Correspondingly, CDN adapter is also for sending CDN service response message to service server, so that service server sends redirect message to using the user terminal of IP address, the CDN business request information using the user terminal of IP address to send is redirected on the URL at CDN controller place.
In another embodiment of the access control system of CDN of the present invention, CDN adapter is also for receiving the CDN service unsubscription message that service server sends based on the cancellation request that user terminal sends, this cancellation request comprise request quit the subscription of CDN business Three S's erviceUserID, quit the subscription of IP address and quit the subscription of the time, IP address of quitting the subscription of wherein is user terminal IP address of using when sending cancellation request, and the time of quitting the subscription of is the time of user terminal when sending cancellation request; CDN service unsubscription message comprises CDNsubscription parameter value, Three S's erviceUserID, quits the subscription of IP address and quit the subscription of the time, and the CDNsubscription parameter value in this CDN service unsubscription message is used for mark and quits the subscription of CDN business; And from user's Subscription List, delete the corresponding relation list item of Three S's erviceUserID.
In another embodiment of the access control system of CDN of the present invention, CDN adapter, also for after sending user's permission request message to CDN controller, stores the record list item of the 2nd ServiceUserID, IP address and the port numbers comprised in user's permission request message in Message Record list.
Further, after CDN adapter is also used in the corresponding relation list item deleting Three S's erviceUserID from user's Subscription List, the record list item that Three S's erviceUserID is corresponding is inquired about from Message Record list, and send cancellation permission request message to CDN controller, this cancellation permission request message comprises permission parameter value, the Three S's erviceUserID that the record list item that Three S's erviceUserID is corresponding comprises, IP address and port numbers, cancel permission parameter value in permission request message and to cancel in this cancellation permission request message IP address to the access rights of CDN business for identifying.Correspondingly, CDN controller also can be used for from licence list, delete the IP address of cancelling in permission request message.
Exemplarily, state in the access control system of each embodiment on the invention, CDN adapter and service server are respectively arranged with and order (S) interface unit, between CDN adapter and service server, carry out interacting message especially by this S interface unit; CDN adapter and CDN controller are respectively arranged with access control (A) interface unit, between CDN adapter and CDN controller, carry out interacting message especially by this A interface unit.
The access control system of the CDN system that this embodiment provides, add A interface and S interface relative to original CDN system and process flow process when needing user access control, when not using for user access control, do not change the flow process that current CDN client (SP) uses CDN business.
Fig. 4 is the structural representation of a CDN system of the present invention embodiment.As shown in Figure 4, the CDN access control system of service server SP, CDN of this CDN system SP and the above-mentioned any embodiment of the present invention, CDN wherein comprises more than one PoP node, and the CDN controller in the access control system of CDN carries out control and management to the content resource on PoP node each in CDN.
One of ordinary skill in the art will appreciate that: all or part of step realizing said method embodiment can have been come by the hardware that program command is relevant, aforesaid program can be stored in a computer read/write memory medium, this program, when performing, performs the step comprising said method embodiment; And aforesaid storage medium comprises: ROM, RAM, magnetic disc or CD etc. various can be program code stored medium.
In this specification, each embodiment all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiment, same or analogous part cross-reference between each embodiment.For system embodiment, because itself and embodiment of the method are substantially corresponding, so description is fairly simple, relevant part illustrates see the part of embodiment of the method.
Method of the present invention, system may be realized in many ways.Such as, any combination by software, hardware, firmware or software, hardware, firmware realizes method and system of the present invention.Said sequence for the step of described method is only to be described, and the step of method of the present invention is not limited to above specifically described order, unless specifically stated otherwise.In addition, in certain embodiments, can be also record program in the recording medium by the invention process, these programs comprise the machine readable instructions for realizing according to method of the present invention.Thus, the present invention also covers the recording medium stored for performing the program according to method of the present invention.
Embodiments provide the access control program of CDN system of users access, based on this, CDN product can be sold according to flow mode by CDN operator, also the cooperation of user level can be launched with CDN client, for the specific charge member user of CDN client provides CDN service, being participated in being divided into of charge member by the controlled CDN service for specific user, business model can being selected be divided into according to carrying out monthly payment according to user;
In addition, the embodiment of the present invention does not change the handling process of original CDN, and CDN itself does not need too large transformation, only need to increase CDNadaptor in original CDN system, and to PoP node adding users access control function, transformation cost is little, is applicable to various dissimilar CDN.The user access control function that PoP node provides can be arranged and also can be arranged by the couple in router of PoP node on CDN controller, and deployment way is very flexible.
As an embody rule of the embodiment of the present invention, when Virtual network operator and certain video operator launch HD video member combine operation time, this video operator do not think when the scale of operation initial stage this business unpredictable because the deployment of its normal CDN of this service impact and business, tend to the CDN platform using Virtual network operator to provide, if but directly use original CDN system, Virtual network operator cannot know whether this video operator only uses this CDN resource to cooperative business, the technical scheme that Virtual network operator is recorded based on the above embodiment of the present invention, video operator can be prevented the abuse of CDN resource.
Description of the invention provides in order to example with for the purpose of describing, and is not exhaustively or limit the invention to disclosed form.Many modifications and variations are obvious for the ordinary skill in the art.Selecting and describing embodiment is in order to principle of the present invention and practical application are better described, and enables those of ordinary skill in the art understand the present invention thus design the various embodiments with various amendment being suitable for special-purpose.
Claims (18)
1. a connection control method for content distributing network (CDN), is characterized in that, comprising:
The CDN service order message that the service server that CDN adapter receives CDN client sends, this CDN service order message comprises the first user service identification ServiceUserID that CDN business is ordered in request;
CDN adapter stores the corresponding relation list item of a ServiceUserID in the Customer ID of described CDN client and described CDN service order message in user's Subscription List;
Described service server receives the CDN business request information that user asks to send when using CDN business, and is transmitted to CDN adapter, and this CDN business request information comprises the 2nd ServiceUserID, IP address and the port numbers that request uses CDN business;
Described 2nd ServiceUserID whether is there is in CDN adapter inquiring user Subscription List;
If there is described 2nd ServiceUserID, CDN adapter in user's Subscription List to send user's permission request message to CDN controller, this user's permission request message comprises described 2nd ServiceUserID, described IP address and described port numbers;
The CDN resource that CDN controller described in the user terminal access of IP address described in the permission to use of CDN controller controls.
2. method according to claim 1, it is characterized in that, described CDN service order message is initiated after receiving by service server the registration request that user sent by user terminal, described registration request orders CDN business for asking, and described registration request comprises a described ServiceUserID, orders IP address SubIP and order time SubTime; Described SubIP is the IP address that described user asks to use when ordering CDN business, and described SubTime is the time that described user asks when ordering CDN business;
Described CDN service order message also comprises CDN subscription status CDNsubscription parameter value, SubIP and SubTime;
Wherein, CDNsubscription parameter is for representing order or order cancellation CDN business, and the CDNsubscription parameter value in described CDN service order message orders CDN business for identifying;
The corresponding relation list item that described CDN adapter stores a ServiceUserID in the Customer ID of described CDN client and described CDN service order message in user's Subscription List comprises: described CDN adapter stores the corresponding relation list item of described Customer ID, a described ServiceUserID, described SubIP and described SubTime in user's Subscription List.
3. method according to claim 2, it is characterized in that, also comprise license permission parameter value in described user's permission request message, described permission parameter to increase or cancels in described user's permission request message IP address to the access rights of CDN business for representing; Permission parameter value in described user's permission request message to increase in described user's permission request message IP address to the access rights of CDN business for identifying.
4. method according to claim 3, is characterized in that, the CDN resource that described in the user terminal access of IP address described in the permission to use of CDN controller, CDN controller controls comprises:
CDN controller adds described IP address in licence list, and returns user right to described CDN adapter and open response message;
CDN adapter sends CDN service response message to described service server;
Service server sends redirect message to using the user terminal of described IP address, is sent in the uniform resource position mark URL at CDN controller place by the CDN business request information that the user terminal of described for described use IP address sends;
Whether recording the IP address in described CDN business request information in CDN controller inquiry licence list, determining whether as using the user of described IP address to provide CDN business.
5. method according to claim 4, is characterized in that, also comprises:
Arrange the Access Control List (ACL) of the CDN point-to-point PoP node controlled for described CDN controller, this Access Control List (ACL) comprises described licence list, and described licence list allows the IP address of control CDN resource described in the described CDN controller of access for recording.
6. method according to claim 5, is characterized in that, described setting comprises for the Access Control List (ACL) of the CDNPoP node that described CDN controller controls:
CDNPoP node arranges Access Control List (ACL) by IP Table I Ptable mode; Or
For the special fire compartment wall of described CDNPoP Node configuration.
7. the method according to claim 2 to 6 any one, is characterized in that, also comprises:
After service server receives the cancellation request that user sent by user terminal, CDN service unsubscription message is sent to CDN adapter, described cancellation request comprise request quit the subscription of CDN business Three S's erviceUserID, quit the subscription of IP address and quit the subscription of the time, the IP address that the described IP of quitting the subscription of address uses when being user terminal transmission cancellation request, the time when time of quitting the subscription of is user terminal transmission cancellation request; Described CDN service unsubscription message comprises CDNsubscription parameter value, Three S's erviceUserID, quits the subscription of IP address and quit the subscription of the time, and the CDNsubscription parameter value in described CDN service unsubscription message is used for mark and quits the subscription of CDN business;
The corresponding relation list item of described Three S's erviceUserID deleted by CDN adapter from user's Subscription List.
8. method according to claim 7, is characterized in that, also comprises:
After CDN adapter sends user permission request message to CDN controller, in Message Record list, store the record list item comprising the 2nd ServiceUserID in described user's permission request message, described IP address and described port numbers.
9. method according to claim 8, is characterized in that, CDN adapter also comprises delete the corresponding relation list item of described Three S's erviceUserID from user's Subscription List after:
Record list item corresponding to described Three S's erviceUserID inquired about by CDN adapter from Message Record list, and send to CDN controller and cancel permission request message, the Three S's erviceUserID that this cancellation permission request message comprises permission parameter value, record list item that described Three S's erviceUserID is corresponding comprises, IP address and port numbers; Permission parameter value in described cancellation permission request message to cancel in described cancellation permission request message IP address to the access rights of CDN business for identifying;
The IP address in described cancellation permission request message deleted by described CDN controller from licence list.
10. an access control system for content distributing network (CDN), is characterized in that, comprising:
CDN adapter, the CDN service order message that the service server for receiving CDN client sends, this CDN service order message comprises the ServiceUserID that CDN business is ordered in request; The corresponding relation list item of a ServiceUserID in the Customer ID of described CDN client and described CDN service order message is stored in user's Subscription List; And receiving the CDN business request information of described service server forwarding, this CDN business request information comprises the 2nd ServiceUserID, IP address and the port numbers that request uses CDN business; Described 2nd ServiceUserID whether is there is in inquiring user Subscription List; If there is described 2nd ServiceUserID in user's Subscription List, send user's permission request message to CDN controller, this user's permission request message comprises described 2nd ServiceUserID, described IP address and described port numbers;
Described CDN controller, for control CDN resource; And according to the permission to use of described user's permission request message IP address user terminal access described in CDN controller control CDN resource.
11. systems according to claim 10, it is characterized in that, described CDN service order message is initiated after receiving by service server the registration request that user sent by user terminal, described registration request orders CDN business for asking, and described registration request comprises described ServiceUserID, SubIP and SubTime; Described SubIP is the IP address that described user asks to use when ordering CDN business, and described SubTime is the time that described user asks when ordering CDN business;
Described CDN service order message also comprises CDNsubscription parameter value, SubIP and SubTime;
Wherein, CDNsubscription parameter is for representing order or order cancellation CDN business, and the CDNsubscription parameter value in described CDN service order message orders CDN business for identifying;
Described CDN adapter, specifically for storing the corresponding relation list item of described Customer ID, a described ServiceUserID, described SubIP and described SubTime in user's Subscription List.
12. systems according to claim 11, it is characterized in that, also comprise permission parameter value in described user's permission request message, described permission parameter increases or to cancel in described user's permission request message IP address to the access rights of CDN business for representing; Permission parameter value in described user's permission request message to increase in described user's permission request message IP address to the access rights of CDN business for identifying.
13. systems according to claim 12, is characterized in that, described CDN controller, specifically for adding described IP address in licence list, and return user right to described CDN adapter and open response message; And when receiving CDN business request information, whether recording the IP address in described CDN business request information in inquiry licence list, determining whether as using the user of described IP address to provide CDN business;
Described CDN adapter, also for sending CDN service response message to described service server, so that service server sends redirect message to using the user terminal of described IP address, the CDN business request information that the user terminal of described for described use IP address sends is sent on the URL at CDN controller place.
14. systems according to claim 13, it is characterized in that, described CDN adapter is also for receiving the CDN service unsubscription message that service server sends based on the cancellation request that user terminal sends, described cancellation request comprise request quit the subscription of CDN business Three S's erviceUserID, quit the subscription of IP address and quit the subscription of the time, the IP address that the described IP of quitting the subscription of address uses when being user terminal transmission cancellation request, the time when time of quitting the subscription of is user terminal transmission cancellation request; Described CDN service unsubscription message comprises CDNsubscription parameter value, Three S's erviceUserID, quits the subscription of IP address and quit the subscription of the time, and the CDNsubscription parameter value in described CDN service unsubscription message is used for mark and quits the subscription of CDN business; And from user's Subscription List, delete the corresponding relation list item of described Three S's erviceUserID.
15. systems according to claim 14, it is characterized in that, described CDN adapter, also for after sending user permission request message to CDN controller, in Message Record list, store the record list item comprising the 2nd ServiceUserID in described user's permission request message, described IP address and described port numbers.
16. systems according to claim 15, it is characterized in that, described CDN adapter, also for after the corresponding relation list item deleting described Three S's erviceUserID from user's Subscription List, record list item corresponding to described Three S's erviceUserID is inquired about from Message Record list, and send to CDN controller and cancel permission request message, the Three S's erviceUserID that this cancellation permission request message comprises permission parameter value, record list item that described Three S's erviceUserID is corresponding comprises, IP address and port numbers; Permission parameter value in described cancellation permission request message to cancel in described cancellation permission request message IP address to the access rights of CDN business for identifying;
Described CDN controller, also for deleting the IP address in described cancellation permission request message from licence list.
17. according to claim 11 to the system described in 16 any one, it is characterized in that, described CDN adapter and described service server are respectively arranged with and order S interface unit, between described CDN adapter and described service server, carry out interacting message by S interface unit;
Described CDN adapter and described CDN controller are respectively arranged with access control A interface unit, between described CDN adapter and described CDN controller, carry out interacting message by A interface unit.
18. 1 kinds of content distributing network (CDN) systems, comprise service server SP and CDN, described CDN comprises more than one PoP node; It is characterized in that, also comprise the access control system of the CDN described in claim 10 to 17 any one.
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