CN105933399A - Content distribution network implementation method and system based on SDN - Google Patents
Content distribution network implementation method and system based on SDN Download PDFInfo
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- CN105933399A CN105933399A CN201610239384.1A CN201610239384A CN105933399A CN 105933399 A CN105933399 A CN 105933399A CN 201610239384 A CN201610239384 A CN 201610239384A CN 105933399 A CN105933399 A CN 105933399A
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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
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1097—Protocols in which an application is distributed across nodes in the network for distributed storage of data in networks, e.g. transport arrangements for network file system [NFS], storage area networks [SAN] or network attached storage [NAS]
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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
- H04L67/01—Protocols
- H04L67/10—Protocols in which an application is distributed across nodes in the network
- H04L67/1001—Protocols in which an application is distributed across nodes in the network for accessing one among a plurality of replicated servers
- H04L67/1004—Server selection for load balancing
- H04L67/1014—Server selection for load balancing based on the content of a request
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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
- H04L67/50—Network services
- H04L67/56—Provisioning of proxy services
- H04L67/561—Adding application-functional data or data for application control, e.g. adding metadata
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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
- H04L67/50—Network services
- H04L67/60—Scheduling or organising the servicing of application requests, e.g. requests for application data transmissions using the analysis and optimisation of the required network resources
- H04L67/63—Routing a service request depending on the request content or context
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
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- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention provides a content distribution network implementation method based on an SDN, and the method comprises the steps: analyzing an access request received from a client, so as to determine the access information in the access request; generating a new access request according to the access information, wherein the new access request at least comprises access information and an access routing list; transmitting the new access request to the CDN node according to the routing list; judging whether the CDN node is a target CDN node or not according to the new access request: enabling the CDN node to respond to the new access request if the CDN node is the target CDN node, or else, transmitting the new access request to a next CDN node; and giving full consideration to the content of the access request of a user and an optimal path from the user to the nearest node which can provide the content of the access request after the access request from the client is received, thereby guaranteeing that the access request of the user can be met and the optimal path can be provided for the user, improving the quality of the services provided for the user, and guaranteeing the user experience.
Description
Technical field
It relates to Internet technical field, particularly to one based on SDN (software defined network
Software Defined Network, SDN) the method and system of content distributing network.
Background technology
CDN (Content Delivery Network, content distributing network) is a kind of by each at network
On existing Internet basic one layer of intelligent virtual network that node server is constituted is placed at place.
CDN can in real time according to network traffics and the connection of each node, load state and to user away from
From with integrated informations such as response times, the request of user is re-directed on the service node that user is nearest,
Its objective is to select the content needed for user sends user of the node from user's relative close, alleviate
The situation of network congestion, improves the response speed of website.
But, in prior art, directly it is cached with content needed for user for what user sought relative close
Node is not often best to the network quality of user, i.e. only considered and can be supplied to described in user
The node of content and do not account for user's optimal path to this node, provide the user from being unable to
Excellent service, affects Consumer's Experience.
Summary of the invention
The disclosure provides the method and system of a kind of content distributing network based on SDN, with at least
Solve one of the problems referred to above.
According to an aspect of this disclosure, it is provided that the realization side of a kind of content distributing network based on SDN
Method, including:
Resolve the access request from client received to determine visit entrained in described access request
Ask information；
Generating new access request according to described access information, described new access request is including at least described
Access information and access routing table；
Described new access request is sent to CDN node according to described access routing table；
Judge whether described CDN node is target CDN node according to described new access request, if so,
The most described CDN node responds described new access request；
If it is not, then described new access request is forwarded to next CDN node.
According to another aspect of the disclosure, it is provided that the realization system of a kind of content distributing network based on SDN
System, including:
Access information determination module, for resolving the access request from client received to determine
State access information entrained in access request；
New access request determines module, for generating new access request according to described access information, described
New access request is including at least described access information and accesses routing table；
Access request sending module, for sending described new access request extremely according to described access routing table
CDN node；
Destination node determines module, for whether judging described CDN node according to described new access request
For target CDN node；
Access request respond module, for when judging that described CDN node is target CDN node, ringing
Should described new access request；
Access request forwarding module, is used for when judging that described CDN node is not target CDN node,
Described new access request is forwarded to next CDN node.
The method and system of the content distributing network based on SDN of disclosure embodiment, is receiving
The content of the access request of user and user is considered to providing after the access request of client
The optimum path of the nearest node of described access request content, thus i.e. ensure that and disclosure satisfy that user
Access request provide again the access path of optimum to user, thus improve the service provided the user
Quality, it is ensured that Consumer's Experience.
Accompanying drawing explanation
In order to be illustrated more clearly that the technical scheme of disclosure embodiment, institute in embodiment being described below
The accompanying drawing used is needed to be briefly described, it should be apparent that, the accompanying drawing in describing below is the disclosure
Some embodiments, for those of ordinary skill in the art, in the premise not paying creative work
Under, it is also possible to other accompanying drawing is obtained according to these accompanying drawings.
Fig. 1 is the flow process of an embodiment of the implementation method of the content distributing network based on SDN of the disclosure
Figure；
Fig. 2 is the stream of another embodiment of the implementation method of the content distributing network based on SDN of the disclosure
Cheng Tu；
Fig. 3 is the stream of the another embodiment of the implementation method of the content distributing network based on SDN of the disclosure
Cheng Tu；
Fig. 4 is the signal of an embodiment of the system that realizes of the content distributing network based on SDN of the disclosure
Figure；
Fig. 5 is showing of another embodiment of the system that realizes of the content distributing network based on SDN of the disclosure
It is intended to；
Fig. 6 is showing of the another embodiment of the system that realizes of the content distributing network based on SDN of the disclosure
It is intended to.
Specific embodiment
For making the purpose of disclosure embodiment, technical scheme and advantage clearer, below in conjunction with these public affairs
Open the accompanying drawing in embodiment, the technical scheme in disclosure embodiment be clearly and completely described,
Obviously, described embodiment is a part of embodiment of the disclosure rather than whole embodiments.Based on
Embodiment in the disclosure, those of ordinary skill in the art are obtained under not making creative work premise
The every other embodiment obtained, broadly falls into the scope of disclosure protection.
It should be noted that in the case of not conflicting, the embodiment in the application and the spy in embodiment
Levy and can be mutually combined.
The disclosure can be used in numerous general or special purpose computing system environment or configuration.Such as: Ge Renji
Calculation machine, server computer, handheld device or portable set, laptop device, multicomputer system,
System based on microprocessor, set top box, programmable consumer-elcetronics devices, network PC, small-sized calculating
Machine, mainframe computer, the distributed computing environment including any of the above system or equipment etc..
The disclosure can described in the general context of computer executable instructions,
Such as program module.Usually, program module includes performing particular task or realizing specific abstract data class
The routine of type, program, object, assembly, data structure etc..Can also be in a distributed computing environment
Put into practice the disclosure, in these distributed computing environment, by by communication network connected remotely
Reason equipment performs task.In a distributed computing environment, program module may be located at and includes storage device
In interior local and remote computer-readable storage medium.
Finally, in addition it is also necessary to explanation, in this article, the relational terms of such as first and second or the like
It is used merely to separate an entity or operation with another entity or operating space, and not necessarily requires
Or imply relation or the order that there is any this reality between these entities or operation.And, art
Language " includes ", " comprising ", not only include those key elements, but also other including being not expressly set out wanted
Element, or also include the key element intrinsic for this process, method, article or equipment.Do not having
In the case of more restrictions, statement " including ... " key element limited, it is not excluded that including described wanting
Process, method, article or the equipment of element there is also other identical element.
As it is shown in figure 1, the implementation method of the content distributing network based on SDN of an embodiment of the disclosure,
Including:
The access request from client that S11, parsing receive is entrained to determine in described access request
Access information；
S12, generating new access request according to described access information, described new access request includes at least
Described access information and access routing table；
S13, according to described access routing table send described new access request to CDN node；
S14, judge according to described new access request whether described CDN node is target CDN node,
The most described CDN node responds described new access request；
S15 is if it is not, be then forwarded to next CDN node by described new access request.
In this enforcement, receiving the access request considering user after the access request of client
Content and user to the optimum path of the nearest node that can provide described access request content, from
And i.e. ensure that disclosure satisfy that the access request of user provide optimum access path to user, thus
Improve the quality of the service provided the user, it is ensured that Consumer's Experience.
As in figure 2 it is shown, the realization side of content distributing network based on SDN of the embodiment in the disclosure
In method, new access request is TCP access request, and described access information is used for judging that described CDN saves
Whether point stores the file corresponding to described access information, described access routing table be used for determining described under
One CDN node.
Wherein, generate new TCP access request according to access information to include:
S21, determine that storage has the CDN source node of file corresponding to the information of access according to access information；
S22, determine that client is to the shortest path of CDN source node；
S23, the IP address of all CDN node in shortest path is stored as routing table；
S24, generate new TCP access request according at least to accessing information and routing table.
In the present embodiment, directly determine user to CDN source node shortest path, and by this path
The IP address of all of CDN node is stored as routing table, finally generates according to the information of access and routing table
New TCP access request for user access storage have access content node (CDN node or
CDN source node)；The CDN node comprised on shortest path certainly exists and has been cached with user
The caching CDN node of required content, and user is shortest path to the path of CDN source node, then
It is also necessarily shortest path that user is cached with the path of the caching CDN node of required content to this, therefore,
And not necessarily this caching CDN node directly sends required content for user, it may be possible to by the shortest
CDN node on path provides the user service, because this is as the CDN joint of a server
Point transmits data for user must be provided the user clothes than the direct of distance by caching CDN node
The quality of business to be got well, thus reaches to promote the purpose of Consumer's Experience；Since additionally, there is caching CDN joint
Point, is still to the IP address of all nodes on the whole path of CDN source node to be stored as routing table
Reason be, it is contemplated that it is whole that caching CDN node may not have needed for total caching user
The situation of file, when this happens, still can be according to described routing table Hui Yuan, to obtain user
Required access content.
As it is shown on figure 3, the realization side of content distributing network based on SDN of the embodiment in the disclosure
In method, according to access routing table, described new access request is forwarded to next CDN node described and includes:
S31, from accessing routing table the IP address reading next CDN node；
S32, the IP address of next CDN node is deleted from accessing routing table；
S33, according to the IP address of next CDN node new access request is forwarded to next CDN joint
Point.
In the present embodiment, by reading the IP address of next CDN node that will be forwarded to, rear the most vertical
I.e. delete when the method for this IP address makes to forward each time new access request and can directly read route
First IP address in table, and need not carry out unnecessary calculating and compare (if repeating process
In, from start to finish routing table does not the most change, all must be by counting when reading next CDN node the most each time
Calculate the IP address reading next CDN node described from whole routing table, for example, it is desired to record is next
Read from the beginning of the n-th byte, so should count and calculate again, cause the waste of room and time),
And have only to from the gauge outfit of routing table suitable when turning to next CDN node by the process of the present embodiment
Sequence reads first IP address, not only saves time and space, it is thus also avoided that owing to calculating and meter
The mistake that number may bring, such as, jump directly to farther node or jump back to a node etc..
In the implementation method of the content distributing network based on SDN of an embodiment of the disclosure, will be the shortest
The IP address of all CDN node in path is stored as routing table and includes:
The IP of the CDN node in described shortest path it is successively read along client to CDN source node direction
Address is stored as queue, to determine described routing table.
In the present embodiment, by by all CDN node IP sequence of addresses in shortest path in queue,
Further simplify the operation forwarding new access request to read IP address each time, because the feature of queue is just
It is, can only write from one end of queue, read from the other end of queue and delete.
In certain embodiments, new access request is UDP access request, and described access routing table is at least
Including the IP address of target CDN node, it is used for judging whether described CDN node is target CDN joint
Point.
In this enforcement, receiving the UDP considering user after the UDP access request of client
The content of access request and user are to nearest node optimum that can provide described access request content
Path, thus i.e. ensure that and disclosure satisfy that the access request of user provides again the access path of optimum to using
Family, thus improve the quality of the service provided the user, it is ensured that Consumer's Experience.
In the implementation method of the content distributing network based on SDN of an embodiment of the disclosure, according to institute
State new access request and judge whether described CDN node is that target CDN node is:
Relatively the IP address of described CDN node and the IP address of described target CDN node are to judge institute
State whether CDN node is target CDN node；
Described new access request is forwarded to next CDN node is:
Described new access request is forwarded to nearest CDN node.
The IP address by relatively described CDN node in the present embodiment and described target CDN node
IP address is to judge that described CDN node, can be fast and accurately at the whole network whether as target CDN node
Determine the currently stored CDN node having requested file, accelerate the UDP access request for user
Response speed, improve Consumer's Experience.
Disclosure embodiment can be passed through hardware processor (hardware processor) realize being correlated with
Functional module.
It should be noted that for aforesaid each method embodiment, in order to be briefly described, therefore by its all table
Stating and merge for a series of action, but those skilled in the art should know, the disclosure is by being retouched
The restriction of the sequence of movement stated because according to the disclosure, some step can use other orders or with
Shi Jinhang.Secondly, those skilled in the art also should know, embodiment described in this description all belongs to
In preferred embodiment, necessary to involved action and the module not necessarily disclosure.
In the above-described embodiments, the description to each embodiment all emphasizes particularly on different fields, and does not has in certain embodiment
The part described in detail, may refer to the associated description of other embodiments.
As shown in Figure 4, in the realization system of content distributing network based on SDN of an embodiment of the disclosure
In system, including:
Access information determination module, for resolving the access request from client received to determine
State access information entrained in access request；
New access request determines module, for generating new access request according to described access information, described
New access request is including at least described access information and accesses routing table；
Access request sending module, for sending described new access request extremely according to described access routing table
CDN node；
Destination node determines module, for whether judging described CDN node according to described new access request
For target CDN node；
Access request respond module, for when judging that described CDN node is target CDN node, ringing
Should described new access request；
Access request forwarding module, is used for when judging that described CDN node is not target CDN node,
Described new access request is forwarded to next CDN node.
In this enforcement, receiving the access request considering user after the access request of client
Content and user to the optimum path of the nearest node that can provide described access request content, from
And i.e. ensure that disclosure satisfy that the access request of user provide optimum access path to user, thus
Improve the quality of the service provided the user, it is ensured that Consumer's Experience.
As it is shown in figure 5, the realization system of content distributing network based on SDN of the embodiment in the disclosure
In system, new access request is TCP access request, and described access information is used for judging that described CDN saves
Whether point stores the file corresponding to described access information, described access routing table be used for determining described under
One CDN node.
Wherein, new access request determines that module includes:
Source node determines unit, for determining that storage has corresponding to described access information according to access information
The CDN source node of file；
Shortest path determines unit, for determining that client is to the shortest path of CDN source node；
Routing table signal generating unit, for being stored as the IP address of all CDN node in shortest path
Routing table；
New access request signal generating unit, visits for generating new TCP according at least to the information of access and routing table
Ask request.
In the present embodiment, directly determine user to CDN source node shortest path, and by this path
The IP address of all of CDN node is stored as routing table, finally generates according to the information of access and routing table
New TCP access request for user access storage have access content node (CDN node or
CDN source node)；The CDN node comprised on shortest path certainly exists and has been cached with user
The caching CDN node of required content, and user is shortest path to the path of CDN source node, then
It is also necessarily shortest path that user is cached with the path of the caching CDN node of required content to this, therefore,
And not necessarily this caching CDN node directly sends required content for user, it may be possible to by the shortest
CDN node on path provides the user service, because this is as the CDN joint of a server
Point transmits data for user must be provided the user clothes than the direct of distance by caching CDN node
The quality of business to be got well, thus reaches to promote the purpose of Consumer's Experience；Since additionally, there is caching CDN joint
Point, is still to the IP address of all nodes on the whole path of CDN source node to be stored as routing table
Reason be, it is contemplated that it is whole that caching CDN node may not have needed for total caching user
The situation of file, when this happens, still can be according to described routing table Hui Yuan, to obtain user
Required access content.
As shown in Figure 6, in the realization system of content distributing network based on SDN of an embodiment of the disclosure
In system, access request forwarding module includes:
Address reading unit, for reading the IP of next CDN node described from described access routing table
Address；
Routing table update unit, for accessing route by the IP address of next CDN node described from described
Table is deleted；
Request retransmission unit, is used for the IP address according to next CDN node described by described new access
Request is forwarded to next CDN node described.
In the present embodiment, by reading the IP address of next CDN node that will be forwarded to, rear the most vertical
I.e. delete when the method for this IP address makes to forward each time new access request and can directly read route
First IP address in table, and need not carry out unnecessary calculating and compare (if repeating process
In, from start to finish routing table does not the most change, all must be by counting when reading next CDN node the most each time
Calculate the IP address reading next CDN node described from whole routing table, for example, it is desired to record is next
Read from the beginning of the n-th byte, so should count and calculate again, cause the waste of room and time),
And have only to from the gauge outfit of routing table suitable when turning to next CDN node by the process of the present embodiment
Sequence reads first IP address, not only saves time and space, it is thus also avoided that owing to calculating and meter
The mistake that number may bring, such as, jump directly to farther node or jump back to a node etc..
The disclosure an embodiment content distributing network based on SDN realize in system, by described
The IP address of all CDN node in shortest path is stored as routing table and includes:
IP address along the CDN node that client is successively read in shortest path to CDN source node direction
It is stored as queue, to determine described routing table.
In the present embodiment, by by all CDN node IP sequence of addresses in shortest path in queue,
Further simplify the operation forwarding new access request to read IP address each time, because the feature of queue is just
It is, can only write from one end of queue, read from the other end of queue and delete.
In certain embodiments, new access request is UDP access request, and described access routing table is at least
Including the IP address of target CDN node, it is used for judging whether described CDN node is target CDN joint
Point.
In certain embodiments, destination node determines the module IP address for relatively described CDN node
With the IP address of described target CDN node to judge that whether described CDN node is as target CDN node；
Described access request forwarding module is for when judging that described CDN node is not target CDN node
Time, described new access request is forwarded to nearest CDN node.
Embodiment of the method described above is only schematically, wherein said illustrates as separating component
Unit can be or may not be physically separate, the parts shown as unit can be or
Person may not be physical location, i.e. may be located at a place, or can also be distributed to multiple network
On unit.Some or all of module therein can be selected according to the actual needs to realize the present embodiment
The purpose of scheme.Those of ordinary skill in the art are not in the case of paying performing creative labour, the most permissible
Understand and implement.
By the description of above embodiment, those skilled in the art is it can be understood that arrive each enforcement
Example can add the mode of required general hardware platform by software and realize, naturally it is also possible to pass through hardware.
Based on such understanding, the part that prior art is contributed by technique scheme the most in other words can
Embodying with the form with software product, this computer software product can be stored in computer-readable and deposit
In storage media, such as ROM/RAM, magnetic disc, CD etc., including some instructions with so that a calculating
Machine equipment (can be personal computer, server, or the network equipment etc.) perform each embodiment or
The method described in some part of person's embodiment.
Those skilled in the art it should be appreciated that embodiment of the disclosure the method that can be provided as, system or
Computer program.Therefore, the disclosure can use complete hardware embodiment, complete software implementation,
Or combine the form of embodiment in terms of software and hardware.And, the disclosure can use one or more
The computer-usable storage medium wherein including computer usable program code (includes but not limited to disk
Memorizer and optical memory etc.) form of the upper computer program implemented.
The disclosure is with reference to method, equipment (system) and the computer program product according to disclosure embodiment
The flow chart of product and/or block diagram describe.It should be understood that can be by computer program instructions flowchart
And/or flow process in each flow process in block diagram and/or square frame and flow chart and/or block diagram and
/ or the combination of square frame.Can provide these computer program instructions to general purpose computer, special-purpose computer,
The processor of Embedded Processor or other programmable data processing device is to produce a machine so that logical
The instruction of the processor execution crossing computer or other programmable data processing device produces for realizing at stream
The function specified in one flow process of journey figure or multiple flow process and/or one square frame of block diagram or multiple square frame
Device.
These computer program instructions may be alternatively stored in and computer or the process of other programmable datas can be guided to set
In the standby computer-readable memory worked in a specific way so that be stored in this computer-readable memory
In instruction produce and include the manufacture of command device, this command device realize in one flow process of flow chart or
The function specified in multiple flow processs and/or one square frame of block diagram or multiple square frame.These computer programs
Instruction also can be loaded in computer or other programmable data processing device so that computer or other
On programmable device, execution sequence of operations step is to produce computer implemented process, thus at computer
Or the instruction performed on other programmable devices provides for realizing in one flow process of flow chart or multiple flow process
And/or the step of the function specified in one square frame of block diagram or multiple square frame.
Last it is noted that above example is only in order to illustrate the technical scheme of the disclosure, rather than to it
Limit；Although the disclosure being described in detail with reference to previous embodiment, the ordinary skill of this area
Personnel it is understood that the technical scheme described in foregoing embodiments still can be modified by it, or
Person carries out equivalent to wherein portion of techniques feature；And these amendments or replacement, do not make corresponding skill
The essence of art scheme departs from the spirit and scope of the disclosure each embodiment technical scheme.
Claims (10)
1. an implementation method for content distributing network based on SDN, including:
Resolve the access request from client received to determine visit entrained in described access request
Ask information；
Generating new access request according to described access information, described new access request is including at least described
Access information and access routing table；
Described new access request is sent to CDN node according to described access routing table；
Judge whether described CDN node is target CDN node according to described new access request, if so,
The most described CDN node responds described new access request；
If it is not, then described new access request is forwarded to next CDN node.
Method the most according to claim 1, wherein, described new access request is that TCP accesses
Request, described access information is used for judging whether described CDN node has stored corresponding to described access information
File, described access routing table is used for determining next CDN node described.
Method the most according to claim 2, wherein, described according to described access routing table by described
New access request is forwarded to next CDN node described and includes:
The IP address of next CDN node described is read from described access routing table；
The IP address of next CDN node described is deleted from described access routing table；
IP address according to next CDN node described described new access request is forwarded to described next
CDN node.
Method the most according to claim 1, wherein, described new access request is that UDP accesses
Request, described access routing table at least includes the IP address of target CDN node, is used for judging described CDN
Whether node is target CDN node.
Method the most according to claim 4, wherein, described according to described new access request judgement
Whether described CDN node is that target CDN node is:
Relatively the IP address of described CDN node and the IP address of described target CDN node are to judge institute
State whether CDN node is target CDN node；
Described described new access request is forwarded to next CDN node it is:
Described new access request is forwarded to nearest CDN node.
6. content distributing network based on SDN realize a system, including:
Access information determination module, for resolving the access request from client received to determine
State access information entrained in access request；
New access request determines module, for generating new access request according to described access information, described
New access request is including at least described access information and accesses routing table；
Access request sending module, for sending described new access request extremely according to described access routing table
CDN node；
Destination node determines module, for whether judging described CDN node according to described new access request
For target CDN node；
Access request respond module, for when judging that described CDN node is target CDN node, ringing
Should described new access request；
Access request forwarding module, is used for when judging that described CDN node is not target CDN node,
Described new access request is forwarded to next CDN node.
System the most according to claim 6, wherein, described new access request is that TCP accesses
Request, described access information is used for judging whether described CDN node has stored corresponding to described access information
File, described access routing table is used for determining next CDN node described.
System the most according to claim 7, wherein, described access request forwarding module includes:
Address reading unit, for reading the IP of next CDN node described from described access routing table
Address；
Routing table update unit, for accessing route by the IP address of next CDN node described from described
Table is deleted；
Request retransmission unit, is used for the IP address according to next CDN node described by described new access
Request is forwarded to next CDN node described.
System the most according to claim 6, wherein, described new access request is that UDP accesses
Request, described access routing table at least includes the IP address of target CDN node, is used for judging described CDN
Whether node is target CDN node.
System the most according to claim 9, wherein, described destination node determine module for than
The IP address of more described CDN node and the IP address of described target CDN node are to judge described CDN
Whether node is target CDN node；
Described access request forwarding module is for when judging that described CDN node is not target CDN node
Time, described new access request is forwarded to nearest CDN node.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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